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
|
#include "../crypto.h"
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
static const uint32_t K[] = {0xd76aa478, 0xe8c7b756, 0x242070db, 0xc1bdceee, 0xf57c0faf,
0x4787c62a, 0xa8304613, 0xfd469501, 0x698098d8, 0x8b44f7af, 0xffff5bb1, 0x895cd7be,
0x6b901122, 0xfd987193, 0xa679438e, 0x49b40821, 0xf61e2562, 0xc040b340, 0x265e5a51,
0xe9b6c7aa, 0xd62f105d, 0x02441453, 0xd8a1e681, 0xe7d3fbc8, 0x21e1cde6, 0xc33707d6,
0xf4d50d87, 0x455a14ed, 0xa9e3e905, 0xfcefa3f8, 0x676f02d9, 0x8d2a4c8a, 0xfffa3942,
0x8771f681, 0x6d9d6122, 0xfde5380c, 0xa4beea44, 0x4bdecfa9, 0xf6bb4b60, 0xbebfbc70,
0x289b7ec6, 0xeaa127fa, 0xd4ef3085, 0x04881d05, 0xd9d4d039, 0xe6db99e5, 0x1fa27cf8,
0xc4ac5665, 0xf4292244, 0x432aff97, 0xab9423a7, 0xfc93a039, 0x655b59c3, 0x8f0ccc92,
0xffeff47d, 0x85845dd1, 0x6fa87e4f, 0xfe2ce6e0, 0xa3014314, 0x4e0811a1,
0xf7537e82, 0xbd3af235, 0x2ad7d2bb, 0xeb86d391};
static const uint32_t s[] = {7, 12, 17, 22, 7, 12, 17, 22, 7, 12, 17, 22, 7, 12, 17, 22,
5, 9, 14, 20, 5, 9, 14, 20, 5, 9, 14, 20, 5, 9, 14, 20,
4, 11, 16, 23, 4, 11, 16, 23, 4, 11, 16, 23, 4, 11, 16, 23,
6, 10, 15, 21, 6, 10, 15, 21, 6, 10, 15, 21, 6, 10, 15, 21};
#define bs 64
struct md5_hash md5_init(){
struct md5_hash a = {.a0 = 0x67452301, .b0 = 0xefcdab89, .c0 = 0x98badcfe, .d0 = 0x10325476, .total = 0, .bufflen = 0};
a.buffer = calloc(sizeof * a.buffer, bs);
return a;
}
struct md5_hash md5_init_l(lua_State* L){
struct md5_hash a = {.a0 = 0x67452301, .b0 = 0xefcdab89, .c0 = 0x98badcfe, .d0 = 0x10325476, .total = 0, .bufflen = 0};
a.buffer = lua_newuserdata(L, sizeof * a.buffer * bs);
memset(a.buffer, 0, bs);
return a;
}
void md5_round(struct md5_hash* hash){
uint32_t* M = (uint32_t *)(hash->buffer);
uint32_t A = hash->a0;
uint32_t B = hash->b0;
uint32_t C = hash->c0;
uint32_t D = hash->d0;
for(int i = 0; i < 64; i++){
uint32_t F, g;
if(i < 16){
F = (B & C) | ((~B) & D);
g = i;
} else if(i < 32){
F = (D & B) | ((~D) & C);
g = (5*i + 1) % 16;
} else if(i < 48){
F = B ^ C ^ D;
g = (3*i + 5) % 16;
} else {
F = C ^ (B | (~D));
g = (7*i) % 16;
}
F = F + A + K[i] + M[g];
uint32_t temp = D;
D = C;
C = B;
B = B + rotl32(F, s[i]);
A = temp;
}
hash->a0 += A;
hash->b0 += B;
hash->c0 += C;
hash->d0 += D;
}
void md5_update(uint8_t* input, size_t len, struct md5_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;
read += bs;
hash->bufflen = 0;
md5_round(hash);
}
memset(hash->buffer, 0, bs);
if(total_add != 0){
memcpy(hash->buffer, input + read, total_add);
hash->bufflen = total_add;
}
}
void md5_final(struct md5_hash* hash, char out_stream[64]){
uint8_t old[bs];
struct md5_hash old_hash;
memcpy(&old_hash, hash, sizeof * hash);
memcpy(old, hash->buffer, bs);
hash->buffer[hash->bufflen] = 0x80;
if(hash->bufflen > 55) {
//too large, needs another buffer
memset(hash->buffer + hash->bufflen + 1, 0, 64 - hash->bufflen);
md5_round(hash);
memset(hash->buffer, 0, 64);
}
uint32_t lhhh = 8*hash->total;
memcpy(hash->buffer + 56, &lhhh, 4);
md5_round(hash);
sprintf(out_stream,"%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x",
((uint8_t*)&hash->a0)[0], ((uint8_t*)&hash->a0)[1], ((uint8_t*)&hash->a0)[2], ((uint8_t*)&hash->a0)[3],
((uint8_t*)&hash->b0)[0], ((uint8_t*)&hash->b0)[1], ((uint8_t*)&hash->b0)[2], ((uint8_t*)&hash->b0)[3],
((uint8_t*)&hash->c0)[0], ((uint8_t*)&hash->c0)[1], ((uint8_t*)&hash->c0)[2], ((uint8_t*)&hash->c0)[3],
((uint8_t*)&hash->d0)[0], ((uint8_t*)&hash->d0)[1], ((uint8_t*)&hash->d0)[2], ((uint8_t*)&hash->d0)[3]);
memcpy(hash->buffer, old, bs);
memcpy(hash, &old_hash, sizeof * hash);
}
//common_hash_clone(md5);
lua_common_hash_clone_oargs(md5, md5, l_md5_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_ni(md5, md5, md5_init_l(L));
lua_common_hash_update(md5, md5);
//common_hash_init_update(md5);
int l_md5_final(lua_State* L){
struct md5_hash* a = (struct md5_hash*)lua_touserdata(L, 1);
char digest[128] = {0};
md5_final(a, digest);
lua_pushstring(L, digest);
return 1;
}
void md5(uint8_t* input, size_t len, char out_stream[64]){
struct md5_hash aa = md5_init();
md5_update(input, len, &aa);
md5_final(&aa, out_stream);
free(aa.buffer);
}
int l_md5(lua_State* L){
if(lua_gettop(L) == 0) return l_md5_init(L);
size_t len = 0;
uint8_t* a = (uint8_t*)luaL_checklstring(L, 1, &len);
char digest[128] = {0};
md5(a, len, digest);
lua_pushstring(L, digest);
return 1;
};
|
