diff options
Diffstat (limited to 'sha3.h')
| -rw-r--r-- | sha3.h | 188 |
1 files changed, 185 insertions, 3 deletions
@@ -103,7 +103,7 @@ void sha3_256_init(sha3_t *hash); _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 + * Finalize SHA3-256 hash context and write 32 bytes of output to * destination buffer `dst`. * * @param[in/out] hash SHA3-256 hash context. @@ -143,7 +143,7 @@ void sha3_384_init(sha3_t *hash); _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 + * Finalize SHA3-384 hash context and write 48 bytes of output to * destination buffer `dst`. * * @param[in/out] hash SHA3-384 hash context. @@ -183,7 +183,7 @@ void sha3_512_init(sha3_t *hash); _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 + * Finalize SHA3-512 hash context and write 64 bytes of output to * destination buffer `dst`. * * @param[in/out] hash SHA3-512 hash context. @@ -192,6 +192,188 @@ _Bool sha3_512_absorb(sha3_t *hash, const uint8_t *src, const size_t len); void sha3_512_final(sha3_t *hash, uint8_t dst[64]); /** + * Calculate HMAC-SHA3-224 (FIPS 202, Section 7) of key in buffer `k` of + * length `k_len` and input message in buffer `m` of length `m_len` + * bytes and write 28 bytes of output to destination buffer `dst`. + * + * @param[in] k Key. + * @param[in] k_len Key length, in bytes. + * @param[in] m Input message. + * @param[in] m_len Input message length, in bytes. + * @param[out] dst Destination array. Must be at least 28 bytes in length. + */ +void hmac_sha3_224(const uint8_t *k, const size_t k_len, const uint8_t *m, const size_t m_len, uint8_t dst[28]); + +/** + * Calculate HMAC-SHA3-256 (FIPS 202, Section 7) of key in buffer `k` of + * length `k_len` and input message in buffer `m` of length `m_len` + * bytes and write 32 bytes of output to destination buffer `dst`. + * + * @param[in] k Key. + * @param[in] k_len Key length, in bytes. + * @param[in] m Input message. + * @param[in] m_len Input message length, in bytes. + * @param[out] dst Destination array. Must be at least 32 bytes in length. + */ +void hmac_sha3_256(const uint8_t *k, const size_t k_len, const uint8_t *m, const size_t m_len, uint8_t dst[32]); + +/** + * Calculate HMAC-SHA3-384 (FIPS 202, Section 7) of key in buffer `k` of + * length `k_len` and input message in buffer `m` of length `m_len` + * bytes and write 48 bytes of output to destination buffer `dst`. + * + * @param[in] k Key. + * @param[in] k_len Key length, in bytes. + * @param[in] m Input message. + * @param[in] m_len Input message length, in bytes. + * @param[out] dst Destination array. Must be at least 48 bytes in length. + */ +void hmac_sha3_384(const uint8_t *k, const size_t k_len, const uint8_t *m, const size_t m_len, uint8_t dst[48]); + +/** + * Calculate HMAC-SHA3-512 (FIPS 202, Section 7) of key in buffer `k` of + * length `k_len` and input message in buffer `m` of length `m_len` + * bytes and write 64 bytes of output to destination buffer `dst`. + * + * @param[in] k Key. + * @param[in] k_len Key length, in bytes. + * @param[in] m Input message. + * @param[in] m_len Input message length, in bytes. + * @param[out] dst Destination array. Must be at least 64 bytes in length. + */ +void hmac_sha3_512(const uint8_t *k, const size_t k_len, const uint8_t *m, const size_t m_len, uint8_t dst[64]); + +// HMAC-SHA3 (Hash-based Message Authentication Code) context. +typedef struct { + sha3_t inner, outer; + _Bool finalized; +} hmac_sha3_t; + +/** + * Initialize HMAC-SHA3-224 (FIPS 202, Section 7) context. + * + * @param[out] hmac HMAC-SHA3-224 context. + * @param[in] k Key. + * @param[in] k_len Key length, in bytes. + */ +void hmac_sha3_224_init(hmac_sha3_t *hmac, const uint8_t *k, const size_t k_len); + +/** + * Absorb input data in `src` of length `len` bytes into HMAC-SHA3-224 + * context `hmac`. Can be called iteratively to absorb input data in + * chunks. + * + * @param[in/out] hmac HMAC-SHA3-224 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 hmac_sha3_224_absorb(hmac_sha3_t *hmac, const uint8_t *src, const size_t len); + +/** + * Finalize HMAC-SHA3-224 hash context and write 28 bytes of output to + * destination buffer `dst`. + * + * @param[in/out] hmac HMAC-SHA3-224 hash context. + * @param[out] dst Destination buffer. Must be at least 28 bytes in length. + */ +void hmac_sha3_224_final(hmac_sha3_t *hmac, uint8_t dst[28]); + +/** + * Initialize HMAC-SHA3-256 (FIPS 202, Section 7) context. + * + * @param[out] hmac HMAC-SHA3-256 context. + * @param[in] k Key. + * @param[in] k_len Key length, in bytes. + */ +void hmac_sha3_256_init(hmac_sha3_t *hmac, const uint8_t *k, const size_t k_len); + +/** + * Absorb input data in `src` of length `len` bytes into HMAC-SHA3-256 + * context `hmac`. Can be called iteratively to absorb input data in + * chunks. + * + * @param[in/out] hmac HMAC-SHA3-256 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 hmac_sha3_256_absorb(hmac_sha3_t *hmac, const uint8_t *src, const size_t len); + +/** + * Finalize HMAC-SHA3-256 hash context and write 32 bytes of output to + * destination buffer `dst`. + * + * @param[in/out] hmac HMAC-SHA3-256 hash context. + * @param[out] dst Destination buffer. Must be at least 32 bytes in length. + */ +void hmac_sha3_256_final(hmac_sha3_t *hmac, uint8_t dst[32]); + +/** + * Initialize HMAC-SHA3-384 (FIPS 202, Section 7) context. + * + * @param[out] hmac HMAC-SHA3-384 context. + * @param[in] k Key. + * @param[in] k_len Key length, in bytes. + */ +void hmac_sha3_384_init(hmac_sha3_t *hmac, const uint8_t *k, const size_t k_len); + +/** + * Absorb input data in `src` of length `len` bytes into HMAC-SHA3-384 + * context `hmac`. Can be called iteratively to absorb input data in + * chunks. + * + * @param[in/out] hmac HMAC-SHA3-384 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 hmac_sha3_384_absorb(hmac_sha3_t *hmac, const uint8_t *src, const size_t len); + +/** + * Finalize HMAC-SHA3-384 hash context and write 48 bytes of output to + * destination buffer `dst`. + * + * @param[in/out] hmac HMAC-SHA3-384 hash context. + * @param[out] dst Destination buffer. Must be at least 48 bytes in length. + */ +void hmac_sha3_384_final(hmac_sha3_t *hmac, uint8_t dst[48]); + +/** + * Initialize HMAC-SHA3-512 (FIPS 202, Section 7) context. + * + * @param[out] hmac HMAC-SHA3-512 context. + * @param[in] k Key. + * @param[in] k_len Key length, in bytes. + */ +void hmac_sha3_512_init(hmac_sha3_t *hmac, const uint8_t *k, const size_t k_len); + +/** + * Absorb input data in `src` of length `len` bytes into HMAC-SHA3-512 + * context `hmac`. Can be called iteratively to absorb input data in + * chunks. + * + * @param[in/out] hmac HMAC-SHA3-512 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 hmac_sha3_512_absorb(hmac_sha3_t *hmac, const uint8_t *src, const size_t len); + +/** + * Finalize HMAC-SHA3-512 hash context and write 64 bytes of output to + * destination buffer `dst`. + * + * @param[in/out] hmac HMAC-SHA3-512 hash context. + * @param[out] dst Destination buffer. Must be at least 64 bytes in length. + */ +void hmac_sha3_512_final(hmac_sha3_t *hmac, 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`. |