1/*
2 * Copyright 2016-2017 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the OpenSSL license (the "License").  You may not use
5 * this file except in compliance with the License.  You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10/*
11 * Derived from the BLAKE2 reference implementation written by Samuel Neves.
12 * Copyright 2012, Samuel Neves <sneves@dei.uc.pt>
13 * More information about the BLAKE2 hash function and its implementations
14 * can be found at https://blake2.net.
15 */
16
17#include <stddef.h>
18
19#define BLAKE2S_BLOCKBYTES    64
20#define BLAKE2S_OUTBYTES      32
21#define BLAKE2S_KEYBYTES      32
22#define BLAKE2S_SALTBYTES     8
23#define BLAKE2S_PERSONALBYTES 8
24
25#define BLAKE2B_BLOCKBYTES    128
26#define BLAKE2B_OUTBYTES      64
27#define BLAKE2B_KEYBYTES      64
28#define BLAKE2B_SALTBYTES     16
29#define BLAKE2B_PERSONALBYTES 16
30
31struct blake2s_param_st {
32    uint8_t  digest_length; /* 1 */
33    uint8_t  key_length;    /* 2 */
34    uint8_t  fanout;        /* 3 */
35    uint8_t  depth;         /* 4 */
36    uint8_t  leaf_length[4];/* 8 */
37    uint8_t  node_offset[6];/* 14 */
38    uint8_t  node_depth;    /* 15 */
39    uint8_t  inner_length;  /* 16 */
40    uint8_t  salt[BLAKE2S_SALTBYTES]; /* 24 */
41    uint8_t  personal[BLAKE2S_PERSONALBYTES];  /* 32 */
42};
43
44typedef struct blake2s_param_st BLAKE2S_PARAM;
45
46struct blake2s_ctx_st {
47    uint32_t h[8];
48    uint32_t t[2];
49    uint32_t f[2];
50    uint8_t  buf[BLAKE2S_BLOCKBYTES];
51    size_t   buflen;
52};
53
54struct blake2b_param_st {
55    uint8_t  digest_length; /* 1 */
56    uint8_t  key_length;    /* 2 */
57    uint8_t  fanout;        /* 3 */
58    uint8_t  depth;         /* 4 */
59    uint8_t  leaf_length[4];/* 8 */
60    uint8_t  node_offset[8];/* 16 */
61    uint8_t  node_depth;    /* 17 */
62    uint8_t  inner_length;  /* 18 */
63    uint8_t  reserved[14];  /* 32 */
64    uint8_t  salt[BLAKE2B_SALTBYTES]; /* 48 */
65    uint8_t  personal[BLAKE2B_PERSONALBYTES];  /* 64 */
66};
67
68typedef struct blake2b_param_st BLAKE2B_PARAM;
69
70struct blake2b_ctx_st {
71    uint64_t h[8];
72    uint64_t t[2];
73    uint64_t f[2];
74    uint8_t  buf[BLAKE2B_BLOCKBYTES];
75    size_t   buflen;
76};
77
78#define BLAKE2B_DIGEST_LENGTH 64
79#define BLAKE2S_DIGEST_LENGTH 32
80
81typedef struct blake2s_ctx_st BLAKE2S_CTX;
82typedef struct blake2b_ctx_st BLAKE2B_CTX;
83
84int BLAKE2b_Init(BLAKE2B_CTX *c);
85int BLAKE2b_Update(BLAKE2B_CTX *c, const void *data, size_t datalen);
86int BLAKE2b_Final(unsigned char *md, BLAKE2B_CTX *c);
87
88int BLAKE2s_Init(BLAKE2S_CTX *c);
89int BLAKE2s_Update(BLAKE2S_CTX *c, const void *data, size_t datalen);
90int BLAKE2s_Final(unsigned char *md, BLAKE2S_CTX *c);
91