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
|
/*
BLAKE2 reference source code package - reference C implementations
Copyright 2012, Samuel Neves <sneves@dei.uc.pt>. You may use this under the
terms of the CC0, the OpenSSL Licence, or the Apache Public License 2.0, at
your option. The terms of these licenses can be found at:
- CC0 1.0 Universal : https://creativecommons.org/publicdomain/zero/1.0
- OpenSSL license : https://www.openssl.org/source/license.html
- Apache 2.0 : https://www.apache.org/licenses/LICENSE-2.0
More information about the BLAKE2 hash function can be found at
https://blake2.net.
*/
#ifndef BLAKE2_IMPL_H
#define BLAKE2_IMPL_H
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#ifndef WORDS_BIGENDIAN
# define NATIVE_LITTLE_ENDIAN 1
#endif
#include <stdint.h>
#include <string.h>
#if !defined(__cplusplus) && (!defined(__STDC_VERSION__) || __STDC_VERSION__ < 199901L)
#if defined(_MSC_VER)
#define BLAKE2_INLINE __inline
#elif defined(__GNUC__)
#define BLAKE2_INLINE __inline__
#else
#define BLAKE2_INLINE
#endif
#else
#define BLAKE2_INLINE inline
#endif
static BLAKE2_INLINE uint32_t load32( const void *src )
{
#if defined(NATIVE_LITTLE_ENDIAN)
uint32_t w;
memcpy(&w, src, sizeof w);
return w;
#else
const uint8_t *p = ( const uint8_t * )src;
return (( uint32_t )( p[0] ) << 0) |
(( uint32_t )( p[1] ) << 8) |
(( uint32_t )( p[2] ) << 16) |
(( uint32_t )( p[3] ) << 24) ;
#endif
}
static BLAKE2_INLINE uint64_t load64( const void *src )
{
#if defined(NATIVE_LITTLE_ENDIAN)
uint64_t w;
memcpy(&w, src, sizeof w);
return w;
#else
const uint8_t *p = ( const uint8_t * )src;
return (( uint64_t )( p[0] ) << 0) |
(( uint64_t )( p[1] ) << 8) |
(( uint64_t )( p[2] ) << 16) |
(( uint64_t )( p[3] ) << 24) |
(( uint64_t )( p[4] ) << 32) |
(( uint64_t )( p[5] ) << 40) |
(( uint64_t )( p[6] ) << 48) |
(( uint64_t )( p[7] ) << 56) ;
#endif
}
static BLAKE2_INLINE uint16_t load16( const void *src )
{
#if defined(NATIVE_LITTLE_ENDIAN)
uint16_t w;
memcpy(&w, src, sizeof w);
return w;
#else
const uint8_t *p = ( const uint8_t * )src;
return ( uint16_t )((( uint32_t )( p[0] ) << 0) |
(( uint32_t )( p[1] ) << 8));
#endif
}
static BLAKE2_INLINE void store16( void *dst, uint16_t w )
{
#if defined(NATIVE_LITTLE_ENDIAN)
memcpy(dst, &w, sizeof w);
#else
uint8_t *p = ( uint8_t * )dst;
*p++ = ( uint8_t )w; w >>= 8;
*p++ = ( uint8_t )w;
#endif
}
static BLAKE2_INLINE void store32( void *dst, uint32_t w )
{
#if defined(NATIVE_LITTLE_ENDIAN)
memcpy(dst, &w, sizeof w);
#else
uint8_t *p = ( uint8_t * )dst;
p[0] = (uint8_t)(w >> 0);
p[1] = (uint8_t)(w >> 8);
p[2] = (uint8_t)(w >> 16);
p[3] = (uint8_t)(w >> 24);
#endif
}
static BLAKE2_INLINE void store64( void *dst, uint64_t w )
{
#if defined(NATIVE_LITTLE_ENDIAN)
memcpy(dst, &w, sizeof w);
#else
uint8_t *p = ( uint8_t * )dst;
p[0] = (uint8_t)(w >> 0);
p[1] = (uint8_t)(w >> 8);
p[2] = (uint8_t)(w >> 16);
p[3] = (uint8_t)(w >> 24);
p[4] = (uint8_t)(w >> 32);
p[5] = (uint8_t)(w >> 40);
p[6] = (uint8_t)(w >> 48);
p[7] = (uint8_t)(w >> 56);
#endif
}
static BLAKE2_INLINE uint64_t load48( const void *src )
{
const uint8_t *p = ( const uint8_t * )src;
return (( uint64_t )( p[0] ) << 0) |
(( uint64_t )( p[1] ) << 8) |
(( uint64_t )( p[2] ) << 16) |
(( uint64_t )( p[3] ) << 24) |
(( uint64_t )( p[4] ) << 32) |
(( uint64_t )( p[5] ) << 40) ;
}
static BLAKE2_INLINE void store48( void *dst, uint64_t w )
{
uint8_t *p = ( uint8_t * )dst;
p[0] = (uint8_t)(w >> 0);
p[1] = (uint8_t)(w >> 8);
p[2] = (uint8_t)(w >> 16);
p[3] = (uint8_t)(w >> 24);
p[4] = (uint8_t)(w >> 32);
p[5] = (uint8_t)(w >> 40);
}
static BLAKE2_INLINE uint32_t rotr32( const uint32_t w, const unsigned c )
{
return ( w >> c ) | ( w << ( 32 - c ) );
}
static BLAKE2_INLINE uint64_t rotr64( const uint64_t w, const unsigned c )
{
return ( w >> c ) | ( w << ( 64 - c ) );
}
/* prevents compiler optimizing out memset() */
static BLAKE2_INLINE void secure_zero_memory(void *v, size_t n)
{
static void *(*const volatile memset_v)(void *, int, size_t) = &memset;
memset_v(v, 0, n);
}
#endif
|
