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- /* Copyright (c) 2021, Google Inc.
- *
- * Permission to use, copy, modify, and/or distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
- * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
- * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
- * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
- #ifndef OPENSSL_HEADER_BLAKE2_H
- #define OPENSSL_HEADER_BLAKE2_H
- #include <openssl/base.h>
- #if defined(__cplusplus)
- extern "C" {
- #endif
- #define BLAKE2B256_DIGEST_LENGTH (256 / 8)
- #define BLAKE2B_CBLOCK 128
- struct blake2b_state_st {
- uint64_t h[8];
- uint64_t t_low, t_high;
- union {
- uint8_t bytes[BLAKE2B_CBLOCK];
- uint64_t words[16];
- } block;
- size_t block_used;
- };
- // BLAKE2B256_Init initialises |b2b| to perform a BLAKE2b-256 hash. There are no
- // pointers inside |b2b| thus release of |b2b| is purely managed by the caller.
- OPENSSL_EXPORT void BLAKE2B256_Init(BLAKE2B_CTX *b2b);
- // BLAKE2B256_Update appends |len| bytes from |data| to the digest being
- // calculated by |b2b|.
- OPENSSL_EXPORT void BLAKE2B256_Update(BLAKE2B_CTX *b2b, const void *data,
- size_t len);
- // BLAKE2B256_Final completes the digest calculated by |b2b| and writes
- // |BLAKE2B256_DIGEST_LENGTH| bytes to |out|.
- OPENSSL_EXPORT void BLAKE2B256_Final(uint8_t out[BLAKE2B256_DIGEST_LENGTH],
- BLAKE2B_CTX *b2b);
- // BLAKE2B256 writes the BLAKE2b-256 digset of |len| bytes from |data| to
- // |out|.
- OPENSSL_EXPORT void BLAKE2B256(const uint8_t *data, size_t len,
- uint8_t out[BLAKE2B256_DIGEST_LENGTH]);
- #if defined(__cplusplus)
- } // extern C
- #endif
- #endif // OPENSSL_HEADER_BLAKE2_H
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