1 /* $OpenBSD: blake2s.h,v 1.3 2023/02/03 18:31:16 miod Exp $ */
2 /*
3 * Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
4 * Copyright (C) 2019-2020 Matt Dunwoodie <ncon@noconroy.net>.
5 *
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18
19 #include <sys/types.h>
20 #include <sys/systm.h>
21
22 #ifndef _BLAKE2S_H_
23 #define _BLAKE2S_H_
24
25 enum blake2s_lengths {
26 BLAKE2S_BLOCK_SIZE = 64,
27 BLAKE2S_HASH_SIZE = 32,
28 BLAKE2S_KEY_SIZE = 32
29 };
30
31 struct blake2s_state {
32 uint32_t h[8];
33 uint32_t t[2];
34 uint32_t f[2];
35 uint8_t buf[BLAKE2S_BLOCK_SIZE];
36 unsigned int buflen;
37 unsigned int outlen;
38 };
39
40 void blake2s_init(struct blake2s_state *state, size_t outlen);
41 void blake2s_init_key(struct blake2s_state *state, size_t outlen,
42 const void *key, size_t keylen);
43 void blake2s_update(struct blake2s_state *state, const uint8_t *in,
44 size_t inlen);
45 void blake2s_final(struct blake2s_state *state, uint8_t *out);
46
47 static inline void
blake2s(uint8_t * out,const uint8_t * in,const uint8_t * key,size_t outlen,size_t inlen,size_t keylen)48 blake2s(uint8_t *out, const uint8_t *in, const uint8_t *key,
49 size_t outlen, size_t inlen, size_t keylen)
50 {
51 struct blake2s_state state;
52
53 KKASSERT((in != NULL || inlen == 0) &&
54 out != NULL && outlen <= BLAKE2S_HASH_SIZE &&
55 (key != NULL || keylen == 0) && keylen <= BLAKE2S_KEY_SIZE);
56
57 if (keylen > 0)
58 blake2s_init_key(&state, outlen, key, keylen);
59 else
60 blake2s_init(&state, outlen);
61
62 blake2s_update(&state, in, inlen);
63 blake2s_final(&state, out);
64 }
65
66 #endif /* _BLAKE2S_H_ */
67