diff options
| -rw-r--r-- | sha3.c | 662 | ||||
| -rw-r--r-- | sha3.h | 127 |
2 files changed, 787 insertions, 2 deletions
@@ -213,6 +213,123 @@ void sha3_512(const uint8_t *m, size_t m_len, uint8_t dst[static 64]) { sha3(m, m_len, dst, 64); } +// Initialize iterative sha3 hash context. +static inline void sha3_init(sha3_t * const hash) { + memset(hash, 0, sizeof(sha3_t)); +} + +// Absorb input data into iterative SHA-3 hash context. +static inline bool sha3_absorb(sha3_t * const hash, const size_t rate, const uint8_t * const src, const size_t len) { + if (hash->finalized) { + // hash already finalized, return false + return false; + } + + // absorb bytes (FIXME: should absorb larger chunks) + for (size_t i = 0; i < len; i++) { + hash->a.u8[hash->num_bytes++] ^= src[i]; + if (hash->num_bytes == rate) { + // permute + permute(hash->a.u64); + hash->num_bytes = 0; + } + } + + // return success + return true; +} + +// Finalize iterative SHA-3 hash context. +static inline void sha3_final(sha3_t * const hash, const size_t rate, uint8_t * dst, const size_t dst_len) { + if (!hash->finalized) { + // mark context as final + hash->finalized = true; + + // append suffix and padding + // (note: suffix and padding are ambiguous in spec) + hash->a.u8[hash->num_bytes] ^= 0x06; + hash->a.u8[rate - 1] ^= 0x80; + + // permute + permute(hash->a.u64); + } + + // copy to destination + memcpy(dst, hash->a.u8, dst_len); +} + +#define SHA3_224_CAPACITY 28 +#define SHA3_224_RATE 200 - 2 * SHA3_224_CAPACITY + +// Initialize SHA3-224 iterative hash context. +void sha3_224_init(sha3_t * const hash) { + sha3_init(hash); +} + +// Absorb data into SHA3-224 iterative hash context. +_Bool sha3_224_absorb(sha3_t * const hash, const uint8_t *src, const size_t len) { + return sha3_absorb(hash, SHA3_224_RATE, src, len); +} + +// Finalize SHA3-224 iterative hash context. +void sha3_224_final(sha3_t * const hash, uint8_t dst[SHA3_224_CAPACITY]) { + sha3_final(hash, SHA3_224_RATE, dst, SHA3_224_CAPACITY); +} + +#define SHA3_256_CAPACITY 32 +#define SHA3_256_RATE 200 - 2 * SHA3_256_CAPACITY + +// Initialize SHA3-256 iterative hash context. +void sha3_256_init(sha3_t * const hash) { + sha3_init(hash); +} + +// Absorb data into SHA3-256 iterative hash context. +_Bool sha3_256_absorb(sha3_t * const hash, const uint8_t *src, const size_t len) { + return sha3_absorb(hash, SHA3_256_RATE, src, len); +} + +// Finalize SHA3-256 iterative hash context. +void sha3_256_final(sha3_t * const hash, uint8_t dst[SHA3_256_CAPACITY]) { + sha3_final(hash, SHA3_256_RATE, dst, SHA3_256_CAPACITY); +} + +#define SHA3_384_CAPACITY 48 +#define SHA3_384_RATE 200 - 2 * SHA3_384_CAPACITY + +// Initialize SHA3-384 iterative hash context. +void sha3_384_init(sha3_t * const hash) { + sha3_init(hash); +} + +// Absorb data into SHA3-384 iterative hash context. +_Bool sha3_384_absorb(sha3_t * const hash, const uint8_t *src, const size_t len) { + return sha3_absorb(hash, SHA3_384_RATE, src, len); +} + +// Finalize SHA3-384 iterative hash context. +void sha3_384_final(sha3_t * const hash, uint8_t dst[SHA3_384_CAPACITY]) { + sha3_final(hash, SHA3_384_RATE, dst, SHA3_384_CAPACITY); +} + +#define SHA3_512_CAPACITY 64 +#define SHA3_512_RATE 200 - 2 * SHA3_512_CAPACITY + +// Initialize SHA3-512 iterative hash context. +void sha3_512_init(sha3_t * const hash) { + sha3_init(hash); +} + +// Absorb data into SHA3-512 iterative hash context. +_Bool sha3_512_absorb(sha3_t * const hash, const uint8_t *src, const size_t len) { + return sha3_absorb(hash, SHA3_512_RATE, src, len); +} + +// Finalize SHA3-512 iterative hash context. +void sha3_512_final(sha3_t * const hash, uint8_t dst[SHA3_512_CAPACITY]) { + sha3_final(hash, SHA3_512_RATE, dst, SHA3_512_CAPACITY); +} + static inline void shake(const uint8_t *m, size_t m_len, uint8_t * const dst, const size_t dst_len) { // in the sha3 xof functions, the capacity is always 2 times the // destination length, and the rate is the total state size minus the @@ -2005,6 +2122,547 @@ static void test_sha3_512(void) { } } +static void test_sha3_224_ctx(void) { + static const struct { + const char *name; // test name + const uint8_t msg[256]; // test message + const size_t len; // test message length + const uint8_t exp[28]; // expected hash + } tests[] = {{ + .name = "empty", + .msg = "", + .len = 0, + .exp = { + 0x6b, 0x4e, 0x03, 0x42, 0x36, 0x67, 0xdb, 0xb7, + 0x3b, 0x6e, 0x15, 0x45, 0x4f, 0x0e, 0xb1, 0xab, + 0xd4, 0x59, 0x7f, 0x9a, 0x1b, 0x07, 0x8e, 0x3f, + 0x5b, 0x5a, 0x6b, 0xc7, + }, + }, { + .name = "asdf", + .msg = "asdf", + .len = 4, + .exp = { + 0x47, 0xcc, 0xa2, 0x03, 0xee, 0xfc, 0xa3, 0x49, + 0xde, 0xaa, 0x41, 0x8d, 0xa7, 0xfe, 0x05, 0x38, + 0x9e, 0xf6, 0x49, 0x98, 0x5c, 0x87, 0xa9, 0xb6, + 0x55, 0xad, 0x12, 0x8c, + }, + }, { + .name = "a-134", + .msg = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", + .len = 134, + .exp = { + 0x5d, 0x1d, 0xb4, 0xe4, 0x7c, 0x0c, 0x4a, 0x42, + 0x45, 0xb9, 0x0d, 0x18, 0x55, 0xb0, 0x7c, 0xb1, + 0x6f, 0xb9, 0x40, 0xc5, 0x00, 0x76, 0xc1, 0xfd, + 0x2a, 0xc2, 0x17, 0xfe, + }, + }, { + .name = "a-135", + .msg = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", + .len = 135, + .exp = { + 0xf9, 0xf2, 0x8c, 0x21, 0xa2, 0xb0, 0x88, 0x4b, + 0xbd, 0x35, 0x94, 0xca, 0xe8, 0x2b, 0xf8, 0x11, + 0xc0, 0xc1, 0xed, 0xe4, 0x27, 0xe0, 0x83, 0xd5, + 0x57, 0x6e, 0x90, 0x9d, + }, + }, { + .name = "a-136", + .msg = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", + .len = 136, + .exp = { + 0x96, 0x13, 0x6a, 0x6a, 0x09, 0x44, 0x33, 0xb4, + 0xaa, 0x85, 0x5f, 0x16, 0x38, 0x29, 0xa2, 0xce, + 0x6b, 0xca, 0x7d, 0x56, 0xcf, 0xd2, 0x16, 0x3b, + 0x47, 0xf1, 0xf1, 0xc4, + }, + }, { + .name = "ff-256", + .msg = { + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + }, + .len = 256, + .exp = { + 0xb6, 0x53, 0x4d, 0x8b, 0xee, 0xdf, 0xb5, 0xed, + 0x3f, 0x95, 0x3b, 0x09, 0xd1, 0x2f, 0xc3, 0x8f, + 0x3d, 0x8b, 0x0b, 0xea, 0x9d, 0x80, 0xbd, 0x1e, + 0x25, 0xc9, 0xfc, 0x35, + }, + }, { + .name = "a-210", + .msg = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", + .len = 210, + .exp = { + 0x03, 0x05, 0x4a, 0xb0, 0xa3, 0x37, 0x99, 0xbe, + 0x2b, 0x17, 0xc8, 0x2b, 0x3a, 0x13, 0x90, 0x05, + 0x2e, 0x49, 0xdf, 0x31, 0x6d, 0x85, 0x15, 0x2d, + 0x74, 0x66, 0xab, 0x57, + }, + }}; + + // run all tests + for (size_t i = 0; i < sizeof(tests) / sizeof(tests[0]); i++) { + // try all possible absorb sizes from 1 to len + for (size_t j = 1; j < tests[i].len; j++) { + // init + sha3_t hash; + sha3_224_init(&hash); + + // absorb + for (size_t k = 0; k < tests[i].len; k += j) { + const size_t absorb_len = MIN(tests[i].len - k, j); + sha3_224_absorb(&hash, tests[i].msg + k, absorb_len); + } + + // finalize + uint8_t got[28] = { 0 }; + sha3_224_final(&hash, got); + + // check + if (memcmp(got, tests[i].exp, sizeof(got))) { + fprintf(stderr, "test_sha3_224_ctx(\"%s\") failed, got:\n", tests[i].name); + dump_hex(stderr, got, 28); + + fprintf(stderr, "exp:\n"); + dump_hex(stderr, tests[i].exp, 28); + } + } + } +} + +static void test_sha3_256_ctx(void) { + static const struct { + const char *name; // test name + const uint8_t msg[256]; // test message + const size_t len; // test message length + const uint8_t exp[32]; // expected hash + } tests[] = {{ + .name = "empty", + .msg = "", + .len = 0, + .exp = { + 0xa7, 0xff, 0xc6, 0xf8, 0xbf, 0x1e, 0xd7, 0x66, + 0x51, 0xc1, 0x47, 0x56, 0xa0, 0x61, 0xd6, 0x62, + 0xf5, 0x80, 0xff, 0x4d, 0xe4, 0x3b, 0x49, 0xfa, + 0x82, 0xd8, 0x0a, 0x4b, 0x80, 0xf8, 0x43, 0x4a, + }, + }, { + .name = "asdf", + .msg = "asdf", + .len = 4, + .exp = { + 0xdd, 0x27, 0x81, 0xf4, 0xc5, 0x1b, 0xcc, 0xdb, + 0xe2, 0x3e, 0x4d, 0x39, 0x8b, 0x8a, 0x82, 0x26, + 0x1f, 0x58, 0x5c, 0x27, 0x8d, 0xbb, 0x4b, 0x84, + 0x98, 0x9f, 0xea, 0x70, 0xe7, 0x67, 0x23, 0xa9, + }, + }, { + .name = "a-134", + .msg = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", + .len = 134, + .exp = { + 0x58, 0xb9, 0x70, 0xc3, 0x7a, 0xc2, 0xd6, 0x5b, + 0x59, 0x9b, 0x69, 0x18, 0x68, 0xa6, 0x14, 0x01, + 0xa5, 0x01, 0xc4, 0x0f, 0x23, 0x5d, 0x55, 0xf0, + 0x59, 0xd3, 0x9a, 0x94, 0x2f, 0x41, 0xdc, 0xee, + }, + }, { + .name = "a-135", + .msg = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", + .len = 135, + .exp = { + 0x80, 0x94, 0xbb, 0x53, 0xc4, 0x4c, 0xfb, 0x1e, + 0x67, 0xb7, 0xc3, 0x04, 0x47, 0xf9, 0xa1, 0xc3, + 0x36, 0x96, 0xd2, 0x46, 0x3e, 0xcc, 0x1d, 0x9c, + 0x92, 0x53, 0x89, 0x13, 0x39, 0x28, 0x43, 0xc9, + }, + }, { + .name = "a-136", + .msg = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", + .len = 136, + .exp = { + 0x3f, 0xc5, 0x55, 0x9f, 0x14, 0xdb, 0x8e, 0x45, + 0x3a, 0x0a, 0x30, 0x91, 0xed, 0xbd, 0x2b, 0xc2, + 0x5e, 0x11, 0x52, 0x8d, 0x81, 0xc6, 0x6f, 0xa5, + 0x70, 0xa4, 0xef, 0xdc, 0xc2, 0x69, 0x5e, 0xe1, + }, + }, { + .name = "ff-256", + .msg = { + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + }, + .len = 256, + .exp = { + 0xea, 0xa5, 0x7c, 0x69, 0x9a, 0x7a, 0x61, 0x4f, + 0x9d, 0x96, 0x1e, 0x42, 0xd8, 0xb1, 0x2a, 0x93, + 0x54, 0x6e, 0x8e, 0x80, 0xd3, 0x1f, 0x5c, 0xfc, + 0xc4, 0x3f, 0x95, 0x39, 0xed, 0x06, 0x30, 0x7a, + }, + }, { + .name = "a-210", + .msg = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", + .len = 210, + .exp = { + 0xb4, 0x12, 0xbd, 0x70, 0xce, 0x67, 0xeb, 0x59, + 0x0b, 0xb2, 0x25, 0x09, 0xef, 0x4e, 0x68, 0x7e, + 0x02, 0xb4, 0x8e, 0x07, 0xd2, 0xbb, 0xd7, 0xbb, + 0x9a, 0xfb, 0x58, 0x70, 0xfd, 0x14, 0xc1, 0x13, + }, + }}; + + // run all tests + for (size_t i = 0; i < sizeof(tests) / sizeof(tests[0]); i++) { + // try all possible absorb sizes from 1 to len + for (size_t j = 1; j < tests[i].len; j++) { + // init context + sha3_t hash; + sha3_256_init(&hash); + + // absorb + for (size_t k = 0; k < tests[i].len; k += j) { + const size_t absorb_len = MIN(tests[i].len - k, j); + sha3_256_absorb(&hash, tests[i].msg + k, absorb_len); + } + + // finalize + uint8_t got[32] = { 0 }; + sha3_256_final(&hash, got); + + // check + if (memcmp(got, tests[i].exp, sizeof(got))) { + fprintf(stderr, "test_sha3_256_ctx(\"%s\") failed, got:\n", tests[i].name); + dump_hex(stderr, got, 32); + + fprintf(stderr, "exp:\n"); + dump_hex(stderr, tests[i].exp, 32); + } + } + } +} + +static void test_sha3_384_ctx(void) { + static const struct { + const char *name; // test name + const uint8_t msg[256]; // test message + const size_t len; // test message length + const uint8_t exp[48]; // expected hash + } tests[] = {{ + .name = "empty", + .msg = "", + .len = 0, + .exp = { + 0x0c, 0x63, 0xa7, 0x5b, 0x84, 0x5e, 0x4f, 0x7d, + 0x01, 0x10, 0x7d, 0x85, 0x2e, 0x4c, 0x24, 0x85, + 0xc5, 0x1a, 0x50, 0xaa, 0xaa, 0x94, 0xfc, 0x61, + 0x99, 0x5e, 0x71, 0xbb, 0xee, 0x98, 0x3a, 0x2a, + 0xc3, 0x71, 0x38, 0x31, 0x26, 0x4a, 0xdb, 0x47, + 0xfb, 0x6b, 0xd1, 0xe0, 0x58, 0xd5, 0xf0, 0x04, + }, + }, { + .name = "asdf", + .msg = "asdf", + .len = 4, + .exp = { + 0xcc, 0x8c, 0x24, 0x61, 0xa8, 0xac, 0xb5, 0x8c, + 0x9e, 0x7b, 0x78, 0x95, 0x8e, 0xa3, 0x6d, 0x5f, + 0xd3, 0x20, 0x38, 0xf9, 0x58, 0xcd, 0xbb, 0x59, + 0xf2, 0x6b, 0x0f, 0xfd, 0x1c, 0x36, 0x57, 0x61, + 0x83, 0xe1, 0xc2, 0xca, 0x33, 0x57, 0xca, 0x1e, + 0x33, 0x3a, 0x11, 0xaf, 0xac, 0x8a, 0xed, 0xe6, + }, + }, { + .name = "a-134", + .msg = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", + .len = 134, + .exp = { + 0xac, 0x8b, 0xca, 0x5d, 0x14, 0xed, 0xb5, 0xfc, + 0x82, 0xe2, 0x2e, 0x45, 0x33, 0x34, 0xcb, 0x39, + 0xef, 0x43, 0x14, 0xa5, 0x9a, 0xd7, 0xba, 0x6f, + 0xb1, 0x0f, 0x0b, 0x11, 0xbe, 0x7b, 0x4a, 0xf3, + 0xfd, 0xe3, 0xe9, 0x54, 0x07, 0x81, 0xc2, 0x39, + 0xfa, 0x4c, 0x1f, 0x60, 0x44, 0xf3, 0x1d, 0xa9, + }, + }, { + .name = "a-135", + .msg = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", + .len = 135, + .exp = { + 0xa2, 0xd5, 0x19, 0x07, 0xc0, 0x61, 0x1e, 0x25, + 0xc0, 0x58, 0xf0, 0x67, 0x50, 0x42, 0xe8, 0xf5, + 0x3c, 0xc4, 0x73, 0xdc, 0x34, 0x7c, 0x5e, 0xa8, + 0xa8, 0x13, 0xd8, 0x86, 0xb3, 0xaa, 0x8f, 0x8d, + 0xca, 0xb6, 0x1a, 0x23, 0x62, 0x37, 0xd9, 0x4d, + 0xe4, 0x04, 0xcd, 0x66, 0x60, 0x62, 0x43, 0xf9, + }, + }, { + .name = "a-136", + .msg = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", + .len = 136, + .exp = { + 0xcb, 0xbc, 0xb4, 0x66, 0x41, 0x7a, 0x2f, 0x6d, + 0x46, 0x64, 0x79, 0xbb, 0x6d, 0xc6, 0x59, 0x43, + 0x4d, 0x95, 0x89, 0xde, 0x3a, 0x53, 0xac, 0xc9, + 0xb4, 0x27, 0x58, 0x04, 0x82, 0xe3, 0x05, 0x94, + 0x88, 0x88, 0xc8, 0xfa, 0x6d, 0x06, 0x9c, 0x5e, + 0x6a, 0x89, 0x9a, 0xa3, 0x4a, 0x9a, 0xf1, 0x5a, + }, + }, { + .name = "ff-256", + .msg = { + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + }, + .len = 256, + .exp = { + 0x91, 0xb2, 0xc0, 0xab, 0x2c, 0xe3, 0x31, 0xcd, + 0x59, 0xab, 0x98, 0x3b, 0x87, 0xaf, 0xc9, 0xe5, + 0x45, 0x66, 0x33, 0xb1, 0x30, 0x49, 0xac, 0x84, + 0x36, 0x04, 0xc9, 0xb6, 0xc3, 0xab, 0x09, 0xc3, + 0x5c, 0xf8, 0x8c, 0xcb, 0xf7, 0x61, 0xc5, 0x64, + 0x7c, 0x92, 0x2b, 0xcc, 0x9b, 0x37, 0x5a, 0x6b, + }, + }, { + .name = "a-210", + .msg = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", + .len = 210, + .exp = { + 0x23, 0x2f, 0xba, 0x5c, 0x81, 0x59, 0x36, 0xc7, + 0x7b, 0x37, 0x3a, 0x5e, 0x5d, 0xa0, 0xd2, 0xca, + 0x3b, 0x15, 0xcd, 0x28, 0x58, 0x92, 0x66, 0x14, + 0x5a, 0x92, 0xd6, 0x50, 0xfa, 0x58, 0xef, 0x4f, + 0xdf, 0xa3, 0x4e, 0x9e, 0x2f, 0x0e, 0xa8, 0x7a, + 0x67, 0x32, 0x8f, 0x68, 0x9a, 0x6b, 0x8f, 0x04, + }, + }}; + + // run all tests + for (size_t i = 0; i < sizeof(tests) / sizeof(tests[0]); i++) { + // try all possible absorb sizes from 1 to len + for (size_t j = 1; j < tests[i].len; j++) { + // init + sha3_t hash; + sha3_384_init(&hash); + + // absorb + for (size_t k = 0; k < tests[i].len; k += j) { + const size_t absorb_len = MIN(tests[i].len - k, j); + sha3_384_absorb(&hash, tests[i].msg + k, absorb_len); + } + + // finalize + uint8_t got[48] = { 0 }; + sha3_384_final(&hash, got); + + // check + if (memcmp(got, tests[i].exp, sizeof(got))) { + fprintf(stderr, "test_sha3_384_ctx(\"%s\") failed, got:\n", tests[i].name); + dump_hex(stderr, got, 48); + + fprintf(stderr, "exp:\n"); + dump_hex(stderr, tests[i].exp, 48); + } + } + } +} + +static void test_sha3_512_ctx(void) { + static const struct { + const char *name; // test name + const uint8_t msg[256]; // test message + const size_t len; // test message length + const uint8_t exp[64]; // expected hash + } tests[] = {{ + .name = "empty", + .msg = "", + .len = 0, + .exp = { + 0xa6, 0x9f, 0x73, 0xcc, 0xa2, 0x3a, 0x9a, 0xc5, + 0xc8, 0xb5, 0x67, 0xdc, 0x18, 0x5a, 0x75, 0x6e, + 0x97, 0xc9, 0x82, 0x16, 0x4f, 0xe2, 0x58, 0x59, + 0xe0, 0xd1, 0xdc, 0xc1, 0x47, 0x5c, 0x80, 0xa6, + 0x15, 0xb2, 0x12, 0x3a, 0xf1, 0xf5, 0xf9, 0x4c, + 0x11, 0xe3, 0xe9, 0x40, 0x2c, 0x3a, 0xc5, 0x58, + 0xf5, 0x00, 0x19, 0x9d, 0x95, 0xb6, 0xd3, 0xe3, + 0x01, 0x75, 0x85, 0x86, 0x28, 0x1d, 0xcd, 0x26, + }, + }, { + .name = "asdf", + .msg = "asdf", + .len = 4, + .exp = { + 0x8d, 0x88, 0xcf, 0x5b, 0x20, 0xf5, 0x3a, 0xcd, + 0x7a, 0xe1, 0x47, 0x9b, 0x5b, 0x36, 0xdc, 0x20, + 0x21, 0x75, 0x3b, 0x04, 0x99, 0x02, 0xc7, 0x72, + 0x47, 0xbb, 0x27, 0xb1, 0x31, 0xb3, 0x00, 0xbd, + 0x3c, 0xa8, 0xbe, 0xef, 0x28, 0x75, 0x6d, 0xce, + 0x27, 0xb8, 0x99, 0x08, 0x67, 0xc4, 0x57, 0x7a, + 0x25, 0x35, 0xe7, 0xe3, 0xb7, 0x51, 0x41, 0x39, + 0x9c, 0xa1, 0xa9, 0x4c, 0xc8, 0x4b, 0x0e, 0xb9, + }, + }, { + .name = "a-134", + .msg = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", + .len = 134, + .exp = { + 0x4e, 0x72, 0xa4, 0xf6, 0x55, 0x99, 0xa2, 0x47, + 0x2a, 0x66, 0xf8, 0xa8, 0xd6, 0xcf, 0xb3, 0x84, + 0xb7, 0xd3, 0x4f, 0x52, 0xec, 0xaa, 0x00, 0xe9, + 0xf0, 0x66, 0x82, 0x0b, 0x0e, 0xdc, 0x1f, 0xcc, + 0x9c, 0xf3, 0x12, 0x0b, 0x81, 0x46, 0x89, 0xbc, + 0x62, 0xb7, 0x72, 0x0f, 0x4e, 0x4c, 0x99, 0x3d, + 0xa0, 0x84, 0x08, 0x27, 0xf6, 0x95, 0x03, 0x8a, + 0x82, 0x18, 0x69, 0xe8, 0xa6, 0x27, 0x60, 0xe8, + }, + }, { + .name = "a-135", + .msg = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", + .len = 135, + .exp = { + 0x4b, 0xe1, 0xe7, 0x02, 0x76, 0xf9, 0x12, 0x2f, + 0x47, 0x0a, 0x54, 0xc2, 0x72, 0x40, 0xc7, 0xd0, + 0x70, 0x9d, 0xab, 0x74, 0x69, 0x95, 0x8b, 0x48, + 0xa9, 0x50, 0xd6, 0x9d, 0xa6, 0xdd, 0x07, 0xca, + 0x13, 0x58, 0x26, 0xd9, 0xd2, 0x3e, 0x97, 0x5c, + 0xb9, 0x28, 0x3e, 0x7d, 0x23, 0x6e, 0xf9, 0x8a, + 0x80, 0x45, 0x1d, 0xca, 0x8e, 0x31, 0x1f, 0x52, + 0x09, 0x63, 0x08, 0xb2, 0xc8, 0xd7, 0x0c, 0xc7, + }, + }, { + .name = "a-136", + .msg = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", + .len = 136, + .exp = { + 0xe5, 0x03, 0x92, 0xc9, 0x1e, 0xd9, 0x57, 0x68, + 0xc8, 0xdc, 0xf5, 0x2a, 0x12, 0xe5, 0xdb, 0x1e, + 0xcd, 0x03, 0x47, 0xfb, 0x99, 0x5f, 0x7f, 0xf4, + 0xea, 0x06, 0x99, 0x46, 0x49, 0xbb, 0xd1, 0xa0, + 0xde, 0x7a, 0xe3, 0x6a, 0x62, 0xaa, 0xdc, 0x00, + 0xa7, 0x04, 0xd7, 0x30, 0xb5, 0x2b, 0xda, 0x19, + 0x1b, 0x72, 0x95, 0x1e, 0x2a, 0xfc, 0x9b, 0x6f, + 0xb6, 0x82, 0x47, 0x87, 0xb2, 0x08, 0x62, 0x57, + }, + }, { + .name = "ff-256", + .msg = { + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + }, + .len = 256, + .exp = { + 0x02, 0x3a, 0x91, 0x27, 0xcf, 0x29, 0x6d, 0x01, + 0x12, 0x0e, 0x3d, 0xaa, 0x92, 0x76, 0x15, 0x23, + 0x8e, 0x97, 0xdd, 0xb6, 0x33, 0x26, 0xe2, 0x89, + 0xb3, 0x31, 0xe2, 0x25, 0xbe, 0x41, 0xea, 0xd5, + 0x90, 0xf1, 0xdd, 0x5c, 0x80, 0x1d, 0x91, 0x03, + 0xfe, 0x65, 0x7d, 0x23, 0x63, 0xbd, 0xb2, 0x66, + 0xe7, 0x90, 0xb1, 0x89, 0x0b, 0x3d, 0xd5, 0x79, + 0xdc, 0xa7, 0xf9, 0x1f, 0x5f, 0x4d, 0x98, 0x49, + }, + }, { + .name = "a-210", + .msg = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", + .len = 210, + .exp = { + 0x47, 0xfa, 0xd7, 0x8d, 0x72, 0x35, 0xe5, 0xcd, + 0xb9, 0xd7, 0x23, 0x6c, 0xfc, 0xf2, 0x79, 0xdb, + 0x0f, 0x8a, 0xcd, 0x5b, 0xf1, 0x7b, 0xdc, 0x74, + 0x18, 0xe4, 0x29, 0xb7, 0x1a, 0x0a, 0x21, 0xb7, + 0xed, 0xe8, 0x54, 0x64, 0xcf, 0x69, 0x44, 0x63, + 0xff, 0x0e, 0x56, 0xf2, 0x8f, 0x04, 0xbf, 0x85, + 0xc0, 0x85, 0xe1, 0x17, 0x6a, 0x47, 0xd7, 0x3b, + 0xf2, 0x8b, 0xdb, 0xa0, 0x4f, 0x4a, 0xe7, 0x61, + }, + }}; + + for (size_t i = 0; i < sizeof(tests) / sizeof(tests[0]); i++) { + // try all possible absorb sizes from 1 to len + for (size_t j = 1; j < tests[i].len; j++) { + // init + sha3_t hash; + sha3_512_init(&hash); + + // absorb + for (size_t k = 0; k < tests[i].len; k += j) { + const size_t absorb_len = MIN(tests[i].len - k, j); + sha3_512_absorb(&hash, tests[i].msg + k, absorb_len); + } + + // finalize + uint8_t got[64] = { 0 }; + sha3_512_final(&hash, got); + + // check + if (memcmp(got, tests[i].exp, sizeof(got))) { + fprintf(stderr, "test_sha3_512_ctx(\"%s\") failed, got:\n", tests[i].name); + dump_hex(stderr, got, 64); + + fprintf(stderr, "exp:\n"); + dump_hex(stderr, tests[i].exp, 64); + } + } + } +} + static void test_shake128(void) { static const struct { const char *name; // test name @@ -4238,6 +4896,10 @@ int main(void) { test_sha3_256(); test_sha3_384(); test_sha3_512(); + test_sha3_224_ctx(); + test_sha3_256_ctx(); + test_sha3_384_ctx(); + test_sha3_512_ctx(); test_shake128(); test_shake256(); test_shake128_xof(); @@ -11,13 +11,20 @@ extern "C" { #include <stdint.h> -// sha3 state +// Internal sha3 state. typedef union { uint8_t u8[200]; uint64_t u64[25]; } sha3_state_t; -// Internal XOF state +// Iterative SHA-3 context (all members are private). +typedef struct { + size_t num_bytes; // number of bytes absorbed + sha3_state_t a; // internal state + _Bool finalized; // mode (absorbing or finalized) +} sha3_t; + +// Iterative XOF context (all members are private). typedef struct { size_t num_bytes; // number of bytes absorbed sha3_state_t a; // internal state @@ -36,6 +43,35 @@ typedef struct { void sha3_224(const uint8_t *m, size_t m_len, uint8_t dst[static 28]); /** + * Initialize SHA3-224 hash context. + * + * @param[out] hash SHA3-224 hash context. + */ +void sha3_224_init(sha3_t *hash); + +/** + * Absorb input data in `src` of length `len` bytes into SHA3-224 hash + * context `hash`. Can be called iteratively to absorb input data in + * chunks. + * + * @param[in/out] hash SHA3-224 hash context. + * @param[in] src Input data. + * @param[in] len Input data length, in bytes. + * + * @return True if data was absorbed, and false otherwise (e.g., if context has already been finalized). + */ +_Bool sha3_224_absorb(sha3_t *hash, const uint8_t *src, const size_t len); + +/** + * Finalize SHA3-224 hash context and write 28 bytes of output to + * destination buffer `dst`. + * + * @param[in/out] hash SHA3-224 hash context. + * @param[out] dst Destination buffer. Must be at least 28 bytes in length. + */ +void sha3_224_final(sha3_t *hash, uint8_t dst[28]); + +/** * Hash input message in input buffer `m` of length `m_len` bytes with * SHA3-256 (FIPS 202, section 6.1) and write 32 bytes of output to * destination buffer `dst`. @@ -47,6 +83,35 @@ void sha3_224(const uint8_t *m, size_t m_len, uint8_t dst[static 28]); void sha3_256(const uint8_t *m, size_t m_len, uint8_t dst[static 32]); /** + * Initialize SHA3-256 hash context. + * + * @param[out] hash SHA3-256 hash context. + */ +void sha3_256_init(sha3_t *hash); + +/** + * Absorb input data in `src` of length `len` bytes into SHA3-256 hash + * context `hash`. Can be called iteratively to absorb input data in + * chunks. + * + * @param[in/out] hash SHA3-256 hash context. + * @param[in] src Input data. + * @param[in] len Input data length, in bytes. + * + * @return True if data was absorbed, and false otherwise (e.g., if context has already been finalized). + */ +_Bool sha3_256_absorb(sha3_t *hash, const uint8_t *src, const size_t len); + +/** + * Finalize SHA3-256 hash context and write 28 bytes of output to + * destination buffer `dst`. + * + * @param[in/out] hash SHA3-256 hash context. + * @param[out] dst Destination buffer. Must be at least 32 bytes in length. + */ +void sha3_256_final(sha3_t *hash, uint8_t dst[32]); + +/** * Hash input message in input buffer `m` of length `m_len` bytes with * SHA3-384 (FIPS 202, section 6.1) and write 48 bytes of output to * destination buffer `dst`. @@ -58,6 +123,35 @@ void sha3_256(const uint8_t *m, size_t m_len, uint8_t dst[static 32]); void sha3_384(const uint8_t *m, size_t m_len, uint8_t dst[static 48]); /** + * Initialize SHA3-384 hash context. + * + * @param[out] hash SHA3-384 hash context. + */ +void sha3_384_init(sha3_t *hash); + +/** + * Absorb input data in `src` of length `len` bytes into SHA3-384 hash + * context `hash`. Can be called iteratively to absorb input data in + * chunks. + * + * @param[in/out] hash SHA3-384 hash context. + * @param[in] src Input data. + * @param[in] len Input data length, in bytes. + * + * @return True if data was absorbed, and false otherwise (e.g., if context has already been finalized). + */ +_Bool sha3_384_absorb(sha3_t *hash, const uint8_t *src, const size_t len); + +/** + * Finalize SHA3-384 hash context and write 28 bytes of output to + * destination buffer `dst`. + * + * @param[in/out] hash SHA3-384 hash context. + * @param[out] dst Destination buffer. Must be at least 48 bytes in length. + */ +void sha3_384_final(sha3_t *hash, uint8_t dst[48]); + +/** * Hash input message in input buffer `m` of length `m_len` bytes with * SHA3-512 (FIPS 202, section 6.1) and write 64 bytes of output to * destination buffer `dst`. @@ -69,6 +163,35 @@ void sha3_384(const uint8_t *m, size_t m_len, uint8_t dst[static 48]); void sha3_512(const uint8_t *m, size_t m_len, uint8_t dst[static 64]); /** + * Initialize SHA3-512 hash context. + * + * @param[out] hash SHA3-512 hash context. + */ +void sha3_512_init(sha3_t *hash); + +/** + * Absorb input data in `src` of length `len` bytes into SHA3-512 hash + * context `hash`. Can be called iteratively to absorb input data in + * chunks. + * + * @param[in/out] hash SHA3-512 hash context. + * @param[in] src Input data. + * @param[in] len Input data length, in bytes. + * + * @return True if data was absorbed, and false otherwise (e.g., if context has already been finalized). + */ +_Bool sha3_512_absorb(sha3_t *hash, const uint8_t *src, const size_t len); + +/** + * Finalize SHA3-512 hash context and write 28 bytes of output to + * destination buffer `dst`. + * + * @param[in/out] hash SHA3-512 hash context. + * @param[out] dst Destination buffer. Must be at least 64 bytes in length. + */ +void sha3_512_final(sha3_t *hash, uint8_t dst[64]); + +/** * Hash input message in buffer `m` of length `m_len` bytes with * SHAKE128 (FIPS 202, section 6.2) and write 16 bytes of output to * destination buffer `dst`. |