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/* $OpenBSD: blake2s.h,v 1.3 2023/02/03 18:31:16 miod Exp $ */
/*
* Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
* Copyright (C) 2019-2020 Matt Dunwoodie <ncon@noconroy.net>.
*
* Permission to use, copy, modify, and 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.
*/
#include <sys/types.h>
#ifndef _BLAKE2S_H_
#define _BLAKE2S_H_
enum blake2s_lengths {
BLAKE2S_BLOCK_SIZE = 64,
BLAKE2S_HASH_SIZE = 32,
BLAKE2S_KEY_SIZE = 32
};
struct blake2s_state {
uint32_t h[8];
uint32_t t[2];
uint32_t f[2];
uint8_t buf[BLAKE2S_BLOCK_SIZE];
unsigned int buflen;
unsigned int outlen;
};
void blake2s_init(struct blake2s_state *state, const size_t outlen);
void blake2s_init_key(struct blake2s_state *state, const size_t outlen,
const void *key, const size_t keylen);
void blake2s_update(struct blake2s_state *state, const uint8_t *in, size_t inlen);
void blake2s_final(struct blake2s_state *state, uint8_t *out);
static inline void blake2s(
uint8_t *out, const uint8_t *in, const uint8_t *key,
const size_t outlen, const size_t inlen, const size_t keylen)
{
struct blake2s_state state;
KASSERT((in != NULL || inlen == 0) &&
out != NULL && outlen <= BLAKE2S_HASH_SIZE &&
(key != NULL || keylen == 0) && keylen <= BLAKE2S_KEY_SIZE);
if (keylen)
blake2s_init_key(&state, outlen, key, keylen);
else
blake2s_init(&state, outlen);
blake2s_update(&state, in, inlen);
blake2s_final(&state, out);
}
void blake2s_hmac(uint8_t *out, const uint8_t *in, const uint8_t *key,
const size_t outlen, const size_t inlen, const size_t keylen);
#endif /* _BLAKE2S_H_ */
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