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
177
178
179
180
181
182
183
184
185
186
187
188
189
|
/*
This code is written by kerukuro and released into public domain.
*/
#ifndef DIGESTPP_PROVIDERS_SM3_HPP
#define DIGESTPP_PROVIDERS_SM3_HPP
#include "../../detail/functions.hpp"
#include "../../detail/absorb_data.hpp"
#include <array>
namespace digestpp
{
namespace detail
{
namespace sm3_functions
{
static inline uint32_t xorf(uint32_t x, uint32_t y, uint32_t z)
{
return x ^ y ^ z;
}
static inline uint32_t ff1(uint32_t x, uint32_t y, uint32_t z)
{
return (x & y) ^ (x & z) ^ (y & z);
}
static inline uint32_t gg1(uint32_t x, uint32_t y, uint32_t z)
{
return (x & y) ^ (~x & z);
}
static inline uint32_t p0(uint32_t x)
{
return x ^ rotate_left(x, 9) ^ rotate_left(x, 17);
}
static inline uint32_t p1(uint32_t x)
{
return x ^ rotate_left(x, 15) ^ rotate_left(x, 23);
}
}
class sm3_provider
{
public:
static const bool is_xof = false;
sm3_provider()
{
}
~sm3_provider()
{
clear();
}
inline void init()
{
H[0] = 0x7380166f;
H[1] = 0x4914b2b9;
H[2] = 0x172442d7;
H[3] = 0xda8a0600;
H[4] = 0xa96f30bc;
H[5] = 0x163138aa;
H[6] = 0xe38dee4d;
H[7] = 0xb0fb0e4e;
pos = 0;
total = 0;
}
inline void update(const unsigned char* data, size_t len)
{
detail::absorb_bytes(data, len, 64, 64, m.data(), pos, total,
[this](const unsigned char* data, size_t len) { transform(data, len); });
}
inline void final(unsigned char* hash)
{
total += pos * 8;
m[pos++] = 0x80;
if (pos > 56)
{
if (pos != 64)
memset(&m[pos], 0, 64 - pos);
transform(m.data(), 1);
pos = 0;
}
memset(&m[pos], 0, 56 - pos);
uint64_t mlen = byteswap(total);
memcpy(&m[64 - 8], &mlen, 64 / 8);
transform(m.data(), 1);
for (int i = 0; i < 8; i++)
H[i] = byteswap(H[i]);
memcpy(hash, H.data(), 32);
}
inline void clear()
{
zero_memory(H);
zero_memory(m);
}
inline size_t hash_size() const { return 256; }
private:
inline void transform(const unsigned char* data, size_t num_blks)
{
for (uint64_t blk = 0; blk < num_blks; blk++)
{
uint32_t M[16];
for (uint32_t i = 0; i < 64 / 4; i++)
M[i] = byteswap(reinterpret_cast<const uint32_t*>(data)[blk * 16 + i]);
uint32_t W[68];
uint32_t W2[64];
for (int t = 0; t <= 15; t++)
W[t] = M[t];
for (int t = 16; t <= 67; t++)
W[t] = sm3_functions::p1(W[t - 16] ^ W[t - 9] ^ rotate_left(W[t - 3], 15)) ^ rotate_left(W[t - 13], 7) ^ W[t - 6];
for (int t = 0; t <= 63; t++)
W2[t] = W[t] ^ W[t + 4];
uint32_t a = H[0];
uint32_t b = H[1];
uint32_t c = H[2];
uint32_t d = H[3];
uint32_t e = H[4];
uint32_t f = H[5];
uint32_t g = H[6];
uint32_t h = H[7];
for (int t = 0; t <= 15; t++)
{
uint32_t ss1 = rotate_left((rotate_left(a, 12) + e + rotate_left(0x79cc4519U, t)), 7);
uint32_t ss2 = ss1 ^ rotate_left(a, 12);
uint32_t tt1 = sm3_functions::xorf(a, b, c) + d + ss2 + W2[t];
uint32_t tt2 = sm3_functions::xorf(e, f, g) + h + ss1 + W[t];
d = c;
c = rotate_left(b, 9);
b = a;
a = tt1;
h = g;
g = rotate_left(f, 19);
f = e;
e = sm3_functions::p0(tt2);
}
for (int t = 16; t <= 63; t++)
{
uint32_t ss1 = rotate_left((rotate_left(a, 12) + e + rotate_left(0x7a879d8aU, t)), 7);
uint32_t ss2 = ss1 ^ rotate_left(a, 12);
uint32_t tt1 = sm3_functions::ff1(a, b, c) + d + ss2 + W2[t];
uint32_t tt2 = sm3_functions::gg1(e, f, g) + h + ss1 + W[t];
d = c;
c = rotate_left(b, 9);
b = a;
a = tt1;
h = g;
g = rotate_left(f, 19);
f = e;
e = sm3_functions::p0(tt2);
}
H[0] ^= a;
H[1] ^= b;
H[2] ^= c;
H[3] ^= d;
H[4] ^= e;
H[5] ^= f;
H[6] ^= g;
H[7] ^= h;
}
}
std::array<uint32_t, 8> H;
std::array<unsigned char, 64> m;
size_t pos;
uint64_t total;
};
} // namespace detail
} // namespace digestpp
#endif
|
