ref: 127dfcfefaec2397cb462ef797befd0b3611864e
dir: /third_party/boringssl/src/include/openssl/blake2.h/
/* 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