Fixes the Markdown lint config and affected files (#676)

I also ran our documentation against a few other linters, to see what
they would find, and fixed accordingly.

.github/workflows/boards_build.yml

@@ -1,38 +0,0 @@
----
-name: Build supported boards
-on:
-  push:
-    paths:
-     - 'patches/tock/*'
-     - 'third_party/tock/**'
-  pull_request:
-    types: [opened, synchronize, reopened]
-
-jobs:
-  build_boards:
-    strategy:
-      matrix:
-        os: [ubuntu-latest, macos-10.15]
-    runs-on: ${{ matrix.os }}
-    steps:
-      - uses: actions/checkout@v2
-        with:
-          submodules: "true"
-      - name: Install Rust toolchain
-        run: rustup show
-      - uses: actions/setup-python@v1
-        with:
-          python-version: 3.7
-      - name: Install Python dependencies
-        run: python -m pip install --upgrade pip setuptools wheel
-      - name: Set up OpenSK
-        run: ./setup.sh
-
-      - name: Building board nrf52840dk_opensk
-        run: ./deploy.py --board=nrf52840dk_opensk --no-app --programmer=none
-      - name: Building board nrf52840_dongle_opensk
-        run: ./deploy.py --board=nrf52840_dongle_opensk --no-app --programmer=none
-      - name: Building board nrf52840_dongle_dfu
-        run: ./deploy.py --board=nrf52840_dongle_dfu --no-app --programmer=none
-      - name: Building board nrf52840_mdk_dfu
-        run: ./deploy.py --board=nrf52840_mdk_dfu --no-app --programmer=none

.github/workflows/cargo_audit.yml

@@ -8,16 +8,12 @@ jobs:
     runs-on: ubuntu-latest
     if: github.repository == 'google/OpenSK'
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
         with:
           submodules: "true"
-      - name: Install Rust toolchain
-        run: rustup show
-      - uses: actions/setup-python@v1
+      - uses: actions/setup-python@v5
         with:
-          python-version: 3.7
-      - name: Install Python dependencies
-        run: python -m pip install --upgrade pip setuptools wheel
+          python-version: "3.10"
       - name: Set up OpenSK
         run: ./setup.sh
       - uses: actions-rs/audit-check@v1

.github/workflows/cargo_bloat.yml

@@ -6,42 +6,35 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       # Setup
-      - uses: actions/setup-python@v1
+      - uses: actions/setup-python@v5
         with:
-          python-version: 3.7
-      - name: Install Python dependencies
-        run: python -m pip install --upgrade pip setuptools wheel
+          python-version: "3.10"
       - uses: actions-rs/cargo@v1
         with:
           command: install
           args: cargo-bloat
 
       # First run: PR
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
         with:
           submodules: true
-      - name: Install Rust toolchain
-        run: rustup show
       - name: Set up OpenSK
         run: ./setup.sh
       - name: Run bloat on the PR
-        run: RUSTFLAGS="-C link-arg=-icf=all -C force-frame-pointers=no" cargo bloat --release --target=thumbv7em-none-eabi --features=with_ctap1,vendor_hid --crates >> .github/workflows/bloat_output_new.txt
+        run: RUSTFLAGS="-C link-arg=-icf=all -C force-frame-pointers=no -C link-arg=-Tnrf52840_layout.ld" cargo bloat --release --target=thumbv7em-none-eabi --features=config_command,with_ctap1 --crates >> .github/workflows/bloat_output_new.txt
 
       # Second run: PR
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
         with:
           submodules: true
           ref: ${{ github.base_ref }}
           path: OpenSK_base
-      - name: Install old Rust toolchain
-        working-directory: ./OpenSK_base
-        run: rustup show
       - name: Set up OpenSK
         working-directory: ./OpenSK_base
         run: ./setup.sh
       - name: Run bloat on base
         working-directory: ./OpenSK_base
-        run: RUSTFLAGS="-C link-arg=-icf=all -C force-frame-pointers=no" cargo bloat --release --target=thumbv7em-none-eabi --features=with_ctap1,vendor_hid --crates >> "$GITHUB_WORKSPACE/.github/workflows/bloat_output_old.txt"
+        run: RUSTFLAGS="-C link-arg=-icf=all -C force-frame-pointers=no -C link-arg=-Tnrf52840_layout.ld" cargo bloat --release --target=thumbv7em-none-eabi --features=config_command,with_ctap1 --crates >> "$GITHUB_WORKSPACE/.github/workflows/bloat_output_old.txt"
 
       - name: Run output formatter to echo workflow command
         run: ./.github/workflows/bloat_formatter.sh bloat_output_new.txt bloat_output_old.txt bloat_comment.md

.github/workflows/cargo_check.yml

@@ -1,96 +0,0 @@
-name: Cargo check
-on:
-  push:
-    paths:
-      - 'examples/*.rs'
-      - 'libraries/**/*.rs'
-      - 'src/**/*.rs'
-      - 'patches/**'
-      - '**/Cargo.toml'
-      - '.cargo/config'
-      - '!third_party/**'
-  pull_request:
-    types: [opened, synchronize, reopened]
-
-jobs:
-  cargo_check:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-        with:
-          submodules: "true"
-      - name: Install Rust toolchain
-        run: rustup show
-      - uses: actions/setup-python@v1
-        with:
-          python-version: 3.7
-      - name: Install Python dependencies
-        run: python -m pip install --upgrade pip setuptools wheel
-      - name: Set up OpenSK
-        run: ./setup.sh
-
-      - name: Check OpenSK w/o features
-        uses: actions-rs/cargo@v1
-        with:
-          command: check
-          args: --target thumbv7em-none-eabi --release
-
-      - name: Check OpenSK with_ctap1
-        uses: actions-rs/cargo@v1
-        with:
-          command: check
-          args: --target thumbv7em-none-eabi --release --features with_ctap1
-
-      - name: Check OpenSK vendor_hid
-        uses: actions-rs/cargo@v1
-        with:
-          command: check
-          args: --target thumbv7em-none-eabi --release --features vendor_hid
-
-      - name: Check OpenSK ed25519
-        uses: actions-rs/cargo@v1
-        with:
-          command: check
-          args: --target thumbv7em-none-eabi --release --features ed25519
-
-      - name: Check OpenSK debug_ctap
-        uses: actions-rs/cargo@v1
-        with:
-          command: check
-          args: --target thumbv7em-none-eabi --release --features debug_ctap
-
-      - name: Check OpenSK panic_console
-        uses: actions-rs/cargo@v1
-        with:
-          command: check
-          args: --target thumbv7em-none-eabi --release --features panic_console
-
-      - name: Check OpenSK debug_allocations
-        uses: actions-rs/cargo@v1
-        with:
-          command: check
-          args: --target thumbv7em-none-eabi --release --features debug_allocations
-
-      - name: Check OpenSK verbose
-        uses: actions-rs/cargo@v1
-        with:
-          command: check
-          args: --target thumbv7em-none-eabi --release --features verbose
-
-      - name: Check OpenSK debug_ctap,with_ctap1
-        uses: actions-rs/cargo@v1
-        with:
-          command: check
-          args: --target thumbv7em-none-eabi --release --features debug_ctap,with_ctap1
-
-      - name: Check OpenSK debug_ctap,with_ctap1,vendor_hid,ed25519,panic_console,debug_allocations,verbose
-        uses: actions-rs/cargo@v1
-        with:
-          command: check
-          args: --target thumbv7em-none-eabi --release --features debug_ctap,with_ctap1,vendor_hid,ed25519,panic_console,debug_allocations,verbose
-
-      - name: Check examples
-        uses: actions-rs/cargo@v1
-        with:
-          command: check
-          args: --target thumbv7em-none-eabi --release --examples

.github/workflows/cargo_clippy.yml

@@ -1,34 +0,0 @@
----
-name: Cargo Clippy
-on:
-  push:
-  pull_request:
-    types: [opened, synchronize, reopened]
-
-jobs:
-  cargo_clippy:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-        with:
-          submodules: "true"
-      - name: Install Rust toolchain
-        run: rustup show
-      - uses: actions/setup-python@v1
-        with:
-          python-version: 3.7
-      - name: Install Python dependencies
-        run: python -m pip install --upgrade pip setuptools wheel
-      - name: Set up OpenSK
-        run: ./setup.sh
-
-      - uses: actions-rs/clippy-check@v1
-        with:
-          token: ${{ secrets.GITHUB_TOKEN }}
-          args: --all-targets --features std
-      - name: Deny Clippy warnings (std)
-        run: cargo clippy --all-targets --features std -- -A clippy::new_without_default -D warnings
-      - name: Deny Clippy warnings (all)
-        run: cargo clippy --all-targets --features std,with_ctap1,ed25519,vendor_hid -- -A clippy::new_without_default -D warnings
-      - name: Deny Clippy warnings (all, nfc)
-        run: cargo clippy --all-targets --features std,with_ctap1,with_nfc,ed25519,vendor_hid -- -A clippy::new_without_default -D warnings

.github/workflows/cargo_fmt.yml

@@ -1,79 +0,0 @@
-name: Cargo format
-on:
-  push:
-    paths:
-      - 'examples/*.rs'
-      - 'libraries/**/*.rs'
-      - 'src/**/*.rs'
-      - 'tools/**/*.rs'
-      - 'patches/**'
-      - '**/Cargo.toml'
-      - '.cargo/config'
-      - '!third_party/**'
-  pull_request:
-    types: [opened, synchronize, reopened]
-
-jobs:
-  cargo_format:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-        with:
-          submodules: "true"
-      - name: Install Rust toolchain
-        run: rustup show
-      - uses: actions/setup-python@v1
-        with:
-          python-version: 3.7
-      - name: Install Python dependencies
-        run: python -m pip install --upgrade pip setuptools wheel
-      - name: Set up OpenSK
-        run: ./setup.sh
-
-      - name: Cargo format src/
-        uses: actions-rs/cargo@v1
-        with:
-          command: fmt
-          args: --all -- --check
-
-      - name: Cargo format fuzz/
-        uses: actions-rs/cargo@v1
-        with:
-          command: fmt
-          args: --manifest-path fuzz/Cargo.toml --all -- --check
-
-      - name: Cargo format libraries/cbor
-        uses: actions-rs/cargo@v1
-        with:
-          command: fmt
-          args: --manifest-path libraries/cbor/Cargo.toml --all -- --check
-
-      - name: Cargo format libraries/cbor/fuzz
-        uses: actions-rs/cargo@v1
-        with:
-          command: fmt
-          args: --manifest-path libraries/cbor/fuzz/Cargo.toml --all -- --check
-
-      - name: Cargo format libraries/crypto
-        uses: actions-rs/cargo@v1
-        with:
-          command: fmt
-          args: --manifest-path libraries/crypto/Cargo.toml --all -- --check
-
-      - name: Cargo format libraries/persistent_store
-        uses: actions-rs/cargo@v1
-        with:
-          command: fmt
-          args: --manifest-path libraries/persistent_store/Cargo.toml --all -- --check
-
-      - name: Cargo format tools/heapviz
-        uses: actions-rs/cargo@v1
-        with:
-          command: fmt
-          args: --manifest-path tools/heapviz/Cargo.toml --all -- --check
-
-      - name: Cargo format bootloader
-        uses: actions-rs/cargo@v1
-        with:
-          command: fmt
-          args: --manifest-path bootloader/Cargo.toml --all -- --check

.github/workflows/cargo_fuzz.yml

@@ -1,32 +0,0 @@
----
-name: Cargo fuzz build
-on:
-  push:
-  pull_request:
-    types: [opened, synchronize, reopened]
-
-jobs:
-  build_fuzzing:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-        with:
-          submodules: "true"
-      - name: Install Rust toolchain
-        run: rustup show
-      - uses: actions/setup-python@v1
-        with:
-          python-version: 3.7
-      - name: Install Python dependencies
-        run: python -m pip install --upgrade pip setuptools wheel
-      - name: Set up OpenSK
-        run: ./setup.sh
-      - name: Set up fuzzing
-        run: ./fuzzing_setup.sh
-
-      - name: Cargo fuzz build
-        run: cargo fuzz build
-      - name: Cargo fuzz build (libraries/cbor)
-        run: cd libraries/cbor && cargo fuzz build && cd ../..
-      - name: Cargo fuzz build (libraries/persistent_store)
-        run: cd libraries/persistent_store && cargo fuzz build && cd ../..

.github/workflows/cbor_test.yml

@@ -1,37 +0,0 @@
----
-name: CBOR tests
-on:
-  push:
-    paths:
-      - 'libraries/cbor/**'
-  pull_request:
-    types: [opened, synchronize, reopened]
-
-jobs:
-  cbor_test:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-        with:
-          submodules: "true"
-      - name: Install Rust toolchain
-        run: rustup show
-      - uses: actions/setup-python@v1
-        with:
-          python-version: 3.7
-      - name: Install Python dependencies
-        run: python -m pip install --upgrade pip setuptools wheel
-      - name: Set up OpenSK
-        run: ./setup.sh
-
-      - name: Unit testing of CBOR library (release mode)
-        uses: actions-rs/cargo@v1
-        with:
-          command: test
-          args: --manifest-path libraries/cbor/Cargo.toml --release
-
-      - name: Unit testing of CBOR library (debug mode)
-        uses: actions-rs/cargo@v1
-        with:
-          command: test
-          args: --manifest-path libraries/cbor/Cargo.toml

.github/workflows/ci.yml

@@ -0,0 +1,31 @@
+name: Continuous Integration
+
+on:
+  push:
+    branches:
+      - develop
+  pull_request:
+    branches:
+      - develop
+  schedule:
+    - cron: 30 1 * * 2 # every Tuesday at 1:30 UTC
+
+concurrency:
+  group: ci-${{ github.ref }}
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+
+jobs:
+  runtests:
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest]
+    runs-on: ${{ matrix.os }}
+    permissions:
+      contents: read
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
+        with:
+          python-version: "3.10"
+      - run: ./setup.sh
+      - run: ./run_desktop_tests.sh

.github/workflows/cifuzz.yml

@@ -1,6 +1,6 @@
 name: CIFuzz
 on: 
-  pull_request:
+  push:
     branches:
       - develop
 jobs:
@@ -21,7 +21,7 @@ jobs:
         fuzz-seconds: 600
         dry-run: false
     - name: Upload Crash
-      uses: actions/upload-artifact@v1
+      uses: actions/upload-artifact@v4
       if: failure() && steps.build.outcome == 'success'
       with:
         name: artifacts

.github/workflows/coveralls.yml

@@ -3,7 +3,6 @@ name: OpenSK code coverage report
 on:
   push:
     paths:
-      - 'src/**/*.rs'
       - 'libraries/**/*.rs'
   pull_request:
     types: [opened, synchronize, reopened]
@@ -14,35 +13,35 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
         with:
           submodules: "true"
       - name: Install Rust toolchain
         run: rustup show
-      - uses: actions/setup-python@v1
+      - uses: actions/setup-python@v5
         with:
-          python-version: 3.7
-      - name: Install Python dependencies
-        run: python -m pip install --upgrade pip setuptools wheel
+          python-version: "3.10"
       - name: Set up OpenSK
         run: ./setup.sh
       - name: Install llvm tools
-        run: rustup component add llvm-tools-preview
+        run: rustup +nightly component add llvm-tools-preview
 
       - name: Install grcov
         run: if [[ ! -e ~/.cargo/bin/grcov ]]; then cargo +stable install grcov; fi
       - uses: actions-rs/cargo@v1
         with:
+          toolchain: nightly
           command: test
-          args: --features "with_ctap1,vendor_hid,ed25519,with_nfc,std" --no-fail-fast
+          args: --manifest-path libraries/opensk/Cargo.toml --features "std,with_ctap1,vendor_hid,ed25519" --no-fail-fast
         env:
-          RUSTFLAGS: "-Zinstrument-coverage"
+          RUSTFLAGS: "-Cinstrument-coverage"
           LLVM_PROFILE_FILE: "opensk-%p-%m.profraw"
       - name: Run grcov
-        run: grcov . --binary-path ./target/debug/ --source-dir . --output-type lcov --ignore-not-existing ---output-path ./lcov.info --ignore "/*" --ignore "examples/*" --ignore "third_party/*"
+        run: RUSTUP_TOOLCHAIN=nightly grcov . --binary-path ./libraries/opensk/target/debug/ --source-dir libraries/opensk/ --output-type lcov --ignore-not-existing --output-path ./lcov.info --ignore "/*" --ignore "examples/*" --ignore "third_party/*"
       - uses: coverallsapp/github-action@1.1.3
         name: upload report to coveralls
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}
           path-to-lcov: "./lcov.info"
+          base-path: "libraries/opensk"
 

.github/workflows/crypto_test.yml

@@ -1,41 +0,0 @@
----
-name: Crypto library tests
-on:
-  push:
-    paths:
-      - 'libraries/crypto/**'
-  pull_request:
-    types: [opened, synchronize, reopened]
-    paths:
-      - 'libraries/crypto/**'
-
-jobs:
-  crypto_test:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-        with:
-          submodules: "true"
-      - name: Install Rust toolchain
-        run: rustup show
-      - uses: actions/setup-python@v1
-        with:
-          python-version: 3.7
-      - name: Install Python dependencies
-        run: python -m pip install --upgrade pip setuptools wheel
-      - name: Set up OpenSK
-        run: ./setup.sh
-
-      - run: echo "RUSTFLAGS=-C target-feature=+aes" >> $GITHUB_ENV
-
-      - name: Unit testing of crypto library (release mode)
-        uses: actions-rs/cargo@v1
-        with:
-          command: test
-          args: --manifest-path libraries/crypto/Cargo.toml --release --features std
-
-      - name: Unit testing of crypto library (debug mode)
-        uses: actions-rs/cargo@v1
-        with:
-          command: test
-          args: --manifest-path libraries/crypto/Cargo.toml --features std

.github/workflows/heapviz_test.yml

@@ -1,34 +0,0 @@
----
-name: Heapviz tool tests
-on:
-  push:
-    paths:
-      - 'tools/heapviz/**'
-  pull_request:
-    types: [opened, synchronize, reopened]
-
-jobs:
-  heapviz_test:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-      - name: Install ncurses
-        run: sudo apt-get install libncurses-dev
-
-      - name: Check heapviz tool
-        uses: actions-rs/cargo@v1
-        with:
-          command: check
-          args: --manifest-path tools/heapviz/Cargo.toml
-
-      - name: Unit testing of heapviz tool (debug mode)
-        uses: actions-rs/cargo@v1
-        with:
-          command: test
-          args: --manifest-path tools/heapviz/Cargo.toml
-
-      - name: Unit testing of heapviz tool (release mode)
-        uses: actions-rs/cargo@v1
-        with:
-          command: test
-          args: --manifest-path tools/heapviz/Cargo.toml --release

.github/workflows/mdlint.yml

@@ -12,10 +12,10 @@ jobs:
   mdlint:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: markdownlint-cli
-        uses: nosborn/github-action-markdown-cli@v1.1.1
+        uses: nosborn/github-action-markdown-cli@v3
         with:
           files: '**/*.md'
-          ignore_files: "third_party/*"
-          config_file: ".markdownlint.json"
+          config_file: '.markdownlint.json'
+          ignore_files: 'third_party/*'

.github/workflows/opensk_build.yml

@@ -1,40 +0,0 @@
----
-name: OpenSK build
-on:
-  push:
-  pull_request:
-    types: [opened, synchronize, reopened]
-
-jobs:
-  build_ctap2:
-    strategy:
-      matrix:
-        os: [ubuntu-latest, macos-10.15]
-    runs-on: ${{ matrix.os }}
-    steps:
-      - uses: actions/checkout@v2
-        with:
-          submodules: "true"
-      - name: Install Rust toolchain
-        run: rustup show
-      - uses: actions/setup-python@v1
-        with:
-          python-version: 3.7
-      - name: Install Python dependencies
-        run: python -m pip install --upgrade pip setuptools wheel
-      - name: Set up OpenSK
-        run: ./setup.sh
-
-      - name: Building sha256sum tool
-        uses: actions-rs/cargo@v1
-        with:
-          command: build
-          args: --manifest-path third_party/tock/tools/sha256sum/Cargo.toml
-
-      - name: Building OpenSK
-        uses: actions-rs/cargo@v1
-        with:
-          command: build
-          args: --release --target=thumbv7em-none-eabi --features with_ctap1,vendor_hid
-      - name: Compute SHA-256 sum
-        run: ./third_party/tock/tools/sha256sum/target/debug/sha256sum target/thumbv7em-none-eabi/release/ctap2

.github/workflows/opensk_test.yml

@@ -1,52 +0,0 @@
----
-name: OpenSK tests
-on:
-  push:
-    paths:
-      - 'src/**/*.rs'
-  pull_request:
-    types: [opened, synchronize, reopened]
-
-jobs:
-  ctap2_test:
-    name: CTAP2 unit tests
-    runs-on: ubuntu-latest
-
-    steps:
-      - uses: actions/checkout@v2
-        with:
-          submodules: "true"
-      - name: Install Rust toolchain
-        run: rustup show
-      - uses: actions/setup-python@v1
-        with:
-          python-version: 3.7
-      - name: Install Python dependencies
-        run: python -m pip install --upgrade pip setuptools wheel
-      - name: Set up OpenSK
-        run: ./setup.sh
-
-      - name: Unit testing of CTAP2 (release mode)
-        uses: actions-rs/cargo@v1
-        with:
-          command: test
-          args: --release --features std
-
-      - name: Unit testing of CTAP2 (debug mode)
-        uses: actions-rs/cargo@v1
-        with:
-          command: test
-          args: --features std
-
-      - name: Unit testing of CTAP2 (release mode + CTAP1)
-        uses: actions-rs/cargo@v1
-        with:
-          command: test
-          args: --release --features std,with_ctap1
-
-      - name: Unit testing of CTAP2 (debug mode + CTAP1)
-        uses: actions-rs/cargo@v1
-        with:
-          command: test
-          args: --features std,with_ctap1
-

.github/workflows/persistent_store_test.yml

@@ -1,29 +0,0 @@
----
-name: Persistent store tests
-on:
-  push:
-    paths:
-      - 'libraries/peristent_store/**'
-  pull_request:
-    types: [opened, synchronize, reopened]
-
-jobs:
-  persistent_store_test:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-
-      - name: Install Rust toolchain
-        run: rustup show
-
-      - name: Unit testing of Persistent store library (release mode)
-        uses: actions-rs/cargo@v1
-        with:
-          command: test
-          args: --manifest-path libraries/persistent_store/Cargo.toml --release --features=std
-
-      - name: Unit testing of Persistent store library (debug mode)
-        uses: actions-rs/cargo@v1
-        with:
-          command: test
-          args: --manifest-path libraries/persistent_store/Cargo.toml --features=std

.github/workflows/python.yml

@@ -1,46 +0,0 @@
-name: pylint
-on:
-  push:
-    paths:
-      - '**/*.py'
-      - '.pylintrc'
-      - '!third_party/**'
-  pull_request:
-    types: [opened, synchronize, reopened]
-jobs:
-  pylint:
-    runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        python-version: [3.6, 3.7, 3.8, 3.9]
-    steps:
-      - uses: actions/checkout@v2
-      - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v1
-        with:
-          python-version: ${{ matrix.python-version }}
-      - name: Install dependencies
-        run: |
-          python -m pip install --upgrade pip setuptools wheel
-          pip install 'tockloader==1.5' pylint
-      - name: Register matcher
-        run: echo ::add-matcher::./.github/python_matcher.json
-      - name: Test code with pylint
-        run: ./tools/run_pylint.sh
-
-  yapf:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-      - name: Set up Python 3.7
-        uses: actions/setup-python@v1
-        with:
-          python-version: 3.7
-      - name: Install dependencies
-        run: |
-          python -m pip install --upgrade pip setuptools wheel
-          pip install 'yapf>=0.30.0' tockloader
-      - name: Test code formatting with yapf
-        run: |
-          echo ::add-matcher::./.github/python_matcher.json
-          yapf --style=yapf --recursive --exclude third_party --diff .

.github/workflows/reproducible.yml

@@ -9,20 +9,18 @@ jobs:
   check_hashes:
     strategy:
       matrix:
-        os: [ubuntu-latest, macos-10.15]
+        os: [ubuntu-latest, macos-latest]
       fail-fast: false
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
         with:
           submodules: "true"
       - name: Install Rust toolchain
         run: rustup show
-      - uses: actions/setup-python@v1
+      - uses: actions/setup-python@v5
         with:
-          python-version: 3.7
-      - name: Install Python dependencies
-        run: python -m pip install --upgrade pip setuptools wheel
+          python-version: "3.10"
       - name: Set up OpenSK
         run: ./setup.sh
 
@@ -32,7 +30,7 @@ jobs:
         run: ./maintainers/reproduce_hashes.sh
 
       - name: Upload reproduced binaries
-        uses: actions/upload-artifact@v1
+        uses: actions/upload-artifact@v4
         with:
           name: reproduced-${{ matrix.os }}
           path: reproducible/reproduced.tar

.github/workflows/rng256_test.yml

@@ -1,39 +0,0 @@
----
-name: RNG library tests
-on:
-  push:
-    paths:
-      - 'libraries/rng256/**'
-  pull_request:
-    types: [opened, synchronize, reopened]
-    paths:
-      - 'libraries/rng256/**'
-
-jobs:
-  rng256_test:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-        with:
-          submodules: "true"
-      - name: Install Rust toolchain
-        run: rustup show
-      - uses: actions/setup-python@v1
-        with:
-          python-version: 3.7
-      - name: Install Python dependencies
-        run: python -m pip install --upgrade pip setuptools wheel
-      - name: Set up OpenSK
-        run: ./setup.sh
-
-      - name: Unit testing of rng256library (release mode)
-        uses: actions-rs/cargo@v1
-        with:
-          command: test
-          args: --manifest-path libraries/rng256/Cargo.toml --release --features std
-
-      - name: Unit testing of rng256 library (debug mode)
-        uses: actions-rs/cargo@v1
-        with:
-          command: test
-          args: --manifest-path libraries/rng256/Cargo.toml --features std

.gitignore

@@ -1,7 +1,7 @@
-fuzz/artifacts
-fuzz/corpus
-fuzz/coverage
+libraries/**/Cargo.lock
 target/
+/build/
+/py_virtual_env/
 
 # Local installation of elf2tab.
 /elf2tab/

.markdownlint.json

@@ -1,35 +1,22 @@
 {
     "default": true,
-    "heading-style": {
+    "MD003": {
         "style": "atx"
     },
-    "no-trailing-spaces": {
+    "MD007": {
+        "indent": 4
+    },
+    "MD009": {
         "br_spaces": 0,
         "strict": true
     },
-    "ul-indent": {
-        "indent": 4
-    },
-    "line-length": {
+    "MD013": {
         "line_length": 80,
         "code_blocks": false
     },
-    "list-marker-space": {
-        "ol_single": 2,
-        "ol_multi": 2,
-        "ul_single": 3,
-        "ul_multi": 3
-    },
-    "no-inline-html": {
+    "MD033": {
         "allowed_elements": [
         "img"
 	]
-    },
-    "fenced-code-language": true,
-    "code-block-style": {
-        "style": "fenced"
-    },
-    "code-fence-style": {
-        "style": "backtick"
     }
 }

.pylintrc

@@ -437,6 +437,6 @@ valid-metaclass-classmethod-first-arg=mcs
 
 # Exceptions that will emit a warning when being caught. Defaults to
 # "Exception"
-overgeneral-exceptions=StandardError,
-                       Exception,
-                       BaseException
+overgeneral-exceptions=builtins.StandardError,
+                       builtins.Exception,
+                       builtins.BaseException

CITATION.cff

@@ -0,0 +1,27 @@
+cff-version: 1.2.0
+message: "If you use this software, please cite it as below."
+repository-code: "https://github.com/google/OpenSK"
+license: "Apache-2.0"
+preferred-citation:
+  type: article
+  authors:
+  - family-names: "Ghinea"
+    given-names: "Diana"
+  - family-names: "Kaczmarczyck"
+    given-names: "Fabian"
+  - family-names: "Pullman"
+    given-names: "Jennifer"
+  - family-names: "Cretin"
+    given-names: "Julien"
+  - family-names: "Kölbl"
+    given-names: "Stefan"
+  - family-names: "Invernizzi"
+    given-names: "Luca"
+  - family-names: "Bursztein"
+    given-names: "Elie"
+  - family-names: "Picod"
+    given-names: "Jean-Michel"
+  title: "Hybrid Post-Quantum Signatures in Hardware Security Keys"
+  journal: "4th ACNS Workshop on Secure Cryptographic Implementation"
+  year: 2023
+  month: 6

Cargo.toml

@@ -5,38 +5,46 @@ authors = [
   "Fabian Kaczmarczyck <kaczmarczyck@google.com>",
   "Guillaume Endignoux <guillaumee@google.com>",
   "Jean-Michel Picod <jmichel@google.com>",
+  "Julien Cretin <cretin@google.com>",
 ]
 license = "Apache-2.0"
 edition = "2018"
 
+[target.'cfg(any(target_arch = "arm", target_arch = "riscv32"))'.dependencies.libtock_runtime]
+path = "third_party/libtock-rs/runtime"
+default-features = false
+features = ["no_auto_layout", "no_debug_memop"]
+
 [dependencies]
-libtock_core = { path = "third_party/libtock-rs/core" }
+libtock_buttons = { path = "third_party/libtock-rs/apis/buttons" }
+libtock_platform = { path = "third_party/libtock-rs/platform" }
 libtock_drivers = { path = "third_party/libtock-drivers" }
+libtock_alarm = { path = "third_party/libtock-rs/apis/alarm" }
+libtock_console = { path = "third_party/libtock-rs/apis/console" }
+libtock_leds = { path = "third_party/libtock-rs/apis/leds" }
 lang_items = { path = "third_party/lang-items" }
+opensk = { path = "libraries/opensk", default-features = false }
 sk-cbor = { path = "libraries/cbor" }
 crypto = { path = "libraries/crypto" }
-rng256 = { path = "libraries/rng256" }
 persistent_store = { path = "libraries/persistent_store" }
+libtock_unittest = { path = "third_party/libtock-rs/unittest", optional = true }
 byteorder = { version = "1", default-features = false }
 arrayref = "0.3.6"
-subtle = { version = "2.2", default-features = false, features = ["nightly"] }
-embedded-time = "0.12.1"
-arbitrary = { version = "0.4.7", features = ["derive"], optional = true }
-rand = { version = "0.8.4", optional = true }
+rand_core = "0.6.4"
 ed25519-compact = { version = "1", default-features = false, optional = true }
-dilithium = { path = "third_party/dilithium" }
 
 [features]
+config_command = ["opensk/config_command"]
 debug_allocations = ["lang_items/debug_allocations"]
-debug_ctap = ["libtock_drivers/debug_ctap"]
+debug_ctap = ["libtock_drivers/debug_ctap", "opensk/debug_ctap"]
 panic_console = ["lang_items/panic_console"]
-std = ["crypto/std", "dilithium/std", "lang_items/std", "persistent_store/std", "rng256/std", "rand"]
+std = ["crypto/std", "lang_items/std", "persistent_store/std", "opensk/std", "libtock_unittest"]
 verbose = ["debug_ctap", "libtock_drivers/verbose_usb"]
-with_ctap1 = ["crypto/with_ctap1"]
+with_ctap1 = ["opensk/with_ctap1"]
 with_nfc = ["libtock_drivers/with_nfc"]
-vendor_hid = ["libtock_drivers/vendor_hid"]
-fuzz = ["arbitrary", "std"]
-ed25519 = ["ed25519-compact"]
+vendor_hid = ["opensk/vendor_hid"]
+ed25519 = ["ed25519-compact", "opensk/ed25519"]
+rust_crypto = ["opensk/rust_crypto"]
 
 [dev-dependencies]
 enum-iterator = "0.6.0"
@@ -44,7 +52,7 @@ enum-iterator = "0.6.0"
 [build-dependencies]
 sk-cbor = { path = "libraries/cbor" }
 uuid = { version = "0.8", features = ["v4"] }
-openssl = "0.10.36"
+openssl = "0.10.55"
 
 [profile.dev]
 panic = "abort"
@@ -55,3 +63,8 @@ panic = "abort"
 lto = true # Link Time Optimization usually reduces size of binaries and static libraries
 opt-level = "z"
 codegen-units = 1
+
+[profile.release.package]
+aes = { opt-level = 3 }
+sha2 = { opt-level = 3 }
+p256 = { opt-level = 3 }

README.md

@@ -1,114 +1,118 @@
 # <img alt="OpenSK logo" src="docs/img/OpenSK.svg" width="200px">
 
+![markdownlint](https://github.com/google/OpenSK/workflows/markdownlint/badge.svg?branch=develop)
+![pylint](https://github.com/google/OpenSK/workflows/pylint/badge.svg?branch=develop)
+![Cargo check](https://github.com/google/OpenSK/workflows/Cargo%20check/badge.svg?branch=develop)
+![Cargo format](https://github.com/google/OpenSK/workflows/Cargo%20format/badge.svg?branch=develop)
+[![Coverage Status](https://coveralls.io/repos/github/google/OpenSK/badge.svg?branch=develop)](https://coveralls.io/github/google/OpenSK?branch=develop)
+
+*News:*
+
+- 2023-08-24: [PQC paper reference](#Research)
+
 ## OpenSK
 
-This is an OpenSK fork that allows signing with a PQC Hybrid scheme. If you are looking for the original documentation, please check the
-[develop branch of its GitHub page](https://github.com/google/OpenSK/tree/develop).
+This repository contains a Rust implementation of a
+[FIDO2](https://fidoalliance.org/fido2/) security key.
+Security keys are external devices that can be used for signing in on websites.
+You can see OpenSK in action in this
+[video on YouTube](https://www.youtube.com/watch?v=klEozvpw0xg)!
+
+We intend to bring a full open source experience to security keys, from
+application to operating system. You can even 3D print your own open source
+enclosure!
+
+<img src="docs/img/enclosure.jpg" alt="OpenSK Enclosure" width="200"/>
+
+You can run OpenSK as a [Tock OS](https://tockos.org) application, or use the
+library to bring OpenSK to your own hardware.
+
+You are viewing the branch for developers. New features are developed here.
+Go to the default branch for a more stable version of OpenSK.
+
+### FIDO2
+
+OpenSK's version that implemented CTAP 2.0 was certified by the FIDO Alliance.
+
+The develop branch tracks the latest release version of the
+[CTAP specification](https://fidoalliance.org/specs/fido-v2.2-rd-20230321/fido-client-to-authenticator-protocol-v2.2-rd-20230321.html).
+This branch is not FIDO certified.
+OpenSK supports U2F, and non-discoverable credentials created with either
+protocol are compatible with the other.
+
+### :warning: Disclaimer
+
+This project is **proof-of-concept and a research platform**. It is **NOT**
+meant for a daily usage. This branch is under development, and therefore less
+rigorously tested than the numbered branches.
+
+We're still in the process of integrating the
+[ARM&reg; CryptoCell-310](https://developer.arm.com/ip-products/security-ip/cryptocell-300-family)
+embedded in the
+[Nordic nRF52840 chip](https://infocenter.nordicsemi.com/index.jsp?topic=%2Fps_nrf52840%2Fcryptocell.html)
+to enable hardware-accelerated cryptography.
+In the meantime, there are 2 options for cryptography implementations:
+
+*   Our own placeholder implementation. The code is research quality and doesn't
+    provide constant-time guarantees.
+*   The [RustCrypto](https://github.com/RustCrypto) interface. Deploy with
+    `--rust-crypto`. Note that our own ECC implementation is faster and has
+    smaller binary size, so not all boards support RustCrypto yet.
 
 ## Hardware
 
-You will need a
-[Nordic nRF52840-DK](https://www.nordicsemi.com/Software-and-Tools/Development-Kits/nRF52840-DK)
-development kit.
+You will need one the following supported boards:
+
+*   [Nordic nRF52840-DK](https://www.nordicsemi.com/Software-and-Tools/Development-Kits/nRF52840-DK)
+    development kit. This board is more convenient for development and debug
+    scenarios as the JTAG probe is already on the board.
+*   [Nordic nRF52840 Dongle](https://www.nordicsemi.com/Software-and-tools/Development-Kits/nRF52840-Dongle)
+    to have a more practical form factor.
+*   [Makerdiary nRF52840-MDK USB dongle](https://wiki.makerdiary.com/nrf52840-mdk/).
+*   [Feitian OpenSK dongle](https://feitiantech.github.io/OpenSK_USB/).
 
 ## Installation
 
 To install OpenSK,
-
 1.  follow the [general setup steps](docs/install.md),
 1.  then continue with the instructions for your specific hardware:
-	[Nordic nRF52840-DK](docs/boards/nrf52840dk.md)
+	* [Nordic nRF52840-DK](docs/boards/nrf52840dk.md)
+	* [Nordic nRF52840 Dongle](docs/boards/nrf52840_dongle.md)
+	* [Makerdiary nRF52840-MDK USB dongle](docs/boards/nrf52840_mdk.md)
+	* [Feitian OpenSK dongle](docs/boards/nrf52840_feitian.md)
 
-## PQC Experiments
+To test whether the installation was successful, visit a
+[demo website](https://webauthn.io/) and try to register and login.
+Please check our [Troubleshooting and Debugging](docs/debugging.md) section if you
+have problems with the installation process or during development. To find out what
+else you can do with your OpenSK, see [Customization](docs/customization.md).
 
-### Modes
+## Research
 
-The Dilithium mode is set at compile time. If you want to perform experiments for different modes,
-you will need to recompile. The mode is a feature, defined in
-`third_party/dilithium/Cargo.toml`. By default, it is set to
-`default = [ "dilithium5", "optimize_stack" ]`. You can change the default mode by either changing
-the number 5 to 2 or 3. Or you remove the feature for stack optimizations, e.g.
-`default = [ "dilithium2" ]`.
+We implemented post-quantum cryptography on OpenSK. The code is released under
+the [hybrid-pqc tag](https://github.com/google/OpenSK/releases/tag/hybrid-pqc).
+Our [paper](https://eprint.iacr.org/2022/1225) was published in the ACNS
+Secure Cryptographic Implementation workshop 2023 and won the best paper award.
 
-Note that some benchmarks will not run in all modes without stack optimizations. You can try to
-play with the stack size in these cases. As an example, stack painting for speed mode Dilithium2
-works if you apply the following changes:
-
-*   `APP_HEAP_SIZE = 16384` in `deploy.py`
-*   `libtock_core::stack_size! {0x1A000}` in `examples/measure_stack.rs`
-*   `STACK_SIZE = 106496;` in `nrf52840_layout.ld`
-*   Change the app break from `70 * 1024` to `104 * 1024` in `patches/tock/07-app-break-fix.patch`.
-
-For your convenience, you can also simply try:
+<details>
+<summary>Bibtex reference</summary>
 
 ```
-git apply increase_stack.patch
+@InProceedings{Ghinea2023hybrid,
+    author= {Diana Ghinea and Fabian Kaczmarczyck and Jennifer Pullman and Julien Cretin and Rafael Misoczki and Stefan Kölbl and Luca Invernizzi and Elie Bursztein and Jean-Michel Picod},
+    title=  {{Hybrid Post-Quantum Signatures in Hardware Security Keys}},
+    booktitle=  {{4th ACNS Workshop on Secure Cryptographic Implementation, Kyoto, Japan}},
+    month=  {June},
+    year=   {2023},
+}
 ```
 
-### Compiler flags
+</details>
 
-To trade binary size for speed, you can play with `[profile.release]` in `Cargo.toml`.
-For example, try a different compiler optimization level:
+## Contributing
 
-```
-opt-level = 3
-```
+See [Contributing.md](docs/contributing.md).
 
-### Debug output
-
-Only the CTAP commands tests are measured end to end on the host. All other experiments are
-measured on the embedded device itself and output over RTT. You can either use a client to print
-results by running the following commands in different terminals:
-
-```
-JLinkExe -device nrf52 -if swd -speed 1000 -autoconnect 1
-JLinkRTTClient
-```
-
-Or you directly output all messages to a file:
-
-```
-JLinkRTTLogger -device NRF52840_XXAA -if swd -speed 1000 -RTTchannel 0
-```
-
-### Perform Experiments
-
-The paper contains the following experiments:
-
-#### Crypto benchmarks
-
-Deploy the `crypto_bench` example and read the debug output with one of the methods above:
-
-```
-./deploy.py --board=nrf52840dk_opensk --crypto_bench
-```
-
-#### CTAP benchmarks
-
-To measure the speed of FIDO commands, run:
-
-```
-python benchmarks.py --runs=2000
-```
-
-Aggregate results will be printed, and the raw data is written to `make_durations.txt` and
-`get_durations.txt`.
-
-
-#### Stack painting
-
-Deploy the `measure_stack` example and read the debug output with one of the methods above:
-
-```
-./deploy.py --board=nrf52840dk_opensk --measure_stack
-```
-
-#### x86 benchmarks
-
-You don't need your embedded hardware for those, run:
-
-```
-cd third_party/dilithium/
-cargo bench --features std
-```
+## Reporting a Vulnerability
 
+See [SECURITY.md](SECURITY.md).

benchmarks.py

@@ -1,167 +0,0 @@
-#!/usr/bin/env python3
-# Copyright 2022 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-# Lint as: python3
-"""Script to benchmark CTAP commands using Dilithium Hybrid signatures."""
-
-from __future__ import absolute_import
-from __future__ import division
-from __future__ import print_function
-
-import argparse
-import datetime
-from subprocess import DEVNULL, STDOUT, check_call
-import sys
-from time import sleep
-from typing import Any
-import uuid
-
-import colorama
-from tqdm.auto import tqdm
-
-from fido2 import ctap
-from fido2.webauthn import PublicKeyCredentialRpEntity, PublicKeyCredentialUserEntity, PublicKeyCredentialParameters
-from fido2 import hid
-from tools.configure import fatal, info, get_opensk_devices
-
-ES256_ALGORITHM = PublicKeyCredentialParameters("public-key", -7)
-HYBRID_ALGORITHM = PublicKeyCredentialParameters("public-key", -65537)
-
-
-def error(message: str):
-  tqdm.write(message)
-
-
-def check_info(authenticator: Any):
-  """Checks if the assumed upgrade info matches the authenticator's."""
-  try:
-    info("Reading info...")
-    if HYBRID_ALGORITHM not in authenticator.info.algorithms:
-      fatal("The device does not support hybrid signatures.")
-  except ctap.CtapError as ex:
-    error(f"Failed to read OpenSK info (error: {ex}")
-
-
-def f_args(*params):
-  """Constructs a dict from a list of arguments for sending a CBOR command.
-    None elements will be omitted.
-    :param params: Arguments, in order, to add to the command.
-    :return: The input parameters as a dict.
-    """
-  return dict((i, v) for i, v in enumerate(params, 1) if v is not None)
-
-
-def compute_stats(elapsed):
-  n = len(elapsed)
-  mean = sum(elapsed) / n
-  variance = sum((x - mean)**2 for x in elapsed) / n
-  std_dev = variance**0.5
-  return (mean, std_dev)
-
-
-def get_authenticator():
-  devices = None
-  while not devices:
-    try:
-      devices = get_opensk_devices(False)
-    except Exception as e:  # pylint: disable=broad-except
-      error(str(e))
-      check_call(["nrfjprog", "--reset", "--family", "NRF52"],
-                 stdout=DEVNULL,
-                 stderr=STDOUT)
-      sleep(0.1)
-  return devices[0]
-
-
-def main(args):
-  colorama.init()
-
-  authenticator = get_authenticator()
-  # If the device supports it, wink to show which device we use.
-  if authenticator.device.capabilities & hid.CAPABILITY.WINK:
-    authenticator.device.wink()
-  aaguid = uuid.UUID(bytes=authenticator.get_info().aaguid)
-  check_info(authenticator)
-  info(f"Testing OpenSK device AAGUID {aaguid} ({authenticator.device}).")
-
-  make_durations = []
-  get_durations = []
-
-  for _ in tqdm(range(args.runs), file=sys.stdout):
-    authenticator = get_authenticator()
-    try:
-      start = datetime.datetime.now()
-      result = authenticator.make_credential(
-          client_data_hash=bytes(32),
-          rp=PublicKeyCredentialRpEntity(id="example.com", name="Example"),
-          user=PublicKeyCredentialUserEntity(id=b"diana", name="Diana"),
-          key_params=[HYBRID_ALGORITHM],
-      )
-      end = datetime.datetime.now()
-      make_delta = (end - start).total_seconds() * 1000.0
-      make_durations.append(make_delta)
-
-      credential_data = result.auth_data.credential_data
-      credential_id_length = 256 * credential_data[16] + credential_data[17]
-      credential_id = credential_data[18:18 + credential_id_length]
-      allow_list = [{"type": "public-key", "id": credential_id}]
-
-      start = datetime.datetime.now()
-      _ = authenticator.get_assertion(
-          rp_id="example.com",
-          client_data_hash=bytes(32),
-          allow_list=allow_list,
-      )
-      end = datetime.datetime.now()
-      get_delta = (end - start).total_seconds() * 1000.0
-      get_durations.append(get_delta)
-
-      with open("make_durations.txt", "a", encoding="utf-8") as file_make:
-        file_make.write(str(make_delta) + ",\n")
-      with open("get_durations.txt", "a", encoding="utf-8") as file_get:
-        file_get.write(str(get_delta) + ",\n")
-
-    except ctap.CtapError as ex:
-      message = "Failed to make a hybrid signature with OpenSK"
-      if ex.code.value == ctap.CtapError.ERR.INVALID_COMMAND:
-        error(f"{message} (unsupported command).")
-      elif ex.code.value == ctap.CtapError.ERR.INVALID_PARAMETER:
-        error(f"{message} (invalid parameter, maybe a wrong byte array size?).")
-      elif ex.code.value == 0xF2:  # VENDOR_INTERNAL_ERROR
-        error(f"{message} (internal conditions not met).")
-      elif ex.code.value == 0xF3:  # VENDOR_HARDWARE_FAILURE
-        error(f"{message} (internal hardware error).")
-      else:
-        error(f"{message} (unexpected error: {ex})")
-    except Exception as e:  # pylint: disable=broad-except
-      error(str(e))
-
-  info(f"Successful operations: {len(make_durations)} and {len(get_durations)}")
-  info("\nMake Credential benchmark:")
-  (mean, std_dev) = compute_stats(make_durations)
-  info(f"Average: {mean} ms/iter (standard deviation: {std_dev} ms/iter)")
-  info("\nGet Assertion benchmark:")
-  (mean, std_dev) = compute_stats(get_durations)
-  info(f"Average: {mean} ms/iter (standard deviation: {std_dev} ms/iter)")
-
-
-if __name__ == "__main__":
-  parser = argparse.ArgumentParser()
-  parser.add_argument(
-      "--runs",
-      type=int,
-      default=1000,
-      help=("How many iterations to use."),
-  )
-  main(parser.parse_args())

boards/nordic/nrf52840_dongle_opensk/src/io.rs

@@ -7,8 +7,7 @@ use kernel::hil::led;
 use kernel::hil::uart::{self, Configure};
 use nrf52840::gpio::Pin;
 
-use crate::CHIP;
-use crate::PROCESSES;
+use crate::{CHIP, PROCESSES, PROCESS_PRINTER};
 
 struct Writer {
     initialized: bool,
@@ -31,7 +30,7 @@ impl IoWrite for Writer {
         let uart = nrf52840::uart::Uarte::new();
         if !self.initialized {
             self.initialized = true;
-            uart.configure(uart::Parameters {
+            let _ = uart.configure(uart::Parameters {
                 baud_rate: 115200,
                 stop_bits: uart::StopBits::One,
                 parity: uart::Parity::None,
@@ -64,5 +63,6 @@ pub unsafe extern "C" fn panic_fmt(pi: &PanicInfo) -> ! {
         &cortexm4::support::nop,
         &PROCESSES,
         &CHIP,
+        &PROCESS_PRINTER,
     )
 }

boards/nordic/nrf52840_dongle_opensk/src/main.rs

@@ -7,15 +7,18 @@
 // Disable this attribute when documenting, as a workaround for
 // https://github.com/rust-lang/rust/issues/62184.
 #![cfg_attr(not(doc), no_main)]
-#![feature(const_in_array_repeat_expressions)]
 #![deny(missing_docs)]
 
-use kernel::common::dynamic_deferred_call::{DynamicDeferredCall, DynamicDeferredCallClientState};
+use capsules::virtual_alarm::VirtualMuxAlarm;
 use kernel::component::Component;
+use kernel::dynamic_deferred_call::{DynamicDeferredCall, DynamicDeferredCallClientState};
 use kernel::hil::led::LedLow;
 use kernel::hil::time::Counter;
+use kernel::platform::{KernelResources, SyscallDriverLookup, SyscallFilter};
+use kernel::scheduler::round_robin::RoundRobinSched;
 #[allow(unused_imports)]
 use kernel::{capabilities, create_capability, debug, debug_gpio, debug_verbose, static_init};
+use kernel::{StorageLocation, StorageType};
 use nrf52840::gpio::Pin;
 use nrf52840::interrupt_service::Nrf52840DefaultPeripherals;
 use nrf52_components::{self, UartChannel, UartPins};
@@ -52,34 +55,43 @@ static STRINGS: &'static [&'static str] = &[
     "OpenSK",
     // Serial number
     "v1.0",
+    // Interface description + main HID string
+    "FIDO2",
+    // vendor HID string
+    "Vendor HID",
 ];
 
 // State for loading and holding applications.
 // How should the kernel respond when a process faults.
-const FAULT_RESPONSE: kernel::procs::FaultResponse = kernel::procs::FaultResponse::Panic;
+const FAULT_RESPONSE: kernel::process::PanicFaultPolicy = kernel::process::PanicFaultPolicy {};
 
 // Number of concurrent processes this platform supports.
 const NUM_PROCS: usize = 8;
 
-static mut PROCESSES: [Option<&'static dyn kernel::procs::ProcessType>; NUM_PROCS] =
+static mut PROCESSES: [Option<&'static dyn kernel::process::Process>; NUM_PROCS] =
     [None; NUM_PROCS];
 
-static mut STORAGE_LOCATIONS: [kernel::StorageLocation; 2] = [
+static mut STORAGE_LOCATIONS: [StorageLocation; 2] = [
     // We implement NUM_PAGES = 20 as 16 + 4 to satisfy the MPU.
-    kernel::StorageLocation {
+    StorageLocation {
         address: 0xC0000,
         size: 0x10000, // 16 pages
-        storage_type: kernel::StorageType::Store,
+        storage_type: StorageType::Store,
     },
-    kernel::StorageLocation {
+    StorageLocation {
         address: 0xD0000,
         size: 0x4000, // 4 pages
-        storage_type: kernel::StorageType::Store,
+        storage_type: StorageType::Store,
     },
 ];
 
 // Static reference to chip for panic dumps
 static mut CHIP: Option<&'static nrf52840::chip::NRF52<Nrf52840DefaultPeripherals>> = None;
+// Static reference to process printer for panic dumps
+static mut PROCESS_PRINTER: Option<&'static kernel::process::ProcessPrinterText> = None;
+
+/// Flash buffer for the custom nvmc driver
+static mut APP_FLASH_BUFFER: [u8; 0x1000] = [0; 0x1000];
 
 /// Dummy buffer that causes the linker to reserve enough space for the stack.
 #[no_mangle]
@@ -91,6 +103,7 @@ pub struct Platform {
     button: &'static capsules::button::Button<'static, nrf52840::gpio::GPIOPin<'static>>,
     pconsole: &'static capsules::process_console::ProcessConsole<
         'static,
+        VirtualMuxAlarm<'static, nrf52840::rtc::Rtc<'static>>,
         components::process_console::Capability,
     >,
     console: &'static capsules::console::Console<'static>,
@@ -98,9 +111,10 @@ pub struct Platform {
     led: &'static capsules::led::LedDriver<
         'static,
         LedLow<'static, nrf52840::gpio::GPIOPin<'static>>,
+        4,
     >,
     rng: &'static capsules::rng::RngDriver<'static>,
-    ipc: kernel::ipc::IPC<NUM_PROCS>,
+    ipc: kernel::ipc::IPC<{ NUM_PROCS as u8 }>,
     analog_comparator: &'static capsules::analog_comparator::AnalogComparator<
         'static,
         nrf52840::acomp::Comparator<'static>,
@@ -109,19 +123,20 @@ pub struct Platform {
         'static,
         capsules::virtual_alarm::VirtualMuxAlarm<'static, nrf52840::rtc::Rtc<'static>>,
     >,
+    scheduler: &'static RoundRobinSched<'static>,
+    systick: cortexm4::systick::SysTick,
     nvmc: &'static nrf52840::nvmc::SyscallDriver,
     usb: &'static capsules::usb::usb_ctap::CtapUsbSyscallDriver<
         'static,
         'static,
         nrf52840::usbd::Usbd<'static>,
     >,
-    crp: &'static capsules::firmware_protection::FirmwareProtection<nrf52840::uicr::Uicr>,
 }
 
-impl kernel::Platform for Platform {
+impl SyscallDriverLookup for Platform {
     fn with_driver<F, R>(&self, driver_num: usize, f: F) -> R
     where
-        F: FnOnce(Option<&dyn kernel::Driver>) -> R,
+        F: FnOnce(Option<&dyn kernel::syscall::SyscallDriver>) -> R,
     {
         match driver_num {
             capsules::console::DRIVER_NUM => f(Some(self.console)),
@@ -133,45 +148,88 @@ impl kernel::Platform for Platform {
             capsules::analog_comparator::DRIVER_NUM => f(Some(self.analog_comparator)),
             nrf52840::nvmc::DRIVER_NUM => f(Some(self.nvmc)),
             capsules::usb::usb_ctap::DRIVER_NUM => f(Some(self.usb)),
-            capsules::firmware_protection::DRIVER_NUM => f(Some(self.crp)),
             kernel::ipc::DRIVER_NUM => f(Some(&self.ipc)),
             _ => f(None),
         }
     }
+}
 
+impl SyscallFilter for Platform {
     fn filter_syscall(
         &self,
-        process: &dyn kernel::procs::ProcessType,
+        process: &dyn kernel::process::Process,
         syscall: &kernel::syscall::Syscall,
-    ) -> Result<(), kernel::ReturnCode> {
+    ) -> Result<(), kernel::errorcode::ErrorCode> {
         use kernel::syscall::Syscall;
         match *syscall {
-            Syscall::COMMAND {
+            Syscall::Command {
                 driver_number: nrf52840::nvmc::DRIVER_NUM,
                 subdriver_number: cmd,
                 arg0: ptr,
                 arg1: len,
             } if (cmd == 2 || cmd == 3) && !process.fits_in_storage_location(ptr, len) => {
-                Err(kernel::ReturnCode::EINVAL)
+                Err(kernel::ErrorCode::INVAL)
             }
             _ => Ok(()),
         }
     }
 }
 
-/// Entry point in the vector table called on hard reset.
-#[no_mangle]
-pub unsafe fn reset_handler() {
-    // Loads relocations and clears BSS
-    nrf52840::init();
+impl KernelResources<nrf52840::chip::NRF52<'static, Nrf52840DefaultPeripherals<'static>>>
+    for Platform
+{
+    type SyscallDriverLookup = Self;
+    type SyscallFilter = Self;
+    type ProcessFault = ();
+    type Scheduler = RoundRobinSched<'static>;
+    type SchedulerTimer = cortexm4::systick::SysTick;
+    type WatchDog = ();
+    type ContextSwitchCallback = ();
 
-    let ppi = static_init!(nrf52840::ppi::Ppi, nrf52840::ppi::Ppi::new());
+    fn syscall_driver_lookup(&self) -> &Self::SyscallDriverLookup {
+        &self
+    }
+    fn syscall_filter(&self) -> &Self::SyscallFilter {
+        &self
+    }
+    fn process_fault(&self) -> &Self::ProcessFault {
+        &()
+    }
+    fn scheduler(&self) -> &Self::Scheduler {
+        self.scheduler
+    }
+    fn scheduler_timer(&self) -> &Self::SchedulerTimer {
+        &self.systick
+    }
+    fn watchdog(&self) -> &Self::WatchDog {
+        &()
+    }
+    fn context_switch_callback(&self) -> &Self::ContextSwitchCallback {
+        &()
+    }
+}
+
+/// This is in a separate, inline(never) function so that its stack frame is
+/// removed when this function returns. Otherwise, the stack space used for
+/// these static_inits is wasted.
+#[inline(never)]
+unsafe fn get_peripherals() -> &'static mut Nrf52840DefaultPeripherals<'static> {
     // Initialize chip peripheral drivers
     let nrf52840_peripherals = static_init!(
         Nrf52840DefaultPeripherals,
-        Nrf52840DefaultPeripherals::new(ppi)
+        Nrf52840DefaultPeripherals::new()
     );
 
+    nrf52840_peripherals
+}
+
+/// Main function called after RAM initialized.
+#[no_mangle]
+pub unsafe fn main() {
+    nrf52840::init();
+
+    let nrf52840_peripherals = get_peripherals();
+
     // set up circular peripheral dependencies
     nrf52840_peripherals.init();
     let base_peripherals = &nrf52840_peripherals.nrf52;
@@ -184,6 +242,7 @@ pub unsafe fn reset_handler() {
     // GPIOs
     let gpio = components::gpio::GpioComponent::new(
         board_kernel,
+        capsules::gpio::DRIVER_NUM,
         components::gpio_component_helper!(
             nrf52840::gpio::GPIOPin,
             // left side of the USB plug
@@ -219,6 +278,7 @@ pub unsafe fn reset_handler() {
 
     let button = components::button::ButtonComponent::new(
         board_kernel,
+        capsules::button::DRIVER_NUM,
         components::button_component_helper!(
             nrf52840::gpio::GPIOPin,
             (
@@ -230,15 +290,12 @@ pub unsafe fn reset_handler() {
     )
     .finalize(components::button_component_buf!(nrf52840::gpio::GPIOPin));
 
-    let led = components::led::LedsComponent::new(components::led_component_helper!(
+    let led = components::led::LedsComponent::new().finalize(components::led_component_helper!(
         LedLow<'static, nrf52840::gpio::GPIOPin>,
         LedLow::new(&nrf52840_peripherals.gpio_port[LED1_PIN]),
         LedLow::new(&nrf52840_peripherals.gpio_port[LED2_R_PIN]),
         LedLow::new(&nrf52840_peripherals.gpio_port[LED2_G_PIN]),
         LedLow::new(&nrf52840_peripherals.gpio_port[LED2_B_PIN]),
-    ))
-    .finalize(components::led_component_buf!(
-        LedLow<'static, nrf52840::gpio::GPIOPin>
     ));
 
     let chip = static_init!(
@@ -272,10 +329,14 @@ pub unsafe fn reset_handler() {
     );
 
     let rtc = &base_peripherals.rtc;
-    rtc.start();
+    let _ = rtc.start();
     let mux_alarm = components::alarm::AlarmMuxComponent::new(rtc)
         .finalize(components::alarm_mux_component_helper!(nrf52840::rtc::Rtc));
-    let alarm = components::alarm::AlarmDriverComponent::new(board_kernel, mux_alarm)
+    let alarm = components::alarm::AlarmDriverComponent::new(
+        board_kernel,
+        capsules::alarm::DRIVER_NUM,
+        mux_alarm,
+    )
     .finalize(components::alarm_component_helper!(nrf52840::rtc::Rtc));
     let uart_channel = UartChannel::Pins(UartPins::new(UART_RTS, UART_TXD, UART_CTS, UART_RXD));
     let channel = nrf52_components::UartChannelComponent::new(
@@ -293,21 +354,41 @@ pub unsafe fn reset_handler() {
     );
     DynamicDeferredCall::set_global_instance(dynamic_deferred_caller);
 
+    let process_printer =
+        components::process_printer::ProcessPrinterTextComponent::new().finalize(());
+    PROCESS_PRINTER = Some(process_printer);
+
     // Create a shared UART channel for the console and for kernel debug.
     let uart_mux =
         components::console::UartMuxComponent::new(channel, 115200, dynamic_deferred_caller)
             .finalize(());
 
-    let pconsole =
-        components::process_console::ProcessConsoleComponent::new(board_kernel, uart_mux)
-            .finalize(());
+    let pconsole = components::process_console::ProcessConsoleComponent::new(
+        board_kernel,
+        uart_mux,
+        mux_alarm,
+        process_printer,
+    )
+    .finalize(components::process_console_component_helper!(
+        nrf52840::rtc::Rtc<'static>
+    ));
 
     // Setup the console.
-    let console = components::console::ConsoleComponent::new(board_kernel, uart_mux).finalize(());
+    let console = components::console::ConsoleComponent::new(
+        board_kernel,
+        capsules::console::DRIVER_NUM,
+        uart_mux,
+    )
+    .finalize(components::console_component_helper!());
     // Create the debugger object that handles calls to `debug!()`.
     components::debug_writer::DebugWriterComponent::new(uart_mux).finalize(());
 
-    let rng = components::rng::RngComponent::new(board_kernel, &base_peripherals.trng).finalize(());
+    let rng = components::rng::RngComponent::new(
+        board_kernel,
+        capsules::rng::DRIVER_NUM,
+        &base_peripherals.trng,
+    )
+    .finalize(());
 
     // Initialize AC using AIN5 (P0.29) as VIN+ and VIN- as AIN0 (P0.02)
     // These are hardcoded pin assignments specified in the driver
@@ -317,6 +398,8 @@ pub unsafe fn reset_handler() {
             nrf52840::acomp::Channel,
             &nrf52840::acomp::CHANNEL_AC0
         ),
+        board_kernel,
+        capsules::analog_comparator::DRIVER_NUM,
     )
     .finalize(components::acomp_component_buf!(
         nrf52840::acomp::Comparator
@@ -326,8 +409,9 @@ pub unsafe fn reset_handler() {
         nrf52840::nvmc::SyscallDriver,
         nrf52840::nvmc::SyscallDriver::new(
             &base_peripherals.nvmc,
-            board_kernel.create_grant(&memory_allocation_capability),
+            board_kernel.create_grant(nrf52840::nvmc::DRIVER_NUM, &memory_allocation_capability),
             dynamic_deferred_caller,
+            &mut APP_FLASH_BUFFER,
         )
     );
     nvmc.set_deferred_handle(
@@ -339,24 +423,20 @@ pub unsafe fn reset_handler() {
     // Configure USB controller
     let usb = components::usb_ctap::UsbCtapComponent::new(
         board_kernel,
+        capsules::usb::usb_ctap::DRIVER_NUM,
         &nrf52840_peripherals.usbd,
         capsules::usb::usbc_client::MAX_CTRL_PACKET_SIZE_NRF52840,
         VENDOR_ID,
         PRODUCT_ID,
         STRINGS,
     )
-    .finalize(components::usb_ctap_component_buf!(nrf52840::usbd::Usbd));
-
-    let crp = components::firmware_protection::FirmwareProtectionComponent::new(
-        board_kernel,
-        nrf52840::uicr::Uicr::new(),
-    )
-    .finalize(components::firmware_protection_component_helper!(
-        nrf52840::uicr::Uicr
-    ));
+    .finalize(components::usb_ctap_component_helper!(nrf52840::usbd::Usbd));
 
     nrf52_components::NrfClockComponent::new(&base_peripherals.clock).finalize(());
 
+    let scheduler = components::sched::round_robin::RoundRobinComponent::new(&PROCESSES)
+        .finalize(components::rr_component_helper!(NUM_PROCS));
+
     let platform = Platform {
         button,
         pconsole,
@@ -368,15 +448,20 @@ pub unsafe fn reset_handler() {
         analog_comparator,
         nvmc,
         usb,
-        crp,
-        ipc: kernel::ipc::IPC::new(board_kernel, &memory_allocation_capability),
+        ipc: kernel::ipc::IPC::new(
+            board_kernel,
+            kernel::ipc::DRIVER_NUM,
+            &memory_allocation_capability,
+        ),
+        scheduler,
+        systick: cortexm4::systick::SysTick::new_with_calibration(6400_0000),
     };
 
-    platform.pconsole.start();
+    let _ = platform.pconsole.start();
     debug!("Initialization complete. Entering main loop\r");
     debug!("{}", &nrf52840::ficr::FICR_INSTANCE);
 
-    /// These symbols are defined in the linker script.
+    // These symbols are defined in the linker script.
     extern "C" {
         /// Beginning of the ROM region containing app images.
         static _sapps: u8;
@@ -388,7 +473,7 @@ pub unsafe fn reset_handler() {
         static _eappmem: u8;
     }
 
-    kernel::procs::load_processes(
+    kernel::process::load_processes(
         board_kernel,
         chip,
         core::slice::from_raw_parts(
@@ -400,7 +485,7 @@ pub unsafe fn reset_handler() {
             &_eappmem as *const u8 as usize - &_sappmem as *const u8 as usize,
         ),
         &mut PROCESSES,
-        FAULT_RESPONSE,
+        &FAULT_RESPONSE,
         &process_management_capability,
     )
     .unwrap_or_else(|err| {
@@ -408,13 +493,5 @@ pub unsafe fn reset_handler() {
         debug!("{:?}", err);
     });
 
-    let scheduler = components::sched::round_robin::RoundRobinComponent::new(&PROCESSES)
-        .finalize(components::rr_component_helper!(NUM_PROCS));
-    board_kernel.kernel_loop(
-        &platform,
-        chip,
-        Some(&platform.ipc),
-        scheduler,
-        &main_loop_capability,
-    );
+    board_kernel.kernel_loop(&platform, chip, Some(&platform.ipc), &main_loop_capability);
 }

boards/nordic/nrf52840_mdk_dfu/src/io.rs

@@ -7,8 +7,7 @@ use kernel::hil::led;
 use kernel::hil::uart::{self, Configure};
 use nrf52840::gpio::Pin;
 
-use crate::CHIP;
-use crate::PROCESSES;
+use crate::{CHIP, PROCESSES, PROCESS_PRINTER};
 
 struct Writer {
     initialized: bool,
@@ -31,7 +30,7 @@ impl IoWrite for Writer {
         let uart = nrf52840::uart::Uarte::new();
         if !self.initialized {
             self.initialized = true;
-            uart.configure(uart::Parameters {
+            let _ = uart.configure(uart::Parameters {
                 baud_rate: 115200,
                 stop_bits: uart::StopBits::One,
                 parity: uart::Parity::None,
@@ -64,5 +63,6 @@ pub unsafe extern "C" fn panic_fmt(pi: &PanicInfo) -> ! {
         &cortexm4::support::nop,
         &PROCESSES,
         &CHIP,
+        &PROCESS_PRINTER,
     )
 }

boards/nordic/nrf52840_mdk_dfu/src/main.rs

@@ -7,13 +7,15 @@
 // Disable this attribute when documenting, as a workaround for
 // https://github.com/rust-lang/rust/issues/62184.
 #![cfg_attr(not(doc), no_main)]
-#![feature(const_in_array_repeat_expressions)]
 #![deny(missing_docs)]
 
-use kernel::common::dynamic_deferred_call::{DynamicDeferredCall, DynamicDeferredCallClientState};
+use capsules::virtual_alarm::VirtualMuxAlarm;
 use kernel::component::Component;
+use kernel::dynamic_deferred_call::{DynamicDeferredCall, DynamicDeferredCallClientState};
 use kernel::hil::led::LedLow;
 use kernel::hil::time::Counter;
+use kernel::platform::{KernelResources, SyscallDriverLookup, SyscallFilter};
+use kernel::scheduler::round_robin::RoundRobinSched;
 #[allow(unused_imports)]
 use kernel::{capabilities, create_capability, debug, debug_gpio, debug_verbose, static_init};
 use nrf52840::gpio::Pin;
@@ -46,16 +48,20 @@ static STRINGS: &'static [&'static str] = &[
     "OpenSK",
     // Serial number
     "v1.0",
+    // Interface description + main HID string
+    "FIDO2",
+    // vendor HID string
+    "Vendor HID",
 ];
 
 // State for loading and holding applications.
 // How should the kernel respond when a process faults.
-const FAULT_RESPONSE: kernel::procs::FaultResponse = kernel::procs::FaultResponse::Panic;
+const FAULT_RESPONSE: kernel::process::PanicFaultPolicy = kernel::process::PanicFaultPolicy {};
 
 // Number of concurrent processes this platform supports.
 const NUM_PROCS: usize = 8;
 
-static mut PROCESSES: [Option<&'static dyn kernel::procs::ProcessType>; NUM_PROCS] =
+static mut PROCESSES: [Option<&'static dyn kernel::process::Process>; NUM_PROCS] =
     [None; NUM_PROCS];
 
 static mut STORAGE_LOCATIONS: [kernel::StorageLocation; 2] = [
@@ -74,6 +80,9 @@ static mut STORAGE_LOCATIONS: [kernel::StorageLocation; 2] = [
 
 // Static reference to chip for panic dumps
 static mut CHIP: Option<&'static nrf52840::chip::NRF52<Nrf52840DefaultPeripherals>> = None;
+static mut PROCESS_PRINTER: Option<&'static kernel::process::ProcessPrinterText> = None;
+/// Flash buffer for the custom nvmc driver
+static mut APP_FLASH_BUFFER: [u8; 0x1000] = [0; 0x1000];
 
 /// Dummy buffer that causes the linker to reserve enough space for the stack.
 #[no_mangle]
@@ -85,16 +94,18 @@ pub struct Platform {
     button: &'static capsules::button::Button<'static, nrf52840::gpio::GPIOPin<'static>>,
     pconsole: &'static capsules::process_console::ProcessConsole<
         'static,
+        VirtualMuxAlarm<'static, nrf52840::rtc::Rtc<'static>>,
         components::process_console::Capability,
     >,
     console: &'static capsules::console::Console<'static>,
     gpio: &'static capsules::gpio::GPIO<'static, nrf52840::gpio::GPIOPin<'static>>,
     led: &'static capsules::led::LedDriver<
         'static,
-        LedLow<'static, nrf52840::gpio::GPIOPin<'static>>,
+        kernel::hil::led::LedLow<'static, nrf52840::gpio::GPIOPin<'static>>,
+        3,
     >,
     rng: &'static capsules::rng::RngDriver<'static>,
-    ipc: kernel::ipc::IPC<NUM_PROCS>,
+    ipc: kernel::ipc::IPC<{ NUM_PROCS as u8 }>,
     analog_comparator: &'static capsules::analog_comparator::AnalogComparator<
         'static,
         nrf52840::acomp::Comparator<'static>,
@@ -103,6 +114,8 @@ pub struct Platform {
         'static,
         capsules::virtual_alarm::VirtualMuxAlarm<'static, nrf52840::rtc::Rtc<'static>>,
     >,
+    scheduler: &'static RoundRobinSched<'static>,
+    systick: cortexm4::systick::SysTick,
     nvmc: &'static nrf52840::nvmc::SyscallDriver,
     usb: &'static capsules::usb::usb_ctap::CtapUsbSyscallDriver<
         'static,
@@ -111,10 +124,10 @@ pub struct Platform {
     >,
 }
 
-impl kernel::Platform for Platform {
+impl SyscallDriverLookup for Platform {
     fn with_driver<F, R>(&self, driver_num: usize, f: F) -> R
     where
-        F: FnOnce(Option<&dyn kernel::Driver>) -> R,
+        F: FnOnce(Option<&dyn kernel::syscall::SyscallDriver>) -> R,
     {
         match driver_num {
             capsules::console::DRIVER_NUM => f(Some(self.console)),
@@ -130,39 +143,82 @@ impl kernel::Platform for Platform {
             _ => f(None),
         }
     }
+}
 
+impl SyscallFilter for Platform {
     fn filter_syscall(
         &self,
-        process: &dyn kernel::procs::ProcessType,
+        process: &dyn kernel::process::Process,
         syscall: &kernel::syscall::Syscall,
-    ) -> Result<(), kernel::ReturnCode> {
+    ) -> Result<(), kernel::errorcode::ErrorCode> {
         use kernel::syscall::Syscall;
         match *syscall {
-            Syscall::COMMAND {
+            Syscall::Command {
                 driver_number: nrf52840::nvmc::DRIVER_NUM,
                 subdriver_number: cmd,
                 arg0: ptr,
                 arg1: len,
             } if (cmd == 2 || cmd == 3) && !process.fits_in_storage_location(ptr, len) => {
-                Err(kernel::ReturnCode::EINVAL)
+                Err(kernel::ErrorCode::INVAL)
             }
             _ => Ok(()),
         }
     }
 }
 
-/// Entry point in the vector table called on hard reset.
-#[no_mangle]
-pub unsafe fn reset_handler() {
-    // Loads relocations and clears BSS
-    nrf52840::init();
-
-    let ppi = static_init!(nrf52840::ppi::Ppi, nrf52840::ppi::Ppi::new());
+/// This is in a separate, inline(never) function so that its stack frame is
+/// removed when this function returns. Otherwise, the stack space used for
+/// these static_inits is wasted.
+#[inline(never)]
+unsafe fn get_peripherals() -> &'static mut Nrf52840DefaultPeripherals<'static> {
     // Initialize chip peripheral drivers
     let nrf52840_peripherals = static_init!(
         Nrf52840DefaultPeripherals,
-        Nrf52840DefaultPeripherals::new(ppi)
+        Nrf52840DefaultPeripherals::new()
     );
+    nrf52840_peripherals
+}
+impl KernelResources<nrf52840::chip::NRF52<'static, Nrf52840DefaultPeripherals<'static>>>
+    for Platform
+{
+    type SyscallDriverLookup = Self;
+    type SyscallFilter = Self;
+    type ProcessFault = ();
+    type Scheduler = RoundRobinSched<'static>;
+    type SchedulerTimer = cortexm4::systick::SysTick;
+    type WatchDog = ();
+    type ContextSwitchCallback = ();
+    fn syscall_driver_lookup(&self) -> &Self::SyscallDriverLookup {
+        &self
+    }
+    fn syscall_filter(&self) -> &Self::SyscallFilter {
+        &self
+    }
+    fn process_fault(&self) -> &Self::ProcessFault {
+        &()
+    }
+    fn scheduler(&self) -> &Self::Scheduler {
+        self.scheduler
+    }
+    fn scheduler_timer(&self) -> &Self::SchedulerTimer {
+        &self.systick
+    }
+    fn watchdog(&self) -> &Self::WatchDog {
+        &()
+    }
+    fn context_switch_callback(&self) -> &Self::ContextSwitchCallback {
+        &()
+    }
+}
+
+/// Main function called after RAM initialized.
+#[no_mangle]
+pub unsafe fn main() {
+    // Loads relocations and clears BSS
+    nrf52840::init();
+
+    // Initialize chip peripheral drivers
+    let nrf52840_peripherals = get_peripherals();
 
     // set up circular peripheral dependencies
     nrf52840_peripherals.init();
@@ -175,6 +231,7 @@ pub unsafe fn reset_handler() {
     // GPIOs
     let gpio = components::gpio::GpioComponent::new(
         board_kernel,
+        capsules::gpio::DRIVER_NUM,
         components::gpio_component_helper!(
             nrf52840::gpio::GPIOPin,
             // left side of the USB plug. Right side is used for UART
@@ -189,6 +246,7 @@ pub unsafe fn reset_handler() {
 
     let button = components::button::ButtonComponent::new(
         board_kernel,
+        capsules::button::DRIVER_NUM,
         components::button_component_helper!(
             nrf52840::gpio::GPIOPin,
             (
@@ -200,14 +258,11 @@ pub unsafe fn reset_handler() {
     )
     .finalize(components::button_component_buf!(nrf52840::gpio::GPIOPin));
 
-    let led = components::led::LedsComponent::new(components::led_component_helper!(
+    let led = components::led::LedsComponent::new().finalize(components::led_component_helper!(
         LedLow<'static, nrf52840::gpio::GPIOPin>,
         LedLow::new(&nrf52840_peripherals.gpio_port[LED1_R_PIN]),
         LedLow::new(&nrf52840_peripherals.gpio_port[LED1_G_PIN]),
         LedLow::new(&nrf52840_peripherals.gpio_port[LED1_B_PIN]),
-    ))
-    .finalize(components::led_component_buf!(
-        LedLow<'static, nrf52840::gpio::GPIOPin>
     ));
 
     let chip = static_init!(
@@ -233,10 +288,14 @@ pub unsafe fn reset_handler() {
     );
 
     let rtc = &base_peripherals.rtc;
-    rtc.start();
+    let _ = rtc.start();
     let mux_alarm = components::alarm::AlarmMuxComponent::new(rtc)
         .finalize(components::alarm_mux_component_helper!(nrf52840::rtc::Rtc));
-    let alarm = components::alarm::AlarmDriverComponent::new(board_kernel, mux_alarm)
+    let alarm = components::alarm::AlarmDriverComponent::new(
+        board_kernel,
+        capsules::alarm::DRIVER_NUM,
+        mux_alarm,
+    )
     .finalize(components::alarm_component_helper!(nrf52840::rtc::Rtc));
     let uart_channel = UartChannel::Pins(UartPins::new(UART_RTS, UART_TXD, UART_CTS, UART_RXD));
     let channel = nrf52_components::UartChannelComponent::new(
@@ -253,22 +312,40 @@ pub unsafe fn reset_handler() {
         DynamicDeferredCall::new(dynamic_deferred_call_clients)
     );
     DynamicDeferredCall::set_global_instance(dynamic_deferred_caller);
+    let process_printer =
+        components::process_printer::ProcessPrinterTextComponent::new().finalize(());
+    PROCESS_PRINTER = Some(process_printer);
 
     // Create a shared UART channel for the console and for kernel debug.
     let uart_mux =
         components::console::UartMuxComponent::new(channel, 115200, dynamic_deferred_caller)
             .finalize(());
 
-    let pconsole =
-        components::process_console::ProcessConsoleComponent::new(board_kernel, uart_mux)
-            .finalize(());
+    let pconsole = components::process_console::ProcessConsoleComponent::new(
+        board_kernel,
+        uart_mux,
+        mux_alarm,
+        process_printer,
+    )
+    .finalize(components::process_console_component_helper!(
+        nrf52840::rtc::Rtc<'static>
+    ));
 
     // Setup the console.
-    let console = components::console::ConsoleComponent::new(board_kernel, uart_mux).finalize(());
+    let console = components::console::ConsoleComponent::new(
+        board_kernel,
+        capsules::console::DRIVER_NUM,
+        uart_mux,
+    )
+    .finalize(components::console_component_helper!());
     // Create the debugger object that handles calls to `debug!()`.
     components::debug_writer::DebugWriterComponent::new(uart_mux).finalize(());
-
-    let rng = components::rng::RngComponent::new(board_kernel, &base_peripherals.trng).finalize(());
+    let rng = components::rng::RngComponent::new(
+        board_kernel,
+        capsules::rng::DRIVER_NUM,
+        &base_peripherals.trng,
+    )
+    .finalize(());
 
     // Initialize AC using AIN5 (P0.29) as VIN+ and VIN- as AIN0 (P0.02)
     // These are hardcoded pin assignments specified in the driver
@@ -278,6 +355,8 @@ pub unsafe fn reset_handler() {
             nrf52840::acomp::Channel,
             &nrf52840::acomp::CHANNEL_AC0
         ),
+        board_kernel,
+        capsules::analog_comparator::DRIVER_NUM,
     )
     .finalize(components::acomp_component_buf!(
         nrf52840::acomp::Comparator
@@ -287,8 +366,9 @@ pub unsafe fn reset_handler() {
         nrf52840::nvmc::SyscallDriver,
         nrf52840::nvmc::SyscallDriver::new(
             &base_peripherals.nvmc,
-            board_kernel.create_grant(&memory_allocation_capability),
+            board_kernel.create_grant(nrf52840::nvmc::DRIVER_NUM, &memory_allocation_capability),
             dynamic_deferred_caller,
+            &mut APP_FLASH_BUFFER,
         )
     );
     nvmc.set_deferred_handle(
@@ -300,16 +380,20 @@ pub unsafe fn reset_handler() {
     // Configure USB controller
     let usb = components::usb_ctap::UsbCtapComponent::new(
         board_kernel,
+        capsules::usb::usb_ctap::DRIVER_NUM,
         &nrf52840_peripherals.usbd,
         capsules::usb::usbc_client::MAX_CTRL_PACKET_SIZE_NRF52840,
         VENDOR_ID,
         PRODUCT_ID,
         STRINGS,
     )
-    .finalize(components::usb_ctap_component_buf!(nrf52840::usbd::Usbd));
+    .finalize(components::usb_ctap_component_helper!(nrf52840::usbd::Usbd));
 
     nrf52_components::NrfClockComponent::new(&base_peripherals.clock).finalize(());
 
+    let scheduler = components::sched::round_robin::RoundRobinComponent::new(&PROCESSES)
+        .finalize(components::rr_component_helper!(NUM_PROCS));
+
     let platform = Platform {
         button,
         pconsole,
@@ -321,14 +405,20 @@ pub unsafe fn reset_handler() {
         analog_comparator,
         nvmc,
         usb,
-        ipc: kernel::ipc::IPC::new(board_kernel, &memory_allocation_capability),
+        ipc: kernel::ipc::IPC::new(
+            board_kernel,
+            kernel::ipc::DRIVER_NUM,
+            &memory_allocation_capability,
+        ),
+        scheduler,
+        systick: cortexm4::systick::SysTick::new_with_calibration(64000000),
     };
 
-    platform.pconsole.start();
+    let _ = platform.pconsole.start();
     debug!("Initialization complete. Entering main loop\r");
     debug!("{}", &nrf52840::ficr::FICR_INSTANCE);
 
-    /// These symbols are defined in the linker script.
+    // These symbols are defined in the linker script.
     extern "C" {
         /// Beginning of the ROM region containing app images.
         static _sapps: u8;
@@ -340,7 +430,7 @@ pub unsafe fn reset_handler() {
         static _eappmem: u8;
     }
 
-    kernel::procs::load_processes(
+    kernel::process::load_processes(
         board_kernel,
         chip,
         core::slice::from_raw_parts(
@@ -352,7 +442,7 @@ pub unsafe fn reset_handler() {
             &_eappmem as *const u8 as usize - &_sappmem as *const u8 as usize,
         ),
         &mut PROCESSES,
-        FAULT_RESPONSE,
+        &FAULT_RESPONSE,
         &process_management_capability,
     )
     .unwrap_or_else(|err| {
@@ -360,13 +450,5 @@ pub unsafe fn reset_handler() {
         debug!("{:?}", err);
     });
 
-    let scheduler = components::sched::round_robin::RoundRobinComponent::new(&PROCESSES)
-        .finalize(components::rr_component_helper!(NUM_PROCS));
-    board_kernel.kernel_loop(
-        &platform,
-        chip,
-        Some(&platform.ipc),
-        scheduler,
-        &main_loop_capability,
-    );
+    board_kernel.kernel_loop(&platform, chip, Some(&platform.ipc), &main_loop_capability);
 }

boards/nordic/nrf52840dk_opensk/src/io.rs

@@ -10,6 +10,7 @@ use nrf52840::gpio::Pin;
 
 use crate::CHIP;
 use crate::PROCESSES;
+use crate::PROCESS_PRINTER;
 
 enum Writer {
     WriterUart(/* initialized */ bool),
@@ -48,7 +49,7 @@ impl IoWrite for Writer {
                 let uart = nrf52840::uart::Uarte::new();
                 if !*initialized {
                     *initialized = true;
-                    uart.configure(uart::Parameters {
+                    let _ = uart.configure(uart::Parameters {
                         baud_rate: 115200,
                         stop_bits: uart::StopBits::One,
                         parity: uart::Parity::None,
@@ -102,5 +103,6 @@ pub unsafe extern "C" fn panic_fmt(pi: &PanicInfo) -> ! {
         &cortexm4::support::nop,
         &PROCESSES,
         &CHIP,
+        &PROCESS_PRINTER,
     )
 }

boards/nordic/nrf52840dk_opensk/src/main.rs

@@ -64,14 +64,16 @@
 // Disable this attribute when documenting, as a workaround for
 // https://github.com/rust-lang/rust/issues/62184.
 #![cfg_attr(not(doc), no_main)]
-#![feature(const_in_array_repeat_expressions)]
 #![deny(missing_docs)]
 
+use capsules::virtual_alarm::VirtualMuxAlarm;
 use core::env;
-use kernel::common::dynamic_deferred_call::{DynamicDeferredCall, DynamicDeferredCallClientState};
 use kernel::component::Component;
+use kernel::dynamic_deferred_call::{DynamicDeferredCall, DynamicDeferredCallClientState};
 use kernel::hil::led::LedLow;
 use kernel::hil::time::Counter;
+use kernel::platform::{KernelResources, SyscallDriverLookup, SyscallFilter};
+use kernel::scheduler::round_robin::RoundRobinSched;
 #[allow(unused_imports)]
 use kernel::{capabilities, create_capability, debug, debug_gpio, debug_verbose, static_init};
 use nrf52840::gpio::Pin;
@@ -117,32 +119,41 @@ static STRINGS: &'static [&'static str] = &[
     "OpenSK",
     // Serial number
     "v1.0",
+    // Interface description + main HID string
+    "FIDO2",
+    // vendor HID string
+    "Vendor HID",
 ];
 
 // State for loading and holding applications.
 // How should the kernel respond when a process faults.
-const FAULT_RESPONSE: kernel::procs::FaultResponse = kernel::procs::FaultResponse::Panic;
+const FAULT_RESPONSE: kernel::process::PanicFaultPolicy = kernel::process::PanicFaultPolicy {};
 
 // Number of concurrent processes this platform supports.
 const NUM_PROCS: usize = 8;
 
-static mut PROCESSES: [Option<&'static dyn kernel::procs::ProcessType>; NUM_PROCS] =
+static mut PROCESSES: [Option<&'static dyn kernel::process::Process>; NUM_PROCS] =
     [None; NUM_PROCS];
 
 include!(concat!(env!("OUT_DIR"), "/locations.rs"));
 
 static mut CHIP: Option<&'static nrf52840::chip::NRF52<Nrf52840DefaultPeripherals>> = None;
+static mut PROCESS_PRINTER: Option<&'static kernel::process::ProcessPrinterText> = None;
+
+/// Flash buffer for the custom nvmc driver
+static mut APP_FLASH_BUFFER: [u8; 0x1000] = [0; 0x1000];
 
 /// Dummy buffer that causes the linker to reserve enough space for the stack.
 #[no_mangle]
 #[link_section = ".stack_buffer"]
-pub static mut STACK_MEMORY: [u8; 0x1000] = [0; 0x1000];
+pub static mut STACK_MEMORY: [u8; 0x2000] = [0; 0x2000];
 
 /// Supported drivers by the platform
 pub struct Platform {
     button: &'static capsules::button::Button<'static, nrf52840::gpio::GPIOPin<'static>>,
     pconsole: &'static capsules::process_console::ProcessConsole<
         'static,
+        VirtualMuxAlarm<'static, nrf52840::rtc::Rtc<'static>>,
         components::process_console::Capability,
     >,
     console: &'static capsules::console::Console<'static>,
@@ -150,9 +161,10 @@ pub struct Platform {
     led: &'static capsules::led::LedDriver<
         'static,
         kernel::hil::led::LedLow<'static, nrf52840::gpio::GPIOPin<'static>>,
+        4,
     >,
     rng: &'static capsules::rng::RngDriver<'static>,
-    ipc: kernel::ipc::IPC<NUM_PROCS>,
+    ipc: kernel::ipc::IPC<{ NUM_PROCS as u8 }>,
     analog_comparator: &'static capsules::analog_comparator::AnalogComparator<
         'static,
         nrf52840::acomp::Comparator<'static>,
@@ -167,13 +179,14 @@ pub struct Platform {
         'static,
         nrf52840::usbd::Usbd<'static>,
     >,
-    crp: &'static capsules::firmware_protection::FirmwareProtection<nrf52840::uicr::Uicr>,
+    scheduler: &'static RoundRobinSched<'static>,
+    systick: cortexm4::systick::SysTick,
 }
 
-impl kernel::Platform for Platform {
+impl SyscallDriverLookup for Platform {
     fn with_driver<F, R>(&self, driver_num: usize, f: F) -> R
     where
-        F: FnOnce(Option<&dyn kernel::Driver>) -> R,
+        F: FnOnce(Option<&dyn kernel::syscall::SyscallDriver>) -> R,
     {
         match driver_num {
             capsules::console::DRIVER_NUM => f(Some(self.console)),
@@ -185,44 +198,89 @@ impl kernel::Platform for Platform {
             capsules::analog_comparator::DRIVER_NUM => f(Some(self.analog_comparator)),
             nrf52840::nvmc::DRIVER_NUM => f(Some(self.nvmc)),
             capsules::usb::usb_ctap::DRIVER_NUM => f(Some(self.usb)),
-            capsules::firmware_protection::DRIVER_NUM => f(Some(self.crp)),
             kernel::ipc::DRIVER_NUM => f(Some(&self.ipc)),
             _ => f(None),
         }
     }
+}
 
+impl SyscallFilter for Platform {
     fn filter_syscall(
         &self,
-        process: &dyn kernel::procs::ProcessType,
+        process: &dyn kernel::process::Process,
         syscall: &kernel::syscall::Syscall,
-    ) -> Result<(), kernel::ReturnCode> {
+    ) -> Result<(), kernel::errorcode::ErrorCode> {
         use kernel::syscall::Syscall;
         match *syscall {
-            Syscall::COMMAND {
+            Syscall::Command {
                 driver_number: nrf52840::nvmc::DRIVER_NUM,
                 subdriver_number: cmd,
                 arg0: ptr,
                 arg1: len,
             } if (cmd == 2 || cmd == 3) && !process.fits_in_storage_location(ptr, len) => {
-                Err(kernel::ReturnCode::EINVAL)
+                Err(kernel::ErrorCode::INVAL)
             }
             _ => Ok(()),
         }
     }
 }
 
-/// Entry point in the vector table called on hard reset.
-#[no_mangle]
-pub unsafe fn reset_handler() {
-    // Loads relocations and clears BSS
-    nrf52840::init();
-    let ppi = static_init!(nrf52840::ppi::Ppi, nrf52840::ppi::Ppi::new());
+/// This is in a separate, inline(never) function so that its stack frame is
+/// removed when this function returns. Otherwise, the stack space used for
+/// these static_inits is wasted.
+#[inline(never)]
+unsafe fn get_peripherals() -> &'static mut Nrf52840DefaultPeripherals<'static> {
     // Initialize chip peripheral drivers
     let nrf52840_peripherals = static_init!(
         Nrf52840DefaultPeripherals,
-        Nrf52840DefaultPeripherals::new(ppi)
+        Nrf52840DefaultPeripherals::new()
     );
 
+    nrf52840_peripherals
+}
+
+impl KernelResources<nrf52840::chip::NRF52<'static, Nrf52840DefaultPeripherals<'static>>>
+    for Platform
+{
+    type SyscallDriverLookup = Self;
+    type SyscallFilter = Self;
+    type ProcessFault = ();
+    type Scheduler = RoundRobinSched<'static>;
+    type SchedulerTimer = cortexm4::systick::SysTick;
+    type WatchDog = ();
+    type ContextSwitchCallback = ();
+
+    fn syscall_driver_lookup(&self) -> &Self::SyscallDriverLookup {
+        &self
+    }
+    fn syscall_filter(&self) -> &Self::SyscallFilter {
+        &self
+    }
+    fn process_fault(&self) -> &Self::ProcessFault {
+        &()
+    }
+    fn scheduler(&self) -> &Self::Scheduler {
+        self.scheduler
+    }
+    fn scheduler_timer(&self) -> &Self::SchedulerTimer {
+        &self.systick
+    }
+    fn watchdog(&self) -> &Self::WatchDog {
+        &()
+    }
+    fn context_switch_callback(&self) -> &Self::ContextSwitchCallback {
+        &()
+    }
+}
+
+/// Main function called after RAM initialized.
+#[no_mangle]
+pub unsafe fn main() {
+    // Loads relocations and clears BSS
+    nrf52840::init();
+    // Initialize chip peripheral drivers
+    let nrf52840_peripherals = get_peripherals();
+
     // set up circular peripheral dependencies
     nrf52840_peripherals.init();
     let base_peripherals = &nrf52840_peripherals.nrf52;
@@ -249,6 +307,7 @@ pub unsafe fn reset_handler() {
 
     let gpio = components::gpio::GpioComponent::new(
         board_kernel,
+        capsules::gpio::DRIVER_NUM,
         components::gpio_component_helper!(
             nrf52840::gpio::GPIOPin,
             0 => &nrf52840_peripherals.gpio_port[Pin::P1_01],
@@ -273,6 +332,7 @@ pub unsafe fn reset_handler() {
 
     let button = components::button::ButtonComponent::new(
         board_kernel,
+        capsules::button::DRIVER_NUM,
         components::button_component_helper!(
             nrf52840::gpio::GPIOPin,
             (
@@ -299,15 +359,12 @@ pub unsafe fn reset_handler() {
     )
     .finalize(components::button_component_buf!(nrf52840::gpio::GPIOPin));
 
-    let led = components::led::LedsComponent::new(components::led_component_helper!(
+    let led = components::led::LedsComponent::new().finalize(components::led_component_helper!(
         LedLow<'static, nrf52840::gpio::GPIOPin>,
         LedLow::new(&nrf52840_peripherals.gpio_port[LED1_PIN]),
         LedLow::new(&nrf52840_peripherals.gpio_port[LED2_PIN]),
         LedLow::new(&nrf52840_peripherals.gpio_port[LED3_PIN]),
         LedLow::new(&nrf52840_peripherals.gpio_port[LED4_PIN]),
-    ))
-    .finalize(components::led_component_buf!(
-        LedLow<'static, nrf52840::gpio::GPIOPin>
     ));
 
     let chip = static_init!(
@@ -339,10 +396,14 @@ pub unsafe fn reset_handler() {
     );
 
     let rtc = &base_peripherals.rtc;
-    rtc.start();
+    let _ = rtc.start();
     let mux_alarm = components::alarm::AlarmMuxComponent::new(rtc)
         .finalize(components::alarm_mux_component_helper!(nrf52840::rtc::Rtc));
-    let alarm = components::alarm::AlarmDriverComponent::new(board_kernel, mux_alarm)
+    let alarm = components::alarm::AlarmDriverComponent::new(
+        board_kernel,
+        capsules::alarm::DRIVER_NUM,
+        mux_alarm,
+    )
     .finalize(components::alarm_component_helper!(nrf52840::rtc::Rtc));
 
     let channel = nrf52_components::UartChannelComponent::new(
@@ -359,22 +420,41 @@ pub unsafe fn reset_handler() {
         DynamicDeferredCall::new(dynamic_deferred_call_clients)
     );
     DynamicDeferredCall::set_global_instance(dynamic_deferred_caller);
+    let process_printer =
+        components::process_printer::ProcessPrinterTextComponent::new().finalize(());
+    PROCESS_PRINTER = Some(process_printer);
 
     // Create a shared UART channel for the console and for kernel debug.
     let uart_mux =
         components::console::UartMuxComponent::new(channel, 115200, dynamic_deferred_caller)
             .finalize(());
 
-    let pconsole =
-        components::process_console::ProcessConsoleComponent::new(board_kernel, uart_mux)
-            .finalize(());
+    let pconsole = components::process_console::ProcessConsoleComponent::new(
+        board_kernel,
+        uart_mux,
+        mux_alarm,
+        process_printer,
+    )
+    .finalize(components::process_console_component_helper!(
+        nrf52840::rtc::Rtc<'static>
+    ));
 
     // Setup the console.
-    let console = components::console::ConsoleComponent::new(board_kernel, uart_mux).finalize(());
+    let console = components::console::ConsoleComponent::new(
+        board_kernel,
+        capsules::console::DRIVER_NUM,
+        uart_mux,
+    )
+    .finalize(components::console_component_helper!());
     // Create the debugger object that handles calls to `debug!()`.
     components::debug_writer::DebugWriterComponent::new(uart_mux).finalize(());
 
-    let rng = components::rng::RngComponent::new(board_kernel, &base_peripherals.trng).finalize(());
+    let rng = components::rng::RngComponent::new(
+        board_kernel,
+        capsules::rng::DRIVER_NUM,
+        &base_peripherals.trng,
+    )
+    .finalize(());
 
     base_peripherals.spim0.configure(
         nrf52840::pinmux::Pinmux::new(SPI_MOSI as u32),
@@ -390,6 +470,8 @@ pub unsafe fn reset_handler() {
             nrf52840::acomp::Channel,
             &nrf52840::acomp::CHANNEL_AC0
         ),
+        board_kernel,
+        capsules::analog_comparator::DRIVER_NUM,
     )
     .finalize(components::acomp_component_buf!(
         nrf52840::acomp::Comparator
@@ -399,8 +481,9 @@ pub unsafe fn reset_handler() {
         nrf52840::nvmc::SyscallDriver,
         nrf52840::nvmc::SyscallDriver::new(
             &base_peripherals.nvmc,
-            board_kernel.create_grant(&memory_allocation_capability),
+            board_kernel.create_grant(nrf52840::nvmc::DRIVER_NUM, &memory_allocation_capability),
             dynamic_deferred_caller,
+            &mut APP_FLASH_BUFFER,
         )
     );
     nvmc.set_deferred_handle(
@@ -412,21 +495,17 @@ pub unsafe fn reset_handler() {
     // Configure USB controller
     let usb = components::usb_ctap::UsbCtapComponent::new(
         board_kernel,
+        capsules::usb::usb_ctap::DRIVER_NUM,
         &nrf52840_peripherals.usbd,
         capsules::usb::usbc_client::MAX_CTRL_PACKET_SIZE_NRF52840,
         VENDOR_ID,
         PRODUCT_ID,
         STRINGS,
     )
-    .finalize(components::usb_ctap_component_buf!(nrf52840::usbd::Usbd));
+    .finalize(components::usb_ctap_component_helper!(nrf52840::usbd::Usbd));
 
-    let crp = components::firmware_protection::FirmwareProtectionComponent::new(
-        board_kernel,
-        nrf52840::uicr::Uicr::new(),
-    )
-    .finalize(components::firmware_protection_component_helper!(
-        nrf52840::uicr::Uicr
-    ));
+    let scheduler = components::sched::round_robin::RoundRobinComponent::new(&PROCESSES)
+        .finalize(components::rr_component_helper!(NUM_PROCS));
 
     nrf52_components::NrfClockComponent::new(&base_peripherals.clock).finalize(());
 
@@ -441,15 +520,20 @@ pub unsafe fn reset_handler() {
         analog_comparator,
         nvmc,
         usb,
-        crp,
-        ipc: kernel::ipc::IPC::new(board_kernel, &memory_allocation_capability),
+        ipc: kernel::ipc::IPC::new(
+            board_kernel,
+            kernel::ipc::DRIVER_NUM,
+            &memory_allocation_capability,
+        ),
+        scheduler,
+        systick: cortexm4::systick::SysTick::new_with_calibration(64000000),
     };
 
-    platform.pconsole.start();
+    let _ = platform.pconsole.start();
     debug!("Initialization complete. Entering main loop\r");
     debug!("{}", &nrf52840::ficr::FICR_INSTANCE);
 
-    /// These symbols are defined in the linker script.
+    // These symbols are defined in the linker script.
     extern "C" {
         /// Beginning of the ROM region containing app images.
         static _sapps: u8;
@@ -461,7 +545,7 @@ pub unsafe fn reset_handler() {
         static _eappmem: u8;
     }
 
-    kernel::procs::load_processes(
+    kernel::process::load_processes(
         board_kernel,
         chip,
         core::slice::from_raw_parts(
@@ -473,7 +557,7 @@ pub unsafe fn reset_handler() {
             &_eappmem as *const u8 as usize - &_sappmem as *const u8 as usize,
         ),
         &mut PROCESSES,
-        FAULT_RESPONSE,
+        &FAULT_RESPONSE,
         &process_management_capability,
     )
     .unwrap_or_else(|err| {
@@ -481,13 +565,5 @@ pub unsafe fn reset_handler() {
         debug!("{:?}", err);
     });
 
-    let scheduler = components::sched::round_robin::RoundRobinComponent::new(&PROCESSES)
-        .finalize(components::rr_component_helper!(NUM_PROCS));
-    board_kernel.kernel_loop(
-        &platform,
-        chip,
-        Some(&platform.ipc),
-        scheduler,
-        &main_loop_capability,
-    );
+    board_kernel.kernel_loop(&platform, chip, Some(&platform.ipc), &main_loop_capability);
 }

bootloader/Cargo.lock

@@ -19,7 +19,7 @@ checksum = "45403b49e3954a4b8428a0ac21a4b7afadccf92bfd96273f1a58cd4812496ae0"
 dependencies = [
  "generic-array 0.12.4",
  "generic-array 0.13.3",
- "generic-array 0.14.6",
+ "generic-array 0.14.7",
  "stable_deref_trait",
 ]
 
@@ -53,9 +53,9 @@ dependencies = [
 
 [[package]]
 name = "byteorder"
-version = "1.4.3"
+version = "1.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "14c189c53d098945499cdfa7ecc63567cf3886b3332b312a5b4585d8d3a6a610"
+checksum = "1fd0f2584146f6f2ef48085050886acf353beff7305ebd1ae69500e27c67f64b"
 
 [[package]]
 name = "cortex-m"
@@ -66,15 +66,15 @@ dependencies = [
  "aligned",
  "bare-metal",
  "bitfield",
- "cortex-m 0.7.6",
+ "cortex-m 0.7.7",
  "volatile-register",
 ]
 
 [[package]]
 name = "cortex-m"
-version = "0.7.6"
+version = "0.7.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "70858629a458fdfd39f9675c4dc309411f2a3f83bede76988d81bf1a0ecee9e0"
+checksum = "8ec610d8f49840a5b376c69663b6369e71f4b34484b9b2eb29fb918d92516cb9"
 dependencies = [
  "bare-metal",
  "bitfield",
@@ -84,9 +84,9 @@ dependencies = [
 
 [[package]]
 name = "cortex-m-rt"
-version = "0.7.1"
+version = "0.7.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3c433da385b720d5bb9f52362fa2782420798e68d40d67bfe4b0d992aba5dfe7"
+checksum = "ee84e813d593101b1723e13ec38b6ab6abbdbaaa4546553f5395ed274079ddb1"
 dependencies = [
  "cortex-m-rt-macros",
 ]
@@ -132,9 +132,9 @@ dependencies = [
 
 [[package]]
 name = "generic-array"
-version = "0.14.6"
+version = "0.14.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bff49e947297f3312447abdca79f45f4738097cc82b06e72054d2223f601f1b9"
+checksum = "85649ca51fd72272d7821adaf274ad91c288277713d9c18820d8499a7ff69e9a"
 dependencies = [
  "typenum",
  "version_check",
@@ -146,14 +146,14 @@ version = "0.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "801d31da0513b6ec5214e9bf433a77966320625a37860f910be265be6e18d06f"
 dependencies = [
- "nb 1.0.0",
+ "nb 1.1.0",
 ]
 
 [[package]]
 name = "nb"
-version = "1.0.0"
+version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "546c37ac5d9e56f55e73b677106873d9d9f5190605e41a856503623648488cae"
+checksum = "8d5439c4ad607c3c23abf66de8c8bf57ba8adcd1f129e699851a6e43935d339d"
 
 [[package]]
 name = "panic-abort"
@@ -163,18 +163,18 @@ checksum = "4e20e6499bbbc412f280b04a42346b356c6fa0753d5fd22b7bd752ff34c778ee"
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.43"
+version = "1.0.69"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0a2ca2c61bc9f3d74d2886294ab7b9853abd9c1ad903a3ac7815c58989bb7bab"
+checksum = "134c189feb4956b20f6f547d2cf727d4c0fe06722b20a0eec87ed445a97f92da"
 dependencies = [
  "unicode-ident",
 ]
 
 [[package]]
 name = "quote"
-version = "1.0.21"
+version = "1.0.33"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bbe448f377a7d6961e30f5955f9b8d106c3f5e449d493ee1b125c1d43c2b5179"
+checksum = "5267fca4496028628a95160fc423a33e8b2e6af8a5302579e322e4b520293cae"
 dependencies = [
  "proc-macro2",
 ]
@@ -185,7 +185,7 @@ version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "065d6058bb1204f51a562a67209e1817cf714759d5cf845aa45c75fa7b0b9d9b"
 dependencies = [
- "cortex-m 0.7.6",
+ "cortex-m 0.7.7",
  "ufmt-write",
 ]
 
@@ -221,9 +221,9 @@ checksum = "a8f112729512f8e442d81f95a8a7ddf2b7c6b8a1a6f509a95864142b30cab2d3"
 
 [[package]]
 name = "syn"
-version = "1.0.100"
+version = "1.0.109"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "52205623b1b0f064a4e71182c3b18ae902267282930c6d5462c91b859668426e"
+checksum = "72b64191b275b66ffe2469e8af2c1cfe3bafa67b529ead792a6d0160888b4237"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -232,15 +232,15 @@ dependencies = [
 
 [[package]]
 name = "tock-registers"
-version = "0.6.0"
+version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f521a79accce68c417c9c77ce22108056b626126da1932f7e2e9b5bbffee0cea"
+checksum = "4ee8fba06c1f4d0b396ef61a54530bb6b28f0dc61c38bc8bc5a5a48161e6282e"
 
 [[package]]
 name = "typenum"
-version = "1.15.0"
+version = "1.17.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dcf81ac59edc17cc8697ff311e8f5ef2d99fcbd9817b34cec66f90b6c3dfd987"
+checksum = "42ff0bf0c66b8238c6f3b578df37d0b7848e55df8577b3f74f92a69acceeb825"
 
 [[package]]
 name = "ufmt-write"
@@ -250,9 +250,9 @@ checksum = "e87a2ed6b42ec5e28cc3b94c09982969e9227600b2e3dcbc1db927a84c06bd69"
 
 [[package]]
 name = "unicode-ident"
-version = "1.0.4"
+version = "1.0.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dcc811dc4066ac62f84f11307873c4850cb653bfa9b1719cee2bd2204a4bc5dd"
+checksum = "3354b9ac3fae1ff6755cb6db53683adb661634f67557942dea4facebec0fee4b"
 
 [[package]]
 name = "vcell"
@@ -274,9 +274,9 @@ checksum = "6a02e4885ed3bc0f2de90ea6dd45ebcbb66dacffe03547fadbb0eeae2770887d"
 
 [[package]]
 name = "volatile-register"
-version = "0.2.1"
+version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9ee8f19f9d74293faf70901bc20ad067dc1ad390d2cbf1e3f75f721ffee908b6"
+checksum = "de437e2a6208b014ab52972a27e59b33fa2920d3e00fe05026167a1c509d19cc"
 dependencies = [
  "vcell",
 ]

bootloader/Cargo.toml

@@ -15,7 +15,7 @@ cortex-m-rt = "*"
 cortex-m-rt-macros = "*"
 panic-abort = "0.3.2"
 rtt-target = { version = "*", features = ["cortex-m"] }
-tock-registers = { version = "0.6.0", features = ["no_std_unit_tests"] }
+tock-registers = "0.7.0"
 
 [profile.dev]
 panic = "abort"

bootloader/rust-toolchain

@@ -1,4 +0,0 @@
-[toolchain]
-channel = "nightly-2021-03-25"
-components = ["clippy", "rustfmt"]
-targets = ["thumbv7em-none-eabi"]

bootloader/src/crypto_cell.rs

@@ -26,6 +26,7 @@ use super::static_ref::StaticRef;
 use core::cell::Cell;
 #[cfg(debug_assertions)]
 use rtt_target::rprintln;
+use tock_registers::interfaces::{Readable, Writeable};
 
 const SHA256_INIT_VALUE: [u32; 8] = [
     0x6A09E667, 0xBB67AE85, 0x3C6EF372, 0xA54FF53A, 0x510E527F, 0x9B05688C, 0x1F83D9AB, 0x5BE0CD19,

bootloader/src/static_ref.rs

@@ -40,7 +40,7 @@ impl<T> Copy for StaticRef<T> {}
 
 impl<T> Deref for StaticRef<T> {
     type Target = T;
-    fn deref(&self) -> &'static T {
+    fn deref(&self) -> &T {
         unsafe { &*self.ptr }
     }
 }

build.rs

@@ -24,7 +24,7 @@ use uuid::Uuid;
 fn main() {
     const UPGRADE_FILE: &str = "crypto_data/opensk_upgrade_pub.pem";
     println!("cargo:rerun-if-changed=crypto_data/aaguid.txt");
-    println!("cargo:rerun-if-changed={}", UPGRADE_FILE);
+    println!("cargo:rerun-if-changed={UPGRADE_FILE}");
     println!("cargo:rerun-if-changed=layout.ld");
     println!("cargo:rerun-if-changed=nrf52840_layout.ld");
     println!("cargo:rerun-if-changed=nrf52840_layout_a.ld");
@@ -33,7 +33,7 @@ fn main() {
     let out_dir = env::var_os("OUT_DIR").unwrap();
     let aaguid_bin_path = Path::new(&out_dir).join("opensk_aaguid.bin");
 
-    let mut aaguid_bin_file = File::create(&aaguid_bin_path).unwrap();
+    let mut aaguid_bin_file = File::create(aaguid_bin_path).unwrap();
     let mut aaguid_txt_file = File::open("crypto_data/aaguid.txt").unwrap();
     let mut content = String::new();
     aaguid_txt_file.read_to_string(&mut content).unwrap();
@@ -52,6 +52,6 @@ fn main() {
         .to_bytes(&group, conversion_form, &mut ctx)
         .unwrap();
     let upgrade_pubkey_path = Path::new(&out_dir).join("opensk_upgrade_pubkey.bin");
-    let mut upgrade_pub_bin_file = File::create(&upgrade_pubkey_path).unwrap();
+    let mut upgrade_pub_bin_file = File::create(upgrade_pubkey_path).unwrap();
     upgrade_pub_bin_file.write_all(&raw_bytes).unwrap();
 }

deploy.py

@@ -1,5 +1,5 @@
-#!/usr/bin/env python3
-# Copyright 2019 Google LLC
+#!py_virtual_env/bin/python3
+# Copyright 2019-2023 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -23,6 +23,7 @@ import argparse
 import collections
 import copy
 import os
+from serial.tools import list_ports
 import shutil
 import subprocess
 import sys
@@ -156,7 +157,11 @@ SUPPORTED_BOARDS = {
         ),
 }
 
-APP_HEAP_SIZE = 32768
+# The following value must match the one used in the file
+# `src/entry_point.rs`
+APP_HEAP_SIZE = 90_000
+
+CARGO_TARGET_DIR = os.environ.get("CARGO_TARGET_DIR", "target")
 
 
 def get_supported_boards() -> Tuple[str]:
@@ -198,6 +203,12 @@ def assert_python_library(module: str):
            f"Try to run: pip3 install {module}"))
 
 
+def list_serials(vid: int, pid: int) -> List[str]:
+  ports = list_ports.comports()
+  ports = filter(lambda p: p.vid == vid and p.pid == pid, ports)
+  return list(map(lambda p: p.serial_number, ports))
+
+
 class RemoveConstAction(argparse.Action):
 
   # pylint: disable=redefined-builtin
@@ -252,7 +263,7 @@ class OpenSKInstaller:
   def __init__(self, args):
     self.args = args
     # Where all the TAB files should go
-    self.tab_folder = os.path.join("target", "tab")
+    self.tab_folder = os.path.join(CARGO_TARGET_DIR, "tab")
     board = SUPPORTED_BOARDS[self.args.board]
     self.tockloader_default_args = argparse.Namespace(
         app_address=board.app_address,
@@ -318,46 +329,6 @@ class OpenSKInstaller:
       # Unreachable because fatal() will exit
     return cmd_output.decode()
 
-  def update_rustc_if_needed(self):
-    """Updates the Rust and installs the necessary target toolchain."""
-    target_toolchain_fullstring = "stable"
-    with open("rust-toolchain", "r", encoding="utf-8") as f:
-      content = f.readlines()
-      if len(content) == 1:
-        # Old format, only the build is stored
-        target_toolchain_fullstring = content[0].strip()
-      else:
-        # New format
-        for line in content:
-          if line.startswith("channel"):
-            channel = line.strip().split("=", maxsplit=1)[1].strip()
-            target_toolchain_fullstring = channel.strip('"')
-    target_toolchain = target_toolchain_fullstring.split("-", maxsplit=1)
-    if len(target_toolchain) == 1:
-      # If we target the stable version of rust, we won't have a date
-      # associated to the version and split will only return 1 item.
-      # To avoid failing later when accessing the date, we insert an
-      # empty value.
-      target_toolchain.append("")
-    current_version = self.checked_command_output(["rustc", "--version"])
-    if not (target_toolchain[0] in current_version and
-            target_toolchain[1] in current_version):
-      info(f"Updating rust toolchain to {'-'.join(target_toolchain)}")
-      # Need to update
-      rustup_install = ["rustup"]
-      if self.args.verbose_build:
-        rustup_install.append("--verbose")
-      rustup_install.extend(["install", target_toolchain_fullstring])
-      self.checked_command(rustup_install)
-
-    rustup_target = ["rustup"]
-    if self.args.verbose_build:
-      rustup_target.append("--verbose")
-    rustup_target.extend(
-        ["target", "add", SUPPORTED_BOARDS[self.args.board].arch])
-    self.checked_command(rustup_target)
-    info("Rust toolchain up-to-date")
-
   def build_tockos(self):
     """Buids Tock OS with the parameters specified in args."""
     info(f"Building Tock OS for board {self.args.board}")
@@ -399,7 +370,8 @@ class OpenSKInstaller:
     env["RUSTFLAGS"] = " ".join(rust_flags)
     cargo_command = ["cargo", "build", "--release", f"--target={props.arch}"]
     self.checked_command(cargo_command, cwd="bootloader", env=env)
-    binary_path = os.path.join("target", props.arch, "release", "bootloader")
+    binary_path = os.path.join(CARGO_TARGET_DIR, props.arch, "release",
+                               "bootloader")
     objcopy_command = [
         "llvm-objcopy", "-O", "binary", binary_path, f"{binary_path}.bin"
     ]
@@ -461,7 +433,7 @@ class OpenSKInstaller:
     if self.args.verbose_build:
       command.append("--verbose")
     self.checked_command(command, env=env)
-    app_path = os.path.join("target", props.arch, "release")
+    app_path = os.path.join(CARGO_TARGET_DIR, props.arch, "release")
     if is_example:
       app_path = os.path.join(app_path, "examples")
     app_path = os.path.join(app_path, self.args.application)
@@ -497,14 +469,16 @@ class OpenSKInstaller:
     elf2tab_ver = self.checked_command_output(
         ["elf2tab/bin/elf2tab", "--version"]).split(
             "\n", maxsplit=1)[0]
-    if elf2tab_ver != "elf2tab 0.7.0":
-      error(("Detected unsupported elf2tab version {elf2tab_ver!a}. The "
-             "following commands may fail. Please use 0.7.0 instead."))
+    if elf2tab_ver != "elf2tab 0.10.2":
+      error(("Detected unsupported elf2tab version {elf2tab_ver!a}! The "
+             "following commands may fail. Please use 0.10.2 instead."))
     os.makedirs(self.tab_folder, exist_ok=True)
     tab_filename = os.path.join(self.tab_folder, f"{self.args.application}.tab")
+    supported_kernel = (2, 1)
     elf2tab_args = [
         "elf2tab/bin/elf2tab", "--deterministic", "--package-name",
-        self.args.application, "-o", tab_filename
+        self.args.application, f"--kernel-major={supported_kernel[0]}",
+        f"--kernel-minor={supported_kernel[1]}", "-o", tab_filename
     ]
     if self.args.verbose_build:
       elf2tab_args.append("--verbose")
@@ -522,10 +496,11 @@ class OpenSKInstaller:
           stack_sizes.add(required_stack_size)
     if len(stack_sizes) != 1:
       error("Detected different stack sizes across tab files.")
-
+    # `protected-region-size` must match the `TBF_HEADER_SIZE`
+    # (currently 0x60 = 96 bytes)
     elf2tab_args.extend([
         f"--stack={stack_sizes.pop()}", f"--app-heap={APP_HEAP_SIZE}",
-        "--kernel-heap=1024", "--protected-region-size=64"
+        "--kernel-heap=1024", "--protected-region-size=96"
     ])
     if self.args.elf2tab_output:
       output = self.checked_command_output(elf2tab_args)
@@ -606,7 +581,7 @@ class OpenSKInstaller:
       return
 
     kernel = self.read_kernel()
-    app_tab_path = "target/tab/ctap2.tab"
+    app_tab_path = f"{CARGO_TARGET_DIR}/tab/ctap2.tab"
     if not os.path.exists(app_tab_path):
       fatal(f"File not found: {app_tab_path}")
     app_tab = tab.TAB(app_tab_path)
@@ -700,17 +675,18 @@ class OpenSKInstaller:
         final_hex.merge(padding_hex, overlap="error")
 
       # Now we can add the application from the TAB file
-      app_tab_path = f"target/tab/{self.args.application}.tab"
+      app_tab_path = f"{CARGO_TARGET_DIR}/tab/{self.args.application}.tab"
       assert os.path.exists(app_tab_path)
       app_tab = tab.TAB(app_tab_path)
       if board_props.arch not in app_tab.get_supported_architectures():
         fatal(("It seems that the TAB file was not produced for the "
                "architecture {board_props.arch}"))
       app_hex = intelhex.IntelHex()
-      app_hex.frombytes(
-          app_tab.extract_app(board_props.arch).get_binary(
-              board_props.app_address),
-          offset=board_props.app_address)
+      tab_bytes = app_tab.extract_app(board_props.arch).get_binary(
+          board_props.app_address)
+      if tab_bytes is None:
+        fatal("The extracted bytes from the TAB file are none")
+      app_hex.frombytes(tab_bytes, offset=board_props.app_address)
       final_hex.merge(app_hex)
     info(f"Generating all-merged HEX file: {dest_file}")
     final_hex.tofile(dest_file, format="hex")
@@ -734,13 +710,14 @@ class OpenSKInstaller:
         fatal("This board doesn't seem to support flashing through pyocd.")
 
     if self.args.programmer == "nordicdfu":
-      assert_mandatory_binary("nrfutil")
       assert_python_library("intelhex")
-      assert_python_library("nordicsemi.lister")
-      nrfutil_version = __import__("nordicsemi.version").version.NRFUTIL_VERSION
+      assert_mandatory_binary("nrfutil")
+      nrfutil_version = self.checked_command_output(["nrfutil", "version"])
+      nrfutil_version = nrfutil_version.removeprefix("nrfutil version ")
       if not nrfutil_version.startswith("6."):
         fatal(("You need to install nrfutil python3 package v6.0 or above. "
-               "Found: {nrfutil_version}"))
+               f"Found: v{nrfutil_version}. If you use Python >= 3.11, please "
+               "try version 3.10."))
       if not SUPPORTED_BOARDS[self.args.board].nordic_dfu:
         fatal("This board doesn't support flashing over DFU.")
 
@@ -764,7 +741,6 @@ class OpenSKInstaller:
   def run(self) -> int:
     """Reads args to decide and run all required tasks."""
     self.check_prerequisites()
-    self.update_rustc_if_needed()
 
     if not (self.args.tockos or self.args.application or
             self.args.clear_storage or self.args.configure):
@@ -789,6 +765,7 @@ class OpenSKInstaller:
       info("No application selected.")
     else:
       self.build_example()
+      self.args.configure = False
 
     # Erase persistent storage
     if self.args.clear_storage:
@@ -808,7 +785,8 @@ class OpenSKInstaller:
       # Install padding and application if needed
       if self.args.application:
         self.install_padding()
-        self.install_tab_file(f"target/tab/{self.args.application}.tab")
+        self.install_tab_file(
+            f"{CARGO_TARGET_DIR}/tab/{self.args.application}.tab")
         self.install_metadata()
         if not self.verify_flashed_app(self.args.application):
           error(("It seems that something went wrong. App/example not found "
@@ -817,8 +795,8 @@ class OpenSKInstaller:
           return 1
 
     elif self.args.programmer in ("pyocd", "nordicdfu", "none"):
-      dest_file = f"target/{self.args.board}_merged.hex"
-      os.makedirs("target", exist_ok=True)
+      dest_file = f"{CARGO_TARGET_DIR}/{self.args.board}_merged.hex"
+      os.makedirs(CARGO_TARGET_DIR, exist_ok=True)
       self.create_hex_file(dest_file)
 
       if self.args.programmer == "pyocd":
@@ -829,7 +807,7 @@ class OpenSKInstaller:
         ])
       if self.args.programmer == "nordicdfu":
         info("Creating DFU package")
-        dfu_pkg_file = f"target/{self.args.board}_dfu.zip"
+        dfu_pkg_file = f"{CARGO_TARGET_DIR}/{self.args.board}_dfu.zip"
         self.checked_command([
             "nrfutil", "pkg", "generate", "--hw-version=52", "--sd-req=0",
             "--application-version=1", f"--application={dest_file}",
@@ -841,22 +819,17 @@ class OpenSKInstaller:
         info("Press [ENTER] when ready.")
         _ = input()
         # Search for the DFU devices
-        serial_number = []
-        # pylint: disable=g-import-not-at-top,import-outside-toplevel
-        from nordicsemi.lister import device_lister
-        for device in device_lister.DeviceLister().enumerate():
-          if device.vendor_id == "1915" and device.product_id == "521F":
-            serial_number.append(device.serial_number)
-        if not serial_number:
+        serial_numbers = list_serials(0x1915, 0x521F)
+        if not serial_numbers:
           fatal("Couldn't find any DFU device on your system.")
-        if len(serial_number) > 1:
+        if len(serial_numbers) > 1:
           fatal("Multiple DFU devices are detected. Please only connect one.")
         # Run the command without capturing stdout so that we show progress
         info("Flashing device using DFU...")
         dfu_return_code = subprocess.run(
             [
                 "nrfutil", "dfu", "usb-serial", f"--package={dfu_pkg_file}",
-                f"--serial-number={serial_number[0]}"
+                f"--serial-number={serial_numbers[0]}"
             ],
             check=False,
             timeout=None,
@@ -881,6 +854,18 @@ class OpenSKInstaller:
       self.configure()
     return 0
 
+  def print_configure_help(self):
+    vendor_hid = " --vendor-hid" if "vendor_hid" in self.args.features else ""
+    info("Your device is not yet configured, and lacks some functionality. "
+         "You can check its configuration status with:\n\n"
+         f"./tools/configure.py{vendor_hid}\n\n"
+         "If you run into issues, this command might help:\n\n"
+         f"./tools/configure.py{vendor_hid} \\\n"
+         "    --certificate=crypto_data/opensk_cert.pem \\\n"
+         "    --private-key=crypto_data/opensk.key\n\n"
+         "Please read the Certificate considerations in docs/customization.md"
+         " to understand the privacy trade-off.")
+
   def configure(self):
     info("Configuring device.")
     # Trying to check or configure the device. Booting might take some time.
@@ -892,6 +877,7 @@ class OpenSKInstaller:
         break
 
     if not devices:
+      self.print_configure_help()
       fatal("No device to configure found.")
     status = self.configure_device()
     if not status:
@@ -900,13 +886,7 @@ class OpenSKInstaller:
     if status["cert"] and status["pkey"]:
       info("You're all set!")
     else:
-      info("Your device is not yet configured, and lacks some functionality. "
-           "If you run into issues, this command might help:\n\n"
-           "./tools/configure.py \\\n"
-           "    --certificate=crypto_data/opensk_cert.pem \\\n"
-           "    --private-key=crypto_data/opensk.key\n\n"
-           "Please read the Certificate considerations in docs/customization.md"
-           " to understand the privacy trade-off.")
+      self.print_configure_help()
     return 0
 
 
@@ -975,7 +955,8 @@ if __name__ == "__main__":
       dest="lock_device",
       help=("Try to disable JTAG at the end of the operations. This "
             "operation may fail if the device is already locked or if "
-            "the certificate/private key are not programmed."),
+            "the certificate/private key are not programmed."
+            "Currently not implemented on nrf52840 and always fails."),
   )
   main_parser.add_argument(
       "--inject-certificate",
@@ -1071,6 +1052,20 @@ if __name__ == "__main__":
       help=("Compiles the OpenSK application without backward compatible "
             "support for U2F/CTAP1 protocol."),
   )
+  main_parser.add_argument(
+      "--no-config-command",
+      action=RemoveConstAction,
+      const="config_command",
+      dest="features",
+      help=("Removes the AuthenticatorConfig command."),
+  )
+  main_parser.add_argument(
+      "--rust-crypto",
+      action="append_const",
+      const="rust_crypto",
+      dest="features",
+      help=("Compiles the OpenSK application with RustCrypto implementations."),
+  )
   main_parser.add_argument(
       "--nfc",
       action="append_const",
@@ -1147,14 +1142,14 @@ if __name__ == "__main__":
       help=("Firmware version that is built."),
   )
 
-  main_parser.set_defaults(features=["with_ctap1"])
+  main_parser.set_defaults(features=["with_ctap1", "config_command"])
 
   # Start parsing to know if we're going to list things or not.
   partial_args, _ = main_parser.parse_known_args()
 
   # We only need the apps_group if we have a board set
   apps_group = main_parser.add_mutually_exclusive_group(
-      required=(partial_args.board is not None))
+      required=partial_args.board is not None)
   apps_group.add_argument(
       "--no-app",
       dest="application",
@@ -1175,12 +1170,6 @@ if __name__ == "__main__":
       const="crypto_bench",
       help=("Compiles and installs the crypto_bench example that benchmarks "
             "the performance of the cryptographic algorithms on the board."))
-  apps_group.add_argument(
-      "--measure_stack",
-      dest="application",
-      action="store_const",
-      const="measure_stack",
-      help=("Measures stack usage of Dilithium."))
   apps_group.add_argument(
       "--store_latency",
       dest="application",

docs/boards/nrf52840_dongle.md

@@ -19,6 +19,9 @@ customize it.
 
 ### Flashing using DFU (preferred method)
 
+You need `nrfutil` version 6. The [install manual](../install.md) has
+setup instructions.
+
 To flash the firmware, run:
 
 ```shell

docs/boards/nrf52840_mdk.md

@@ -19,7 +19,7 @@ After general setup, you still need these steps:
 1.  Run the script:
 
     ```shell
-    python3 uf2conv.py -c -f 0xada52840 -o target/opensk.uf2 target/nrf52840_mdk_dfu_merged.hex
+    py_virtual_env/bin/python3 uf2conv.py -c -f 0xada52840 -o target/opensk.uf2 target/nrf52840_mdk_dfu_merged.hex
     ```
 
 1.  Boot into DFU mode. Keep the user button pressed on your hardware while

docs/boards/nrf52840dk.md

@@ -62,19 +62,24 @@ firmware. You can bootstrap an upgradable board using one of the two commands:
 Afterwards, you can upgrade the other partition with
 
 ```shell
-./tools/perform_upgrade.sh nrf52840dk_opensk_b --version=1
-./tools/perform_upgrade.sh nrf52840dk_opensk_a --version=1
+# Board A -> B
+./deploy.py --board=nrf52840dk_opensk_b --opensk --programmer=none --version=1
+py_virtual_env/bin/python3 -m tools.deploy_partition --board=nrf52840dk_opensk_b --version=1
+# Board B -> A
+./deploy.py --board=nrf52840dk_opensk_a --opensk --programmer=none --version=1
+py_virtual_env/bin/python3 -m tools.deploy_partition --board=nrf52840dk_opensk_a --version=1
 ```
 
 respectively. You can only upgrade the partition that is not currently running,
-so always alternate your calls to `perform_upgrade.sh`. Otherwise, this script
-works like `deploy.py`. You can call it even after you locked down your device,
-to deploy changes to your development board.
+otherwise your deploy attempts will fail. You can call `deploy_partition` after
+you locked down your device, to deploy changes to your development board.
+Upgrades only apply after a reboot.
 
-If you deploy with `--vendor-hid`, also add this flag to `perform_upgrade.sh`,
+If you want to use Vendor HID, add the `--vendor-hid` flag to all calls,
 for example:
 
 ```shell
 ./deploy.py --board=nrf52840dk_opensk_a --opensk --version=0 --vendor-hid
-./tools/perform_upgrade.sh nrf52840dk_opensk_b --version=1 --vendor-hid
+./deploy.py --board=nrf52840dk_opensk_b --opensk --programmer=none --version=1 --vendor-hid
+py_virtual_env/bin/python3 -m tools.deploy_partition --board=nrf52840dk_opensk_b --version=1 --vendor-hid
 ```

docs/customization.md

@@ -7,18 +7,18 @@
 All the generated certificates and private keys are stored in the directory
 `crypto_data/`. The expected content after running our `setup.sh` script is:
 
-File                     | Purpose
------------------------- | --------------------------------------------------------
-`aaguid.txt`             | Text file containaing the AAGUID value
-`opensk_ca.csr`          | Certificate sign request for the Root CA
-`opensk_ca.key`          | ECC secp256r1 private key used for the Root CA
-`opensk_ca.pem`          | PEM encoded certificate of the Root CA
-`opensk_ca.srl`          | File generated by OpenSSL
-`opensk_cert.csr`        | Certificate sign request for the attestation certificate
-`opensk_cert.pem`        | PEM encoded certificate used for the authenticator
-`opensk.key`             | ECC secp256r1 private key used for the autenticator
-`opensk_upgrade.key`     | Private key for signing upgrades through CTAP
-`opensk_upgrade_pub.pem` | Public key added to the firmware for verifying upgrades
+| File                     | Purpose                                         |
+| ------------------------ | ----------------------------------------------- |
+| `aaguid.txt`             | Text file containaing the AAGUID value          |
+| `opensk_ca.csr`          | Certificate sign request for the Root CA        |
+| `opensk_ca.key`          | ECC secp256r1 private key used for the Root CA  |
+| `opensk_ca.pem`          | PEM encoded certificate of the Root CA          |
+| `opensk_ca.srl`          | File generated by OpenSSL                       |
+| `opensk_cert.csr`        | CSR for attestation certificate                 |
+| `opensk_cert.pem`        | PEM encoded certificate for the authenticator   |
+| `opensk.key`             | ECC secp256r1 private key for the autenticator  |
+| `opensk_upgrade.key`     | Private key for signing upgrades through CTAP   |
+| `opensk_upgrade_pub.pem` | Public key for verifying upgrades               |
 
 If you want to use your own attestation certificate and private key,
 replace the `opensk_cert.pem` and `opensk.key` files. The script at
@@ -85,7 +85,7 @@ OpenSK is fuzzed with the [OSS-Fuzz](https://github.com/google/oss-fuzz)
 project. You can also run fuzzing locally. First install:
 
 ```shell
-cargo +stable install cargo-fuzz --version 0.10.2
+./fuzzing_setup.sh
 ```
 
 Then choose a fuzz target from `fuzz/fuzz_targets/`, e.g.:

docs/debugging.md

@@ -107,31 +107,3 @@ alloc[256, 1] = 0x2002401c (2 ptrs, 384 bytes)
 # After this operation, 1 pointers are allocated, totalling 512 bytes.
 dealloc[64, 1] = 0x2002410c (1 ptrs, 512 bytes)
 ```
-
-A tool is provided to analyze such reports, in `tools/heapviz`. This tool
-parses the console output, identifies the lines corresponding to (de)allocation
-operations, and first computes some statistics:
-
-*   Address range used by the heap over this run of the program,
-*   Peak heap usage (how many useful bytes are allocated),
-*   Peak heap consumption (how many bytes are used by the heap, including
-    unavailable bytes between allocated blocks, due to alignment constraints and
-    memory fragmentation),
-*   Fragmentation overhead (difference between heap consumption and usage).
-
-Then, the `heapviz` tool displays an animated "movie" of the allocated bytes in
-heap memory. Each frame in this "movie" shows bytes that are currently
-allocated, that were allocated but are now freed, and that have never been
-allocated. A new frame is generated for each (de)allocation operation. This tool
-uses the `ncurses` library, that you may have to install beforehand.
-
-You can control the tool with the following parameters:
-
-*   `--logfile` (required) to provide the file which contains the console output
-    to parse,
-*   `--fps` (optional) to customize the number of frames per second in the movie
-    animation.
-
-```shell
-cargo run --manifest-path tools/heapviz/Cargo.toml -- --logfile console.log --fps 50
-```

docs/install.md

@@ -25,10 +25,10 @@ following:
 * python3 and pip (can be installed with the `python3-pip` package on Debian)
 * the OpenSSL command line tool (can be installed and configured with the
   `libssl-dev` and `pkg-config` packages on Debian)
-*   `nrfutil` (can be installed using `pip3 install nrfutil`) if you want to flash
-    a device with DFU
+* `nrfutil` (pip package of the same name), if you want to flash
+  a device with DFU. Read the disclaimer below.
 * `uuid-runtime` if you are missing the `uuidgen` command.
-*   `llvm` if you want to use the upgradability feature.
+* `llvm` and `gcc-arm-none-eabi` if you want to use the upgradability feature.
 
 The proprietary software to use the default programmer can be found on the
 [Segger website](https://www.segger.com/downloads/jlink). Please follow their
@@ -37,11 +37,17 @@ instructions to appropriate binaries for your system.
 The scripts provided in this project have been tested under Linux and OS X. We
 haven't tested them on Windows and other platforms.
 
+You need `nrfutil` version 6, if you want to flash over DFU.
+The tool doesn't support Python newer than 3.10. Therefore, we don't officially
+support DFU for other versions. If you want to try regardless,
+[Nordic's new tool](https://www.nordicsemi.com/Products/Development-tools/nrf-util)
+might work for you.
+
 ### Compiling the firmware
 
 If this is your first time installing OpenSK, please skip directly to
-[Initial setup](#Initial-setup). Else, see
-[Updating your setup](#Updating-your-setup) below.
+[Initial setup](#initial-setup). Else, see
+[Updating your setup](#updating-your-setup) below.
 
 #### Updating your setup
 
@@ -56,11 +62,11 @@ following steps:
   ./setup.sh
   ```
 
-*   Flash your board according to the
-    [flashing instructions below](#Flashing-a-firmware]. If you come from an
-    OpenSK version before the 2.0 certified one, your credential storage is not
-    backwards compatible and you have to reset it. :warning: You will lose
-    logins to all websites that you registered with OpenSK. To erase your
+* Flash your board according to the [instructions below](#flashing-a-firmware).
+
+If you come from an OpenSK version before the 2.0 certified one, your credential
+storage is not backwards compatible and you have to reset it. :warning: You will
+lose logins to all websites that you registered with OpenSK. To erase your
 persistent storage, run the deploy script twice: Once with the application
 parameter `--erase_storage`, and once with `--opensk` as usual.
 
@@ -134,7 +140,7 @@ From here on, please follow the instructions for your hardware:
 ### Advanced installation
 
 We recommend that you flash your development board with JTAG and dongles with
-DFU, as described in the [board documentation](#Flashing-a-firmware) linked
+DFU, as described in the [board documentation](#flashing-a-firmware) linked
 above. However, we support other programmers:
 
 * OpenOCD: `./deploy.py --board=nrf52840_dongle_opensk --opensk

examples/console_test.rs

@@ -12,24 +12,32 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+#![no_main]
 #![no_std]
 
 extern crate lang_items;
 
-use libtock_drivers::console::{Console, BUFFER_SIZE};
+use libtock_console::Console;
+use libtock_drivers::result::FlexUnwrap;
+use libtock_runtime::{set_main, stack_size, TockSyscalls};
 
-libtock_core::stack_size! {0x800}
+stack_size! {0x800}
+set_main! {main}
+
+type Syscalls = TockSyscalls;
 
 fn main() {
     // Write messages of length up to the console driver's buffer size.
-    let mut buf = [0; BUFFER_SIZE];
+    let mut buf = [0; 1024];
     loop {
         for i in 1..buf.len() {
             for byte in buf.iter_mut().take(i) {
                 *byte = b'0' + ((i % 10) as u8);
             }
             buf[i] = b'\n';
-            Console::write_unbuffered(&mut buf[..(i + 1)]);
+            Console::<Syscalls>::write(&buf[..(i + 1)])
+                .map_err(|e| e.into())
+                .flex_unwrap();
         }
     }
 }

examples/crypto_bench.rs

@@ -12,182 +12,146 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+#![no_main]
 #![no_std]
 
 extern crate alloc;
 extern crate lang_items;
 
+use alloc::format;
+use alloc::vec::Vec;
 use core::fmt::Write;
-use crypto::sha256::Sha256;
-use crypto::{ecdsa, hybrid};
-use libtock_drivers::console::Console;
+use core::hint::black_box;
+use ctap2::env::tock::{TockEnv, TockRng};
+use libtock_console::{Console, ConsoleWriter};
 use libtock_drivers::result::FlexUnwrap;
 use libtock_drivers::timer;
 use libtock_drivers::timer::{Timer, Timestamp};
-use rng256::Rng256;
-// use ctap2::env::tock::{take_storage, TockStorage};
-// use persistent_store::Store;
+use libtock_runtime::{set_main, stack_size, TockSyscalls};
+use opensk::api::crypto::aes256::Aes256;
+use opensk::api::crypto::ecdsa::SecretKey as _;
+use opensk::api::crypto::sha256::Sha256;
+use opensk::env::{AesKey, EcdsaSk, Sha};
 
-libtock_core::stack_size! {0x11800}
+stack_size! {0x2000}
+set_main! {main}
 
-/*fn boot_store(mut storage: TockStorage, erase: bool) -> Store<TockStorage> {
-    use persistent_store::Storage;
-    let num_pages = storage.num_pages();
-    if erase {
-        for page in 0..num_pages {
-            storage.erase_page(page).unwrap();
-        }
-    }
-    Store::new(storage).ok().unwrap()
-}*/
+type Syscalls = TockSyscalls;
 
 fn main() {
-    // Fix to be faster.
-    //let storage = take_storage().unwrap();
-    //let mut _store = boot_store(storage, true);
-
-    let mut console = Console::new();
-    let mut rng = rng256::TockRng256 {};
+    let mut console = Console::<Syscalls>::writer();
     // Setup the timer with a dummy callback (we only care about reading the current time, but the
     // API forces us to set an alarm callback too).
-    let mut with_callback = timer::with_callback(|_, _| {});
+    let mut with_callback = timer::with_callback(|_| {});
     let timer = with_callback.init().flex_unwrap();
 
+    let mut rng = TockRng::<Syscalls>::default();
+
     writeln!(console, "****************************************").unwrap();
-    writeln!(
-        console,
-        "Clock frequency: {} Hz",
-        timer.clock_frequency().hz()
-    )
-    .unwrap();
+    writeln!(console, "Clock frequency: {:?} Hz", timer.clock_frequency()).unwrap();
 
-    custom_bench(
+    // AES
+    bench(&mut console, &timer, "Aes256::new", || {
+        black_box(AesKey::<TockEnv<Syscalls>>::new(&[0; 32]));
+    });
+    let aes_key = AesKey::<TockEnv<Syscalls>>::new(&[0; 32]);
+
+    bench(&mut console, &timer, "Aes256::encrypt_block", || {
+        aes_key.encrypt_block(&mut [0; 16]);
+    });
+    bench(&mut console, &timer, "Aes256::decrypt_block", || {
+        aes_key.decrypt_block(&mut [0; 16]);
+    });
+
+    // CBC
+    let mut blocks = Vec::new();
+    for i in 0..6 {
+        blocks.resize(1 << (i + 4), 0);
+        bench(
             &mut console,
             &timer,
-        "ECDSA keygen",
-        1000,
-        || {},
-        |()| {
-            let k = ecdsa::SecKey::gensk(&mut rng);
-            k.genpk();
-        },
-    );
-
-    custom_bench(
-        &mut console,
-        &timer,
-        "ECDSA sign",
-        1000,
+            &format!("Aes256::encrypt_cbc({} bytes)", blocks.len()),
             || {
-            let k = ecdsa::SecKey::gensk(&mut rng);
-            let mut m = [0; 64];
-            rng.fill_bytes(&mut m);
-            (k, m)
-        },
-        |(k, m)| {
-            k.sign_rfc6979::<Sha256>(&m);
-        },
-    );
-
-    custom_bench(
-        &mut console,
-        &timer,
-        "dilithium::SecKey::gensk_with_pk",
-        1000,
-        || {},
-        |()| {
-            dilithium::sign::SecKey::gensk_with_pk(&mut rng);
-        },
-    );
-
-    custom_bench(
-        &mut console,
-        &timer,
-        "dilithium::SecKey::sign",
-        1000,
-        || {
-            let sk = dilithium::sign::SecKey::gensk(&mut rng);
-            let mut m = [0; 64];
-            rng.fill_bytes(&mut m);
-            (sk, m)
-        },
-        |(sk, m)| {
-            sk.sign(&m);
-        },
-    );
-
-    custom_bench(
-        &mut console,
-        &timer,
-        "hybrid::SecKey::gensk_with_pk",
-        1000,
-        || {},
-        |()| {
-            hybrid::SecKey::gensk_with_pk(&mut rng);
-        },
-    );
-
-    custom_bench(
-        &mut console,
-        &timer,
-        "hybrid::SecKey::sign",
-        1000,
-        || {
-            let sk = hybrid::SecKey::gensk(&mut rng);
-            let mut m = [0; 64];
-            rng.fill_bytes(&mut m);
-            (sk, m)
-        },
-        |(sk, m)| {
-            sk.sign_rfc6979::<Sha256>(&m).to_asn1_der();
+                aes_key.encrypt_cbc(&[0; 16], &mut blocks);
             },
         );
     }
+    drop(blocks);
 
-fn custom_bench<I, O, F, S>(
-    console: &mut Console,
-    timer: &Timer,
-    title: &str,
-    iter_count: usize,
-    mut setup: S,
-    mut f: F,
-) where
-    S: FnMut() -> I,
-    F: FnMut(I) -> O,
+    let mut blocks = Vec::new();
+    for i in 0..6 {
+        blocks.resize(1 << (i + 4), 0);
+        bench(
+            &mut console,
+            &timer,
+            &format!("Aes256::decrypt_cbc({} bytes)", blocks.len()),
+            || {
+                aes_key.decrypt_cbc(&[0; 16], &mut blocks);
+            },
+        );
+    }
+    drop(blocks);
+
+    // SHA-256
+    let mut contents = Vec::new();
+    for i in 0..6 {
+        contents.resize(16 << i, 0);
+        bench(
+            &mut console,
+            &timer,
+            &format!("Sha256::digest({} bytes)", contents.len()),
+            || {
+                Sha::<TockEnv<Syscalls>>::digest(&contents);
+            },
+        );
+    }
+    drop(contents);
+
+    // ECDSA
+    bench(&mut console, &timer, "Ecdsa::SecretKey::random", || {
+        EcdsaSk::<TockEnv<Syscalls>>::random(&mut rng);
+    });
+    let sk = EcdsaSk::<TockEnv<Syscalls>>::random(&mut rng);
+    bench(&mut console, &timer, "Ecdsa::SecretKey::public_key", || {
+        black_box(sk.public_key());
+    });
+    bench(&mut console, &timer, "Ecdsa::SecretKey::sign", || {
+        sk.sign(&[]);
+    });
+
+    writeln!(console, "****************************************").unwrap();
+    writeln!(console, "All the benchmarks are done.\nHave a nice day!").unwrap();
+    writeln!(console, "****************************************").unwrap();
+}
+
+fn bench<F>(console: &mut ConsoleWriter<Syscalls>, timer: &Timer<Syscalls>, title: &str, mut f: F)
+where
+    F: FnMut(),
 {
     writeln!(console, "****************************************").unwrap();
     writeln!(console, "Benchmarking: {}", title).unwrap();
     writeln!(console, "----------------------------------------").unwrap();
-
-    let mut elapsed = 0.0;
-
-    for _ in 1..(iter_count + 1) {
-        let inputs = setup();
-        let start = Timestamp::<f64>::from_clock_value(timer.get_current_clock().flex_unwrap());
-        f(inputs);
-        let end = Timestamp::<f64>::from_clock_value(timer.get_current_clock().flex_unwrap());
-
-        let mut run_duration = (end - start).ms();
-
-        // After 512 seconds, we get a negative difference between the start
-        // time and the end time.
-        if run_duration < 0.0 {
-            run_duration += 512.0 * 1000.0;
+    let mut count = 1;
+    for _ in 0..30 {
+        let start =
+            Timestamp::<f64>::from_clock_value(timer.get_current_counter_ticks().flex_unwrap());
+        for _ in 0..count {
+            f();
         }
-
-        elapsed += run_duration;
-
-        writeln!(console, "{},", run_duration).unwrap();
-        console.flush();
-    }
-
+        let end =
+            Timestamp::<f64>::from_clock_value(timer.get_current_counter_ticks().flex_unwrap());
+        let elapsed = (end - start).ms();
         writeln!(
             console,
-        "Total: {} ms elapsed for {} iterations ({} ms/iter)",
+            "{} ms elapsed for {} iterations ({} ms/iter)",
             elapsed,
-        iter_count,
-        elapsed / (iter_count as f64)
+            count,
+            elapsed / (count as f64)
         )
         .unwrap();
-    console.flush();
+        if elapsed > 1000.0 {
+            break;
+        }
+        count <<= 1;
+    }
 }

examples/erase_storage.rs

@@ -12,18 +12,25 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+#![no_main]
 #![no_std]
 
 extern crate lang_items;
 
 use core::fmt::Write;
 use ctap2::env::tock::take_storage;
-use libtock_drivers::console::Console;
-use libtock_drivers::led;
+use libtock_console::Console;
 use libtock_drivers::result::FlexUnwrap;
+use libtock_leds::Leds;
+use libtock_platform as platform;
+use libtock_runtime::{set_main, stack_size, TockSyscalls};
 use persistent_store::{Storage, StorageIndex};
+use platform::DefaultConfig;
 
-libtock_core::stack_size! {0x800}
+stack_size! {0x800}
+set_main! {main}
+
+type Syscalls = TockSyscalls;
 
 fn is_page_erased(storage: &dyn Storage, page: usize) -> bool {
     let index = StorageIndex { page, byte: 0 };
@@ -36,20 +43,21 @@ fn is_page_erased(storage: &dyn Storage, page: usize) -> bool {
 }
 
 fn main() {
-    led::get(1).flex_unwrap().on().flex_unwrap(); // red on dongle
-    let mut storage = take_storage().unwrap();
+    Leds::<Syscalls>::on(1).map_err(|e| e.into()).flex_unwrap(); // red on dongle
+    let mut storage = take_storage::<Syscalls, DefaultConfig>().unwrap();
     let num_pages = storage.num_pages();
-    writeln!(Console::new(), "Erase {} pages of storage:", num_pages).unwrap();
+    let mut console = Console::<Syscalls>::writer();
+    writeln!(console, "Erase {} pages of storage:", num_pages).unwrap();
     for page in 0..num_pages {
-        write!(Console::new(), "- Page {} ", page).unwrap();
+        write!(console, "- Page {} ", page).unwrap();
         if is_page_erased(&storage, page) {
-            writeln!(Console::new(), "skipped (was already erased).").unwrap();
+            writeln!(console, "skipped (was already erased).").unwrap();
         } else {
             storage.erase_page(page).unwrap();
-            writeln!(Console::new(), "erased.").unwrap();
+            writeln!(console, "erased.").unwrap();
         }
     }
-    writeln!(Console::new(), "Done.").unwrap();
-    led::get(1).flex_unwrap().off().flex_unwrap();
-    led::get(0).flex_unwrap().on().flex_unwrap(); // green on dongle
+    writeln!(console, "Done.").unwrap();
+    Leds::<Syscalls>::on(1).map_err(|e| e.into()).flex_unwrap();
+    Leds::<Syscalls>::off(0).map_err(|e| e.into()).flex_unwrap(); // green on dongle
 }

examples/measure_stack.rs

@@ -1,184 +0,0 @@
-// Copyright 2022 Google LLC
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-#![no_std]
-#![feature(asm)]
-#![feature(llvm_asm)]
-#![allow(dead_code)]
-
-extern crate alloc;
-extern crate lang_items;
-
-use core::fmt::Write;
-use core::ptr;
-use crypto::sha256::Sha256;
-use crypto::{ecdsa, hybrid, sha256};
-use libtock_drivers::console::Console;
-
-libtock_core::stack_size! {0x11800}
-
-#[inline(never)]
-fn read_stack_pointer() -> u32 {
-    let x = 1u32;
-    let address = &x as *const u32;
-    address as u32
-}
-
-#[inline(never)]
-fn print_stack_pointer(console: &mut Console) {
-    let x = 1u32;
-    writeln!(console, "Stack pointer: {:?}", &x as *const u32).unwrap();
-}
-
-/// Writes a byte pattern to a memory range.
-///
-/// Since the stack grows to lower addresses, end < start.
-/// Addresses after start must be unused, i.e. start must be at least the current stack pointer.
-/// Addresses until end should be within the stack area.
-unsafe fn paint_memory(start: u32, end: u32) {
-    for address in (end..start).step_by(4) {
-        let p = address as *const u32;
-        ptr::write(p as *mut u32, 0xCDCDCDCD);
-    }
-}
-
-/// Find the lowest address that does not have the 0xCD pattern.
-unsafe fn find_border(start: u32, end: u32) -> u32 {
-    for address in (end..start).step_by(4) {
-        let p = address as *const u32;
-        if ptr::read(p) != 0xCDCDCDCD {
-            return address;
-        }
-    }
-    start
-}
-
-#[inline(never)]
-pub fn black_box<T>(dummy: T) -> T {
-    unsafe { llvm_asm!("" : : "r"(&dummy)) }
-    dummy
-}
-
-#[inline(never)]
-fn keygen_ecdsa(rng: &mut rng256::TockRng256) {
-    let sk = ecdsa::SecKey::gensk(rng);
-    black_box(sk);
-}
-
-#[inline(never)]
-fn keygen_dilithium(rng: &mut rng256::TockRng256) {
-    let sk = dilithium::sign::SecKey::gensk(rng);
-    black_box(sk);
-}
-
-#[inline(never)]
-fn keygen_hybrid(rng: &mut rng256::TockRng256) {
-    let sk = hybrid::SecKey::gensk_with_pk(rng);
-    black_box(sk);
-}
-
-#[inline(never)]
-fn sign_ecdsa(rng: &mut rng256::TockRng256, sk: &ecdsa::SecKey) {
-    let sig = sk.sign_rng::<sha256::Sha256, _>(&[], rng);
-    black_box(sig);
-}
-
-fn sign_dilithium(sk: &dilithium::sign::SecKey) {
-    let sig = sk.sign(&[]);
-    black_box(sig);
-}
-
-#[inline(never)]
-fn sign_hybrid(sk: &hybrid::SecKey) {
-    let sig = sk.sign_rfc6979::<Sha256>(&[]);
-    black_box(sig);
-}
-
-// Measure the stack usage of the method itself, plus a u32.
-#[inline(never)]
-fn dummy_test() {
-    let x = 1u32;
-    black_box(x);
-}
-
-// Tests whether input parameters are correctly ignored in the measurement.
-#[inline(never)]
-fn param_test(big_param: &mut [u8; 0x1000]) {
-    let x = 0x01;
-    big_param[0] = x;
-    black_box(x);
-}
-
-fn write_result(console: &mut Console, text: &str, size: u32) {
-    writeln!(console, "{} size: 0x{:08X}", text, size).unwrap();
-}
-
-fn main() {
-    let mut console = Console::new();
-
-    let x = 1u32;
-    let sp = &x as *const u32;
-    // Should be safe to write from here.
-    let start = sp as u32 - 0x100u32;
-    writeln!(console, "Search start address: 0x{:08X}", start).unwrap();
-    print_stack_pointer(&mut console);
-
-    let mut rng = rng256::TockRng256 {};
-
-    unsafe { paint_memory(start, 0x20020000) };
-    keygen_ecdsa(&mut rng);
-    let min_address1 = unsafe { find_border(start, 0x20020000) };
-
-    unsafe { paint_memory(start, 0x20020000) };
-    keygen_dilithium(&mut rng);
-    let min_address2 = unsafe { find_border(start, 0x20020000) };
-
-    unsafe { paint_memory(start, 0x20020000) };
-    keygen_hybrid(&mut rng);
-    let min_address3 = unsafe { find_border(start, 0x20020000) };
-
-    let sk = ecdsa::SecKey::gensk(&mut rng);
-    unsafe { paint_memory(start, 0x20020000) };
-    sign_ecdsa(&mut rng, &sk);
-    let min_address4 = unsafe { find_border(start, 0x20020000) };
-
-    let sk = dilithium::sign::SecKey::gensk(&mut rng);
-    unsafe { paint_memory(start, 0x20020000) };
-    sign_dilithium(&sk);
-    let min_address5 = unsafe { find_border(start, 0x20020000) };
-
-    let sk = hybrid::SecKey::gensk(&mut rng);
-    unsafe { paint_memory(start, 0x20020000) };
-    sign_hybrid(&sk);
-    let min_address6 = unsafe { find_border(start, 0x20020000) };
-
-    let mut param = [0; 0x1000];
-    unsafe { paint_memory(start, 0x20020000) };
-    param_test(&mut param);
-    let min_address7 = unsafe { find_border(start, 0x20020000) };
-
-    unsafe { paint_memory(start, 0x20020000) };
-    dummy_test();
-    let min_address8 = unsafe { find_border(start, 0x20020000) };
-
-    let main_end = read_stack_pointer();
-    write_result(&mut console, "    keygen_ecdsa", main_end - min_address1);
-    write_result(&mut console, "keygen_dilithium", main_end - min_address2);
-    write_result(&mut console, "   keygen_hybrid", main_end - min_address3);
-    write_result(&mut console, "      sign_ecdsa", main_end - min_address4);
-    write_result(&mut console, "  sign_dilithium", main_end - min_address5);
-    write_result(&mut console, "     sign_hybrid", main_end - min_address6);
-    write_result(&mut console, "      test dummy", main_end - min_address7);
-    write_result(&mut console, "      test input", main_end - min_address8);
-}

examples/nfct_test.rs

@@ -1,3 +1,4 @@
+#![no_main]
 #![no_std]
 
 extern crate alloc;
@@ -5,27 +6,32 @@ extern crate lang_items;
 extern crate libtock_drivers;
 
 use core::fmt::Write;
-use libtock_drivers::console::Console;
+use libtock_console::{Console, ConsoleWriter};
+use libtock_runtime::{set_main, stack_size, TockSyscalls};
 
-libtock_core::stack_size! {0x4000}
+stack_size! {0x4000}
+set_main! {main}
+
+type Syscalls = TockSyscalls;
 
 #[cfg(not(feature = "with_nfc"))]
 mod example {
-    use super::{Console, Write};
+    use super::{ConsoleWriter, Syscalls, Write};
 
-    pub fn nfc(console: &mut Console) {
+    pub fn nfc(console: &mut ConsoleWriter<Syscalls>) {
         writeln!(console, "NFC feature flag is missing!").unwrap();
     }
 }
 
 #[cfg(feature = "with_nfc")]
 mod example {
-    use super::{Console, Write};
-    use libtock_core::result::CommandError;
+    use super::{Console, ConsoleWriter, Write};
+    use crate::Syscalls;
     use libtock_drivers::nfc::{NfcTag, RecvOp};
     use libtock_drivers::result::{FlexUnwrap, TockError};
     use libtock_drivers::timer;
     use libtock_drivers::timer::{Timer, Timestamp};
+    use libtock_platform::{DefaultConfig, ErrorCode};
 
     #[derive(Copy, Clone, Debug, PartialEq)]
     #[allow(clippy::upper_case_acronyms)]
@@ -48,16 +54,15 @@ mod example {
         ENOSUPPORT,
     }
 
-    impl From<isize> for ReturnCode {
-        fn from(original: isize) -> ReturnCode {
+    impl From<ErrorCode> for ReturnCode {
+        fn from(original: ErrorCode) -> ReturnCode {
             match original {
-                0 => ReturnCode::SUCCESS,
-                -1 => ReturnCode::FAIL,
-                -2 => ReturnCode::EBUSY,
-                -4 => ReturnCode::EOFF,
-                -6 => ReturnCode::EINVAL,
-                -8 => ReturnCode::ECANCEL,
-                -9 => ReturnCode::ENOMEM,
+                ErrorCode::Fail => ReturnCode::FAIL,
+                ErrorCode::Busy => ReturnCode::EBUSY,
+                ErrorCode::Off => ReturnCode::EOFF,
+                ErrorCode::Invalid => ReturnCode::EINVAL,
+                ErrorCode::Cancel => ReturnCode::ECANCEL,
+                ErrorCode::NoMem => ReturnCode::ENOMEM,
                 _ => ReturnCode::ENOSUPPORT,
             }
         }
@@ -66,34 +71,32 @@ mod example {
     /// Helper function to write on console the received packet.
     fn print_rx_buffer(buf: &mut [u8]) {
         if let Some((last, bytes)) = buf.split_last() {
-            let mut console = Console::new();
+            let mut console = Console::<Syscalls>::writer();
             write!(console, "RX:").unwrap();
             for byte in bytes {
                 write!(console, " {:02x?}", byte).unwrap();
             }
             writeln!(console, " {:02x?}", last).unwrap();
-            console.flush();
         }
     }
 
     /// Function to identify the time elapsed for a transmission request.
     fn bench_transmit(
-        console: &mut Console,
-        timer: &Timer,
+        console: &mut ConsoleWriter<Syscalls>,
+        timer: &Timer<Syscalls>,
         title: &str,
-        mut buf: &mut [u8],
+        buf: &mut [u8],
     ) -> ReturnCode {
         let amount = buf.len();
-        let start = Timestamp::<f64>::from_clock_value(timer.get_current_clock().flex_unwrap());
-        match NfcTag::transmit(&mut buf, amount) {
+        let start =
+            Timestamp::<f64>::from_clock_value(timer.get_current_counter_ticks().flex_unwrap());
+        match NfcTag::<Syscalls, DefaultConfig>::transmit(buf, amount as u32) {
             Ok(_) => (),
-            Err(TockError::Command(CommandError {
-                return_code: -8, /* ECANCEL: No Field*/
-                ..
-            })) => return ReturnCode::ECANCEL,
-            Err(_) => writeln!(Console::new(), " -- tx error!").unwrap(),
+            Err(TockError::Command(ErrorCode::Cancel)) => return ReturnCode::ECANCEL,
+            Err(_) => writeln!(console, " -- tx error!").unwrap(),
         }
-        let end = Timestamp::<f64>::from_clock_value(timer.get_current_clock().flex_unwrap());
+        let end =
+            Timestamp::<f64>::from_clock_value(timer.get_current_counter_ticks().flex_unwrap());
         let elapsed = (end - start).ms();
         writeln!(
             console,
@@ -104,21 +107,21 @@ mod example {
             (amount as f64) / elapsed * 8.
         )
         .unwrap();
-        console.flush();
+
         ReturnCode::SUCCESS
     }
 
-    fn receive_packet(console: &mut Console, mut buf: &mut [u8; 256]) -> ReturnCode {
-        match NfcTag::receive(&mut buf) {
+    fn receive_packet(console: &mut ConsoleWriter<Syscalls>, buf: &mut [u8; 256]) -> ReturnCode {
+        match NfcTag::<Syscalls, DefaultConfig>::receive(buf) {
             Ok(RecvOp {
                 recv_amount: amount,
                 ..
             }) => {
-                if amount <= buf.len() {
-                    print_rx_buffer(&mut buf[..amount]);
+                if amount <= buf.len() as u32 {
+                    print_rx_buffer(&mut buf[..amount as usize]);
                 }
             }
-            Err(TockError::Command(CommandError { return_code, .. })) => return return_code.into(),
+            Err(TockError::Command(code)) => return code.into(),
             Err(_) => {
                 writeln!(console, " -- RX Err").unwrap();
                 return ReturnCode::ECANCEL;
@@ -127,54 +130,58 @@ mod example {
         ReturnCode::SUCCESS
     }
 
-    fn transmit_reply(mut console: &mut Console, timer: &Timer, buf: &[u8]) -> ReturnCode {
+    fn transmit_reply(
+        console: &mut ConsoleWriter<Syscalls>,
+        timer: &Timer<Syscalls>,
+        buf: &[u8],
+    ) -> ReturnCode {
         let mut return_code = ReturnCode::SUCCESS;
         match buf[0] {
             0xe0 /* RATS */=> {
                 let mut answer_to_select = [0x05, 0x78, 0x80, 0xB1, 0x00];
-                return_code = bench_transmit(&mut console, timer, "TX: ATS", &mut answer_to_select);
+                return_code = bench_transmit(console, timer, "TX: ATS", &mut answer_to_select);
             }
             0xc2 /* DESELECT */ => {
                 // Ignore the request
                 let mut command_error = [0x6A, 0x81];
-                return_code = bench_transmit(&mut console, timer, "TX: DESELECT", &mut command_error);
+                return_code = bench_transmit(console, timer, "TX: DESELECT", &mut command_error);
             }
             0x02 | 0x03 /* APDU Prefix */ => match buf[2] {
                 // If the received packet is applet selection command (FIDO 2)
                 0xa4 /* SELECT */ => if buf[3] == 0x04 && buf[5] == 0x08 && buf[6] == 0xa0 {
                     // Vesion: "FIDO_2_0"
                     let mut reply = [buf[0], 0x46, 0x49, 0x44, 0x4f, 0x5f, 0x32, 0x5f, 0x30, 0x90, 0x00,];
-                    return_code = bench_transmit(&mut console, timer, "TX: Version Str", &mut reply);
+                    return_code = bench_transmit(console, timer, "TX: Version Str", &mut reply);
                 } else if (buf[6] == 0xd2 && buf[7] == 0x76) || (buf[6] == 0xe1 && (buf[7] == 0x03 || buf[7] == 0x04)){
                     let mut reply = [buf[0], 0x90, 0x00];
-                    return_code = bench_transmit(&mut console, timer, "TX: 0x9000", &mut reply);
+                    return_code = bench_transmit(console, timer, "TX: 0x9000", &mut reply);
                 } else /* Unknown file */ {
                     let mut reply = [buf[0], 0x6a, 0x82];
-                    return_code = bench_transmit(&mut console, timer, "TX: 0x6A82", &mut reply);
+                    return_code = bench_transmit(console, timer, "TX: 0x6A82", &mut reply);
                 }
                 0xb0 /* READ */ =>  match buf[5] {
                     0x02 => {
                         let mut reply = [buf[0], 0x12, 0x90, 0x00,];
-                        return_code = bench_transmit(&mut console, timer, "TX: File Size", &mut reply);
+                        return_code = bench_transmit(console, timer, "TX: File Size", &mut reply);
                     }
                     0x12 => {
                         let mut reply = [buf[0], 0xd1, 0x01, 0x0e, 0x55, 0x77, 0x77, 0x77, 0x2e, 0x6f, 0x70, 0x65,
                         0x6e, 0x73, 0x6b, 0x2e, 0x64, 0x65, 0x76, 0x90, 0x00,];
-                        return_code = bench_transmit(&mut console, timer, "TX: NDEF", &mut reply);
+                        return_code = bench_transmit(console, timer, "TX: NDEF", &mut reply);
                     }
                     0x0f => {
                         let mut reply = [buf[0], 0x00, 0x0f, 0x20, 0x00, 0x7f, 0x00, 0x7f, 0x04, 0x06, 0xe1, 0x04,
                         0x00, 0x7f, 0x00, 0x00, 0x90, 0x00,];
-                        return_code = bench_transmit(&mut console, timer, "TX: CC", &mut reply);
+                        return_code = bench_transmit(console, timer, "TX: CC", &mut reply);
                     }
                     _ => {
                         let mut reply = [buf[0], 0x90, 0x00];
-                        return_code = bench_transmit(&mut console, timer, "TX: 0x9000", &mut reply);
+                        return_code = bench_transmit(console, timer, "TX: 0x9000", &mut reply);
                     }
                 }
                 _ => {
                     let mut reply = [buf[0], 0x90, 0x00];
-                    return_code = bench_transmit(&mut console, timer, "TX: 0x9000", &mut reply);
+                    return_code = bench_transmit(console, timer, "TX: 0x9000", &mut reply);
                 }
             }
             0x26 | 0x52 | 0x50 /* REQA | WUPA | Halt */ => {
@@ -185,31 +192,27 @@ mod example {
         return_code
     }
 
-    pub fn nfc(mut console: &mut Console) {
+    pub fn nfc(console: &mut ConsoleWriter<Syscalls>) {
         // Setup the timer with a dummy callback (we only care about reading the current time, but the
         // API forces us to set an alarm callback too).
-        let mut with_callback = timer::with_callback(|_, _| {});
+        let mut with_callback = timer::with_callback(|_| {});
+
         let timer = with_callback.init().flex_unwrap();
 
-        writeln!(
-            console,
-            "Clock frequency: {} Hz",
-            timer.clock_frequency().hz()
-        )
-        .unwrap();
+        writeln!(console, "Clock frequency: {:?} Hz", timer.clock_frequency()).unwrap();
 
         let mut state_change_counter = 0;
         loop {
             let mut rx_buf = [0; 256];
-            match receive_packet(&mut console, &mut rx_buf) {
+            match receive_packet(console, &mut rx_buf) {
                 ReturnCode::EOFF => {
                     // Not configured
-                    while !NfcTag::enable_emulation() {}
+                    while !NfcTag::<Syscalls, DefaultConfig>::enable_emulation() {}
                     // Configure Type 4 tag
-                    while !NfcTag::configure(4) {}
+                    while !NfcTag::<Syscalls, DefaultConfig>::configure(4) {}
                 }
                 ReturnCode::ECANCEL /* field lost */ => {
-                    NfcTag::disable_emulation();
+                    NfcTag::<Syscalls, DefaultConfig>::disable_emulation();
                 }
                 ReturnCode::EBUSY /* awaiting select*/ => (),
                 ReturnCode::ENOMEM => {
@@ -220,9 +223,9 @@ mod example {
                 ReturnCode::ENOSUPPORT => (),
                 ReturnCode::SUCCESS => {
                     // If the reader restarts the communication then disable the tag.
-                    match transmit_reply(&mut console, &timer, &rx_buf) {
+                    match transmit_reply(console, &timer, &rx_buf) {
                         ReturnCode::ECANCEL | ReturnCode::EOFF => {
-                            if NfcTag::disable_emulation() {
+                            if NfcTag::<Syscalls, DefaultConfig>::disable_emulation() {
                                 writeln!(console, " -- TAG DISABLED").unwrap();
                             }
                             state_change_counter += 1;
@@ -239,7 +242,7 @@ mod example {
 }
 
 fn main() {
-    let mut console = Console::new();
+    let mut console = Console::<Syscalls>::writer();
     writeln!(console, "****************************************").unwrap();
     writeln!(console, "nfct_test application is installed").unwrap();
     example::nfc(&mut console);

examples/oom_test.rs

@@ -12,24 +12,30 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+#![no_main]
 #![no_std]
 
 extern crate alloc;
 extern crate lang_items;
 
-libtock_core::stack_size! {0x800}
-
 use alloc::vec::Vec;
 use core::fmt::Write;
-use libtock_drivers::console::Console;
+use libtock_console::Console;
+use libtock_runtime::{set_main, stack_size, TockSyscalls};
+
+stack_size! {0x800}
+set_main! {main}
+
+type Syscalls = TockSyscalls;
 
 fn main() {
-    writeln!(Console::new(), "****************************************").unwrap();
+    let mut console = Console::<Syscalls>::writer();
+    writeln!(console, "****************************************").unwrap();
     for i in 0.. {
-        writeln!(Console::new(), "Allocating {} bytes...", 1 << i).unwrap();
+        writeln!(console, "Allocating {} bytes...", 1 << i).unwrap();
         let x: Vec<u8> = Vec::with_capacity(1 << i);
-        writeln!(Console::new(), "Allocated!").unwrap();
+        writeln!(console, "Allocated!").unwrap();
         drop(x);
-        writeln!(Console::new(), "Dropped!").unwrap();
+        writeln!(console, "Dropped!").unwrap();
     }
 }

examples/panic_test.rs

@@ -12,11 +12,15 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+#![no_main]
 #![no_std]
 
 extern crate lang_items;
 
-libtock_core::stack_size! {0x800}
+use libtock_runtime::{set_main, stack_size};
+
+stack_size! {0x800}
+set_main! {main}
 
 fn main() {
     panic!("Bye world!")

examples/store_latency.rs

@@ -12,6 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+#![no_main]
 #![no_std]
 
 extern crate alloc;
@@ -21,26 +22,34 @@ use alloc::string::{String, ToString};
 use alloc::vec::Vec;
 use alloc::{format, vec};
 use core::fmt::Write;
-use ctap2::env::tock::{take_storage, TockStorage};
-use libtock_drivers::console::Console;
+use ctap2::env::tock::{take_storage, Storage};
+use libtock_console::Console;
+use libtock_drivers::result::FlexUnwrap;
 use libtock_drivers::timer::{self, Duration, Timer, Timestamp};
-use persistent_store::Store;
+use libtock_platform::DefaultConfig;
+use libtock_runtime::{set_main, stack_size, TockSyscalls};
+use persistent_store::{Storage as _, Store};
 
-libtock_core::stack_size! {0x2000}
+stack_size! {0x800}
+set_main! {main}
 
-fn timestamp(timer: &Timer) -> Timestamp<f64> {
-    Timestamp::<f64>::from_clock_value(timer.get_current_clock().ok().unwrap())
+type Syscalls = TockSyscalls;
+
+fn timestamp(timer: &Timer<Syscalls>) -> Timestamp<f64> {
+    Timestamp::<f64>::from_clock_value(timer.get_current_counter_ticks().ok().unwrap())
 }
 
-fn measure<T>(timer: &Timer, operation: impl FnOnce() -> T) -> (T, Duration<f64>) {
+fn measure<T>(timer: &Timer<Syscalls>, operation: impl FnOnce() -> T) -> (T, Duration<f64>) {
     let before = timestamp(timer);
     let result = operation();
     let after = timestamp(timer);
     (result, after - before)
 }
 
-fn boot_store(mut storage: TockStorage, erase: bool) -> Store<TockStorage> {
-    use persistent_store::Storage;
+fn boot_store(
+    mut storage: Storage<Syscalls, DefaultConfig>,
+    erase: bool,
+) -> Store<Storage<Syscalls, DefaultConfig>> {
     let num_pages = storage.num_pages();
     if erase {
         for page in 0..num_pages {
@@ -55,8 +64,7 @@ struct StorageConfig {
     num_pages: usize,
 }
 
-fn storage_config(storage: &TockStorage) -> StorageConfig {
-    use persistent_store::Storage;
+fn storage_config(storage: &Storage<Syscalls, DefaultConfig>) -> StorageConfig {
     StorageConfig {
         num_pages: storage.num_pages(),
     }
@@ -73,19 +81,19 @@ struct Stat {
 }
 
 fn compute_latency(
-    storage: TockStorage,
-    timer: &Timer,
+    storage: Storage<Syscalls, DefaultConfig>,
+    timer: &Timer<Syscalls>,
     num_pages: usize,
     key_increment: usize,
     word_length: usize,
-) -> (TockStorage, Stat) {
+) -> (Storage<Syscalls, DefaultConfig>, Stat) {
     let mut stat = Stat {
         key_increment,
         entry_length: word_length,
         ..Default::default()
     };
 
-    let mut console = Console::new();
+    let mut console = Console::<Syscalls>::writer();
     writeln!(
         console,
         "\nLatency for key_increment={} word_length={}.",
@@ -155,20 +163,22 @@ fn compute_latency(
 }
 
 fn main() {
-    let mut with_callback = timer::with_callback(|_, _| {});
-    let timer = with_callback.init().ok().unwrap();
-    let storage = take_storage().unwrap();
+    let mut with_callback = timer::with_callback::<Syscalls, DefaultConfig, _>(|_| {});
+
+    let timer = with_callback.init().flex_unwrap();
+    let storage = take_storage::<Syscalls, DefaultConfig>().unwrap();
     let config = storage_config(&storage);
     let mut stats = Vec::new();
+    let mut console = Console::<Syscalls>::writer();
 
-    writeln!(Console::new(), "\nRunning 2 tests...").unwrap();
+    writeln!(console, "\nRunning 2 tests...").unwrap();
     // Simulate a store full of credentials (of 50 words).
     let (storage, stat) = compute_latency(storage, &timer, config.num_pages, 1, 50);
     stats.push(stat);
     // Simulate a store full of increments of a single counter.
     let (_storage, stat) = compute_latency(storage, &timer, config.num_pages, 0, 1);
     stats.push(stat);
-    writeln!(Console::new(), "\nDone.\n").unwrap();
+    writeln!(console, "\nDone.\n").unwrap();
 
     const HEADERS: &[&str] = &[
         "Overwrite",
@@ -189,8 +199,8 @@ fn main() {
             format!("{:.1} ms", stat.remove_ms),
         ]);
     }
-    writeln!(Console::new(), "Copy to examples/store_latency.rs:\n").unwrap();
-    writeln!(Console::new(), "{:?}", config).unwrap();
+    writeln!(console, "Copy to examples/store_latency.rs:\n").unwrap();
+    writeln!(console, "{:?}", config).unwrap();
     write_matrix(matrix);
 
     // Results for nrf52840dk_opensk:
@@ -201,10 +211,11 @@ fn main() {
 }
 
 fn align(x: &str, n: usize) {
+    let mut console = Console::<Syscalls>::writer();
     for _ in 0..n.saturating_sub(x.len()) {
-        write!(Console::new(), " ").unwrap();
+        write!(console, " ").unwrap();
     }
-    write!(Console::new(), "{}", x).unwrap();
+    write!(console, "{}", x).unwrap();
 }
 
 fn write_matrix(mut m: Vec<Vec<String>>) {
@@ -223,6 +234,6 @@ fn write_matrix(mut m: Vec<Vec<String>>) {
         for col in 0..num_cols {
             align(&row[col], col_len[col] + 2 * (col > 0) as usize);
         }
-        writeln!(Console::new()).unwrap();
+        writeln!(Console::<Syscalls>::writer()).unwrap();
     }
 }

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fuzz/fuzz_helper/Cargo.toml

@@ -1,17 +0,0 @@
-[package]
-name = "fuzz_helper"
-version = "0.1.0"
-authors = ["Mingxiao Guo <mingxguo@google.com>"]
-license = "Apache-2.0"
-edition = "2018"
-
-[dependencies]
-arrayref = "0.3.6"
-embedded-time = "0.12.1"
-libtock_drivers = { path = "../../third_party/libtock-drivers" }
-crypto = { path = "../../libraries/crypto", features = ['std'] }
-rng256 = { path = "../../libraries/rng256", features = ['std'] }
-sk-cbor = { path = "../../libraries/cbor" }
-ctap2 = { path = "../..", features = ["fuzz"] }
-lang_items = { path = "../../third_party/lang-items", features = ['std'] }
-arbitrary = { version = "0.4.7", features = ["derive"] }

increase_stack.patch

@@ -1,52 +0,0 @@
-diff --git a/deploy.py b/deploy.py
-index 7f91a2b..f7b1e9a 100755
---- a/deploy.py
-+++ b/deploy.py
-@@ -156,7 +156,7 @@ SUPPORTED_BOARDS = {
-         ),
- }
- 
--APP_HEAP_SIZE = 32768
-+APP_HEAP_SIZE = 16384
- 
- 
- def get_supported_boards() -> Tuple[str]:
-diff --git a/examples/measure_stack.rs b/examples/measure_stack.rs
-index 88f9ebc..d285a80 100644
---- a/examples/measure_stack.rs
-+++ b/examples/measure_stack.rs
-@@ -26,7 +26,7 @@ use crypto::{ecdsa, hybrid, sha256};
- use crypto::sha256::Sha256;
- use libtock_drivers::console::Console;
- 
--libtock_core::stack_size! {0x11800}
-+libtock_core::stack_size! {0x1A000}
- 
- #[inline(never)]
- fn read_stack_pointer() -> u32 {
-diff --git a/nrf52840_layout.ld b/nrf52840_layout.ld
-index 538a2a8..c7dd5e7 100644
---- a/nrf52840_layout.ld
-+++ b/nrf52840_layout.ld
-@@ -14,7 +14,7 @@ MEMORY {
-  * Any change to STACK_SIZE should be accompanied by a corresponding change to
-  * `elf2tab`'s `--stack` option
-  */
--STACK_SIZE = 71680;
-+STACK_SIZE = 106496;
- 
- MPU_MIN_ALIGN = 8K;
- 
-diff --git a/patches/tock/07-app-break-fix.patch b/patches/tock/07-app-break-fix.patch
-index fcf46fd..4048b59 100644
---- a/patches/tock/07-app-break-fix.patch
-+++ b/patches/tock/07-app-break-fix.patch
-@@ -7,7 +7,7 @@ index c78b1c9fb..2769d0138 100644
-          // The 1.x Tock kernel allocates at least 3 kB to processes, and we need
-          // to ensure that happens as userspace may expect it.
- -        3 * 1024
--+        70 * 1024
-++        104 * 1024
-  
-          // TOCK 2.0
-          //

layout.ld

@@ -1,158 +0,0 @@
-/* Userland Generic Layout
- *
- * Currently, due to incomplete ROPI-RWPI support in rustc (see
- * https://github.com/tock/libtock-rs/issues/28), this layout implements static
- * linking. An application init script must define the FLASH and SRAM address
- * ranges as well as MPU_MIN_ALIGN before including this layout file.
- *
- * Here is a an example application linker script to get started:
- *     MEMORY {
- *         /* FLASH memory region must start immediately *after* the Tock
- *          * Binary Format headers, which means you need to offset the
- *          * beginning of FLASH memory region relative to where the
- *          * application is loaded.
- *         FLASH (rx) : ORIGIN = 0x10030, LENGTH = 0x0FFD0
- *         SRAM (RWX) : ORIGIN = 0x20000, LENGTH = 0x10000
- *     }
- *     MPU_MIN_ALIGN = 8K;
- *     INCLUDE ../libtock-rs/layout.ld
- */
-
-ENTRY(_start)
-
-SECTIONS {
-    /* Section for just the app crt0 header.
-     * This must be first so that the app can find it.
-     */
-    /* Runtime setup logic. The crt0_header symbol is used by the entry point
-     * assembly. We have to include start here rather than .text because
-     * otherwise elf2tab fails to recognize that the process binary's flash
-     * region should start at the beginning of .start.
-     */
-    .start :
-    {
-        _beginning = .; /* Start of the app in flash. */
-        crt0_header = .;
-        /**
-         * Populate the header expected by `crt0`:
-         *
-         *  struct hdr {
-         *    uint32_t got_sym_start;
-         *    uint32_t got_start;
-         *    uint32_t got_size;
-         *    uint32_t data_sym_start;
-         *    uint32_t data_start;
-         *    uint32_t data_size;
-         *    uint32_t bss_start;
-         *    uint32_t bss_size;
-         *    uint32_t reldata_start;
-         *    uint32_t stack_size;
-         *  };
-         */
-        /* Offset of GOT symbols in flash */
-        LONG(LOADADDR(.got) - _beginning);
-        /* Offset of GOT section in memory */
-        LONG(_got);
-        /* Size of GOT section */
-        LONG(SIZEOF(.got));
-        /* Offset of data symbols in flash */
-        LONG(LOADADDR(.data) - _beginning);
-        /* Offset of data section in memory */
-        LONG(_data);
-        /* Size of data section */
-        LONG(SIZEOF(.data));
-        /* Offset of BSS section in memory */
-        LONG(_bss);
-        /* Size of BSS section */
-        LONG(SIZEOF(.bss));
-        /* First address offset after program flash, where elf2tab places
-         * .rel.data section */
-        LONG(LOADADDR(.endflash) - _beginning);
-        /* The size of the stack requested by this application */
-        LONG(_stack_top_aligned - _sstack);
-        /* Pad the header out to a multiple of 32 bytes so there is not a gap
-         * between the header and subsequent .data section. It's unclear why,
-         * but LLD is aligning sections to a multiple of 32 bytes. */
-        . = ALIGN(32);
-
-        *(.start)
-    } > FLASH =0xFFFFFFFF
-
-    /* Text section, Code! */
-    .text :
-    {
-        . = ALIGN(4);
-        _text = .;
-        *(.text*)
-        *(.rodata*)
-        KEEP (*(.syscalls))
-        *(.ARM.extab*)
-        . = ALIGN(4); /* Make sure we're word-aligned here */
-        _etext = .;
-    } > FLASH =0xFFFFFFFF
-
-    /* Application stack */
-    .stack (NOLOAD) :
-    {
-        /* elf2tab requires that the `_sram_origin` symbol be present to
-         * mark the first address in the SRAM memory. Since ELF files do
-         * not really need to specify this address as they only care about
-         * loading into flash, we need to manually mark this address for
-         * elf2tab. elf2tab will use it to add a fixed address header in the
-         * TBF header if needed.
-         */
-        _sram_origin = .;
-        _sstack = .;
-        KEEP(*(.stack_buffer))
-        _stack_top_unaligned = .;
-        . = ALIGN(8);
-        _stack_top_aligned = .;
-    } > SRAM
-
-    /* Data section, static initialized variables
-     *  Note: This is placed in Flash after the text section, but needs to be
-     *  moved to SRAM at runtime
-     */
-    .data : AT (_etext)
-    {
-        . = ALIGN(4); /* Make sure we're word-aligned here */
-        _data = .;
-        KEEP(*(.data*))
-        *(.sdata*) /* RISC-V small-pointer data section */
-        . = ALIGN(4); /* Make sure we're word-aligned at the end of flash */
-    } > SRAM
-
-    /* Global Offset Table */
-    .got :
-    {
-        . = ALIGN(4); /* Make sure we're word-aligned here */
-        _got = .;
-        *(.got*)
-        *(.got.plt*)
-        . = ALIGN(4);
-    } > SRAM
-
-    /* BSS section, static uninitialized variables */
-    .bss :
-    {
-        . = ALIGN(4); /* Make sure we're word-aligned here */
-        _bss = .;
-        KEEP(*(.bss* .sbss*))
-        *(COMMON)
-        . = ALIGN(4);
-    } > SRAM
-
-    /* End of flash. */
-    .endflash :
-    {
-    } > FLASH
-
-    /* Sections we do not need. */
-    /DISCARD/ :
-    {
-      *(.ARM.exidx .eh_frame)
-    }
-}
-
-ASSERT((_stack_top_aligned - _stack_top_unaligned) == 0, "
-STACK_SIZE must be 8 byte multiple")

libraries/cbor/Cargo.lock

@@ -1,7 +0,0 @@
-# This file is automatically @generated by Cargo.
-# It is not intended for manual editing.
-version = 3
-
-[[package]]
-name = "sk-cbor"
-version = "0.1.2"

libraries/cbor/README.md

@@ -13,41 +13,26 @@ This crate implements Concise Binary Object Representation (CBOR) from [RFC
 
 ```rust
 fn main() {
-    // Build a CBOR object with various different types included. Note that this
+    // Build a CBOR object with the crate's convenience macros. Note that this
     // object is not built in canonical order.
-    let manual_object = Value::Map(vec![
-        (
-            Value::Unsigned(1),
-            Value::Array(vec![Value::Unsigned(2), Value::Unsigned(3)]),
-        ),
-        (
-            Value::TextString("tstr".to_owned()),
-            Value::ByteString(vec![1, 2, 3]),
-        ),
-        (Value::Negative(-2), Value::Simple(SimpleValue::NullValue)),
-        (Value::Unsigned(3), Value::Simple(SimpleValue::TrueValue)),
-    ]);
-
-    // Build the same object using the crate's convenience macros.
-    let macro_object = cbor_map! {
+    let map_object = cbor_map! {
         1 => cbor_array![2, 3],
         "tstr" => cbor_bytes!(vec![1, 2, 3]),
         -2 => cbor_null!(),
         3 => cbor_true!(),
     };
 
-    assert_eq!(manual_object, macro_object);
-    println!("Object {:?}", manual_object);
+    println!("Object {:?}", map_object);
 
     // Serialize to bytes.
-    let mut manual_data = vec![];
-    sk_cbor::writer::write(manual_object, &mut manual_data);
-    let hex_manual_data = hexify(&manual_data);
+    let mut map_data = vec![];
+    sk_cbor::writer::write(map_object, &mut map_data).unwrap();
+    let hex_map_data = hex::encode(&map_data);
 
     // Serialized version is in canonical order.
-    println!("Serializes to {}", hex_manual_data);
+    println!("Serializes to {}", hex_map_data);
     assert_eq!(
-        hex_manual_data,
+        hex_map_data,
         concat!(
             "a4",         // 4-map
             "01",         // int(1) =>
@@ -63,7 +48,7 @@ fn main() {
 
     // Convert back to an object.  This is different than the original object,
     // because the map is now in canonical order.
-    let recovered_object = sk_cbor::reader::read(&manual_data).unwrap();
+    let recovered_object = sk_cbor::reader::read(&map_data).unwrap();
     println!("Deserializes to {:?}", recovered_object);
 }
 ```

libraries/cbor/examples/cbor.rs

@@ -18,7 +18,7 @@
 
 extern crate alloc;
 
-use sk_cbor::values::{SimpleValue, Value};
+use sk_cbor::values::Value;
 use sk_cbor::{cbor_array, cbor_bytes, cbor_map, cbor_null, cbor_true};
 
 fn hexify(data: &[u8]) -> String {
@@ -32,17 +32,14 @@ fn hexify(data: &[u8]) -> String {
 fn main() {
     // Build a CBOR object with various different types included. Note that this
     // object is not built in canonical order.
-    let manual_object = Value::Map(vec![
+    let manual_object = Value::map(vec![
         (
-            Value::Unsigned(1),
-            Value::Array(vec![Value::Unsigned(2), Value::Unsigned(3)]),
+            Value::from(1),
+            Value::array(vec![Value::from(2), Value::from(3)]),
         ),
-        (
-            Value::TextString("tstr".to_owned()),
-            Value::ByteString(vec![1, 2, 3]),
-        ),
-        (Value::Negative(-2), Value::Simple(SimpleValue::NullValue)),
-        (Value::Unsigned(3), Value::Simple(SimpleValue::TrueValue)),
+        (Value::from("tstr".to_owned()), Value::from(vec![1, 2, 3])),
+        (Value::from(-2), Value::null_value()),
+        (Value::from(3), Value::bool_value(true)),
     ]);
 
     // Build the same object using the crate's convenience macros.

libraries/cbor/fuzz/.gitignore

@@ -0,0 +1,3 @@
+/artifacts/
+/corpus/
+/target/

libraries/cbor/fuzz/Cargo.lock

@@ -1,37 +0,0 @@
-# This file is automatically @generated by Cargo.
-# It is not intended for manual editing.
-version = 3
-
-[[package]]
-name = "arbitrary"
-version = "0.4.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "db55d72333851e17d572bec876e390cd3b11eb1ef53ae821dd9f3b653d2b4569"
-
-[[package]]
-name = "cc"
-version = "1.0.73"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2fff2a6927b3bb87f9595d67196a70493f627687a71d87a0d692242c33f58c11"
-
-[[package]]
-name = "libfuzzer-sys"
-version = "0.3.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fcf184a4b6b274f82a5df6b357da6055d3e82272327bba281c28bbba6f1664ef"
-dependencies = [
- "arbitrary",
- "cc",
-]
-
-[[package]]
-name = "sk-cbor"
-version = "0.1.2"
-
-[[package]]
-name = "sk-cbor-fuzz"
-version = "0.0.0"
-dependencies = [
- "libfuzzer-sys",
- "sk-cbor",
-]

libraries/cbor/src/lib.rs

@@ -22,5 +22,5 @@ pub mod values;
 pub mod writer;
 
 pub use self::reader::read;
-pub use self::values::{SimpleValue, Value};
+pub use self::values::Value;
 pub use self::writer::write;

libraries/cbor/src/macros.rs

@@ -139,9 +139,12 @@ macro_rules! assert_sorted_keys {
 ///
 /// Keys and values are expressions and converted into CBOR Keys and Values.
 /// The syntax for these pairs is `key_expression => value_expression,`.
-/// Duplicate keys will lead to invalid CBOR, i.e. writing these values fails.
 /// Keys do not have to be sorted.
 ///
+/// # Panics
+///
+/// You may not call this function with identical keys in its argument.
+///
 /// Example usage:
 ///
 /// ```rust
@@ -168,7 +171,7 @@ macro_rules! cbor_map {
             $(
                 _map.push(($key.into_cbor_value(), $value.into_cbor_value()));
             )*
-            $crate::values::Value::Map(_map)
+            $crate::values::Value::map(_map)
         }
     };
 }
@@ -214,7 +217,7 @@ macro_rules! cbor_map_options {
                 }
             }
             )*
-            $crate::values::Value::Map(_map)
+            $crate::values::Value::map(_map)
         }
     };
 }
@@ -223,7 +226,7 @@ macro_rules! cbor_map_options {
 #[macro_export]
 macro_rules! cbor_map_collection {
     ( $tree:expr ) => {{
-        $crate::values::Value::from($tree)
+        $crate::values::Value::map($tree)
     }};
 }
 
@@ -250,7 +253,7 @@ macro_rules! cbor_array {
             // The import is unused if the list is empty.
             #[allow(unused_imports)]
             use $crate::values::IntoCborValue;
-            $crate::values::Value::Array(vec![ $( $value.into_cbor_value(), )* ])
+            $crate::values::Value::array(vec![ $( $value.into_cbor_value(), )* ])
         }
     };
 }
@@ -260,7 +263,7 @@ macro_rules! cbor_array {
 macro_rules! cbor_array_vec {
     ( $vec:expr ) => {{
         use $crate::values::IntoCborValue;
-        $crate::values::Value::Array($vec.into_iter().map(|x| x.into_cbor_value()).collect())
+        $crate::values::Value::array($vec.into_iter().map(|x| x.into_cbor_value()).collect())
     }};
 }
 
@@ -268,7 +271,7 @@ macro_rules! cbor_array_vec {
 #[macro_export]
 macro_rules! cbor_true {
     ( ) => {
-        $crate::values::Value::Simple($crate::values::SimpleValue::TrueValue)
+        $crate::values::Value::bool_value(true)
     };
 }
 
@@ -276,7 +279,7 @@ macro_rules! cbor_true {
 #[macro_export]
 macro_rules! cbor_false {
     ( ) => {
-        $crate::values::Value::Simple($crate::values::SimpleValue::FalseValue)
+        $crate::values::Value::bool_value(false)
     };
 }
 
@@ -284,7 +287,7 @@ macro_rules! cbor_false {
 #[macro_export]
 macro_rules! cbor_null {
     ( ) => {
-        $crate::values::Value::Simple($crate::values::SimpleValue::NullValue)
+        $crate::values::Value::null_value()
     };
 }
 
@@ -292,7 +295,7 @@ macro_rules! cbor_null {
 #[macro_export]
 macro_rules! cbor_undefined {
     ( ) => {
-        $crate::values::Value::Simple($crate::values::SimpleValue::Undefined)
+        $crate::values::Value::undefined()
     };
 }
 
@@ -308,7 +311,7 @@ macro_rules! cbor_bool {
 #[macro_export]
 macro_rules! cbor_unsigned {
     ( $x:expr ) => {
-        $crate::values::Value::Unsigned($x)
+        $crate::values::Value::unsigned($x as u64)
     };
 }
 
@@ -316,7 +319,7 @@ macro_rules! cbor_unsigned {
 #[macro_export]
 macro_rules! cbor_int {
     ( $x:expr ) => {
-        $crate::values::Value::integer($x)
+        $crate::values::Value::integer($x as i64)
     };
 }
 
@@ -324,7 +327,7 @@ macro_rules! cbor_int {
 #[macro_export]
 macro_rules! cbor_text {
     ( $x:expr ) => {
-        $crate::values::Value::TextString($x.into())
+        $crate::values::Value::text_string($x.into())
     };
 }
 
@@ -332,7 +335,7 @@ macro_rules! cbor_text {
 #[macro_export]
 macro_rules! cbor_bytes {
     ( $x:expr ) => {
-        $crate::values::Value::ByteString($x)
+        $crate::values::Value::byte_string($x)
     };
 }
 
@@ -340,7 +343,7 @@ macro_rules! cbor_bytes {
 #[macro_export]
 macro_rules! cbor_tagged {
     ( $t:expr, $x: expr ) => {
-        $crate::values::Value::Tag($t, ::alloc::boxed::Box::new($x))
+        $crate::values::Value::tag($t, $x)
     };
 }
 
@@ -362,41 +365,41 @@ macro_rules! cbor_bytes_lit {
 
 #[cfg(test)]
 mod test {
-    use super::super::values::{SimpleValue, Value};
+    use super::super::values::Value;
     use alloc::string::String;
     use alloc::vec;
     use alloc::vec::Vec;
 
     #[test]
     fn test_cbor_simple_values() {
-        assert_eq!(cbor_true!(), Value::Simple(SimpleValue::TrueValue));
-        assert_eq!(cbor_false!(), Value::Simple(SimpleValue::FalseValue));
-        assert_eq!(cbor_null!(), Value::Simple(SimpleValue::NullValue));
-        assert_eq!(cbor_undefined!(), Value::Simple(SimpleValue::Undefined));
+        assert_eq!(cbor_true!(), Value::bool_value(true));
+        assert_eq!(cbor_false!(), Value::bool_value(false));
+        assert_eq!(cbor_null!(), Value::null_value());
+        assert_eq!(cbor_undefined!(), Value::undefined());
     }
 
     #[test]
     fn test_cbor_bool() {
-        assert_eq!(cbor_bool!(true), Value::Simple(SimpleValue::TrueValue));
-        assert_eq!(cbor_bool!(false), Value::Simple(SimpleValue::FalseValue));
+        assert_eq!(cbor_bool!(true), Value::bool_value(true));
+        assert_eq!(cbor_bool!(false), Value::bool_value(false));
     }
 
     #[test]
     fn test_cbor_int_unsigned() {
-        assert_eq!(cbor_int!(0), Value::Unsigned(0));
-        assert_eq!(cbor_int!(1), Value::Unsigned(1));
-        assert_eq!(cbor_int!(123456), Value::Unsigned(123456));
+        assert_eq!(cbor_int!(0), Value::from(0));
+        assert_eq!(cbor_int!(1), Value::from(1));
+        assert_eq!(cbor_int!(123456), Value::from(123456));
         assert_eq!(
             cbor_int!(core::i64::MAX),
-            Value::Unsigned(core::i64::MAX as u64)
+            Value::from(core::i64::MAX as u64)
         );
     }
 
     #[test]
     fn test_cbor_int_negative() {
-        assert_eq!(cbor_int!(-1), Value::Negative(-1));
-        assert_eq!(cbor_int!(-123456), Value::Negative(-123456));
-        assert_eq!(cbor_int!(core::i64::MIN), Value::Negative(core::i64::MIN));
+        assert_eq!(cbor_int!(-1), Value::from(-1));
+        assert_eq!(cbor_int!(-123456), Value::from(-123456));
+        assert_eq!(cbor_int!(core::i64::MIN), Value::from(core::i64::MIN));
     }
 
     #[test]
@@ -413,17 +416,17 @@ mod test {
             core::i64::MAX,
             core::u64::MAX,
         ];
-        let b = Value::Array(vec![
-            Value::Negative(core::i64::MIN),
-            Value::Negative(core::i32::MIN as i64),
-            Value::Negative(-123456),
-            Value::Negative(-1),
-            Value::Unsigned(0),
-            Value::Unsigned(1),
-            Value::Unsigned(123456),
-            Value::Unsigned(core::i32::MAX as u64),
-            Value::Unsigned(core::i64::MAX as u64),
-            Value::Unsigned(core::u64::MAX),
+        let b = Value::array(vec![
+            Value::from(core::i64::MIN),
+            Value::from(core::i32::MIN as i64),
+            Value::from(-123456),
+            Value::from(-1),
+            Value::from(0),
+            Value::from(1),
+            Value::from(123456),
+            Value::from(core::i32::MAX as u64),
+            Value::from(core::i64::MAX as u64),
+            Value::from(core::u64::MAX),
         ]);
         assert_eq!(a, b);
     }
@@ -442,22 +445,17 @@ mod test {
             cbor_map! {},
             cbor_map! {2 => 3},
         ];
-        let b = Value::Array(vec![
-            Value::Negative(-123),
-            Value::Unsigned(456),
-            Value::Simple(SimpleValue::TrueValue),
-            Value::Simple(SimpleValue::NullValue),
-            Value::TextString(String::from("foo")),
-            Value::ByteString(b"bar".to_vec()),
-            Value::Array(Vec::new()),
-            Value::Array(vec![Value::Unsigned(0), Value::Unsigned(1)]),
-            Value::Map(Vec::new()),
-            Value::Map(
-                [(Value::Unsigned(2), Value::Unsigned(3))]
-                    .iter()
-                    .cloned()
-                    .collect(),
-            ),
+        let b = Value::array(vec![
+            Value::from(-123),
+            Value::from(456),
+            Value::bool_value(true),
+            Value::null_value(),
+            Value::from(String::from("foo")),
+            Value::from(b"bar".to_vec()),
+            Value::array(Vec::new()),
+            Value::array(vec![Value::from(0), Value::from(1)]),
+            Value::map(Vec::new()),
+            Value::map([(Value::from(2), Value::from(3))].iter().cloned().collect()),
         ]);
         assert_eq!(a, b);
     }
@@ -465,18 +463,18 @@ mod test {
     #[test]
     fn test_cbor_array_vec_empty() {
         let a = cbor_array_vec!(Vec::<bool>::new());
-        let b = Value::Array(Vec::new());
+        let b = Value::array(Vec::new());
         assert_eq!(a, b);
     }
 
     #[test]
     fn test_cbor_array_vec_int() {
         let a = cbor_array_vec!(vec![1, 2, 3, 4]);
-        let b = Value::Array(vec![
-            Value::Unsigned(1),
-            Value::Unsigned(2),
-            Value::Unsigned(3),
-            Value::Unsigned(4),
+        let b = Value::array(vec![
+            Value::from(1),
+            Value::from(2),
+            Value::from(3),
+            Value::from(4),
         ]);
         assert_eq!(a, b);
     }
@@ -484,10 +482,10 @@ mod test {
     #[test]
     fn test_cbor_array_vec_text() {
         let a = cbor_array_vec!(vec!["a", "b", "c"]);
-        let b = Value::Array(vec![
-            Value::TextString(String::from("a")),
-            Value::TextString(String::from("b")),
-            Value::TextString(String::from("c")),
+        let b = Value::array(vec![
+            Value::from(String::from("a")),
+            Value::from(String::from("b")),
+            Value::from(String::from("c")),
         ]);
         assert_eq!(a, b);
     }
@@ -495,10 +493,10 @@ mod test {
     #[test]
     fn test_cbor_array_vec_bytes() {
         let a = cbor_array_vec!(vec![b"a", b"b", b"c"]);
-        let b = Value::Array(vec![
-            Value::ByteString(b"a".to_vec()),
-            Value::ByteString(b"b".to_vec()),
-            Value::ByteString(b"c".to_vec()),
+        let b = Value::array(vec![
+            Value::from(b"a".to_vec()),
+            Value::from(b"b".to_vec()),
+            Value::from(b"c".to_vec()),
         ]);
         assert_eq!(a, b);
     }
@@ -506,46 +504,35 @@ mod test {
     #[test]
     fn test_cbor_map() {
         let a = cbor_map! {
-            -1 => -23,
             4 => 56,
-            "foo" => true,
-            b"bar" => cbor_null!(),
             5 => "foo",
             6 => b"bar",
             7 => cbor_array![],
             8 => cbor_array![0, 1],
             9 => cbor_map!{},
             10 => cbor_map!{2 => 3},
+            -1 => -23,
+            b"bar" => cbor_null!(),
+            "foo" => true,
         };
-        let b = Value::Map(
+        let b = Value::map(
             [
-                (Value::Negative(-1), Value::Negative(-23)),
-                (Value::Unsigned(4), Value::Unsigned(56)),
+                (Value::from(4), Value::from(56)),
+                (Value::from(5), Value::from(String::from("foo"))),
+                (Value::from(6), Value::from(b"bar".to_vec())),
+                (Value::from(7), Value::array(Vec::new())),
                 (
-                    Value::TextString(String::from("foo")),
-                    Value::Simple(SimpleValue::TrueValue),
+                    Value::from(8),
+                    Value::array(vec![Value::from(0), Value::from(1)]),
                 ),
+                (Value::from(9), Value::map(Vec::new())),
                 (
-                    Value::ByteString(b"bar".to_vec()),
-                    Value::Simple(SimpleValue::NullValue),
-                ),
-                (Value::Unsigned(5), Value::TextString(String::from("foo"))),
-                (Value::Unsigned(6), Value::ByteString(b"bar".to_vec())),
-                (Value::Unsigned(7), Value::Array(Vec::new())),
-                (
-                    Value::Unsigned(8),
-                    Value::Array(vec![Value::Unsigned(0), Value::Unsigned(1)]),
-                ),
-                (Value::Unsigned(9), Value::Map(Vec::new())),
-                (
-                    Value::Unsigned(10),
-                    Value::Map(
-                        [(Value::Unsigned(2), Value::Unsigned(3))]
-                            .iter()
-                            .cloned()
-                            .collect(),
-                    ),
+                    Value::from(10),
+                    Value::map([(Value::from(2), Value::from(3))].iter().cloned().collect()),
                 ),
+                (Value::from(-1), Value::from(-23)),
+                (Value::from(b"bar".to_vec()), Value::null_value()),
+                (Value::from(String::from("foo")), Value::bool_value(true)),
             ]
             .iter()
             .cloned()
@@ -557,54 +544,43 @@ mod test {
     #[test]
     fn test_cbor_map_options() {
         let a = cbor_map_options! {
-            -1 => -23,
             4 => Some(56),
-            11 => None::<String>,
-            "foo" => true,
-            12 => None::<&str>,
-            b"bar" => Some(cbor_null!()),
-            13 => None::<Vec<u8>>,
             5 => "foo",
-            14 => None::<&[u8]>,
             6 => Some(b"bar" as &[u8]),
-            15 => None::<bool>,
             7 => cbor_array![],
-            16 => None::<i32>,
             8 => Some(cbor_array![0, 1]),
-            17 => None::<i64>,
             9 => cbor_map!{},
-            18 => None::<u64>,
             10 => Some(cbor_map!{2 => 3}),
+            11 => None::<String>,
+            12 => None::<&str>,
+            13 => None::<Vec<u8>>,
+            14 => None::<&[u8]>,
+            15 => None::<bool>,
+            16 => None::<i32>,
+            17 => None::<i64>,
+            18 => None::<u64>,
+            -1 => -23,
+            b"bar" => Some(cbor_null!()),
+            "foo" => true,
         };
-        let b = Value::Map(
+        let b = Value::map(
             [
-                (Value::Negative(-1), Value::Negative(-23)),
-                (Value::Unsigned(4), Value::Unsigned(56)),
+                (Value::from(4), Value::from(56)),
+                (Value::from(5), Value::from(String::from("foo"))),
+                (Value::from(6), Value::from(b"bar".to_vec())),
+                (Value::from(7), Value::array(Vec::new())),
                 (
-                    Value::TextString(String::from("foo")),
-                    Value::Simple(SimpleValue::TrueValue),
+                    Value::from(8),
+                    Value::array(vec![Value::from(0), Value::from(1)]),
                 ),
+                (Value::from(9), Value::map(Vec::new())),
                 (
-                    Value::ByteString(b"bar".to_vec()),
-                    Value::Simple(SimpleValue::NullValue),
-                ),
-                (Value::Unsigned(5), Value::TextString(String::from("foo"))),
-                (Value::Unsigned(6), Value::ByteString(b"bar".to_vec())),
-                (Value::Unsigned(7), Value::Array(Vec::new())),
-                (
-                    Value::Unsigned(8),
-                    Value::Array(vec![Value::Unsigned(0), Value::Unsigned(1)]),
-                ),
-                (Value::Unsigned(9), Value::Map(Vec::new())),
-                (
-                    Value::Unsigned(10),
-                    Value::Map(
-                        [(Value::Unsigned(2), Value::Unsigned(3))]
-                            .iter()
-                            .cloned()
-                            .collect(),
-                    ),
+                    Value::from(10),
+                    Value::map([(Value::from(2), Value::from(3))].iter().cloned().collect()),
                 ),
+                (Value::from(-1), Value::from(-23)),
+                (Value::from(b"bar".to_vec()), Value::null_value()),
+                (Value::from(String::from("foo")), Value::bool_value(true)),
             ]
             .iter()
             .cloned()
@@ -616,22 +592,19 @@ mod test {
     #[test]
     fn test_cbor_map_collection_empty() {
         let a = cbor_map_collection!(Vec::<(_, _)>::new());
-        let b = Value::Map(Vec::new());
+        let b = Value::map(Vec::new());
         assert_eq!(a, b);
     }
 
     #[test]
     fn test_cbor_map_collection_foo() {
-        let a = cbor_map_collection!(vec![(Value::Unsigned(2), Value::Unsigned(3))]);
-        let b = Value::Map(vec![(Value::Unsigned(2), Value::Unsigned(3))]);
+        let a = cbor_map_collection!(vec![(Value::from(2), Value::from(3))]);
+        let b = Value::map(vec![(Value::from(2), Value::from(3))]);
         assert_eq!(a, b);
     }
 
     fn extract_map(cbor_value: Value) -> Vec<(Value, Value)> {
-        match cbor_value {
-            Value::Map(map) => map,
-            _ => panic!("Expected CBOR map."),
-        }
+        cbor_value.extract_map().unwrap()
     }
 
     #[test]
@@ -721,4 +694,22 @@ mod test {
         assert_eq!(x4, Some(cbor_unsigned!(40)));
         assert_eq!(x5, None);
     }
+
+    #[test]
+    fn test_destructure_unsorted_cbor_map() {
+        let map = cbor_map! {
+            2 => 20,
+            1 => 10,
+        };
+
+        destructure_cbor_map! {
+            let {
+                1 => x1,
+                2 => x2,
+            } = extract_map(map);
+        }
+
+        assert_eq!(x1, Some(cbor_unsigned!(10)));
+        assert_eq!(x2, Some(cbor_unsigned!(20)));
+    }
 }

libraries/cbor/src/reader.rs

@@ -14,7 +14,7 @@
 
 //! Functionality for deserializing CBOR data into values.
 
-use super::values::{Constants, SimpleValue, Value};
+use super::values::{Constants, SimpleValue, Value, ValueImpl};
 use crate::{
     cbor_array_vec, cbor_bytes_lit, cbor_map_collection, cbor_tagged, cbor_text, cbor_unsigned,
 };
@@ -144,7 +144,7 @@ impl<'a> Reader<'a> {
         if signed_size < 0 {
             Err(DecoderError::OutOfRangeIntegerValue)
         } else {
-            Ok(Value::Negative(-(size_value as i64) - 1))
+            Ok(Value(ValueImpl::Negative(-(size_value as i64) - 1)))
         }
     }
 
@@ -221,7 +221,7 @@ impl<'a> Reader<'a> {
             return Err(DecoderError::UnsupportedFloatingPointValue);
         }
         match SimpleValue::from_integer(size_value) {
-            Some(simple_value) => Ok(Value::Simple(simple_value)),
+            Some(simple_value) => Ok(Value(ValueImpl::Simple(simple_value))),
             None => Err(DecoderError::UnsupportedSimpleValue),
         }
     }

libraries/cbor/src/values.rs

@@ -19,9 +19,13 @@ use alloc::string::{String, ToString};
 use alloc::vec::Vec;
 use core::cmp::Ordering;
 
+/// The CBOR data structure.
+#[derive(Clone, Debug, PartialEq, Eq, PartialOrd, Ord)]
+pub struct Value(pub(crate) ValueImpl);
+
 /// Possible CBOR values.
 #[derive(Clone, Debug)]
-pub enum Value {
+pub(crate) enum ValueImpl {
     /// Unsigned integer value (uint).
     Unsigned(u64),
     /// Signed integer value (nint). Only 63 bits of information are used here.
@@ -42,7 +46,7 @@ pub enum Value {
 
 /// Specific simple CBOR values.
 #[derive(Clone, Debug, PartialEq, Eq, PartialOrd, Ord)]
-pub enum SimpleValue {
+pub(crate) enum SimpleValue {
     FalseValue = 20,
     TrueValue = 21,
     NullValue = 22,
@@ -71,45 +75,177 @@ impl Constants {
 }
 
 impl Value {
+    /// Creates a CBOR unsigned value.
+    pub fn unsigned(int: u64) -> Value {
+        Value(ValueImpl::Unsigned(int))
+    }
+
     /// Create an appropriate CBOR integer value (uint/nint).
     /// For simplicity, this only takes i64. Construct directly for the last bit.
     pub fn integer(int: i64) -> Value {
         if int >= 0 {
-            Value::Unsigned(int as u64)
+            Value(ValueImpl::Unsigned(int as u64))
         } else {
-            Value::Negative(int)
+            Value(ValueImpl::Negative(int))
         }
     }
 
+    /// Creates a CBOR byte string value.
+    pub fn byte_string(bytes: Vec<u8>) -> Value {
+        Value(ValueImpl::ByteString(bytes))
+    }
+
+    /// Creates a CBOR text string value.
+    pub fn text_string(text: String) -> Value {
+        Value(ValueImpl::TextString(text))
+    }
+
+    /// Create a CBOR array value.
+    pub fn array(a: Vec<Value>) -> Value {
+        Value(ValueImpl::Array(a))
+    }
+
+    /// Create a CBOR map value.
+    ///
+    /// Keys do not have to be sorted.
+    ///
+    /// # Panics
+    ///
+    /// You may not call this function with identical keys in its argument.
+    pub fn map(mut m: Vec<(Value, Value)>) -> Value {
+        m.sort_by(|a, b| a.0.cmp(&b.0));
+        let map_len = m.len();
+        m.dedup_by(|a, b| a.0.eq(&b.0));
+        if map_len != m.len() {
+            panic!();
+        }
+        Value(ValueImpl::Map(m))
+    }
+
+    /// Create a CBOR tagged value.
+    pub fn tag(int: u64, value: Value) -> Value {
+        Value(ValueImpl::Tag(int, Box::new(value)))
+    }
+
     /// Create a CBOR boolean simple value.
     pub fn bool_value(b: bool) -> Value {
         if b {
-            Value::Simple(SimpleValue::TrueValue)
+            Value(ValueImpl::Simple(SimpleValue::TrueValue))
         } else {
-            Value::Simple(SimpleValue::FalseValue)
+            Value(ValueImpl::Simple(SimpleValue::FalseValue))
         }
     }
 
-    /// Return the major type for the [`Value`].
+    /// Creates a null value.
+    pub fn null_value() -> Value {
+        Value(ValueImpl::Simple(SimpleValue::NullValue))
+    }
+
+    /// Creates an undefined value.
+    pub fn undefined() -> Value {
+        Value(ValueImpl::Simple(SimpleValue::Undefined))
+    }
+
+    pub fn extract_unsigned(self) -> Option<u64> {
+        match self {
+            Value(ValueImpl::Unsigned(unsigned)) => Some(unsigned),
+            _ => None,
+        }
+    }
+
+    pub fn extract_integer(self) -> Option<i64> {
+        match self {
+            Value(ValueImpl::Unsigned(unsigned)) => {
+                if unsigned <= core::i64::MAX as u64 {
+                    Some(unsigned as i64)
+                } else {
+                    None
+                }
+            }
+            Value(ValueImpl::Negative(signed)) => Some(signed),
+            _ => None,
+        }
+    }
+
+    pub fn extract_byte_string(self) -> Option<Vec<u8>> {
+        match self {
+            Value(ValueImpl::ByteString(byte_string)) => Some(byte_string),
+            _ => None,
+        }
+    }
+
+    pub fn extract_text_string(self) -> Option<String> {
+        match self {
+            Value(ValueImpl::TextString(text_string)) => Some(text_string),
+            _ => None,
+        }
+    }
+
+    pub fn extract_array(self) -> Option<Vec<Value>> {
+        match self {
+            Value(ValueImpl::Array(array)) => Some(array),
+            _ => None,
+        }
+    }
+
+    pub fn extract_map(self) -> Option<Vec<(Value, Value)>> {
+        match self {
+            Value(ValueImpl::Map(map)) => Some(map),
+            _ => None,
+        }
+    }
+
+    pub fn extract_tag(self) -> Option<(u64, Value)> {
+        match self {
+            Value(ValueImpl::Tag(tag, value)) => Some((tag, *value)),
+            _ => None,
+        }
+    }
+
+    pub fn extract_bool(self) -> Option<bool> {
+        match self {
+            Value(ValueImpl::Simple(SimpleValue::FalseValue)) => Some(false),
+            Value(ValueImpl::Simple(SimpleValue::TrueValue)) => Some(true),
+            _ => None,
+        }
+    }
+
+    pub fn extract_null(self) -> Option<()> {
+        match self {
+            Value(ValueImpl::Simple(SimpleValue::NullValue)) => Some(()),
+            _ => None,
+        }
+    }
+
+    pub fn extract_undefined(self) -> Option<()> {
+        match self {
+            Value(ValueImpl::Simple(SimpleValue::Undefined)) => Some(()),
+            _ => None,
+        }
+    }
+}
+
+impl ValueImpl {
+    /// Return the major type for the [`ValueImpl`].
     pub fn type_label(&self) -> u8 {
         // TODO use enum discriminant instead when stable
         // https://github.com/rust-lang/rust/issues/60553
         match self {
-            Value::Unsigned(_) => 0,
-            Value::Negative(_) => 1,
-            Value::ByteString(_) => 2,
-            Value::TextString(_) => 3,
-            Value::Array(_) => 4,
-            Value::Map(_) => 5,
-            Value::Tag(_, _) => 6,
-            Value::Simple(_) => 7,
+            ValueImpl::Unsigned(_) => 0,
+            ValueImpl::Negative(_) => 1,
+            ValueImpl::ByteString(_) => 2,
+            ValueImpl::TextString(_) => 3,
+            ValueImpl::Array(_) => 4,
+            ValueImpl::Map(_) => 5,
+            ValueImpl::Tag(_, _) => 6,
+            ValueImpl::Simple(_) => 7,
         }
     }
 }
 
-impl Ord for Value {
-    fn cmp(&self, other: &Value) -> Ordering {
-        use super::values::Value::{
+impl Ord for ValueImpl {
+    fn cmp(&self, other: &ValueImpl) -> Ordering {
+        use super::values::ValueImpl::{
             Array, ByteString, Map, Negative, Simple, Tag, TextString, Unsigned,
         };
         let self_type_value = self.type_label();
@@ -156,16 +292,16 @@ impl Ord for Value {
     }
 }
 
-impl PartialOrd for Value {
-    fn partial_cmp(&self, other: &Value) -> Option<Ordering> {
+impl PartialOrd for ValueImpl {
+    fn partial_cmp(&self, other: &ValueImpl) -> Option<Ordering> {
         Some(self.cmp(other))
     }
 }
 
-impl Eq for Value {}
+impl Eq for ValueImpl {}
 
-impl PartialEq for Value {
-    fn eq(&self, other: &Value) -> bool {
+impl PartialEq for ValueImpl {
+    fn eq(&self, other: &ValueImpl) -> bool {
         self.cmp(other) == Ordering::Equal
     }
 }
@@ -184,8 +320,26 @@ impl SimpleValue {
 }
 
 impl From<u64> for Value {
-    fn from(unsigned: u64) -> Self {
-        Value::Unsigned(unsigned)
+    fn from(u: u64) -> Self {
+        Value::unsigned(u)
+    }
+}
+
+impl From<u32> for Value {
+    fn from(u: u32) -> Self {
+        Value::unsigned(u as u64)
+    }
+}
+
+impl From<u16> for Value {
+    fn from(u: u16) -> Self {
+        Value::unsigned(u as u64)
+    }
+}
+
+impl From<u8> for Value {
+    fn from(u: u8) -> Self {
+        Value::unsigned(u as u64)
     }
 }
 
@@ -201,39 +355,57 @@ impl From<i32> for Value {
     }
 }
 
+impl From<i16> for Value {
+    fn from(i: i16) -> Self {
+        Value::integer(i as i64)
+    }
+}
+
+impl From<i8> for Value {
+    fn from(i: i8) -> Self {
+        Value::integer(i as i64)
+    }
+}
+
 impl From<Vec<u8>> for Value {
     fn from(bytes: Vec<u8>) -> Self {
-        Value::ByteString(bytes)
+        Value(ValueImpl::ByteString(bytes))
     }
 }
 
 impl From<&[u8]> for Value {
     fn from(bytes: &[u8]) -> Self {
-        Value::ByteString(bytes.to_vec())
+        Value(ValueImpl::ByteString(bytes.to_vec()))
+    }
+}
+
+impl From<&[u8; 0]> for Value {
+    fn from(bytes: &[u8; 0]) -> Self {
+        Value(ValueImpl::ByteString(bytes.to_vec()))
     }
 }
 
 impl From<String> for Value {
     fn from(text: String) -> Self {
-        Value::TextString(text)
+        Value(ValueImpl::TextString(text))
     }
 }
 
 impl From<&str> for Value {
     fn from(text: &str) -> Self {
-        Value::TextString(text.to_string())
+        Value(ValueImpl::TextString(text.to_string()))
     }
 }
 
 impl From<Vec<Value>> for Value {
     fn from(array: Vec<Value>) -> Self {
-        Value::Array(array)
+        Value(ValueImpl::Array(array))
     }
 }
 
 impl From<Vec<(Value, Value)>> for Value {
     fn from(map: Vec<(Value, Value)>) -> Self {
-        Value::Map(map)
+        Value::map(map)
     }
 }
 
@@ -285,9 +457,209 @@ where
 #[cfg(test)]
 mod test {
     use super::*;
-    use crate::{cbor_array, cbor_bool, cbor_bytes, cbor_int, cbor_map, cbor_tagged, cbor_text};
+    use crate::{
+        cbor_array, cbor_bool, cbor_bytes, cbor_bytes_lit, cbor_int, cbor_map, cbor_null,
+        cbor_tagged, cbor_text, cbor_undefined, cbor_unsigned,
+    };
     use alloc::vec;
 
+    #[test]
+    #[should_panic]
+    fn test_duplicate_map_key() {
+        let _map = cbor_map! {
+            0 => "a",
+            -1 => "c",
+            b"a" => "e",
+            "c" => "g",
+            0 => "b",
+        };
+    }
+
+    #[test]
+    fn test_extract_unsigned() {
+        assert_eq!(cbor_int!(1).extract_unsigned(), Some(1));
+        assert_eq!(cbor_int!(-1).extract_unsigned(), None);
+        assert_eq!(cbor_bytes!(vec![]).extract_unsigned(), None);
+        assert_eq!(cbor_text!("").extract_unsigned(), None);
+        assert_eq!(cbor_array![].extract_unsigned(), None);
+        assert_eq!(cbor_map! {}.extract_unsigned(), None);
+        assert_eq!(cbor_tagged!(1, cbor_text!("s")).extract_unsigned(), None);
+        assert_eq!(cbor_bool!(false).extract_unsigned(), None);
+    }
+
+    #[test]
+    fn test_extract_unsigned_limits() {
+        assert_eq!(
+            cbor_unsigned!(core::u64::MAX).extract_unsigned(),
+            Some(core::u64::MAX)
+        );
+        assert_eq!(
+            cbor_unsigned!((core::i64::MAX as u64) + 1).extract_unsigned(),
+            Some((core::i64::MAX as u64) + 1)
+        );
+        assert_eq!(
+            cbor_int!(core::i64::MAX).extract_unsigned(),
+            Some(core::i64::MAX as u64)
+        );
+        assert_eq!(cbor_int!(123).extract_unsigned(), Some(123));
+        assert_eq!(cbor_int!(0).extract_unsigned(), Some(0));
+        assert_eq!(cbor_int!(-123).extract_unsigned(), None);
+        assert_eq!(cbor_int!(core::i64::MIN).extract_unsigned(), None);
+    }
+
+    #[test]
+    fn test_extract_integer() {
+        assert_eq!(cbor_int!(1).extract_integer(), Some(1));
+        assert_eq!(cbor_int!(-1).extract_integer(), Some(-1));
+        assert_eq!(cbor_bytes!(vec![]).extract_integer(), None);
+        assert_eq!(cbor_text!("").extract_integer(), None);
+        assert_eq!(cbor_array![].extract_integer(), None);
+        assert_eq!(cbor_map! {}.extract_integer(), None);
+        assert_eq!(cbor_tagged!(1, cbor_text!("s")).extract_integer(), None);
+        assert_eq!(cbor_bool!(false).extract_integer(), None);
+    }
+
+    #[test]
+    fn test_extract_integer_limits() {
+        assert_eq!(cbor_unsigned!(core::u64::MAX).extract_integer(), None);
+        assert_eq!(
+            cbor_unsigned!((core::i64::MAX as u64) + 1).extract_integer(),
+            None
+        );
+        assert_eq!(
+            cbor_int!(core::i64::MAX).extract_integer(),
+            Some(core::i64::MAX)
+        );
+        assert_eq!(cbor_int!(123).extract_integer(), Some(123));
+        assert_eq!(cbor_int!(0).extract_integer(), Some(0));
+        assert_eq!(cbor_int!(-123).extract_integer(), Some(-123));
+        assert_eq!(
+            cbor_int!(core::i64::MIN).extract_integer(),
+            Some(core::i64::MIN)
+        );
+    }
+
+    #[test]
+    fn test_extract_byte_string() {
+        assert_eq!(cbor_int!(1).extract_byte_string(), None);
+        assert_eq!(cbor_int!(-1).extract_byte_string(), None);
+        assert_eq!(cbor_bytes!(vec![]).extract_byte_string(), Some(Vec::new()));
+        assert_eq!(
+            cbor_bytes_lit!(b"bar").extract_byte_string(),
+            Some(b"bar".to_vec())
+        );
+        assert_eq!(cbor_text!("").extract_byte_string(), None);
+        assert_eq!(cbor_array![].extract_byte_string(), None);
+        assert_eq!(cbor_map! {}.extract_byte_string(), None);
+        assert_eq!(cbor_tagged!(1, cbor_text!("s")).extract_byte_string(), None);
+        assert_eq!(cbor_bool!(false).extract_byte_string(), None);
+    }
+
+    #[test]
+    fn test_extract_text_string() {
+        assert_eq!(cbor_int!(1).extract_text_string(), None);
+        assert_eq!(cbor_int!(-1).extract_text_string(), None);
+        assert_eq!(cbor_bytes!(vec![]).extract_text_string(), None);
+        assert_eq!(cbor_text!("").extract_text_string(), Some(String::new()));
+        assert_eq!(cbor_text!("s").extract_text_string(), Some("s".to_string()));
+        assert_eq!(cbor_array![].extract_text_string(), None);
+        assert_eq!(cbor_map! {}.extract_text_string(), None);
+        assert_eq!(cbor_tagged!(1, cbor_text!("s")).extract_text_string(), None);
+        assert_eq!(cbor_bool!(false).extract_text_string(), None);
+    }
+
+    #[test]
+    fn test_extract_array() {
+        assert_eq!(cbor_int!(1).extract_array(), None);
+        assert_eq!(cbor_int!(-1).extract_array(), None);
+        assert_eq!(cbor_bytes!(vec![]).extract_array(), None);
+        assert_eq!(cbor_text!("").extract_array(), None);
+        assert_eq!(cbor_array![].extract_array(), Some(Vec::new()));
+        assert_eq!(
+            cbor_array![cbor_int!(1)].extract_array(),
+            Some(vec![cbor_int!(1)])
+        );
+        assert_eq!(cbor_map! {}.extract_array(), None);
+        assert_eq!(cbor_tagged!(1, cbor_text!("s")).extract_array(), None);
+        assert_eq!(cbor_bool!(false).extract_array(), None);
+    }
+
+    #[test]
+    fn test_extract_map() {
+        assert_eq!(cbor_int!(1).extract_map(), None);
+        assert_eq!(cbor_int!(-1).extract_map(), None);
+        assert_eq!(cbor_bytes!(vec![]).extract_map(), None);
+        assert_eq!(cbor_text!("").extract_map(), None);
+        assert_eq!(cbor_array![].extract_map(), None);
+        assert_eq!(cbor_map! {}.extract_map(), Some(Vec::new()));
+        assert_eq!(
+            cbor_map! {0 => 1}.extract_map(),
+            Some(vec![(cbor_int!(0), cbor_int!(1))])
+        );
+        assert_eq!(cbor_tagged!(1, cbor_text!("s")).extract_map(), None);
+        assert_eq!(cbor_bool!(false).extract_map(), None);
+    }
+
+    #[test]
+    fn test_extract_tag() {
+        assert_eq!(cbor_int!(1).extract_tag(), None);
+        assert_eq!(cbor_int!(-1).extract_tag(), None);
+        assert_eq!(cbor_bytes!(vec![]).extract_tag(), None);
+        assert_eq!(cbor_text!("").extract_tag(), None);
+        assert_eq!(cbor_array![].extract_tag(), None);
+        assert_eq!(cbor_map! {}.extract_tag(), None);
+        assert_eq!(
+            cbor_tagged!(1, cbor_text!("s")).extract_tag(),
+            Some((1, cbor_text!("s")))
+        );
+        assert_eq!(cbor_bool!(false).extract_tag(), None);
+    }
+
+    #[test]
+    fn test_extract_bool() {
+        assert_eq!(cbor_int!(1).extract_bool(), None);
+        assert_eq!(cbor_int!(-1).extract_bool(), None);
+        assert_eq!(cbor_bytes!(vec![]).extract_bool(), None);
+        assert_eq!(cbor_text!("").extract_bool(), None);
+        assert_eq!(cbor_array![].extract_bool(), None);
+        assert_eq!(cbor_map! {}.extract_bool(), None);
+        assert_eq!(cbor_tagged!(1, cbor_text!("s")).extract_bool(), None);
+        assert_eq!(cbor_bool!(false).extract_bool(), Some(false));
+        assert_eq!(cbor_bool!(true).extract_bool(), Some(true));
+        assert_eq!(cbor_null!().extract_bool(), None);
+        assert_eq!(cbor_undefined!().extract_bool(), None);
+    }
+
+    #[test]
+    fn test_extract_null() {
+        assert_eq!(cbor_int!(1).extract_null(), None);
+        assert_eq!(cbor_int!(-1).extract_null(), None);
+        assert_eq!(cbor_bytes!(vec![]).extract_null(), None);
+        assert_eq!(cbor_text!("").extract_null(), None);
+        assert_eq!(cbor_array![].extract_null(), None);
+        assert_eq!(cbor_map! {}.extract_null(), None);
+        assert_eq!(cbor_tagged!(1, cbor_text!("s")).extract_null(), None);
+        assert_eq!(cbor_bool!(false).extract_null(), None);
+        assert_eq!(cbor_bool!(true).extract_null(), None);
+        assert_eq!(cbor_null!().extract_null(), Some(()));
+        assert_eq!(cbor_undefined!().extract_null(), None);
+    }
+
+    #[test]
+    fn test_extract_undefined() {
+        assert_eq!(cbor_int!(1).extract_undefined(), None);
+        assert_eq!(cbor_int!(-1).extract_undefined(), None);
+        assert_eq!(cbor_bytes!(vec![]).extract_undefined(), None);
+        assert_eq!(cbor_text!("").extract_undefined(), None);
+        assert_eq!(cbor_array![].extract_undefined(), None);
+        assert_eq!(cbor_map! {}.extract_undefined(), None);
+        assert_eq!(cbor_tagged!(1, cbor_text!("s")).extract_undefined(), None);
+        assert_eq!(cbor_bool!(false).extract_undefined(), None);
+        assert_eq!(cbor_bool!(true).extract_undefined(), None);
+        assert_eq!(cbor_null!().extract_undefined(), None);
+        assert_eq!(cbor_undefined!().extract_undefined(), Some(()));
+    }
+
     #[test]
     fn test_value_ordering() {
         assert!(cbor_int!(0) < cbor_int!(23));
@@ -329,12 +701,12 @@ mod test {
         assert!(cbor_map! {"" => 0} < cbor_map! {cbor_array![] => 0});
         assert!(cbor_map! {cbor_array![] => 0} < cbor_map! {cbor_map!{} => 0});
         assert!(cbor_map! {cbor_map!{} => 0} < cbor_map! {false => 0});
-        assert!(cbor_map! {false => 0} < cbor_map! {0 => 0, 0 => 0});
+        assert!(cbor_map! {false => 0} < cbor_map! {0 => 0, 1 => 0});
         assert!(cbor_map! {0 => 0} < cbor_tagged!(2, cbor_int!(0)));
-        assert!(cbor_map! {0 => 0, 0 => 0} < cbor_bool!(false));
+        assert!(cbor_map! {0 => 0, 1 => 0} < cbor_bool!(false));
         assert!(cbor_bool!(false) < cbor_bool!(true));
-        assert!(cbor_bool!(true) < Value::Simple(SimpleValue::NullValue));
-        assert!(Value::Simple(SimpleValue::NullValue) < Value::Simple(SimpleValue::Undefined));
+        assert!(cbor_bool!(true) < cbor_null!());
+        assert!(cbor_null!() < cbor_undefined!());
         assert!(cbor_tagged!(1, cbor_text!("s")) < cbor_tagged!(2, cbor_int!(0)));
         assert!(cbor_int!(1) < cbor_int!(-1));
         assert!(cbor_int!(1) < cbor_bytes!(vec![0x00]));

libraries/cbor/src/writer.rs

@@ -14,7 +14,7 @@
 
 //! Functionality for serializing CBOR values into bytes.
 
-use super::values::{Constants, Value};
+use super::values::{Constants, Value, ValueImpl};
 use alloc::vec::Vec;
 
 /// Possible errors from a serialization operation.
@@ -60,42 +60,36 @@ impl<'a> Writer<'a> {
         if remaining_depth.map_or(false, |d| d < 0) {
             return Err(EncoderError::TooMuchNesting);
         }
-        let type_label = value.type_label();
-        match value {
-            Value::Unsigned(unsigned) => self.start_item(type_label, unsigned),
-            Value::Negative(negative) => self.start_item(type_label, -(negative + 1) as u64),
-            Value::ByteString(byte_string) => {
+        let type_label = value.0.type_label();
+        match value.0 {
+            ValueImpl::Unsigned(unsigned) => self.start_item(type_label, unsigned),
+            ValueImpl::Negative(negative) => self.start_item(type_label, -(negative + 1) as u64),
+            ValueImpl::ByteString(byte_string) => {
                 self.start_item(type_label, byte_string.len() as u64);
                 self.encoded_cbor.extend(byte_string);
             }
-            Value::TextString(text_string) => {
+            ValueImpl::TextString(text_string) => {
                 self.start_item(type_label, text_string.len() as u64);
                 self.encoded_cbor.extend(text_string.into_bytes());
             }
-            Value::Array(array) => {
+            ValueImpl::Array(array) => {
                 self.start_item(type_label, array.len() as u64);
                 for el in array {
                     self.encode_cbor(el, remaining_depth.map(|d| d - 1))?;
                 }
             }
-            Value::Map(mut map) => {
-                map.sort_by(|a, b| a.0.cmp(&b.0));
-                let map_len = map.len();
-                map.dedup_by(|a, b| a.0.eq(&b.0));
-                if map_len != map.len() {
-                    return Err(EncoderError::DuplicateMapKey);
-                }
-                self.start_item(type_label, map_len as u64);
+            ValueImpl::Map(map) => {
+                self.start_item(type_label, map.len() as u64);
                 for (k, v) in map {
                     self.encode_cbor(k, remaining_depth.map(|d| d - 1))?;
                     self.encode_cbor(v, remaining_depth.map(|d| d - 1))?;
                 }
             }
-            Value::Tag(tag, inner_value) => {
+            ValueImpl::Tag(tag, inner_value) => {
                 self.start_item(type_label, tag);
                 self.encode_cbor(*inner_value, remaining_depth.map(|d| d - 1))?;
             }
-            Value::Simple(simple_value) => self.start_item(type_label, simple_value as u64),
+            ValueImpl::Simple(simple_value) => self.start_item(type_label, simple_value as u64),
         }
         Ok(())
     }
@@ -342,42 +336,6 @@ mod test {
         assert_eq!(write_return(sorted_map), write_return(unsorted_map));
     }
 
-    #[test]
-    fn test_write_map_duplicates() {
-        let duplicate0 = cbor_map! {
-            0 => "a",
-            -1 => "c",
-            b"a" => "e",
-            "c" => "g",
-            0 => "b",
-        };
-        assert_eq!(write_return(duplicate0), None);
-        let duplicate1 = cbor_map! {
-            0 => "a",
-            -1 => "c",
-            b"a" => "e",
-            "c" => "g",
-            -1 => "d",
-        };
-        assert_eq!(write_return(duplicate1), None);
-        let duplicate2 = cbor_map! {
-            0 => "a",
-            -1 => "c",
-            b"a" => "e",
-            "c" => "g",
-            b"a" => "f",
-        };
-        assert_eq!(write_return(duplicate2), None);
-        let duplicate3 = cbor_map! {
-            0 => "a",
-            -1 => "c",
-            b"a" => "e",
-            "c" => "g",
-            "c" => "h",
-        };
-        assert_eq!(write_return(duplicate3), None);
-    }
-
     #[test]
     fn test_write_map_with_array() {
         let value_map = cbor_map! {

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libraries/crypto/Cargo.toml

@@ -10,10 +10,8 @@ license = "Apache-2.0"
 edition = "2018"
 
 [dependencies]
-rng256 = { path = "../rng256" }
 arrayref = "0.3.6"
 subtle = { version = "2.2.3", default-features = false, features = ["nightly"] }
-dilithium = { path = "../../third_party/dilithium" }
 byteorder = { version = "1", default-features = false }
 hex = { version = "0.3.2", default-features = false, optional = true }
 ring = { version = "0.16.11", optional = true }
@@ -21,7 +19,8 @@ untrusted = { version = "0.7.0", optional = true }
 serde = { version = "1.0", optional = true, features = ["derive"] }
 serde_json = { version = "=1.0.69", optional = true }
 regex = { version = "1", optional = true }
+rand_core = "0.6.4"
+zeroize = { version = "1.5.7", features = ["derive"] }
 
 [features]
-std = ["hex", "ring", "rng256/std", "untrusted", "serde", "serde_json", "regex"]
-with_ctap1 = []
+std = ["hex", "ring", "untrusted", "serde", "serde_json", "regex", "rand_core/getrandom"]

libraries/crypto/src/aes256.rs

@@ -12,18 +12,29 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+//! A portable and naive textbook implementation of AES-256
+
 use super::util::{xor_block_16, Block16};
 use arrayref::{array_mut_ref, array_ref};
+use zeroize::Zeroize;
 
-/** A portable and naive textbook implementation of AES-256 **/
 type Word = [u8; 4];
 
-/** This structure caches the round keys, to avoid re-computing the key schedule for each block. **/
+/// Encryption key for AES256.
+///
+/// Never call zeroize explicitly, to not invalidate any invariants.
+#[derive(Zeroize)]
 pub struct EncryptionKey {
+    // This structure caches the round keys, to avoid re-computing the key schedule for each block.
     enc_round_keys: [Block16; 15],
 }
 
+/// Decryption key for AES256.
+///
+/// Never call zeroize explicitly, to not invalidate any invariants.
+#[derive(Zeroize)]
 pub struct DecryptionKey {
+    // This structure caches the round keys, to avoid re-computing the key schedule for each block.
     dec_round_keys: [Block16; 15],
 }
 

libraries/crypto/src/ec/exponent256.rs

@@ -14,11 +14,14 @@
 
 use super::int256::{Digit, Int256};
 use core::ops::Mul;
-use rng256::Rng256;
+use rand_core::RngCore;
 use subtle::{self, Choice, ConditionallySelectable, CtOption};
+use zeroize::Zeroize;
 
-// An exponent on the elliptic curve, that is an element modulo the curve order N.
-#[derive(Clone, Copy, Debug, PartialEq, Eq)]
+/// An exponent on the elliptic curve, that is an element modulo the curve order N.
+///
+/// Never call zeroize explicitly, to not invalidate any invariants.
+#[derive(Clone, Copy, Debug, PartialEq, Eq, Zeroize)]
 // TODO: remove this Default once https://github.com/dalek-cryptography/subtle/issues/63 is
 // resolved.
 #[derive(Default)]
@@ -90,8 +93,10 @@ impl Mul for &ExponentP256 {
     }
 }
 
-// A non-zero exponent on the elliptic curve.
-#[derive(Clone, Copy, Debug, PartialEq, Eq)]
+/// A non-zero exponent on the elliptic curve.
+///
+/// Never call zeroize explicitly, to not invalidate any invariants.
+#[derive(Clone, Copy, Debug, PartialEq, Eq, Zeroize)]
 // TODO: remove this Default once https://github.com/dalek-cryptography/subtle/issues/63 is
 // resolved.
 #[derive(Default)]
@@ -112,7 +117,7 @@ impl NonZeroExponentP256 {
     // Generates a uniformly distributed element 0 < k < N
     pub fn gen_uniform<R>(r: &mut R) -> NonZeroExponentP256
     where
-        R: Rng256,
+        R: RngCore,
     {
         loop {
             let x = Int256::gen_uniform_256(r);
@@ -293,57 +298,4 @@ pub mod test {
         assert_eq!(ONE.inv(), ONE);
         assert_eq!(N_MIN_1.inv(), N_MIN_1);
     }
-
-    /** RNG **/
-    // Mock rng that samples through a list of values, then panics.
-    struct StressTestingRng {
-        values: Vec<Int256>,
-        index: usize,
-    }
-
-    impl StressTestingRng {
-        pub fn new(values: Vec<Int256>) -> StressTestingRng {
-            StressTestingRng { values, index: 0 }
-        }
-    }
-
-    impl Rng256 for StressTestingRng {
-        // This function is unused, as we redefine gen_uniform_u32x8.
-        fn fill_bytes(&mut self, _buf: &mut [u8]) {
-            unreachable!()
-        }
-
-        // This function is unused, as we redefine gen_uniform_u32x8.
-        fn gen_uniform_u8x32(&mut self) -> [u8; 32] {
-            unreachable!()
-        }
-
-        fn gen_uniform_u32x8(&mut self) -> [u32; 8] {
-            let result = self.values[self.index].digits();
-            self.index += 1;
-            result
-        }
-    }
-
-    #[test]
-    fn test_uniform_non_zero_is_below_n() {
-        let mut rng = StressTestingRng::new(vec![
-            Int256::new([
-                0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
-                0xffffffff,
-            ]),
-            Int256::N,
-            N_MIN_1.to_int(),
-            Int256::N_MIN_2,
-        ]);
-
-        assert_eq!(NonZeroExponentP256::gen_uniform(&mut rng), N_MIN_1);
-    }
-
-    #[test]
-    fn test_uniform_n_is_above_zero() {
-        let mut rng = StressTestingRng::new(vec![Int256::ZERO]);
-
-        assert_eq!(NonZeroExponentP256::gen_uniform(&mut rng), ONE);
-    }
 }

libraries/crypto/src/ec/gfp256.rs

@@ -15,12 +15,16 @@
 use super::int256::{Digit, Int256};
 use core::ops::Mul;
 use subtle::Choice;
+use zeroize::Zeroize;
 
-// A field element on the elliptic curve, that is an element modulo the prime P.
-// This is the format used to serialize coordinates of points on the curve.
-// This implements enough methods to validate points and to convert them to/from the Montgomery
-// form, which is more convenient to operate on.
-#[derive(Clone, Copy, PartialEq, Eq)]
+/// A field element on the elliptic curve, that is an element modulo the prime P.
+///
+/// This is the format used to serialize coordinates of points on the curve.
+/// This implements enough methods to validate points and to convert them to/from the Montgomery
+/// form, which is more convenient to operate on.
+///
+/// Never call zeroize explicitly, to not invalidate any invariants.
+#[derive(Clone, Copy, PartialEq, Eq, Zeroize)]
 pub struct GFP256 {
     int: Int256,
 }

libraries/crypto/src/ec/int256.rs

@@ -17,8 +17,9 @@ use alloc::vec::Vec;
 use arrayref::{array_mut_ref, array_ref};
 use byteorder::{BigEndian, ByteOrder};
 use core::ops::{Add, AddAssign, Sub, SubAssign};
-use rng256::Rng256;
+use rand_core::RngCore;
 use subtle::{self, Choice, ConditionallySelectable, ConstantTimeEq};
+use zeroize::Zeroize;
 
 const BITS_PER_DIGIT: usize = 32;
 const BYTES_PER_DIGIT: usize = BITS_PER_DIGIT >> 3;
@@ -29,7 +30,10 @@ pub type Digit = u32;
 type DoubleDigit = u64;
 type SignedDoubleDigit = i64;
 
-#[derive(Clone, Copy, PartialEq, Eq)]
+/// Big integer implementation with 256 bits.
+///
+/// Never call zeroize explicitly, to not invalidate any invariants.
+#[derive(Clone, Copy, PartialEq, Eq, Zeroize)]
 // TODO: remove this Default once https://github.com/dalek-cryptography/subtle/issues/63 is
 // resolved.
 #[derive(Default)]
@@ -119,11 +123,13 @@ impl Int256 {
     // Generates a uniformly distributed integer 0 <= x < 2^256
     pub fn gen_uniform_256<R>(r: &mut R) -> Int256
     where
-        R: Rng256,
+        R: RngCore,
     {
-        Int256 {
-            digits: r.gen_uniform_u32x8(),
+        let mut digits = [0; NDIGITS];
+        for i in 0..NDIGITS {
+            digits[i] = r.next_u32();
         }
+        Int256 { digits }
     }
 
     /** Serialization **/

libraries/crypto/src/ec/montgomery.rs

@@ -17,13 +17,16 @@ use super::int256::Int256;
 use super::precomputed;
 use core::ops::{Add, Mul, Sub};
 use subtle::{Choice, ConditionallySelectable, ConstantTimeEq};
+use zeroize::Zeroize;
 
 pub const NLIMBS: usize = 9;
 pub const BOTTOM_28_BITS: u32 = 0x0fff_ffff;
 pub const BOTTOM_29_BITS: u32 = 0x1fff_ffff;
 
-/** Field element on the secp256r1 curve, represented in Montgomery form **/
-#[derive(Clone, Copy)]
+/// Field element on the secp256r1 curve, represented in Montgomery form.
+///
+/// Never call zeroize explicitly, to not invalidate any invariants.
+#[derive(Clone, Copy, Zeroize)]
 pub struct Montgomery {
     // The 9 limbs use 28 or 29 bits, alternatively: even limbs use 29 bits, odd limbs use 28 bits.
     // The Montgomery form stores a field element x as (x * 2^257) mod P.

libraries/crypto/src/ec/point.rs

@@ -21,11 +21,15 @@ use arrayref::array_mut_ref;
 use arrayref::array_ref;
 use core::ops::Add;
 use subtle::{Choice, ConditionallySelectable, ConstantTimeEq};
+use zeroize::Zeroize;
 
-// A point on the elliptic curve is represented by two field elements.
-// The "direct" representation with GFP256 (integer modulo p) is used for serialization of public
-// keys.
-#[derive(Clone, Copy, PartialEq, Eq)]
+/// A point on the elliptic curve, represented by two field elements.
+///
+/// The "direct" representation with GFP256 (integer modulo p) is used for serialization of public
+/// keys.
+///
+/// Never call zeroize explicitly, to not invalidate any invariants.
+#[derive(Clone, Copy, Zeroize)]
 pub struct PointP256 {
     x: GFP256,
     y: GFP256,
@@ -128,12 +132,15 @@ impl PointP256 {
     }
 }
 
-// A point on the elliptic curve in projective form.
-// This uses Montgomery representation for field elements.
-// This is in projective coordinates, i.e. it represents the point { x: x / z, y: y / z }.
-// This representation is more convenient to implement complete formulas for elliptic curve
-// arithmetic.
-#[derive(Clone, Copy)]
+/// A point on the elliptic curve in projective form.
+///
+/// This uses Montgomery representation for field elements.
+/// This is in projective coordinates, i.e. it represents the point { x: x / z, y: y / z }.
+/// This representation is more convenient to implement complete formulas for elliptic curve
+/// arithmetic.
+///
+/// Never call zeroize explicitly, to not invalidate any invariants.
+#[derive(Clone, Copy, Zeroize)]
 pub struct PointProjective {
     x: Montgomery,
     y: Montgomery,
@@ -150,8 +157,10 @@ impl ConditionallySelectable for PointProjective {
     }
 }
 
-// Equivalent to PointProjective { x, y, z: 1 }
-#[derive(Clone, Copy)]
+/// Equivalent to PointProjective { x, y, z: 1 }
+///
+/// Never call zeroize explicitly, to not invalidate any invariants.
+#[derive(Clone, Copy, Zeroize)]
 pub struct PointAffine {
     x: Montgomery,
     y: Montgomery,
@@ -548,6 +557,12 @@ impl core::fmt::Debug for PointP256 {
     }
 }
 
+impl PartialEq for PointP256 {
+    fn eq(&self, other: &PointP256) -> bool {
+        self.x == other.x && self.y == other.y
+    }
+}
+
 #[cfg(test)]
 pub mod test {
     use super::*;

libraries/crypto/src/ecdh.rs

@@ -16,15 +16,23 @@ use super::ec::exponent256::NonZeroExponentP256;
 use super::ec::int256;
 use super::ec::int256::Int256;
 use super::ec::point::PointP256;
-use rng256::Rng256;
+use rand_core::RngCore;
+use zeroize::Zeroize;
 
 pub const NBYTES: usize = int256::NBYTES;
 
+/// A private key for ECDH.
+///
+/// Never call zeroize explicitly, to not invalidate any invariants.
+#[derive(Zeroize)]
 pub struct SecKey {
     a: NonZeroExponentP256,
 }
 
-#[derive(Clone, Debug, PartialEq)]
+/// A public key for ECDH.
+///
+/// Never call zeroize explicitly, to not invalidate any invariants.
+#[derive(Clone, Debug, PartialEq, Zeroize)]
 pub struct PubKey {
     p: PointP256,
 }
@@ -32,7 +40,7 @@ pub struct PubKey {
 impl SecKey {
     pub fn gensk<R>(rng: &mut R) -> SecKey
     where
-        R: Rng256,
+        R: RngCore,
     {
         SecKey {
             a: NonZeroExponentP256::gen_uniform(rng),
@@ -70,6 +78,17 @@ impl SecKey {
         p.getx().to_int().to_bin(&mut x);
         x
     }
+
+    /// Creates a private key from the exponent's bytes, or None if checks fail.
+    pub fn from_bytes(bytes: &[u8; 32]) -> Option<SecKey> {
+        let a = NonZeroExponentP256::from_int_checked(Int256::from_bin(bytes));
+        // The branching here is fine because all this reveals is whether the key was invalid.
+        if bool::from(a.is_none()) {
+            return None;
+        }
+        let a = a.unwrap();
+        Some(SecKey { a })
+    }
 }
 
 impl PubKey {
@@ -99,7 +118,7 @@ impl PubKey {
 #[cfg(test)]
 mod test {
     use super::*;
-    use rng256::ThreadRng256;
+    use rand_core::OsRng;
 
     // Run more test iterations in release mode, as the code should be faster.
     #[cfg(not(debug_assertions))]
@@ -110,7 +129,7 @@ mod test {
     /** Test that key generation creates valid keys **/
     #[test]
     fn test_gen_pub_is_valid_random() {
-        let mut rng = ThreadRng256 {};
+        let mut rng = OsRng::default();
 
         for _ in 0..ITERATIONS {
             let sk = SecKey::gensk(&mut rng);
@@ -122,7 +141,7 @@ mod test {
     /** Test that the exchanged key is the same on both sides **/
     #[test]
     fn test_exchange_x_is_symmetric() {
-        let mut rng = ThreadRng256 {};
+        let mut rng = OsRng::default();
 
         for _ in 0..ITERATIONS {
             let sk_a = SecKey::gensk(&mut rng);
@@ -135,7 +154,7 @@ mod test {
 
     #[test]
     fn test_exchange_x_bytes_is_symmetric() {
-        let mut rng = ThreadRng256 {};
+        let mut rng = OsRng::default();
 
         for _ in 0..ITERATIONS {
             let sk_a = SecKey::gensk(&mut rng);

libraries/crypto/src/ecdsa.rs

@@ -16,30 +16,37 @@ use super::ec::exponent256::{ExponentP256, NonZeroExponentP256};
 use super::ec::int256;
 use super::ec::int256::Int256;
 use super::ec::point::PointP256;
-use super::hmac::hmac_256;
 use super::Hash256;
 use alloc::vec;
 use alloc::vec::Vec;
-#[cfg(feature = "std")]
-use arrayref::array_mut_ref;
-use arrayref::{array_ref, mut_array_refs};
+use arrayref::{array_mut_ref, array_ref, mut_array_refs};
 use core::marker::PhantomData;
-use rng256::Rng256;
+use rand_core::RngCore;
+use zeroize::Zeroize;
 
 pub const NBYTES: usize = int256::NBYTES;
 
-#[derive(Clone, Debug, PartialEq, Eq)]
+/// A private key for ECDSA.
+///
+/// Never call zeroize explicitly, to not invalidate any invariants.
+#[derive(Clone, Debug, PartialEq, Eq, Zeroize)]
 pub struct SecKey {
     k: NonZeroExponentP256,
 }
 
-#[derive(Clone, Debug, PartialEq, Eq)]
+/// An ECDSA signature.
+///
+/// Never call zeroize explicitly, to not invalidate any invariants.
+#[derive(Zeroize)]
 pub struct Signature {
     r: NonZeroExponentP256,
     s: NonZeroExponentP256,
 }
 
-#[derive(Clone, Debug, PartialEq, Eq)]
+/// A public key for ECDSA.
+///
+/// Never call zeroize explicitly, to not invalidate any invariants.
+#[derive(Clone, Zeroize)]
 pub struct PubKey {
     p: PointP256,
 }
@@ -47,7 +54,7 @@ pub struct PubKey {
 impl SecKey {
     pub fn gensk<R>(rng: &mut R) -> SecKey
     where
-        R: Rng256,
+        R: RngCore,
     {
         SecKey {
             k: NonZeroExponentP256::gen_uniform(rng),
@@ -68,7 +75,7 @@ impl SecKey {
     pub fn sign_rng<H, R>(&self, msg: &[u8], rng: &mut R) -> Signature
     where
         H: Hash256,
-        R: Rng256,
+        R: RngCore,
     {
         let m = ExponentP256::modn(Int256::from_bin(&H::hash(msg)));
 
@@ -211,7 +218,6 @@ impl Signature {
         Some(Signature { r, s })
     }
 
-    #[cfg(feature = "std")]
     pub fn to_bytes(&self, bytes: &mut [u8; Signature::BYTES_LENGTH]) {
         self.r
             .to_int()
@@ -223,9 +229,6 @@ impl Signature {
 }
 
 impl PubKey {
-    #[cfg(feature = "with_ctap1")]
-    const UNCOMPRESSED_LENGTH: usize = 1 + 2 * int256::NBYTES;
-
     /// Creates a new PubKey from its coordinates on the elliptic curve.
     pub fn from_coordinates(x: &[u8; NBYTES], y: &[u8; NBYTES]) -> Option<PubKey> {
         PointP256::new_checked_vartime(Int256::from_bin(x), Int256::from_bin(y))
@@ -241,20 +244,6 @@ impl PubKey {
         self.p.to_bytes_uncompressed(bytes);
     }
 
-    #[cfg(feature = "with_ctap1")]
-    pub fn to_uncompressed(&self) -> [u8; PubKey::UNCOMPRESSED_LENGTH] {
-        // Formatting according to:
-        // https://tools.ietf.org/id/draft-jivsov-ecc-compact-05.html#overview
-        const B0_BYTE_MARKER: u8 = 0x04;
-        let mut representation = [0; PubKey::UNCOMPRESSED_LENGTH];
-        let (marker, x, y) =
-            mut_array_refs![&mut representation, 1, int256::NBYTES, int256::NBYTES];
-        marker[0] = B0_BYTE_MARKER;
-        self.p.getx().to_int().to_bin(x);
-        self.p.gety().to_int().to_bin(y);
-        representation
-    }
-
     /// Writes the coordinates into the passed in arrays.
     pub fn to_coordinates(&self, x: &mut [u8; NBYTES], y: &mut [u8; NBYTES]) {
         self.p.getx().to_int().to_bin(x);
@@ -277,7 +266,6 @@ impl PubKey {
         ExponentP256::modn(u.to_int()) == *sign.r.as_exponent()
     }
 
-    #[cfg(feature = "std")]
     pub fn verify_vartime<H>(&self, msg: &[u8], sign: &Signature) -> bool
     where
         H: Hash256,
@@ -312,15 +300,15 @@ where
         Int256::to_bin(&sk.k.to_int(), contents_k);
         Int256::to_bin(&Int256::from_bin(&h1).modd(&Int256::N), contents_h1);
 
-        let k = hmac_256::<H>(&k, &contents);
-        let v = hmac_256::<H>(&k, &v);
+        let k = H::hmac(&k, &contents);
+        let v = H::hmac(&k, &v);
 
         let (contents_v, marker, _) = mut_array_refs![&mut contents, 32, 1, 64];
         contents_v.copy_from_slice(&v);
         marker[0] = 0x01;
 
-        let k = hmac_256::<H>(&k, &contents);
-        let v = hmac_256::<H>(&k, &v);
+        let k = H::hmac(&k, &contents);
+        let v = H::hmac(&k, &v);
 
         Rfc6979 {
             k,
@@ -332,14 +320,14 @@ where
     fn next(&mut self) -> Int256 {
         // Note: at this step, the logic from RFC 6979 is simplified, because the HMAC produces 256
         // bits and we need 256 bits.
-        let t = hmac_256::<H>(&self.k, &self.v);
+        let t = H::hmac(&self.k, &self.v);
         let result = Int256::from_bin(&t);
 
         let mut v1 = [0; 33];
         v1[..32].copy_from_slice(&self.v);
         v1[32] = 0x00;
-        self.k = hmac_256::<H>(&self.k, &v1);
-        self.v = hmac_256::<H>(&self.k, &self.v);
+        self.k = H::hmac(&self.k, &v1);
+        self.v = H::hmac(&self.k, &self.v);
 
         result
     }
@@ -349,7 +337,7 @@ where
 mod test {
     use super::super::sha256::Sha256;
     use super::*;
-    use rng256::ThreadRng256;
+    use rand_core::OsRng;
 
     // Run more test iterations in release mode, as the code should be faster.
     #[cfg(not(debug_assertions))]
@@ -357,10 +345,16 @@ mod test {
     #[cfg(debug_assertions)]
     const ITERATIONS: u32 = 500;
 
+    fn gen_random_message(rng: &mut impl RngCore) -> [u8; 32] {
+        let mut bytes = [0; 32];
+        rng.fill_bytes(&mut bytes);
+        bytes
+    }
+
     /** Test that key generation creates valid keys **/
     #[test]
     fn test_genpk_is_valid_random() {
-        let mut rng = ThreadRng256 {};
+        let mut rng = OsRng::default();
 
         for _ in 0..ITERATIONS {
             let sk = SecKey::gensk(&mut rng);
@@ -372,7 +366,7 @@ mod test {
     /** Serialization **/
     #[test]
     fn test_seckey_to_bytes_from_bytes() {
-        let mut rng = ThreadRng256 {};
+        let mut rng = OsRng::default();
 
         for _ in 0..ITERATIONS {
             let sk = SecKey::gensk(&mut rng);
@@ -463,10 +457,10 @@ mod test {
     // Test that signed message hashes are correctly verified.
     #[test]
     fn test_sign_rfc6979_verify_hash_random() {
-        let mut rng = ThreadRng256 {};
+        let mut rng = OsRng::default();
 
         for _ in 0..ITERATIONS {
-            let msg = rng.gen_uniform_u8x32();
+            let msg = gen_random_message(&mut rng);
             let sk = SecKey::gensk(&mut rng);
             let pk = sk.genpk();
             let sign = sk.sign_rfc6979::<Sha256>(&msg);
@@ -478,10 +472,10 @@ mod test {
     // Test that signed messages are correctly verified.
     #[test]
     fn test_sign_rfc6979_verify_random() {
-        let mut rng = ThreadRng256 {};
+        let mut rng = OsRng::default();
 
         for _ in 0..ITERATIONS {
-            let msg = rng.gen_uniform_u8x32();
+            let msg = gen_random_message(&mut rng);
             let sk = SecKey::gensk(&mut rng);
             let pk = sk.genpk();
             let sign = sk.sign_rfc6979::<Sha256>(&msg);
@@ -492,10 +486,10 @@ mod test {
     // Test that signed messages are correctly verified.
     #[test]
     fn test_sign_verify_random() {
-        let mut rng = ThreadRng256 {};
+        let mut rng = OsRng::default();
 
         for _ in 0..ITERATIONS {
-            let msg = rng.gen_uniform_u8x32();
+            let msg = gen_random_message(&mut rng);
             let sk = SecKey::gensk(&mut rng);
             let pk = sk.genpk();
             let sign = sk.sign_rng::<Sha256, _>(&msg, &mut rng);
@@ -580,10 +574,10 @@ mod test {
     fn test_self_sign_ring_verify() {
         use ring::signature::VerificationAlgorithm;
 
-        let mut rng = ThreadRng256 {};
+        let mut rng = OsRng::default();
 
         for _ in 0..ITERATIONS {
-            let msg_bytes = rng.gen_uniform_u8x32();
+            let msg_bytes = gen_random_message(&mut rng);
             let sk = SecKey::gensk(&mut rng);
             let pk = sk.genpk();
             let sign = sk.sign_rng::<Sha256, _>(&msg_bytes, &mut rng);

libraries/crypto/src/hkdf.rs

@@ -17,6 +17,27 @@ use super::Hash256;
 
 const HASH_SIZE: usize = 32;
 
+/// Computes the HKDF with the given salt and 256 bit (one block) output.
+///
+/// # Arguments
+///
+/// * `ikm` - Input keying material
+/// * `salt` - Byte string that acts as a key
+/// * `info` - Optional context and application specific information
+///
+/// This implementation is equivalent to a standard HKD, with `salt` fixed at a length of
+/// 32 byte and the output length l as 32.
+pub fn hkdf_256<H>(ikm: &[u8], salt: &[u8; HASH_SIZE], info: &[u8], okm: &mut [u8; HASH_SIZE])
+where
+    H: Hash256,
+{
+    let prk = H::hmac(salt, ikm);
+    // l is implicitly the block size, so we iterate exactly once.
+    let mut t = info.to_vec();
+    t.push(1);
+    hmac_256::<H>(&prk, t.as_slice(), okm);
+}
+
 /// Computes the HKDF with empty salt and 256 bit (one block) output.
 ///
 /// # Arguments
@@ -26,16 +47,12 @@ const HASH_SIZE: usize = 32;
 ///
 /// This implementation is equivalent to the below hkdf, with `salt` set to the
 /// default block of zeros and the output length l as 32.
-pub fn hkdf_empty_salt_256<H>(ikm: &[u8], info: &[u8]) -> [u8; HASH_SIZE]
+pub fn hkdf_empty_salt_256<H>(ikm: &[u8], info: &[u8], okm: &mut [u8; HASH_SIZE])
 where
     H: Hash256,
 {
     // Salt is a zero block here.
-    let prk = hmac_256::<H>(&[0; HASH_SIZE], ikm);
-    // l is implicitly the block size, so we iterate exactly once.
-    let mut t = info.to_vec();
-    t.push(1);
-    hmac_256::<H>(&prk, t.as_slice())
+    hkdf_256::<H>(ikm, &[0; HASH_SIZE], info, okm);
 }
 
 #[cfg(test)]
@@ -49,32 +66,51 @@ mod test {
         // Test vectors generated by pycryptodome using:
         // HKDF(b'0', 32, b'', SHA256, context=b'\x00').hex()
         let test_okms = [
-            hex::decode("f9be72116cb97f41828210289caafeabde1f3dfb9723bf43538ab18f3666783a")
-                .unwrap(),
-            hex::decode("f50f964f5b94d62fd1da9356ab8662b0a0f5b8e36e277178b69b6ffecf50cf44")
-                .unwrap(),
-            hex::decode("fc8772ceb5592d67442dcb4353cdd28519e82d6e55b4cf664b5685252c2d2998")
-                .unwrap(),
-            hex::decode("62831b924839a180f53be5461eeea1b89dc21779f50142b5a54df0f0cc86d61a")
-                .unwrap(),
-            hex::decode("6991f00a12946a4e3b8315cdcf0132c2ca508fd17b769f08d1454d92d33733e0")
-                .unwrap(),
-            hex::decode("0f9bb7dddd1ec61f91d8c4f5369b5870f9d44c4ceabccca1b83f06fec115e4e3")
-                .unwrap(),
-            hex::decode("235367e2ab6cca2aba1a666825458dba6b272a215a2537c05feebe4b80dab709")
-                .unwrap(),
-            hex::decode("96e8edad661da48d1a133b38c255d33e05555bc9aa442579dea1cd8d8b8d2aef")
-                .unwrap(),
+            "f9be72116cb97f41828210289caafeabde1f3dfb9723bf43538ab18f3666783a",
+            "f50f964f5b94d62fd1da9356ab8662b0a0f5b8e36e277178b69b6ffecf50cf44",
+            "fc8772ceb5592d67442dcb4353cdd28519e82d6e55b4cf664b5685252c2d2998",
+            "62831b924839a180f53be5461eeea1b89dc21779f50142b5a54df0f0cc86d61a",
+            "6991f00a12946a4e3b8315cdcf0132c2ca508fd17b769f08d1454d92d33733e0",
+            "0f9bb7dddd1ec61f91d8c4f5369b5870f9d44c4ceabccca1b83f06fec115e4e3",
+            "235367e2ab6cca2aba1a666825458dba6b272a215a2537c05feebe4b80dab709",
+            "96e8edad661da48d1a133b38c255d33e05555bc9aa442579dea1cd8d8b8d2aef",
         ];
         for (i, okm) in test_okms.iter().enumerate() {
             // String of number i.
             let ikm = i.to_string();
             // Byte i.
             let info = [i as u8];
-            assert_eq!(
-                &hkdf_empty_salt_256::<Sha256>(&ikm.as_bytes(), &info[..]),
-                array_ref!(okm, 0, 32)
-            );
+            let okm = hex::decode(okm).unwrap();
+            let mut output = [0; HASH_SIZE];
+            hkdf_empty_salt_256::<Sha256>(&ikm.as_bytes(), &info[..], &mut output);
+            assert_eq!(&output, array_ref!(okm, 0, HASH_SIZE));
+        }
+    }
+
+    #[test]
+    fn test_hkdf_256_sha256_vectors() {
+        // Test vectors generated as above, but with salt:
+        let test_okms = [
+            "f9be72116cb97f41828210289caafeabde1f3dfb9723bf43538ab18f3666783a",
+            "a2480a09c7349d76e459f98a8259da40544bfbd2930d357a0f3250ade0acf941",
+            "3904f7bf3615df9512fc6b1af651ed69b43f7fad424f9c718aaab63f377a36b9",
+            "a0027dcffb27d356317199c6e65f153a9286ba114aee2d3cf45bdba83cb7c065",
+            "786d1f89f54668bac443cc6a8887c95d6fbde07702cb4c16d76c452e87c50f79",
+            "8e9a5bdf362c5aec2c31a742dfebd0b7b56e16ab8408d9d0609a4fad06446875",
+            "4a35d3d7c80ff4fab65f7e30d6b305fc7bb39ffe905aabedd6593354f86177b6",
+            "b1121deabd8b4308f3805cda8af991ee976bd8e413bcb6a8dd3fc26ebe2312d2",
+        ];
+        for (i, okm) in test_okms.iter().enumerate() {
+            // String of number i.
+            let ikm = i.to_string();
+            // Bytestring of byte i.
+            let salt = [i as u8; 32];
+            // Byte i.
+            let info = [i as u8];
+            let okm = hex::decode(okm).unwrap();
+            let mut output = [0; HASH_SIZE];
+            hkdf_256::<Sha256>(&ikm.as_bytes(), &salt, &info[..], &mut output);
+            assert_eq!(&output, array_ref!(okm, 0, HASH_SIZE));
         }
     }
 }

libraries/crypto/src/hmac.rs

@@ -24,7 +24,8 @@ pub fn verify_hmac_256<H>(key: &[u8; KEY_SIZE], contents: &[u8], mac: &[u8; HASH
 where
     H: Hash256,
 {
-    let expected_mac = hmac_256::<H>(key, contents);
+    let mut expected_mac = [0; HASH_SIZE];
+    hmac_256::<H>(key, contents, &mut expected_mac);
     bool::from(expected_mac.ct_eq(mac))
 }
 
@@ -38,19 +39,23 @@ pub fn verify_hmac_256_first_128bits<H>(
 where
     H: Hash256,
 {
-    let expected_mac = hmac_256::<H>(key, contents);
+    let mut expected_mac = [0; HASH_SIZE];
+    hmac_256::<H>(key, contents, &mut expected_mac);
     bool::from(array_ref![expected_mac, 0, 16].ct_eq(pin))
 }
 
-pub fn hmac_256<H>(key: &[u8; KEY_SIZE], contents: &[u8]) -> [u8; HASH_SIZE]
+pub fn hmac_256<H>(key: &[u8; KEY_SIZE], contents: &[u8], output: &mut [u8; HASH_SIZE])
 where
     H: Hash256,
 {
-    H::hmac(key, contents)
+    H::hmac_mut(key, contents, output)
 }
 
-pub(crate) fn software_hmac_256<H>(key: &[u8; KEY_SIZE], contents: &[u8]) -> [u8; HASH_SIZE]
-where
+pub(crate) fn software_hmac_256<H>(
+    key: &[u8; KEY_SIZE],
+    contents: &[u8],
+    output: &mut [u8; HASH_SIZE],
+) where
     H: Hash256,
 {
     let mut ipad: [u8; BLOCK_SIZE] = [0x36; BLOCK_SIZE];
@@ -64,13 +69,13 @@ where
     let mut ihasher = H::new();
     ihasher.update(&ipad);
     ihasher.update(contents);
-    let ihash = ihasher.finalize();
+    let mut ihash = [0; HASH_SIZE];
+    ihasher.finalize(&mut ihash);
 
     let mut ohasher = H::new();
     ohasher.update(&opad);
     ohasher.update(&ihash);
-
-    ohasher.finalize()
+    ohasher.finalize(output);
 }
 
 fn xor_pads(ipad: &mut [u8; BLOCK_SIZE], opad: &mut [u8; BLOCK_SIZE], key: &[u8; KEY_SIZE]) {
@@ -91,7 +96,8 @@ mod test {
         for len in 0..128 {
             let key = [0; KEY_SIZE];
             let contents = vec![0; len];
-            let mac = hmac_256::<Sha256>(&key, &contents);
+            let mut mac = [0; HASH_SIZE];
+            hmac_256::<Sha256>(&key, &contents, &mut mac);
             assert!(verify_hmac_256::<Sha256>(&key, &contents, &mac));
         }
     }
@@ -102,7 +108,8 @@ mod test {
         for len in 0..128 {
             let key = [0; KEY_SIZE];
             let contents = vec![0; len];
-            let mac = hmac_256::<Sha256>(&key, &contents);
+            let mut mac = [0; HASH_SIZE];
+            hmac_256::<Sha256>(&key, &contents, &mut mac);
 
             // Check that invalid MACs don't verify, by changing any byte of the valid MAC.
             for i in 0..HASH_SIZE {
@@ -116,14 +123,21 @@ mod test {
     #[test]
     fn test_hmac_sha256_examples() {
         let key = [0; KEY_SIZE];
+        let mut mac = [0; HASH_SIZE];
+        hmac_256::<Sha256>(&key, &[], &mut mac);
         assert_eq!(
-            hmac_256::<Sha256>(&key, &[]),
+            mac,
             hex::decode("b613679a0814d9ec772f95d778c35fc5ff1697c493715653c6c712144292c5ad")
                 .unwrap()
                 .as_slice()
         );
+        hmac_256::<Sha256>(
+            &key,
+            b"The quick brown fox jumps over the lazy dog",
+            &mut mac,
+        );
         assert_eq!(
-            hmac_256::<Sha256>(&key, b"The quick brown fox jumps over the lazy dog"),
+            mac,
             hex::decode("fb011e6154a19b9a4c767373c305275a5a69e8b68b0b4c9200c383dced19a416")
                 .unwrap()
                 .as_slice()
@@ -274,11 +288,10 @@ mod test {
 
         let mut input = Vec::new();
         let key = [b'A'; KEY_SIZE];
+        let mut mac = [0; HASH_SIZE];
         for i in 0..128 {
-            assert_eq!(
-                hmac_256::<Sha256>(&key, &input),
-                hex::decode(hashes[i] as &[u8]).unwrap().as_slice()
-            );
+            hmac_256::<Sha256>(&key, &input, &mut mac);
+            assert_eq!(mac, hex::decode(hashes[i] as &[u8]).unwrap().as_slice());
             input.push(b'A');
         }
     }

libraries/crypto/src/hybrid.rs

@@ -1,246 +0,0 @@
-// Copyright 2021-2022 Google LLC
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-use super::ecdsa;
-use alloc::vec::Vec;
-
-// A label generated uniformly at random from the output space of SHA256.
-const LABEL: [u8; 32] = [
-    43, 253, 32, 250, 19, 51, 24, 237, 138, 49, 47, 182, 4, 194, 133, 183, 177, 218, 115, 58, 92,
-    117, 45, 172, 156, 5, 214, 176, 248, 103, 55, 216,
-];
-
-#[derive(Clone, Debug, PartialEq, Eq)]
-pub struct SecKey {
-    dilithium_seed: [u8; dilithium::params::SEEDBYTES],
-    ecdsa_sk: ecdsa::SecKey,
-}
-
-#[derive(Clone, Debug, PartialEq, Eq)]
-pub struct PubKey {
-    pub dilithium_pk: dilithium::sign::PubKey,
-    pub ecdsa_pk: ecdsa::PubKey,
-}
-
-#[derive(Clone, Debug, PartialEq, Eq)]
-pub struct Signature {
-    pub dilithium_sign: Vec<u8>,
-    pub ecdsa_sign: ecdsa::Signature,
-}
-
-fn ecdsa_input(msg: &[u8]) -> Vec<u8> {
-    let mut input = LABEL.to_vec();
-    input.extend(msg);
-    return input;
-}
-
-fn dilithium_input(msg: &[u8], ecdsa_sign: &ecdsa::Signature) -> Vec<u8> {
-    let mut input = LABEL.to_vec();
-    input.extend(msg);
-    input.extend(ecdsa_sign.to_asn1_der());
-    return input;
-}
-
-impl SecKey {
-    pub const BYTES_LENGTH: usize = 32 + dilithium::params::SEEDBYTES;
-    pub fn gensk<R>(rng: &mut R) -> SecKey
-    where
-        R: rng256::Rng256,
-    {
-        let mut seed = [0u8; dilithium::params::SEEDBYTES];
-        rng.fill_bytes(&mut seed);
-        SecKey {
-            dilithium_seed: seed,
-            ecdsa_sk: ecdsa::SecKey::gensk(rng),
-        }
-    }
-
-    pub fn gensk_with_pk<R>(rng: &mut R) -> (SecKey, PubKey)
-    where
-        R: rng256::Rng256,
-    {
-        let mut seed = [0u8; dilithium::params::SEEDBYTES];
-        rng.fill_bytes(&mut seed);
-        let (_, dilithium_pk) = dilithium::sign::SecKey::gensk_with_pk_from_seed(&seed);
-        let ecdsa_sk = ecdsa::SecKey::gensk(rng);
-        let ecdsa_pk = ecdsa_sk.genpk();
-        let sk = SecKey {
-            dilithium_seed: seed,
-            ecdsa_sk,
-        };
-        let pk = PubKey {
-            dilithium_pk,
-            ecdsa_pk,
-        };
-        (sk, pk)
-    }
-
-    pub fn genpk(&self) -> PubKey {
-        let (_, dilithium_pk) =
-            dilithium::sign::SecKey::gensk_with_pk_from_seed(&self.dilithium_seed);
-        PubKey {
-            dilithium_pk,
-            ecdsa_pk: self.ecdsa_sk.genpk(),
-        }
-    }
-
-    pub fn sign_rfc6979<H>(&self, msg: &[u8]) -> Signature
-    where
-        H: super::Hash256 + super::HashBlockSize64Bytes,
-    {
-        let ecdsa_sign = self.ecdsa_sk.sign_rfc6979::<H>(&ecdsa_input(&msg));
-        let dilithium_sk = dilithium::sign::SecKey::gensk_from_seed(&self.dilithium_seed);
-        // This wastes some stack, we could revert the Dilithium API to take a &mut [u8].
-        let dilithium_sign = dilithium_sk
-            .sign(&dilithium_input(&msg, &ecdsa_sign))
-            .to_vec();
-
-        return Signature {
-            ecdsa_sign,
-            dilithium_sign,
-        };
-    }
-
-    pub fn from_bytes(bytes: &[u8; SecKey::BYTES_LENGTH]) -> Option<SecKey> {
-        let ecdsa_bytes = array_ref!(bytes, 0, 32);
-        let ecdsa_sk = ecdsa::SecKey::from_bytes(&ecdsa_bytes)?;
-
-        let dilithium_seed = array_ref!(bytes, 32, dilithium::params::SEEDBYTES).clone();
-
-        return Some(SecKey {
-            ecdsa_sk,
-            dilithium_seed,
-        });
-    }
-
-    pub fn to_bytes(&self, bytes: &mut [u8; SecKey::BYTES_LENGTH]) {
-        let mut ecdsa_bytes = array_mut_ref!(bytes, 0, 32);
-        self.ecdsa_sk.to_bytes(&mut ecdsa_bytes);
-        let dilithium_bytes = array_mut_ref!(bytes, 32, dilithium::params::SEEDBYTES);
-        dilithium_bytes.copy_from_slice(&self.dilithium_seed);
-    }
-}
-
-impl PubKey {
-    pub const BYTES_LENGTH: usize = 2 * ecdsa::NBYTES + dilithium::params::PK_SIZE_PACKED;
-
-    pub fn from_bytes(bytes: &[u8; PubKey::BYTES_LENGTH]) -> Option<PubKey> {
-        let ecdsa_x_bytes = array_ref!(bytes, 0, ecdsa::NBYTES);
-        let ecdsa_y_bytes = array_ref!(bytes, ecdsa::NBYTES, ecdsa::NBYTES);
-
-        let ecdsa_pk = ecdsa::PubKey::from_coordinates(&ecdsa_x_bytes, &ecdsa_y_bytes)?;
-
-        let dilithium_bytes = array_ref!(
-            bytes,
-            ecdsa::NBYTES + ecdsa::NBYTES,
-            dilithium::params::PK_SIZE_PACKED
-        )
-        .clone();
-        let dilithium_pk = dilithium::sign::PubKey::from_bytes(&dilithium_bytes);
-
-        Some(PubKey {
-            ecdsa_pk,
-            dilithium_pk,
-        })
-    }
-
-    pub fn to_bytes(&self, bytes: &mut [u8; PubKey::BYTES_LENGTH]) {
-        let mut ecdsa_x_bytes = [0; ecdsa::NBYTES];
-        let mut ecdsa_y_bytes = [0; ecdsa::NBYTES];
-        self.ecdsa_pk
-            .to_coordinates(&mut ecdsa_x_bytes, &mut ecdsa_y_bytes);
-        array_mut_ref!(bytes, 0, ecdsa::NBYTES).clone_from(&ecdsa_x_bytes);
-        array_mut_ref!(bytes, ecdsa::NBYTES, ecdsa::NBYTES).clone_from(&ecdsa_y_bytes);
-        let mut dilithium_bytes = array_mut_ref!(
-            bytes,
-            ecdsa::NBYTES + ecdsa::NBYTES,
-            dilithium::params::PK_SIZE_PACKED
-        );
-        self.dilithium_pk.to_bytes(&mut dilithium_bytes);
-    }
-
-    pub fn verify_vartime<H>(&self, msg: &[u8], sign: &Signature) -> bool
-    where
-        H: super::Hash256,
-    {
-        return self
-            .ecdsa_pk
-            .verify_hash_vartime(&H::hash(&ecdsa_input(&msg)), &sign.ecdsa_sign)
-            && self.dilithium_pk.verify(
-                &dilithium_input(&msg, &sign.ecdsa_sign),
-                array_ref!(sign.dilithium_sign, 0, dilithium::params::SIG_SIZE_PACKED),
-            );
-    }
-}
-
-impl Signature {
-    pub const BYTES_LENGTH: usize = 64 + dilithium::params::SIG_SIZE_PACKED;
-
-    /// Converts a signature into the CBOR required byte array representation.
-    ///
-    /// This operation consumes the signature to efficiently use memory.
-    pub fn to_asn1_der(self) -> Vec<u8> {
-        let mut bytes = self.ecdsa_sign.to_asn1_der();
-        bytes.reserve_exact(dilithium::params::SIG_SIZE_PACKED);
-        bytes.extend(self.dilithium_sign.into_iter());
-        bytes
-    }
-}
-
-#[cfg(test)]
-mod test {
-    extern crate rng256;
-    use super::super::sha256::Sha256;
-    use super::*;
-    use rng256::Rng256;
-
-    pub const ITERATIONS: u32 = 500;
-
-    #[test]
-    fn test_hybrid_seckey_to_bytes_from_bytes() {
-        let mut rng = rng256::ThreadRng256 {};
-        for _ in 0..ITERATIONS {
-            let sk = SecKey::gensk(&mut rng);
-            let mut bytes = [0; SecKey::BYTES_LENGTH];
-            sk.to_bytes(&mut bytes);
-            let decoded_sk = SecKey::from_bytes(&bytes);
-            assert_eq!(decoded_sk, Some(sk));
-        }
-    }
-
-    #[test]
-    fn test_hybrid_pubkey_to_bytes_from_bytes() {
-        let mut rng = rng256::ThreadRng256 {};
-        for _ in 0..ITERATIONS {
-            let sk = SecKey::gensk(&mut rng);
-            let pk = sk.genpk();
-            let mut bytes = [0; PubKey::BYTES_LENGTH];
-            pk.to_bytes(&mut bytes);
-            let decoded_pk = PubKey::from_bytes(&bytes);
-            assert_eq!(decoded_pk, Some(pk));
-        }
-    }
-
-    #[test]
-    fn test_hybrid_sign_rfc6979_verify_vartime() {
-        let mut rng = rng256::ThreadRng256 {};
-        for _ in 0..ITERATIONS {
-            let msg = rng.gen_uniform_u8x32();
-            let sk = SecKey::gensk(&mut rng);
-            let pk = sk.genpk();
-            let sign = sk.sign_rfc6979::<Sha256>(&msg);
-            assert!(pk.verify_vartime::<Sha256>(&msg, &sign));
-        }
-    }
-}

libraries/crypto/src/lib.rs

@@ -1,4 +1,4 @@
-// Copyright 2019-2022 Google LLC
+// Copyright 2019 Google LLC
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -16,8 +16,6 @@
 #![feature(wrapping_int_impl)]
 
 extern crate alloc;
-#[macro_use]
-extern crate arrayref;
 
 pub mod aes256;
 pub mod cbc;
@@ -26,30 +24,42 @@ pub mod ecdh;
 pub mod ecdsa;
 pub mod hkdf;
 pub mod hmac;
-pub mod hybrid;
 pub mod sha256;
 pub mod util;
 
-// Trait for hash functions that returns a 256-bit hash.
-// The type must be Sized (size known at compile time) so that we can instanciate one on the stack
-// in the hash() method.
+/// Trait for hash functions that returns a 256-bit hash.
+///
+/// When you implement this trait, make sure to implement `hash_mut` and `hmac_mut` first, because
+/// the default implementations of `hash` and `hmac` rely on it.
 pub trait Hash256: Sized {
     fn new() -> Self;
     fn update(&mut self, contents: &[u8]);
-    fn finalize(self) -> [u8; 32];
+    fn finalize(self, output: &mut [u8; 32]);
 
     fn hash(contents: &[u8]) -> [u8; 32] {
+        let mut output = [0; 32];
+        Self::hash_mut(contents, &mut output);
+        output
+    }
+
+    fn hash_mut(contents: &[u8], output: &mut [u8; 32]) {
         let mut h = Self::new();
         h.update(contents);
-        h.finalize()
+        h.finalize(output)
     }
 
     fn hmac(key: &[u8; 32], contents: &[u8]) -> [u8; 32] {
-        hmac::software_hmac_256::<Self>(key, contents)
+        let mut output = [0; 32];
+        Self::hmac_mut(key, contents, &mut output);
+        output
+    }
+
+    fn hmac_mut(key: &[u8; 32], contents: &[u8], output: &mut [u8; 32]) {
+        hmac::software_hmac_256::<Self>(key, contents, output);
     }
 }
 
-// Trait for hash functions that operate on 64-byte input blocks.
+/// Trait for hash functions that operate on 64-byte input blocks.
 pub trait HashBlockSize64Bytes {
     type State;
 

libraries/crypto/src/sha256.rs

@@ -17,6 +17,7 @@ use arrayref::{array_mut_ref, array_ref};
 use byteorder::{BigEndian, ByteOrder};
 use core::cell::Cell;
 use core::num::Wrapping;
+use zeroize::Zeroize;
 
 const BLOCK_SIZE: usize = 64;
 
@@ -32,6 +33,17 @@ pub struct Sha256 {
     total_len: usize,
 }
 
+impl Drop for Sha256 {
+    // TODO derive Zeroize instead when we upgrade the toolchain
+    fn drop(&mut self) {
+        for s in self.state.iter_mut() {
+            s.0.zeroize();
+        }
+        self.block.zeroize();
+        self.total_len.zeroize();
+    }
+}
+
 impl Hash256 for Sha256 {
     fn new() -> Self {
         assert!(!BUSY.replace(true));
@@ -72,7 +84,7 @@ impl Hash256 for Sha256 {
         }
     }
 
-    fn finalize(mut self) -> [u8; 32] {
+    fn finalize(mut self, output: &mut [u8; 32]) {
         // Last block and padding.
         let cursor_in_block = self.total_len % BLOCK_SIZE;
         self.block[cursor_in_block] = 0x80;
@@ -97,12 +109,10 @@ impl Hash256 for Sha256 {
         Sha256::hash_block(&mut self.state, &self.block);
 
         // Encode the state's 32-bit words into bytes, using big-endian.
-        let mut result: [u8; 32] = [0; 32];
         for i in 0..8 {
-            BigEndian::write_u32(array_mut_ref![result, 4 * i, 4], self.state[i].0);
+            BigEndian::write_u32(array_mut_ref![output, 4 * i, 4], self.state[i].0);
         }
         BUSY.set(false);
-        result
     }
 }
 
@@ -272,7 +282,9 @@ mod test {
                 h.update(&input[..i]);
                 h.update(&input[i..j]);
                 h.update(&input[j..]);
-                assert_eq!(h.finalize(), hash.as_slice());
+                let mut digest = [0; 32];
+                h.finalize(&mut digest);
+                assert_eq!(digest, hash.as_slice());
             }
         }
     }

libraries/opensk/Cargo.toml

@@ -0,0 +1,55 @@
+[package]
+name = "opensk"
+version = "1.0.0"
+authors = [
+  "Fabian Kaczmarczyck <kaczmarczyck@google.com>",
+  "Guillaume Endignoux <guillaumee@google.com>",
+  "Jean-Michel Picod <jmichel@google.com>",
+  "Julien Cretin <cretin@google.com>",
+]
+license = "Apache-2.0"
+edition = "2018"
+rust-version = "1.47"
+
+[dependencies]
+sk-cbor = { path = "../cbor" }
+crypto = { path = "../crypto" }
+persistent_store = { path = "../persistent_store" }
+byteorder = { version = "1", default-features = false }
+arrayref = "0.3.6"
+subtle = { version = "2.2", default-features = false, features = ["nightly"] }
+arbitrary = { version = "0.4.7", features = ["derive"], optional = true }
+ed25519-compact = { version = "1", default-features = false, optional = true }
+rand_core = "0.6.4"
+rand = { version = "0.8.5", default-features = false, optional = true }
+sha2 = { version = "0.10.6", default-features = false, optional = true }
+hmac = { version = "0.12.1", default-features = false, optional = true }
+hkdf = { version = "0.12.3", default-features = false, optional = true }
+aes = { version = "0.8.2", default-features = false, optional = true }
+cbc = { version = "0.1.2", default-features = false, optional = true }
+zeroize = { version = "1.5.7", features = ["derive"] }
+
+[dependencies.p256]
+version = "0.13.0"
+default-features = false
+features = ["alloc", "ecdh", "ecdsa"]
+optional = true
+
+[features]
+default = ["config_command", "with_ctap1"]
+config_command = []
+debug_ctap = []
+std = ["crypto/std", "persistent_store/std", "rand/std_rng", "config_command"]
+with_ctap1 = []
+vendor_hid = []
+fuzz = ["arbitrary", "std"]
+ed25519 = ["ed25519-compact"]
+rust_crypto = ["p256", "sha2", "hmac", "hkdf", "aes", "cbc"]
+
+[dev-dependencies]
+enum-iterator = "0.6.0"
+
+[build-dependencies]
+sk-cbor = { path = "../cbor" }
+uuid = { version = "0.8", features = ["v4"] }
+openssl = "0.10.36"

libraries/opensk/fuzz/.gitignore

@@ -0,0 +1,3 @@
+/artifacts/
+/corpus/
+/target/

libraries/opensk/fuzz/Cargo.toml

@@ -1,5 +1,5 @@
 [package]
-name = "ctap2-fuzz"
+name = "opensk-fuzz"
 version = "0.0.0"
 authors = ["Automatically generated"]
 publish = false

libraries/opensk/fuzz/fuzz_helper/Cargo.toml

@@ -0,0 +1,13 @@
+[package]
+name = "fuzz_helper"
+version = "0.1.0"
+authors = ["Mingxiao Guo <mingxguo@google.com>"]
+license = "Apache-2.0"
+edition = "2018"
+
+[dependencies]
+arrayref = "0.3.6"
+opensk = { path = "../..", features = ["fuzz"] }
+crypto = { path = "../../../crypto", features = ['std'] }
+sk-cbor = { path = "../../../cbor" }
+arbitrary = { version = "0.4.7", features = ["derive"] }

libraries/opensk/fuzz/fuzz_helper/src/lib.rs

@@ -12,27 +12,22 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-// This explicit "extern crate" is needed to make the linker aware of the
-// `libtock_alloc_init` symbol.
-extern crate lang_items;
-
 use arbitrary::{Arbitrary, Unstructured};
 use arrayref::array_ref;
 use core::convert::TryFrom;
-use ctap2::api::customization::is_valid;
-use ctap2::clock::CtapInstant;
-use ctap2::ctap::command::{
+use opensk::api::customization::is_valid;
+use opensk::ctap::command::{
     AuthenticatorClientPinParameters, AuthenticatorGetAssertionParameters,
     AuthenticatorMakeCredentialParameters, Command,
 };
-use ctap2::ctap::data_formats::EnterpriseAttestationMode;
-use ctap2::ctap::hid::{
+use opensk::ctap::data_formats::EnterpriseAttestationMode;
+use opensk::ctap::hid::{
     ChannelID, CtapHidCommand, HidPacket, HidPacketIterator, Message, MessageAssembler,
 };
-use ctap2::ctap::{cbor_read, Channel, CtapState};
-use ctap2::env::test::customization::TestCustomization;
-use ctap2::env::test::TestEnv;
-use ctap2::{test_helpers, Ctap, Transport};
+use opensk::ctap::{cbor_read, Channel, CtapState};
+use opensk::env::test::customization::TestCustomization;
+use opensk::env::test::TestEnv;
+use opensk::{test_helpers, Ctap, Transport};
 
 const CHANNEL_BROADCAST: ChannelID = [0xFF, 0xFF, 0xFF, 0xFF];
 
@@ -86,15 +81,11 @@ fn initialize(ctap: &mut Ctap<TestEnv>) -> ChannelID {
         cmd: CtapHidCommand::Init,
         payload: nonce,
     };
-    let mut assembler_reply = MessageAssembler::new();
+    let mut assembler_reply = MessageAssembler::default();
     let mut result_cid: ChannelID = Default::default();
     for pkt_request in HidPacketIterator::new(message).unwrap() {
-        for pkt_reply in
-            ctap.process_hid_packet(&pkt_request, Transport::MainHid, CtapInstant::new(0))
-        {
-            if let Ok(Some(result)) =
-                assembler_reply.parse_packet(ctap.env(), &pkt_reply, CtapInstant::new(0))
-            {
+        for pkt_reply in ctap.process_hid_packet(&pkt_request, Transport::MainHid) {
+            if let Ok(Some(result)) = assembler_reply.parse_packet(ctap.env(), &pkt_reply, None) {
                 result_cid.copy_from_slice(&result.payload[8..12]);
             }
         }
@@ -129,13 +120,11 @@ fn is_type(data: &[u8], input_type: InputType) -> bool {
 fn process_message(data: &[u8], ctap: &mut Ctap<TestEnv>) {
     let message = raw_to_message(data);
     if let Some(hid_packet_iterator) = HidPacketIterator::new(message) {
-        let mut assembler_reply = MessageAssembler::new();
+        let mut assembler_reply = MessageAssembler::default();
         for pkt_request in hid_packet_iterator {
-            for pkt_reply in
-                ctap.process_hid_packet(&pkt_request, Transport::MainHid, CtapInstant::new(0))
-            {
+            for pkt_reply in ctap.process_hid_packet(&pkt_request, Transport::MainHid) {
                 // Only checks for assembling crashes, not for semantics.
-                let _ = assembler_reply.parse_packet(ctap.env(), &pkt_reply, CtapInstant::new(0));
+                let _ = assembler_reply.parse_packet(ctap.env(), &pkt_reply, None);
             }
         }
     }
@@ -147,12 +136,12 @@ fn process_message(data: &[u8], ctap: &mut Ctap<TestEnv>) {
 pub fn process_ctap_any_type(data: &[u8]) -> arbitrary::Result<()> {
     let mut unstructured = Unstructured::new(data);
 
-    let mut env = TestEnv::new();
-    env.rng().seed_from_u64(u64::arbitrary(&mut unstructured)?);
+    let mut env = TestEnv::default();
+    env.seed_rng_from_u64(u64::arbitrary(&mut unstructured)?);
 
     let data = unstructured.take_rest();
     // Initialize ctap state and hid and get the allocated cid.
-    let mut ctap = Ctap::new(env, CtapInstant::new(0));
+    let mut ctap = Ctap::new(env);
     let cid = initialize(&mut ctap);
     // Wrap input as message with the allocated cid.
     let mut command = cid.to_vec();
@@ -179,7 +168,7 @@ fn setup_customization(
 
 fn setup_state(
     unstructured: &mut Unstructured,
-    state: &mut CtapState,
+    state: &mut CtapState<TestEnv>,
     env: &mut TestEnv,
 ) -> FuzzResult<()> {
     if bool::arbitrary(unstructured)? {
@@ -194,15 +183,15 @@ fn setup_state(
 pub fn process_ctap_specific_type(data: &[u8], input_type: InputType) -> arbitrary::Result<()> {
     let mut unstructured = Unstructured::new(data);
 
-    let mut env = TestEnv::new();
-    env.rng().seed_from_u64(u64::arbitrary(&mut unstructured)?);
+    let mut env = TestEnv::default();
+    env.seed_rng_from_u64(u64::arbitrary(&mut unstructured)?);
 
     let data = unstructured.take_rest();
     if !is_type(data, input_type) {
         return Ok(());
     }
     // Initialize ctap state and hid and get the allocated cid.
-    let mut ctap = Ctap::new(env, CtapInstant::new(0));
+    let mut ctap = Ctap::new(env);
     let cid = initialize(&mut ctap);
     // Wrap input as message with allocated cid and command type.
     let mut command = cid.to_vec();
@@ -228,11 +217,11 @@ pub fn process_ctap_specific_type(data: &[u8], input_type: InputType) -> arbitra
 pub fn process_ctap_structured(data: &[u8], input_type: InputType) -> FuzzResult<()> {
     let unstructured = &mut Unstructured::new(data);
 
-    let mut env = TestEnv::new();
-    env.rng().seed_from_u64(u64::arbitrary(unstructured)?);
+    let mut env = TestEnv::default();
+    env.seed_rng_from_u64(u64::arbitrary(unstructured)?);
     setup_customization(unstructured, env.customization_mut())?;
 
-    let mut state = CtapState::new(&mut env, CtapInstant::new(0));
+    let mut state = CtapState::new(&mut env);
     setup_state(unstructured, &mut state, &mut env)?;
 
     let command = match input_type {
@@ -255,7 +244,6 @@ pub fn process_ctap_structured(data: &[u8], input_type: InputType) -> FuzzResult
             &mut env,
             command,
             Channel::MainHid(ChannelID::arbitrary(unstructured)?),
-            CtapInstant::new(0),
         )
         .ok();
 
@@ -266,23 +254,20 @@ pub fn process_ctap_structured(data: &[u8], input_type: InputType) -> FuzzResult
 pub fn split_assemble_hid_packets(data: &[u8]) -> arbitrary::Result<()> {
     let mut unstructured = Unstructured::new(data);
 
-    let mut env = TestEnv::new();
-    env.rng().seed_from_u64(u64::arbitrary(&mut unstructured)?);
+    let mut env = TestEnv::default();
+    env.seed_rng_from_u64(u64::arbitrary(&mut unstructured)?);
 
     let data = unstructured.take_rest();
     let message = raw_to_message(data);
     if let Some(hid_packet_iterator) = HidPacketIterator::new(message.clone()) {
-        let mut assembler = MessageAssembler::new();
+        let mut assembler = MessageAssembler::default();
         let packets: Vec<HidPacket> = hid_packet_iterator.collect();
         if let Some((last_packet, first_packets)) = packets.split_last() {
             for packet in first_packets {
-                assert_eq!(
-                    assembler.parse_packet(&mut env, packet, CtapInstant::new(0)),
-                    Ok(None)
-                );
+                assert_eq!(assembler.parse_packet(&mut env, packet, None), Ok(None));
             }
             assert_eq!(
-                assembler.parse_packet(&mut env, last_packet, CtapInstant::new(0)),
+                assembler.parse_packet(&mut env, last_packet, None),
                 Ok(Some(message))
             );
         }