diff options
| -rw-r--r-- | sha3.h | 122 |
1 files changed, 119 insertions, 3 deletions
@@ -25,7 +25,7 @@ * - TupleHash256 and TupleHash256-XOF * - ParallelHash128 and ParallelHash128-XOF * - ParallelHash256 and ParallelHash256-XOF - * - TurboHash128 and TurboHash256 (incomplete) + * - TurboHash128 and TurboHash256 */ #ifndef SHA3_H @@ -1136,13 +1136,129 @@ void parallelhash256_xof_squeeze(parallelhash_t *hash, uint8_t *dst, const size_ * parallel. * * @param[in] params ParallelHash configuration parameters. - * @param[in] src Input data buffer. - * @param[in] src_len Input data buffer length, in bytes. + * @param[in] src Source buffer. + * @param[in] src_len Source buffer length, in bytes. * @param[out] dst Destination buffer. * @param[in] dst_len Destination buffer length, in bytes. */ void parallelhash256_xof_once(const parallelhash_params_t params, const uint8_t *src, const size_t src_len, uint8_t *dst, const size_t dst_len); +/** + * Initialize internal TurboSHAKE128 context, absorb `src_len` bytes of + * input from in source buffer `src`, then squeeze `dst_len` bytes of output + * into destination buffer `dst`. + * + * @param[in] src Source buffer. + * @param[in] src_len Source buffer length, in bytes. + * @param[out] dst Destination buffer. + * @param[in] dst_len Destination buffer length, in bytes. + */ +void turboshake128(const uint8_t *src, const size_t src_len, uint8_t *dst, const size_t dst_len); + +/** + * Initialize internal TurboSHAKE256 context, absorb `src_len` bytes of + * input from in source buffer `src`, then squeeze `dst_len` bytes of output + * into destination buffer `dst`. + * + * @param[in] src Source buffer. + * @param[in] src_len Source buffer length, in bytes. + * @param[out] dst Destination buffer. + * @param[in] dst_len Destination buffer length, in bytes. + */ +void turboshake256(const uint8_t *src, const size_t src_len, uint8_t *dst, const size_t dst_len); + +// TurboShake XOF context. +typedef struct { + sha3_xof_t xof; + uint8_t pad; +} turboshake_t; + +/** + * Initialize TurboSHAKE128 context. + * + * @param[out] ts TurboSHAKE128 context. + */ +void turboshake128_init(turboshake_t *ts); + +/** + * Initialize TurboSHAKE128 context with custom padding byte. The + * custom padding byte can be used as a domain separator and must be in + * the range [0x01, 0x7f]. + * + * @param[out] ts TurboSHAKE128 context. + * @param[in] pad Padding byte (used for domain separation). + * + * @return False if the padding byte is out of range and true otherwise. + */ +_Bool turboshake128_init_custom(turboshake_t *ts, const uint8_t pad); + +/** + * Absorb `src_len` bytes of input from in source buffer `src` into + * TurboSHAKE128 context `ts`. Can be called iteratively to absorb + * input data in chunks. + * + * @param[in/out] ts TurboSHAKE128 context. + * @param[in] src Source buffer. + * @param[in] len Source buffer length, in bytes. + * + * @return True if data was absorbed, and false otherwise (e.g., if context has already been finalized). + */ +_Bool turboshake128_absorb(turboshake_t *ts, const uint8_t *src, const size_t len); + +/** + * Squeeze `dst_len` bytes of output into destination buffer `dst` from + * TurboSHAKE128 context `ts`. Can be called iteratively to squeeze + * output data in chunks. + * + * @param[in/out] ts TurboSHAKE128 context. + * @param[out] dst Destination buffer. + * @param[in] len Destination buffer length, in bytes. + */ +void turboshake128_squeeze(turboshake_t *ts, uint8_t *dst, const size_t len); + +/** + * Initialize TurboSHAKE256 context. + * + * @param[out] ts TurboSHAKE256 context. + */ +void turboshake256_init(turboshake_t *ts); + +/** + * Initialize TurboSHAKE256 context with custom padding byte. The + * custom padding byte can be used as a domain separator and must be in + * the range [0x01, 0x7f]. + * + * @param[out] ts TurboSHAKE256 context. + * @param[in] pad Padding byte (used for domain separation). + * + * @return False if the padding byte is out of range and true otherwise. + */ +_Bool turboshake256_init_custom(turboshake_t *ts, const uint8_t pad); + +/** + * Absorb `src_len` bytes of input from in source buffer `src` into + * TurboSHAKE256 context `ts`. Can be called iteratively to absorb + * input data in chunks. + * + * @param[in/out] ts TurboSHAKE256 context. + * @param[in] src Source buffer. + * @param[in] len Source buffer length, in bytes. + * + * @return True if data was absorbed, and false otherwise (e.g., if context has already been finalized). + */ +_Bool turboshake256_absorb(turboshake_t *ts, const uint8_t *src, const size_t len); + +/** + * Squeeze `dst_len` bytes of output into destination buffer `dst` from + * TurboSHAKE128 context `ts`. Can be called iteratively to squeeze + * output data in chunks. + * + * @param[in/out] ts TurboSHAKE128 context. + * @param[out] dst Destination buffer. + * @param[in] len Destination buffer length, in bytes. + */ +void turboshake256_squeeze(turboshake_t *ts, uint8_t *dst, const size_t len); + #ifdef __cplusplus } #endif /* __cplusplus */ |