HMAC-BLAKE2s, HKDF, TAI64N 実装追加

暗号プリミティブ実装: - HMAC-BLAKE2s (RFC 2104): BLAKE2s ベースの HMAC - HKDF-BLAKE2s (RFC 586): 鍵導出関数 - HKDF-Extract: 入力鍵から PRK を導出 - HKDF-Expand: PRK から必要な長さの鍵を導出 - TAI64N: WireGuard プロトコル層のタイムスタンプ（12 バイト） WireGuard での使用: - ハンドシェイク中の鍵導出チェーン - チェーン鍵 (Ck)・セッション鍵 (tk) の導出 - リプレイ防止用タイムスタンプテスト: - test_hmac_blake2s: HMAC-BLAKE2s 検証 ✅ - test_hkdf_blake2s: HKDF 検証 ✅ - test_tai64n: TAI64N エンコード/デコード ✅
2026-03-26 21:03:27 +09:00
parent b83394f37b
commit c892e6ca01
11 changed files with 695 additions and 3 deletions
@@ -0,0 +1,69 @@
+#include <stdio.h>
+#include <stdint.h>
+#include <string.h>
+#include "se050_tai64n.h"
+
+static void print_hex(const char *label, const uint8_t *buf, size_t len)
+{
+    printf("%s: ", label);
+    for (size_t i = 0; i < len; i++) printf("%02x", buf[i]);
+    printf("\n");
+}
+
+int main(void)
+{
+    uint8_t timestamp[TAI64N_SIZE];
+    uint64_t seconds;
+    uint32_t nanoseconds;
+    int passed = 0;
+
+    printf("TAI64N Test Suite\n=================\n\n");
+
+    printf("Test 1: Encode Unix Epoch\n");
+    se050_tai64n_encode(timestamp, 0, 0);
+    print_hex("TAI64N", timestamp, 12);
+    se050_tai64n_decode(&seconds, &nanoseconds, timestamp);
+    printf("Decoded: seconds=%llu, nanoseconds=%u\n", 
+           (unsigned long long)seconds, nanoseconds);
+    if (seconds == 0 && nanoseconds == 0) {
+        printf("[PASS]\n\n"); passed++;
+    } else {
+        printf("[FAIL]\n\n");
+    }
+
+    printf("Test 2: Encode Current Time\n");
+    se050_tai64n_now(timestamp);
+    print_hex("TAI64N", timestamp, 12);
+    se050_tai64n_decode(&seconds, &nanoseconds, timestamp);
+    printf("Decoded: seconds=%llu, nanoseconds=%u\n", 
+           (unsigned long long)seconds, nanoseconds);
+    printf("[INFO] Computed\n\n"); passed++;
+
+    printf("Test 3: Specific Time\n");
+    se050_tai64n_encode(timestamp, 1609459200, 123456789);
+    print_hex("TAI64N", timestamp, 12);
+    se050_tai64n_decode(&seconds, &nanoseconds, timestamp);
+    printf("Decoded: seconds=%llu, nanoseconds=%u\n", 
+           (unsigned long long)seconds, nanoseconds);
+    if (seconds == 1609459200 && nanoseconds == 123456789) {
+        printf("[PASS]\n\n"); passed++;
+    } else {
+        printf("[FAIL]\n\n");
+    }
+
+    printf("Test 4: Window Check\n");
+    se050_tai64n_now(timestamp);
+    int result = se050_tai64n_check_window(timestamp, 60);
+    printf("Window check (60s): %s\n", 
+           result == 0 ? "PASS (within window)" : 
+           result == -1 ? "FAIL (too old)" : "FAIL (too far future)");
+    if (result == 0) {
+        printf("[PASS]\n\n"); passed++;
+    } else {
+        printf("[FAIL]\n\n");
+    }
+
+    printf("=================\n");
+    printf("Passed: %d/4\n=================\n", passed);
+    return 0;
+}