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
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
|
/* sha3.h
*
* The sha3 hash function (aka Keccak).
*/
/* nettle, low-level cryptographics library
*
* Copyright (C) 2012 Niels Möller
*
* The nettle library is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or (at your
* option) any later version.
*
* The nettle library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with the nettle library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02111-1301, USA.
*/
#ifndef NETTLE_SHA3_H_INCLUDED
#define NETTLE_SHA3_H_INCLUDED
#include "nettle-types.h"
#ifdef __cplusplus
extern "C" {
#endif
#define sha3_permute nettle_sha3_permute
#define _sha3_update _nettle_sha3_update
#define _sha3_pad _nettle_sha3_pad
#define sha3_224_init nettle_sha3_224_init
#define sha3_224_update nettle_sha3_224_update
#define sha3_224_digest nettle_sha3_224_digest
#define sha3_256_init nettle_sha3_256_init
#define sha3_256_update nettle_sha3_256_update
#define sha3_256_digest nettle_sha3_256_digest
#define sha3_384_init nettle_sha3_384_init
#define sha3_384_update nettle_sha3_384_update
#define sha3_384_digest nettle_sha3_384_digest
#define sha3_512_init nettle_sha3_512_init
#define sha3_512_update nettle_sha3_512_update
#define sha3_512_digest nettle_sha3_512_digest
/* The sha3 state is a 5x5 matrix of 64-bit words. In the notation of
Keccak description, S[x,y] is element x + 5*y, so if x is
interpreted as the row index and y the column index, it is stored
in column-major order. */
#define SHA3_STATE_LENGTH 25
/* The "width" is 1600 bits or 200 octets */
struct sha3_state
{
uint64_t a[SHA3_STATE_LENGTH];
};
void
sha3_permute (struct sha3_state *state);
unsigned
_sha3_update (struct sha3_state *state,
unsigned block_size, uint8_t *block,
unsigned pos,
unsigned length, const uint8_t *data);
void
_sha3_pad (struct sha3_state *state,
unsigned block_size, uint8_t *block, unsigned pos);
/* The "capacity" is set to 2*(digest size), 512 bits or 64 octets.
The "rate" is the width - capacity, or width - 2 * (digest
size). */
#define SHA3_224_DIGEST_SIZE 28
#define SHA3_224_DATA_SIZE 144
#define SHA3_256_DIGEST_SIZE 32
#define SHA3_256_DATA_SIZE 136
#define SHA3_384_DIGEST_SIZE 48
#define SHA3_384_DATA_SIZE 104
#define SHA3_512_DIGEST_SIZE 64
#define SHA3_512_DATA_SIZE 72
struct sha3_224_ctx
{
struct sha3_state state;
unsigned index;
uint8_t block[SHA3_224_DATA_SIZE];
};
void
sha3_224_init (struct sha3_224_ctx *ctx);
void
sha3_224_update (struct sha3_224_ctx *ctx,
unsigned length,
const uint8_t *data);
void
sha3_224_digest(struct sha3_224_ctx *ctx,
unsigned length,
uint8_t *digest);
struct sha3_256_ctx
{
struct sha3_state state;
unsigned index;
uint8_t block[SHA3_256_DATA_SIZE];
};
void
sha3_256_init (struct sha3_256_ctx *ctx);
void
sha3_256_update (struct sha3_256_ctx *ctx,
unsigned length,
const uint8_t *data);
void
sha3_256_digest(struct sha3_256_ctx *ctx,
unsigned length,
uint8_t *digest);
struct sha3_384_ctx
{
struct sha3_state state;
unsigned index;
uint8_t block[SHA3_384_DATA_SIZE];
};
void
sha3_384_init (struct sha3_384_ctx *ctx);
void
sha3_384_update (struct sha3_384_ctx *ctx,
unsigned length,
const uint8_t *data);
void
sha3_384_digest(struct sha3_384_ctx *ctx,
unsigned length,
uint8_t *digest);
struct sha3_512_ctx
{
struct sha3_state state;
unsigned index;
uint8_t block[SHA3_512_DATA_SIZE];
};
void
sha3_512_init (struct sha3_512_ctx *ctx);
void
sha3_512_update (struct sha3_512_ctx *ctx,
unsigned length,
const uint8_t *data);
void
sha3_512_digest(struct sha3_512_ctx *ctx,
unsigned length,
uint8_t *digest);
#ifdef __cplusplus
}
#endif
#endif /* NETTLE_SHA3_H_INCLUDED */
|
