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Public Key plain byte encoding (#540)

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* public key is encoded in bytes

* ECDSA pubkey in uncompressed format
This commit is contained in:
kaczmarczyck
2022-08-31 15:51:40 +02:00
committed by GitHub
parent 598c21071e
commit 1b360662ee
6 changed files with 18 additions and 50 deletions
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23
build.rs
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@@ -15,7 +15,6 @@
extern crate alloc;
use openssl::{bn, ec, nid};
use sk_cbor::cbor_map;
use std::fs::File;
use std::io::{Read, Write};
use std::path::Path;
@@ -52,25 +51,7 @@ fn main() {
.public_key()
.to_bytes(&group, conversion_form, &mut ctx)
.unwrap();
const POINT_LEN: usize = 32;
assert_eq!(raw_bytes.len(), 1 + 2 * POINT_LEN);
assert_eq!(raw_bytes[0], 0x04);
let x_bytes = &raw_bytes[1..][..POINT_LEN];
let y_bytes = &raw_bytes[1 + POINT_LEN..][..POINT_LEN];
const EC2_KEY_TYPE: i64 = 2;
const P_256_CURVE: i64 = 1;
const ES256_ALGORITHM: i64 = -7;
let pub_key_cbor = sk_cbor::cbor_map! {
1 => EC2_KEY_TYPE,
3 => ES256_ALGORITHM,
-1 => P_256_CURVE,
-2 => x_bytes,
-3 => y_bytes,
};
let mut cbor_bytes = vec![];
sk_cbor::writer::write(pub_key_cbor, &mut cbor_bytes).unwrap();
let upgrade_pubkey_path = Path::new(&out_dir).join("opensk_upgrade_pubkey_cbor.bin");
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();
upgrade_pub_bin_file.write_all(&cbor_bytes).unwrap();
upgrade_pub_bin_file.write_all(&raw_bytes).unwrap();
}