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
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
|
#include "../crypto.h"
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
#define bs 64
struct sha256_hash sha256_init(){
struct sha256_hash a = {.h0 = 0x6a09e667, .h1 = 0xbb67ae85, .h2 = 0x3c6ef372, .h3 = 0xa54ff53a, .h4 = 0x510e527f, .h5 = 0x9b05688c, .h6 = 0x1f83d9ab, .h7 = 0x5be0cd19,
.total = 0, .bufflen = 0};
a.buffer = calloc(sizeof * a.buffer, bs);
return a;
}
struct sha256_hash sha256_init_l(lua_State* L){
struct sha256_hash a = {.h0 = 0x6a09e667, .h1 = 0xbb67ae85, .h2 = 0x3c6ef372, .h3 = 0xa54ff53a, .h4 = 0x510e527f, .h5 = 0x9b05688c, .h6 = 0x1f83d9ab, .h7 = 0x5be0cd19,
.total = 0, .bufflen = 0};
a.buffer = lua_newuserdata(L, sizeof * a.buffer * bs);
memset(a.buffer, 0, bs);
return a;
}
struct sha256_hash sha224_init(){
struct sha256_hash a = sha256_init();
a.h0 = 0xc1059ed8;
a.h1 = 0x367cd507;
a.h2 = 0x3070dd17;
a.h3 = 0xf70e5939;
a.h4 = 0xffc00b31;
a.h5 = 0x68581511;
a.h6 = 0x64f98fa7;
a.h7 = 0xbefa4fa4;
return a;
}
struct sha256_hash sha224_init_l(lua_State* L){
struct sha256_hash a = sha256_init_l(L);
a.h0 = 0xc1059ed8;
a.h1 = 0x367cd507;
a.h2 = 0x3070dd17;
a.h3 = 0xf70e5939;
a.h4 = 0xffc00b31;
a.h5 = 0x68581511;
a.h6 = 0x64f98fa7;
a.h7 = 0xbefa4fa4;
return a;
}
void sha256_round(struct sha256_hash* hash){
const uint32_t k[64] = {0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,
0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3, 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,
0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc, 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,
0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13, 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,
0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3, 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,
0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208, 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2};
uint32_t W[64];
memset(W, 0, 64 * sizeof (uint32_t));
for (int i = 0; i < 16; i++)
W[i] = (hash->buffer[i * 4] << 24) | (hash->buffer[i * 4 + 1] << 16) | (hash->buffer[i * 4 + 2] << 8) | (hash->buffer[i * 4 + 3]);
for(int i = 16; i != 64; i++){
uint32_t s0 = rotr32(W[i - 15], 7) ^ rotr32(W[i - 15], 18) ^ (W[i - 15] >> 3);
uint32_t s1 = rotr32(W[i - 2], 17) ^ rotr32(W[i - 2], 19) ^ (W[i - 2] >> 10);
W[i] = W[i - 16] + s0 + W[i - 7] + s1;
}
uint32_t a = hash->h0;
uint32_t b = hash->h1;
uint32_t c = hash->h2;
uint32_t d = hash->h3;
uint32_t e = hash->h4;
uint32_t f = hash->h5;
uint32_t g = hash->h6;
uint32_t h = hash->h7;
for(int i = 0; i != 64; i++){
uint32_t S1 = rotr32(e, 6) ^ rotr32(e, 11) ^ rotr32(e, 25);
uint32_t ch = (e & f) ^ ((~e) & g);
uint32_t temp1 = h + S1 + ch + k[i] + W[i];
uint32_t S0 = rotr32(a, 2) ^ rotr32(a, 13) ^ rotr32(a, 22);
uint32_t maj = (a & b) ^ (a & c) ^ (b & c);
uint32_t temp2 = S0 + maj;
h = g;
g = f;
f = e;
e = d + temp1;
d = c;
c = b;
b = a;
a = temp1 + temp2;
}
hash->h0 += a;
hash->h1 += b;
hash->h2 += c;
hash->h3 += d;
hash->h4 += e;
hash->h5 += f;
hash->h6 += g;
hash->h7 += h;
}
#define sha224_update sha256_update
void sha256_update(uint8_t* input, size_t len, struct sha256_hash* hash){
hash->total += len;
size_t total_add = len + hash->bufflen;
size_t read = 0;
if(total_add < bs){
memcpy(hash->buffer + hash->bufflen, input, len);
hash->bufflen += len;
return;
}
for(; total_add >= bs;){
memcpy(hash->buffer + hash->bufflen, input + read, bs - hash->bufflen);
total_add -= bs;
hash->bufflen = 0;
read += bs;
sha256_round(hash);
}
memset(hash->buffer, 0, bs);
if(0 != total_add){
memcpy(hash->buffer, input + read, total_add);
hash->bufflen = total_add;
}
}
void _sha256_final(struct sha256_hash* hash){
hash->buffer[hash->bufflen] = 0x80;
if(hash->bufflen > bs - 8) {
//too large, needs another buffer
memset(hash->buffer + hash->bufflen + 1, 0, bs - hash->bufflen);
sha256_round(hash);
memset(hash->buffer, 0, bs);
}
size_t blen = 8*hash->total;
for(int i = 0; i != 8; i++)
hash->buffer[63 - i] = (uint8_t) (blen >> (i * 8) & 0xFF);
sha256_round(hash);
}
void sha256_final(struct sha256_hash* hash, char* out){
uint8_t old[bs];
struct sha256_hash old_hash;
memcpy(&old_hash, hash, sizeof * hash);
memcpy(old, hash->buffer, bs);
_sha256_final(hash);
sprintf(out, "%x%x%x%x%x%x%x%x",hash->h0,hash->h1,hash->h2,hash->h3,hash->h4,hash->h5,hash->h6,hash->h7);
memcpy(hash, &old_hash, sizeof * hash);
memcpy(hash->buffer, old, bs);
}
void sha224_final(struct sha256_hash* hash, char* out){
uint8_t old[bs];
struct sha256_hash old_hash;
memcpy(&old_hash, hash, sizeof * hash);
memcpy(old, hash->buffer, bs);
_sha256_final(hash);
sprintf(out, "%x%x%x%x%x%x%x",hash->h0,hash->h1,hash->h2,hash->h3,hash->h4,hash->h5,hash->h6);
memcpy(hash, &old_hash, sizeof * hash);
memcpy(hash->buffer, old, bs);
}
void sha256(uint8_t* in, size_t len, char* out){
struct sha256_hash a = sha256_init();
sha256_update(in, len, &a);
sha256_final(&a, out);
free(a.buffer);
}
void sha224(uint8_t* in, size_t len, char* out){
struct sha256_hash a = sha224_init();
sha224_update(in, len, &a);
sha224_final(&a, out);
free(a.buffer);
}
//common_hash_clone(sha256);
lua_common_hash_clone_oargs(sha256, sha256, l_sha256_init(L), {
uint8_t* old = b->buffer;
*b = *a;
b->buffer = old;
memcpy(b->buffer, a->buffer, bs * sizeof * b->buffer);
});
lua_common_hash_init_l(sha256, sha256);
lua_common_hash_update(sha256, sha256);
int l_sha256_final(lua_State* L){
struct sha256_hash* a = (struct sha256_hash*)lua_touserdata(L, 1);
char digest[256];
sha256_final(a, digest);
lua_pushstring(L, digest);
return 1;
}
int l_sha256(lua_State* L){
if(lua_gettop(L) == 0) return l_sha256_init(L);
size_t len = 0;
uint8_t* a = (uint8_t*)luaL_checklstring(L, 1, &len);
char digest[256];
sha256(a, len, digest);
lua_pushstring(L, digest);
return 1;
};
#define sha224_hash sha256_hash
//common_hash_clone(sha224);
lua_common_hash_clone_oargs(sha224, sha224, l_sha224_init(L), {
uint8_t* old = b->buffer;
*b = *a;
b->buffer = old;
memcpy(b->buffer, a->buffer, bs * sizeof * b->buffer);
});
lua_common_hash_init_l(sha224, sha224);
lua_common_hash_update(sha224, sha224);
int l_sha224_final(lua_State* L){
struct sha224_hash* a = (struct sha224_hash*)lua_touserdata(L, 1);
char digest[224];
sha224_final(a, digest);
lua_pushstring(L, digest);
return 1;
}
int l_sha224(lua_State* L){
if(lua_gettop(L) == 0) return l_sha224_init(L);
size_t len = 0;
uint8_t* a = (uint8_t*)luaL_checklstring(L, 1, &len);
char digest[224];
sha224(a, len, digest);
lua_pushstring(L, digest);
return 1;
};
|
