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
|
#pragma once
#include <stddef.h>
#include <stdint.h>
struct BLAKE2s_param {
uint8_t outlen; /* digest length */
uint8_t keylen; /* key length */
uint8_t fanout;
uint8_t depth;
uint32_t leaf_length;
uint32_t node_offset;
uint16_t node_offset_ex;
uint8_t node_depth;
uint8_t inner_length;
uint64_t salt;
uint64_t personalization;
};
struct BLAKE2s_ctx {
uint8_t b[64]; /* input buffer */
size_t c; /* pointer for b[] */
uint32_t h[8]; /* chained state vector h */
uint32_t t[2]; /* total number of bytes */
struct BLAKE2s_param param; /* parameter block */
};
/**
* 3.1 Mixing Function G
*/
void G(uint32_t V[16], unsigned a, unsigned b, unsigned c, unsigned d, uint32_t x, uint32_t y);
/**
* 3.2 Compression Function F
* @param t: 2w-bit offset counter t
* @param f: final block indicator flag f
*/
void F(struct BLAKE2s_ctx *context, uint32_t m[16], uint32_t f);
int BLAKE2s_init(struct BLAKE2s_ctx *ctx, uint8_t outlen, const void *key, uint8_t keylen);
void BLAKE2s_update(struct BLAKE2s_ctx *ctx, const void *d, size_t dd);
void BLAKE2s_final(struct BLAKE2s_ctx *ctx, void *out);
/* All-in-one convenience function. */
static __inline__ int
BLAKE2s(void *out, uint8_t outlen, /* return buffer for digest */
const void *key, uint8_t keylen, /* optional secret key */
const void *in, size_t inlen) /* data to be hashed */
{
struct BLAKE2s_ctx ctx;
if (BLAKE2s_init(&ctx, outlen, key, keylen)) return -1;
BLAKE2s_update(&ctx, in, inlen);
BLAKE2s_final(&ctx, out);
return 0;
}
|