1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
|
/* SPDX-License-Identifier: GPL-2.0 OR MIT */
/*
* Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
*/
#ifndef _CRYPTO_BLAKE2S_H
#define _CRYPTO_BLAKE2S_H
#include <string.h>
#include <linux/types.h>
#define BLAKE2S_BLOCK_SIZE 64
struct blake2s_ctx {
u32 h[8];
u32 t[2];
u32 f[2];
u8 buf[BLAKE2S_BLOCK_SIZE];
unsigned int buflen;
unsigned int outlen;
};
enum blake2s_iv {
BLAKE2S_IV0 = 0x6A09E667UL,
BLAKE2S_IV1 = 0xBB67AE85UL,
BLAKE2S_IV2 = 0x3C6EF372UL,
BLAKE2S_IV3 = 0xA54FF53AUL,
BLAKE2S_IV4 = 0x510E527FUL,
BLAKE2S_IV5 = 0x9B05688CUL,
BLAKE2S_IV6 = 0x1F83D9ABUL,
BLAKE2S_IV7 = 0x5BE0CD19UL,
};
static inline void __blake2s_init(struct blake2s_ctx *ctx, size_t outlen,
const void *key, size_t keylen)
{
ctx->h[0] = BLAKE2S_IV0 ^ (0x01010000 | keylen << 8 | outlen);
ctx->h[1] = BLAKE2S_IV1;
ctx->h[2] = BLAKE2S_IV2;
ctx->h[3] = BLAKE2S_IV3;
ctx->h[4] = BLAKE2S_IV4;
ctx->h[5] = BLAKE2S_IV5;
ctx->h[6] = BLAKE2S_IV6;
ctx->h[7] = BLAKE2S_IV7;
ctx->t[0] = 0;
ctx->t[1] = 0;
ctx->f[0] = 0;
ctx->f[1] = 0;
ctx->buflen = 0;
ctx->outlen = outlen;
if (keylen) {
memcpy(ctx->buf, key, keylen);
memset(&ctx->buf[keylen], 0, BLAKE2S_BLOCK_SIZE - keylen);
ctx->buflen = BLAKE2S_BLOCK_SIZE;
}
}
static inline void blake2s_init(struct blake2s_ctx *ctx, size_t outlen)
{
__blake2s_init(ctx, outlen, NULL, 0);
}
static inline void blake2s_init_key(struct blake2s_ctx *ctx, size_t outlen,
const void *key, size_t keylen)
{
__blake2s_init(ctx, outlen, key, keylen);
}
void blake2s_update(struct blake2s_ctx *ctx, const u8 *in, size_t inlen);
void blake2s_final(struct blake2s_ctx *ctx, u8 *out);
#endif /* _CRYPTO_BLAKE2S_H */
|
