| 9216 |
dunkaist |
1 |
; libcrash -- cryptographic hash (and other) functions |
| 7698 |
dunkaist |
2 |
; |
| 9216 |
dunkaist |
3 |
; Copyright (C) <2012-2013,2016,2019,2021> Ivan Baravy |
| 7698 |
dunkaist |
4 |
; |
| 9216 |
dunkaist |
5 |
; SPDX-License-Identifier: GPL-2.0-or-later |
| 7698 |
dunkaist |
6 |
; |
| 9216 |
dunkaist |
7 |
; This program is free software: you can redistribute it and/or modify it under |
|
|
8 |
; the terms of the GNU General Public License as published by the Free Software |
|
|
9 |
; Foundation, either version 2 of the License, or (at your option) any later |
|
|
10 |
; version. |
| 7698 |
dunkaist |
11 |
; |
| 9216 |
dunkaist |
12 |
; This program is distributed in the hope that it will be useful, but WITHOUT |
|
|
13 |
; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS |
|
|
14 |
; FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. |
|
|
15 |
; |
|
|
16 |
; You should have received a copy of the GNU General Public License along with |
|
|
17 |
; this program. If not, see . |
| 7698 |
dunkaist |
18 |
|
|
|
19 |
MD5_BLOCK_SIZE = 64 |
|
|
20 |
|
|
|
21 |
MD5_ALIGN = 4 |
|
|
22 |
MD5_ALIGN_MASK = MD5_ALIGN - 1 |
|
|
23 |
|
|
|
24 |
struct ctx_md5 |
| 9216 |
dunkaist |
25 |
hash rb MD5_LEN |
| 7698 |
dunkaist |
26 |
block rb MD5_BLOCK_SIZE |
|
|
27 |
index rd 1 |
|
|
28 |
msglen_0 rd 1 |
|
|
29 |
msglen_1 rd 1 |
|
|
30 |
ends |
|
|
31 |
|
| 9216 |
dunkaist |
32 |
assert sizeof.ctx_md5 <= LIBCRASH_CTX_LEN |
| 7698 |
dunkaist |
33 |
|
|
|
34 |
macro md5._.f b, c, d |
|
|
35 |
{ |
|
|
36 |
push c |
|
|
37 |
xor c, d |
|
|
38 |
and b, c |
|
|
39 |
xor b, d |
|
|
40 |
pop c |
|
|
41 |
} |
|
|
42 |
|
|
|
43 |
macro md5._.g b, c, d |
|
|
44 |
{ |
|
|
45 |
push c d |
|
|
46 |
and b, d |
|
|
47 |
not d |
|
|
48 |
and c, d |
|
|
49 |
or b, c |
|
|
50 |
pop d c |
|
|
51 |
} |
|
|
52 |
|
|
|
53 |
macro md5._.h b, c, d |
|
|
54 |
{ |
|
|
55 |
xor b, c |
|
|
56 |
xor b, d |
|
|
57 |
} |
|
|
58 |
|
|
|
59 |
macro md5._.i b, c, d |
|
|
60 |
{ |
|
|
61 |
push d |
|
|
62 |
not d |
|
|
63 |
or b, d |
|
|
64 |
xor b, c |
|
|
65 |
pop d |
|
|
66 |
} |
|
|
67 |
|
|
|
68 |
macro md5._.round func, a, b, c, d, index, shift, ac |
|
|
69 |
{ |
|
|
70 |
push b |
|
|
71 |
func b, c, d |
|
|
72 |
lea a, [a + b + ac] |
|
|
73 |
add a, [esi + index*4] |
|
|
74 |
rol a, shift |
|
|
75 |
pop b |
|
|
76 |
add a, b |
|
|
77 |
} |
|
|
78 |
|
|
|
79 |
|
| 9216 |
dunkaist |
80 |
proc md5.init uses ebx esi edi, _ctx |
| 7698 |
dunkaist |
81 |
mov ebx, [_ctx] |
|
|
82 |
lea edi, [ebx + ctx_md5.hash] |
|
|
83 |
mov esi, md5._.hash_init |
| 9216 |
dunkaist |
84 |
mov ecx, MD5_LEN/4 |
|
|
85 |
rep movsd |
| 7698 |
dunkaist |
86 |
xor eax, eax |
|
|
87 |
mov [ebx + ctx_md5.index], eax |
|
|
88 |
mov [ebx + ctx_md5.msglen_0], eax |
|
|
89 |
mov [ebx + ctx_md5.msglen_1], eax |
|
|
90 |
ret |
|
|
91 |
endp |
|
|
92 |
|
|
|
93 |
|
|
|
94 |
proc md5._.block _hash |
|
|
95 |
|
|
|
96 |
mov edi, [_hash] |
|
|
97 |
mov eax, [edi + 0x0] |
|
|
98 |
mov ebx, [edi + 0x4] |
|
|
99 |
mov ecx, [edi + 0x8] |
|
|
100 |
mov edx, [edi + 0xc] |
|
|
101 |
|
|
|
102 |
md5._.round md5._.f, eax, ebx, ecx, edx, 0, 7, 0xd76aa478 |
|
|
103 |
md5._.round md5._.f, edx, eax, ebx, ecx, 1, 12, 0xe8c7b756 |
|
|
104 |
md5._.round md5._.f, ecx, edx, eax, ebx, 2, 17, 0x242070db |
|
|
105 |
md5._.round md5._.f, ebx, ecx, edx, eax, 3, 22, 0xc1bdceee |
|
|
106 |
md5._.round md5._.f, eax, ebx, ecx, edx, 4, 7, 0xf57c0faf |
|
|
107 |
md5._.round md5._.f, edx, eax, ebx, ecx, 5, 12, 0x4787c62a |
|
|
108 |
md5._.round md5._.f, ecx, edx, eax, ebx, 6, 17, 0xa8304613 |
|
|
109 |
md5._.round md5._.f, ebx, ecx, edx, eax, 7, 22, 0xfd469501 |
|
|
110 |
md5._.round md5._.f, eax, ebx, ecx, edx, 8, 7, 0x698098d8 |
|
|
111 |
md5._.round md5._.f, edx, eax, ebx, ecx, 9, 12, 0x8b44f7af |
|
|
112 |
md5._.round md5._.f, ecx, edx, eax, ebx, 10, 17, 0xffff5bb1 |
|
|
113 |
md5._.round md5._.f, ebx, ecx, edx, eax, 11, 22, 0x895cd7be |
|
|
114 |
md5._.round md5._.f, eax, ebx, ecx, edx, 12, 7, 0x6b901122 |
|
|
115 |
md5._.round md5._.f, edx, eax, ebx, ecx, 13, 12, 0xfd987193 |
|
|
116 |
md5._.round md5._.f, ecx, edx, eax, ebx, 14, 17, 0xa679438e |
|
|
117 |
md5._.round md5._.f, ebx, ecx, edx, eax, 15, 22, 0x49b40821 |
|
|
118 |
|
|
|
119 |
md5._.round md5._.g, eax, ebx, ecx, edx, 1, 5, 0xf61e2562 |
|
|
120 |
md5._.round md5._.g, edx, eax, ebx, ecx, 6, 9, 0xc040b340 |
|
|
121 |
md5._.round md5._.g, ecx, edx, eax, ebx, 11, 14, 0x265e5a51 |
|
|
122 |
md5._.round md5._.g, ebx, ecx, edx, eax, 0, 20, 0xe9b6c7aa |
|
|
123 |
md5._.round md5._.g, eax, ebx, ecx, edx, 5, 5, 0xd62f105d |
|
|
124 |
md5._.round md5._.g, edx, eax, ebx, ecx, 10, 9, 0x02441453 |
|
|
125 |
md5._.round md5._.g, ecx, edx, eax, ebx, 15, 14, 0xd8a1e681 |
|
|
126 |
md5._.round md5._.g, ebx, ecx, edx, eax, 4, 20, 0xe7d3fbc8 |
|
|
127 |
md5._.round md5._.g, eax, ebx, ecx, edx, 9, 5, 0x21e1cde6 |
|
|
128 |
md5._.round md5._.g, edx, eax, ebx, ecx, 14, 9, 0xc33707d6 |
|
|
129 |
md5._.round md5._.g, ecx, edx, eax, ebx, 3, 14, 0xf4d50d87 |
|
|
130 |
md5._.round md5._.g, ebx, ecx, edx, eax, 8, 20, 0x455a14ed |
|
|
131 |
md5._.round md5._.g, eax, ebx, ecx, edx, 13, 5, 0xa9e3e905 |
|
|
132 |
md5._.round md5._.g, edx, eax, ebx, ecx, 2, 9, 0xfcefa3f8 |
|
|
133 |
md5._.round md5._.g, ecx, edx, eax, ebx, 7, 14, 0x676f02d9 |
|
|
134 |
md5._.round md5._.g, ebx, ecx, edx, eax, 12, 20, 0x8d2a4c8a |
|
|
135 |
|
|
|
136 |
md5._.round md5._.h, eax, ebx, ecx, edx, 5, 4, 0xfffa3942 |
|
|
137 |
md5._.round md5._.h, edx, eax, ebx, ecx, 8, 11, 0x8771f681 |
|
|
138 |
md5._.round md5._.h, ecx, edx, eax, ebx, 11, 16, 0x6d9d6122 |
|
|
139 |
md5._.round md5._.h, ebx, ecx, edx, eax, 14, 23, 0xfde5380c |
|
|
140 |
md5._.round md5._.h, eax, ebx, ecx, edx, 1, 4, 0xa4beea44 |
|
|
141 |
md5._.round md5._.h, edx, eax, ebx, ecx, 4, 11, 0x4bdecfa9 |
|
|
142 |
md5._.round md5._.h, ecx, edx, eax, ebx, 7, 16, 0xf6bb4b60 |
|
|
143 |
md5._.round md5._.h, ebx, ecx, edx, eax, 10, 23, 0xbebfbc70 |
|
|
144 |
md5._.round md5._.h, eax, ebx, ecx, edx, 13, 4, 0x289b7ec6 |
|
|
145 |
md5._.round md5._.h, edx, eax, ebx, ecx, 0, 11, 0xeaa127fa |
|
|
146 |
md5._.round md5._.h, ecx, edx, eax, ebx, 3, 16, 0xd4ef3085 |
|
|
147 |
md5._.round md5._.h, ebx, ecx, edx, eax, 6, 23, 0x04881d05 |
|
|
148 |
md5._.round md5._.h, eax, ebx, ecx, edx, 9, 4, 0xd9d4d039 |
|
|
149 |
md5._.round md5._.h, edx, eax, ebx, ecx, 12, 11, 0xe6db99e5 |
|
|
150 |
md5._.round md5._.h, ecx, edx, eax, ebx, 15, 16, 0x1fa27cf8 |
|
|
151 |
md5._.round md5._.h, ebx, ecx, edx, eax, 2, 23, 0xc4ac5665 |
|
|
152 |
|
|
|
153 |
md5._.round md5._.i, eax, ebx, ecx, edx, 0, 6, 0xf4292244 |
|
|
154 |
md5._.round md5._.i, edx, eax, ebx, ecx, 7, 10, 0x432aff97 |
|
|
155 |
md5._.round md5._.i, ecx, edx, eax, ebx, 14, 15, 0xab9423a7 |
|
|
156 |
md5._.round md5._.i, ebx, ecx, edx, eax, 5, 21, 0xfc93a039 |
|
|
157 |
md5._.round md5._.i, eax, ebx, ecx, edx, 12, 6, 0x655b59c3 |
|
|
158 |
md5._.round md5._.i, edx, eax, ebx, ecx, 3, 10, 0x8f0ccc92 |
|
|
159 |
md5._.round md5._.i, ecx, edx, eax, ebx, 10, 15, 0xffeff47d |
|
|
160 |
md5._.round md5._.i, ebx, ecx, edx, eax, 1, 21, 0x85845dd1 |
|
|
161 |
md5._.round md5._.i, eax, ebx, ecx, edx, 8, 6, 0x6fa87e4f |
|
|
162 |
md5._.round md5._.i, edx, eax, ebx, ecx, 15, 10, 0xfe2ce6e0 |
|
|
163 |
md5._.round md5._.i, ecx, edx, eax, ebx, 6, 15, 0xa3014314 |
|
|
164 |
md5._.round md5._.i, ebx, ecx, edx, eax, 13, 21, 0x4e0811a1 |
|
|
165 |
md5._.round md5._.i, eax, ebx, ecx, edx, 4, 6, 0xf7537e82 |
|
|
166 |
md5._.round md5._.i, edx, eax, ebx, ecx, 11, 10, 0xbd3af235 |
|
|
167 |
md5._.round md5._.i, ecx, edx, eax, ebx, 2, 15, 0x2ad7d2bb |
|
|
168 |
md5._.round md5._.i, ebx, ecx, edx, eax, 9, 21, 0xeb86d391 |
|
|
169 |
|
|
|
170 |
mov edi, [_hash] |
|
|
171 |
add [edi + 0x0], eax |
|
|
172 |
add [edi + 0x4], ebx |
|
|
173 |
add [edi + 0x8], ecx |
|
|
174 |
add [edi + 0xc], edx |
|
|
175 |
|
|
|
176 |
ret |
|
|
177 |
endp |
|
|
178 |
|
|
|
179 |
|
| 9216 |
dunkaist |
180 |
proc md5.update uses ebx esi edi, _ctx, _msg, _size |
| 7698 |
dunkaist |
181 |
mov ebx, [_ctx] |
|
|
182 |
mov ecx, [_size] |
|
|
183 |
add [ebx + ctx_md5.msglen_0], ecx |
|
|
184 |
adc [ebx + ctx_md5.msglen_1], 0 |
|
|
185 |
|
| 9216 |
dunkaist |
186 |
.next_block: |
| 7698 |
dunkaist |
187 |
mov ebx, [_ctx] |
|
|
188 |
mov esi, [_msg] |
|
|
189 |
mov eax, [ebx + ctx_md5.index] |
|
|
190 |
and eax, MD5_BLOCK_SIZE-1 |
|
|
191 |
jnz .copy_to_buf |
|
|
192 |
test esi, MD5_ALIGN_MASK |
|
|
193 |
jnz .copy_to_buf |
| 9216 |
dunkaist |
194 |
.no_copy: |
| 7698 |
dunkaist |
195 |
; data is aligned, hash it in place without copying |
|
|
196 |
mov ebx, [_ctx] |
|
|
197 |
cmp [_size], MD5_BLOCK_SIZE |
|
|
198 |
jb .copy_quit |
|
|
199 |
lea eax, [ebx + ctx_md5.hash] |
|
|
200 |
stdcall md5._.block, eax |
|
|
201 |
sub [_size], MD5_BLOCK_SIZE |
|
|
202 |
add esi, MD5_BLOCK_SIZE |
|
|
203 |
jmp .no_copy |
|
|
204 |
|
| 9216 |
dunkaist |
205 |
.copy_to_buf: |
| 7698 |
dunkaist |
206 |
lea edi, [ebx + ctx_md5.block] |
|
|
207 |
add edi, eax |
|
|
208 |
mov ecx, MD5_BLOCK_SIZE |
|
|
209 |
sub ecx, eax |
|
|
210 |
cmp [_size], ecx |
|
|
211 |
jb .copy_quit |
|
|
212 |
sub [_size], ecx |
|
|
213 |
add [_msg], ecx |
|
|
214 |
add [ebx + ctx_md5.index], ecx |
| 9216 |
dunkaist |
215 |
rep movsb |
| 7698 |
dunkaist |
216 |
lea eax, [ebx + ctx_md5.hash] |
|
|
217 |
lea esi, [ebx + ctx_md5.block] |
|
|
218 |
stdcall md5._.block, eax |
|
|
219 |
jmp .next_block |
|
|
220 |
|
| 9216 |
dunkaist |
221 |
.copy_quit: |
| 7698 |
dunkaist |
222 |
mov ebx, [_ctx] |
|
|
223 |
lea edi, [ebx + ctx_md5.block] |
|
|
224 |
mov eax, [ebx + ctx_md5.index] |
|
|
225 |
and eax, MD5_BLOCK_SIZE-1 |
|
|
226 |
add edi, eax |
|
|
227 |
mov ecx, [_size] |
|
|
228 |
add [ebx + ctx_md5.index], ecx |
| 9216 |
dunkaist |
229 |
rep movsb |
|
|
230 |
.quit: |
| 7698 |
dunkaist |
231 |
|
|
|
232 |
ret |
|
|
233 |
endp |
|
|
234 |
|
|
|
235 |
|
| 9216 |
dunkaist |
236 |
proc md5.finish uses ebx esi edi, _ctx |
| 7698 |
dunkaist |
237 |
mov ebx, [_ctx] |
|
|
238 |
lea edi, [ebx + ctx_md5.block] |
|
|
239 |
mov ecx, [ebx + ctx_md5.msglen_0] |
|
|
240 |
and ecx, MD5_BLOCK_SIZE-1 |
|
|
241 |
add edi, ecx |
|
|
242 |
mov byte[edi], 0x80 |
|
|
243 |
inc edi |
|
|
244 |
neg ecx |
|
|
245 |
add ecx, MD5_BLOCK_SIZE |
|
|
246 |
cmp ecx, 8 |
|
|
247 |
ja .last |
|
|
248 |
|
|
|
249 |
dec ecx |
|
|
250 |
xor eax, eax |
| 9216 |
dunkaist |
251 |
rep stosb |
| 7698 |
dunkaist |
252 |
lea esi, [ebx + ctx_md5.block] |
|
|
253 |
lea eax, [ebx + ctx_md5.hash] |
|
|
254 |
stdcall md5._.block, eax |
|
|
255 |
mov ebx, [_ctx] |
|
|
256 |
lea edi, [ebx + ctx_md5.block] |
|
|
257 |
mov ecx, MD5_BLOCK_SIZE+1 |
| 9216 |
dunkaist |
258 |
.last: |
| 7698 |
dunkaist |
259 |
dec ecx |
|
|
260 |
sub ecx, 8 |
|
|
261 |
xor eax, eax |
| 9216 |
dunkaist |
262 |
rep stosb |
| 7698 |
dunkaist |
263 |
mov eax, [ebx + ctx_md5.msglen_0] |
|
|
264 |
mov edx, [ebx + ctx_md5.msglen_1] |
|
|
265 |
shld edx, eax, 3 |
|
|
266 |
shl eax, 3 |
|
|
267 |
mov dword[edi], eax |
|
|
268 |
mov dword[edi+4], edx |
|
|
269 |
lea esi, [ebx + ctx_md5.block] |
|
|
270 |
lea eax, [ebx + ctx_md5.hash] |
|
|
271 |
stdcall md5._.block, eax |
|
|
272 |
|
|
|
273 |
ret |
|
|
274 |
endp |
|
|
275 |
|
|
|
276 |
|
|
|
277 |
proc md5.oneshot _ctx, _data, _len |
| 9216 |
dunkaist |
278 |
stdcall md5.init, [_ctx] |
|
|
279 |
stdcall md5.update, [_ctx], [_data], [_len] |
|
|
280 |
stdcall md5.finish, [_ctx] |
|
|
281 |
ret |
| 7698 |
dunkaist |
282 |
endp |
|
|
283 |
|
|
|
284 |
|
|
|
285 |
iglobal |
|
|
286 |
align MD5_ALIGN |
|
|
287 |
md5._.hash_init dd 0x67452301, 0xefcdab89, 0x98badcfe, 0x10325476, 0xc3d2e1f0 |
|
|
288 |
endg |