/* LibTomCrypt, modular cryptographic library -- Tom St Denis */ /* SPDX-License-Identifier: Unlicense */ /** @file gcm_test.c GCM implementation, testing, by Tom St Denis */ #include "tomcrypt_private.h" #ifdef LTC_GCM_MODE /** Test the GCM code @return CRYPT_OK on success */ int gcm_test(void) { #ifndef LTC_TEST return CRYPT_NOP; #else static const struct { unsigned char K[32]; int keylen; unsigned char P[128]; unsigned long ptlen; unsigned char A[128]; unsigned long alen; unsigned char IV[128]; unsigned long IVlen; unsigned char C[128]; unsigned char T[16]; } tests[] = { /* test case #1 */ { /* key */ { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, 16, /* plaintext */ { 0 }, 0, /* AAD data */ { 0 }, 0, /* IV */ { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, 12, /* ciphertext */ { 0 }, /* tag */ { 0x58, 0xe2, 0xfc, 0xce, 0xfa, 0x7e, 0x30, 0x61, 0x36, 0x7f, 0x1d, 0x57, 0xa4, 0xe7, 0x45, 0x5a } }, /* test case #2 */ { /* key */ { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, 16, /* PT */ { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, 16, /* ADATA */ { 0 }, 0, /* IV */ { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, 12, /* CT */ { 0x03, 0x88, 0xda, 0xce, 0x60, 0xb6, 0xa3, 0x92, 0xf3, 0x28, 0xc2, 0xb9, 0x71, 0xb2, 0xfe, 0x78 }, /* TAG */ { 0xab, 0x6e, 0x47, 0xd4, 0x2c, 0xec, 0x13, 0xbd, 0xf5, 0x3a, 0x67, 0xb2, 0x12, 0x57, 0xbd, 0xdf } }, /* test case #3 */ { /* key */ { 0xfe, 0xff, 0xe9, 0x92, 0x86, 0x65, 0x73, 0x1c, 0x6d, 0x6a, 0x8f, 0x94, 0x67, 0x30, 0x83, 0x08, }, 16, /* PT */ { 0xd9, 0x31, 0x32, 0x25, 0xf8, 0x84, 0x06, 0xe5, 0xa5, 0x59, 0x09, 0xc5, 0xaf, 0xf5, 0x26, 0x9a, 0x86, 0xa7, 0xa9, 0x53, 0x15, 0x34, 0xf7, 0xda, 0x2e, 0x4c, 0x30, 0x3d, 0x8a, 0x31, 0x8a, 0x72, 0x1c, 0x3c, 0x0c, 0x95, 0x95, 0x68, 0x09, 0x53, 0x2f, 0xcf, 0x0e, 0x24, 0x49, 0xa6, 0xb5, 0x25, 0xb1, 0x6a, 0xed, 0xf5, 0xaa, 0x0d, 0xe6, 0x57, 0xba, 0x63, 0x7b, 0x39, 0x1a, 0xaf, 0xd2, 0x55, }, 64, /* ADATA */ { 0 }, 0, /* IV */ { 0xca, 0xfe, 0xba, 0xbe, 0xfa, 0xce, 0xdb, 0xad, 0xde, 0xca, 0xf8, 0x88, }, 12, /* CT */ { 0x42, 0x83, 0x1e, 0xc2, 0x21, 0x77, 0x74, 0x24, 0x4b, 0x72, 0x21, 0xb7, 0x84, 0xd0, 0xd4, 0x9c, 0xe3, 0xaa, 0x21, 0x2f, 0x2c, 0x02, 0xa4, 0xe0, 0x35, 0xc1, 0x7e, 0x23, 0x29, 0xac, 0xa1, 0x2e, 0x21, 0xd5, 0x14, 0xb2, 0x54, 0x66, 0x93, 0x1c, 0x7d, 0x8f, 0x6a, 0x5a, 0xac, 0x84, 0xaa, 0x05, 0x1b, 0xa3, 0x0b, 0x39, 0x6a, 0x0a, 0xac, 0x97, 0x3d, 0x58, 0xe0, 0x91, 0x47, 0x3f, 0x59, 0x85, }, /* TAG */ { 0x4d, 0x5c, 0x2a, 0xf3, 0x27, 0xcd, 0x64, 0xa6, 0x2c, 0xf3, 0x5a, 0xbd, 0x2b, 0xa6, 0xfa, 0xb4, } }, /* test case #4 */ { /* key */ { 0xfe, 0xff, 0xe9, 0x92, 0x86, 0x65, 0x73, 0x1c, 0x6d, 0x6a, 0x8f, 0x94, 0x67, 0x30, 0x83, 0x08, }, 16, /* PT */ { 0xd9, 0x31, 0x32, 0x25, 0xf8, 0x84, 0x06, 0xe5, 0xa5, 0x59, 0x09, 0xc5, 0xaf, 0xf5, 0x26, 0x9a, 0x86, 0xa7, 0xa9, 0x53, 0x15, 0x34, 0xf7, 0xda, 0x2e, 0x4c, 0x30, 0x3d, 0x8a, 0x31, 0x8a, 0x72, 0x1c, 0x3c, 0x0c, 0x95, 0x95, 0x68, 0x09, 0x53, 0x2f, 0xcf, 0x0e, 0x24, 0x49, 0xa6, 0xb5, 0x25, 0xb1, 0x6a, 0xed, 0xf5, 0xaa, 0x0d, 0xe6, 0x57, 0xba, 0x63, 0x7b, 0x39, }, 60, /* ADATA */ { 0xfe, 0xed, 0xfa, 0xce, 0xde, 0xad, 0xbe, 0xef, 0xfe, 0xed, 0xfa, 0xce, 0xde, 0xad, 0xbe, 0xef, 0xab, 0xad, 0xda, 0xd2, }, 20, /* IV */ { 0xca, 0xfe, 0xba, 0xbe, 0xfa, 0xce, 0xdb, 0xad, 0xde, 0xca, 0xf8, 0x88, }, 12, /* CT */ { 0x42, 0x83, 0x1e, 0xc2, 0x21, 0x77, 0x74, 0x24, 0x4b, 0x72, 0x21, 0xb7, 0x84, 0xd0, 0xd4, 0x9c, 0xe3, 0xaa, 0x21, 0x2f, 0x2c, 0x02, 0xa4, 0xe0, 0x35, 0xc1, 0x7e, 0x23, 0x29, 0xac, 0xa1, 0x2e, 0x21, 0xd5, 0x14, 0xb2, 0x54, 0x66, 0x93, 0x1c, 0x7d, 0x8f, 0x6a, 0x5a, 0xac, 0x84, 0xaa, 0x05, 0x1b, 0xa3, 0x0b, 0x39, 0x6a, 0x0a, 0xac, 0x97, 0x3d, 0x58, 0xe0, 0x91, }, /* TAG */ { 0x5b, 0xc9, 0x4f, 0xbc, 0x32, 0x21, 0xa5, 0xdb, 0x94, 0xfa, 0xe9, 0x5a, 0xe7, 0x12, 0x1a, 0x47, } }, /* test case #5 */ { /* key */ { 0xfe, 0xff, 0xe9, 0x92, 0x86, 0x65, 0x73, 0x1c, 0x6d, 0x6a, 0x8f, 0x94, 0x67, 0x30, 0x83, 0x08, }, 16, /* PT */ { 0xd9, 0x31, 0x32, 0x25, 0xf8, 0x84, 0x06, 0xe5, 0xa5, 0x59, 0x09, 0xc5, 0xaf, 0xf5, 0x26, 0x9a, 0x86, 0xa7, 0xa9, 0x53, 0x15, 0x34, 0xf7, 0xda, 0x2e, 0x4c, 0x30, 0x3d, 0x8a, 0x31, 0x8a, 0x72, 0x1c, 0x3c, 0x0c, 0x95, 0x95, 0x68, 0x09, 0x53, 0x2f, 0xcf, 0x0e, 0x24, 0x49, 0xa6, 0xb5, 0x25, 0xb1, 0x6a, 0xed, 0xf5, 0xaa, 0x0d, 0xe6, 0x57, 0xba, 0x63, 0x7b, 0x39, }, 60, /* ADATA */ { 0xfe, 0xed, 0xfa, 0xce, 0xde, 0xad, 0xbe, 0xef, 0xfe, 0xed, 0xfa, 0xce, 0xde, 0xad, 0xbe, 0xef, 0xab, 0xad, 0xda, 0xd2, }, 20, /* IV */ { 0xca, 0xfe, 0xba, 0xbe, 0xfa, 0xce, 0xdb, 0xad, }, 8, /* CT */ { 0x61, 0x35, 0x3b, 0x4c, 0x28, 0x06, 0x93, 0x4a, 0x77, 0x7f, 0xf5, 0x1f, 0xa2, 0x2a, 0x47, 0x55, 0x69, 0x9b, 0x2a, 0x71, 0x4f, 0xcd, 0xc6, 0xf8, 0x37, 0x66, 0xe5, 0xf9, 0x7b, 0x6c, 0x74, 0x23, 0x73, 0x80, 0x69, 0x00, 0xe4, 0x9f, 0x24, 0xb2, 0x2b, 0x09, 0x75, 0x44, 0xd4, 0x89, 0x6b, 0x42, 0x49, 0x89, 0xb5, 0xe1, 0xeb, 0xac, 0x0f, 0x07, 0xc2, 0x3f, 0x45, 0x98, }, /* TAG */ { 0x36, 0x12, 0xd2, 0xe7, 0x9e, 0x3b, 0x07, 0x85, 0x56, 0x1b, 0xe1, 0x4a, 0xac, 0xa2, 0xfc, 0xcb, } }, /* test case #6 */ { /* key */ { 0xfe, 0xff, 0xe9, 0x92, 0x86, 0x65, 0x73, 0x1c, 0x6d, 0x6a, 0x8f, 0x94, 0x67, 0x30, 0x83, 0x08, }, 16, /* PT */ { 0xd9, 0x31, 0x32, 0x25, 0xf8, 0x84, 0x06, 0xe5, 0xa5, 0x59, 0x09, 0xc5, 0xaf, 0xf5, 0x26, 0x9a, 0x86, 0xa7, 0xa9, 0x53, 0x15, 0x34, 0xf7, 0xda, 0x2e, 0x4c, 0x30, 0x3d, 0x8a, 0x31, 0x8a, 0x72, 0x1c, 0x3c, 0x0c, 0x95, 0x95, 0x68, 0x09, 0x53, 0x2f, 0xcf, 0x0e, 0x24, 0x49, 0xa6, 0xb5, 0x25, 0xb1, 0x6a, 0xed, 0xf5, 0xaa, 0x0d, 0xe6, 0x57, 0xba, 0x63, 0x7b, 0x39, }, 60, /* ADATA */ { 0xfe, 0xed, 0xfa, 0xce, 0xde, 0xad, 0xbe, 0xef, 0xfe, 0xed, 0xfa, 0xce, 0xde, 0xad, 0xbe, 0xef, 0xab, 0xad, 0xda, 0xd2, }, 20, /* IV */ { 0x93, 0x13, 0x22, 0x5d, 0xf8, 0x84, 0x06, 0xe5, 0x55, 0x90, 0x9c, 0x5a, 0xff, 0x52, 0x69, 0xaa, 0x6a, 0x7a, 0x95, 0x38, 0x53, 0x4f, 0x7d, 0xa1, 0xe4, 0xc3, 0x03, 0xd2, 0xa3, 0x18, 0xa7, 0x28, 0xc3, 0xc0, 0xc9, 0x51, 0x56, 0x80, 0x95, 0x39, 0xfc, 0xf0, 0xe2, 0x42, 0x9a, 0x6b, 0x52, 0x54, 0x16, 0xae, 0xdb, 0xf5, 0xa0, 0xde, 0x6a, 0x57, 0xa6, 0x37, 0xb3, 0x9b, }, 60, /* CT */ { 0x8c, 0xe2, 0x49, 0x98, 0x62, 0x56, 0x15, 0xb6, 0x03, 0xa0, 0x33, 0xac, 0xa1, 0x3f, 0xb8, 0x94, 0xbe, 0x91, 0x12, 0xa5, 0xc3, 0xa2, 0x11, 0xa8, 0xba, 0x26, 0x2a, 0x3c, 0xca, 0x7e, 0x2c, 0xa7, 0x01, 0xe4, 0xa9, 0xa4, 0xfb, 0xa4, 0x3c, 0x90, 0xcc, 0xdc, 0xb2, 0x81, 0xd4, 0x8c, 0x7c, 0x6f, 0xd6, 0x28, 0x75, 0xd2, 0xac, 0xa4, 0x17, 0x03, 0x4c, 0x34, 0xae, 0xe5, }, /* TAG */ { 0x61, 0x9c, 0xc5, 0xae, 0xff, 0xfe, 0x0b, 0xfa, 0x46, 0x2a, 0xf4, 0x3c, 0x16, 0x99, 0xd0, 0x50, } }, /* test case #46 from BG (catches the LTC bug of v1.15) */ { /* key */ { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, 16, /* PT */ { 0xa2, 0xaa, 0xb3, 0xad, 0x8b, 0x17, 0xac, 0xdd, 0xa2, 0x88, 0x42, 0x6c, 0xd7, 0xc4, 0x29, 0xb7, 0xca, 0x86, 0xb7, 0xac, 0xa0, 0x58, 0x09, 0xc7, 0x0c, 0xe8, 0x2d, 0xb2, 0x57, 0x11, 0xcb, 0x53, 0x02, 0xeb, 0x27, 0x43, 0xb0, 0x36, 0xf3, 0xd7, 0x50, 0xd6, 0xcf, 0x0d, 0xc0, 0xac, 0xb9, 0x29, 0x50, 0xd5, 0x46, 0xdb, 0x30, 0x8f, 0x93, 0xb4, 0xff, 0x24, 0x4a, 0xfa, 0x9d, 0xc7, 0x2b, 0xcd, 0x75, 0x8d, 0x2c }, 67, /* ADATA */ { 0x68, 0x8e, 0x1a, 0xa9, 0x84, 0xde, 0x92, 0x6d, 0xc7, 0xb4, 0xc4, 0x7f, 0x44 }, 13, /* IV */ { 0xb7, 0x21, 0x38, 0xb5, 0xa0, 0x5f, 0xf5, 0x07, 0x0e, 0x8c, 0xd9, 0x41, 0x83, 0xf7, 0x61, 0xd8 }, 16, /* CT */ { 0xcb, 0xc8, 0xd2, 0xf1, 0x54, 0x81, 0xa4, 0xcc, 0x7d, 0xd1, 0xe1, 0x9a, 0xaa, 0x83, 0xde, 0x56, 0x78, 0x48, 0x3e, 0xc3, 0x59, 0xae, 0x7d, 0xec, 0x2a, 0xb8, 0xd5, 0x34, 0xe0, 0x90, 0x6f, 0x4b, 0x46, 0x63, 0xfa, 0xff, 0x58, 0xa8, 0xb2, 0xd7, 0x33, 0xb8, 0x45, 0xee, 0xf7, 0xc9, 0xb3, 0x31, 0xe9, 0xe1, 0x0e, 0xb2, 0x61, 0x2c, 0x99, 0x5f, 0xeb, 0x1a, 0xc1, 0x5a, 0x62, 0x86, 0xcc, 0xe8, 0xb2, 0x97, 0xa8 }, /* TAG */ { 0x8d, 0x2d, 0x2a, 0x93, 0x72, 0x62, 0x6f, 0x6b, 0xee, 0x85, 0x80, 0x27, 0x6a, 0x63, 0x66, 0xbf } } /* rest of test cases are the same except AES key size changes... ignored... */ }; int idx, err; unsigned long x, y; unsigned char out[2][128], T[2][16]; gcm_state gcm; /* find aes */ idx = find_cipher("aes"); if (idx == -1) { idx = find_cipher("rijndael"); if (idx == -1) { return CRYPT_NOP; } } /* Special test case for empty AAD + empty PT */ y = sizeof(T[0]); if ((err = gcm_init(&gcm, idx, tests[0].K, tests[0].keylen)) != CRYPT_OK) return err; if ((err = gcm_add_iv(&gcm, tests[0].IV, tests[0].IVlen)) != CRYPT_OK) return err; /* intentionally skip gcm_add_aad + gcm_process */ if ((err = gcm_done(&gcm, T[0], &y)) != CRYPT_OK) return err; if (compare_testvector(T[0], y, tests[0].T, 16, "GCM Encrypt Tag-special", 0)) return CRYPT_FAIL_TESTVECTOR; for (x = 0; x < (int)LTC_ARRAY_SIZE(tests); x++) { y = sizeof(T[0]); if ((err = gcm_memory(idx, tests[x].K, tests[x].keylen, tests[x].IV, tests[x].IVlen, tests[x].A, tests[x].alen, (unsigned char*)tests[x].P, tests[x].ptlen, out[0], T[0], &y, GCM_ENCRYPT)) != CRYPT_OK) { return err; } if (compare_testvector(out[0], tests[x].ptlen, tests[x].C, tests[x].ptlen, "GCM CT", x)) { return CRYPT_FAIL_TESTVECTOR; } if (compare_testvector(T[0], y, tests[x].T, 16, "GCM Encrypt Tag", x)) { return CRYPT_FAIL_TESTVECTOR; } y = sizeof(T[1]); XMEMCPY(T[1], tests[x].T, 16); if ((err = gcm_memory(idx, tests[x].K, tests[x].keylen, tests[x].IV, tests[x].IVlen, tests[x].A, tests[x].alen, out[1], tests[x].ptlen, out[0], T[1], &y, GCM_DECRYPT)) != CRYPT_OK) { return err; } if (compare_testvector(out[1], tests[x].ptlen, tests[x].P, tests[x].ptlen, "GCM PT", x)) { return CRYPT_FAIL_TESTVECTOR; } } /* wycheproof failing test - https://github.com/libtom/libtomcrypt/pull/451 */ { unsigned char key[] = { 0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x0a,0x0b,0x0c,0x0d,0x0e,0x0f }; unsigned char iv[] = { 0x50,0x51,0x52,0x53,0x54,0x55,0x56,0x57,0x58,0x59,0x5a,0x5b }; unsigned char valid_tag[] = { 0xd8,0x84,0x7d,0xbc,0x32,0x6a,0x06,0xe9,0x88,0xc7,0x7a,0xd3,0x86,0x3e,0x60,0x83 }; unsigned char invalid_tag[] = { 0xd9,0x84,0x7d,0xbc,0x32,0x6a,0x06,0xe9,0x88,0xc7,0x7a,0xd3,0x86,0x3e,0x60,0x83 }; unsigned char msg[] = { 0x20,0x21,0x22,0x23,0x24,0x25,0x26,0x27,0x28,0x29,0x2a,0x2b,0x2c,0x2d,0x2e,0x2f }; unsigned char ct[] = { 0xeb,0x15,0x6d,0x08,0x1e,0xd6,0xb6,0xb5,0x5f,0x46,0x12,0xf0,0x21,0xd8,0x7b,0x39 }; unsigned char pt[20] = { 0 }; unsigned long taglen; /* VALID tag */ taglen = sizeof(valid_tag); err = gcm_memory(idx, key, sizeof(key), iv, sizeof(iv), NULL, 0, pt, sizeof(ct), ct, valid_tag, &taglen, GCM_DECRYPT); if ((err != CRYPT_OK) || (XMEMCMP(msg, pt, sizeof(msg)) != 0)) { return CRYPT_FAIL_TESTVECTOR; } /* INVALID tag */ taglen = sizeof(invalid_tag); err = gcm_memory(idx, key, sizeof(key), iv, sizeof(iv), NULL, 0, pt, sizeof(ct), ct, invalid_tag, &taglen, GCM_DECRYPT); if (err == CRYPT_OK) { return CRYPT_FAIL_TESTVECTOR; /* should fail */ } } return CRYPT_OK; #endif } #endif