diff options
Diffstat (limited to 'rbutil/mkzenboot/utils.c')
-rw-r--r-- | rbutil/mkzenboot/utils.c | 896 |
1 files changed, 896 insertions, 0 deletions
diff --git a/rbutil/mkzenboot/utils.c b/rbutil/mkzenboot/utils.c new file mode 100644 index 0000000000..b8ef3be237 --- /dev/null +++ b/rbutil/mkzenboot/utils.c | |||
@@ -0,0 +1,896 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * $Id$ | ||
9 | * | ||
10 | * Copyright (C) 2008 by Maurus Cuelenaere | ||
11 | * Based on zenutils by Rasmus Ry <rasmus.ry{at}gmail.com> | ||
12 | * Copyright (C) 2013 by Amaury Pouly | ||
13 | * | ||
14 | * This program is free software; you can redistribute it and/or | ||
15 | * modify it under the terms of the GNU General Public License | ||
16 | * as published by the Free Software Foundation; either version 2 | ||
17 | * of the License, or (at your option) any later version. | ||
18 | * | ||
19 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | ||
20 | * KIND, either express or implied. | ||
21 | * | ||
22 | ****************************************************************************/ | ||
23 | #include "utils.h" | ||
24 | #include "md5.h" | ||
25 | #include <zlib.h> | ||
26 | //#include "hmac-sha1.h" | ||
27 | |||
28 | int filesize(FILE* fd) | ||
29 | { | ||
30 | int tmp, tmp2 = ftell(fd); | ||
31 | fseek(fd, 0, SEEK_END); | ||
32 | tmp = ftell(fd); | ||
33 | fseek(fd, tmp2, SEEK_SET); | ||
34 | return tmp; | ||
35 | } | ||
36 | |||
37 | unsigned int le2int(unsigned char* buf) | ||
38 | { | ||
39 | return ((buf[3] << 24) | (buf[2] << 16) | (buf[1] << 8) | buf[0]); | ||
40 | } | ||
41 | |||
42 | unsigned int be2int(unsigned char* buf) | ||
43 | { | ||
44 | return ((buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3]); | ||
45 | } | ||
46 | |||
47 | void int2le(unsigned int val, unsigned char* addr) | ||
48 | { | ||
49 | addr[0] = val & 0xFF; | ||
50 | addr[1] = (val >> 8) & 0xff; | ||
51 | addr[2] = (val >> 16) & 0xff; | ||
52 | addr[3] = (val >> 24) & 0xff; | ||
53 | } | ||
54 | |||
55 | const char* find_firmware_key(const unsigned char* buffer, size_t len) | ||
56 | { | ||
57 | char szkey1[] = "34d1"; | ||
58 | size_t cchkey1 = strlen(szkey1); | ||
59 | char szkey2[] = "TbnCboEbn"; | ||
60 | size_t cchkey2 = strlen(szkey2); | ||
61 | uint32_t i; | ||
62 | for (i = 0; i < (uint32_t)len; i++) | ||
63 | { | ||
64 | if (len >= cchkey1) | ||
65 | { | ||
66 | if (!strncmp((char*)&buffer[i], szkey1, cchkey1)) | ||
67 | return (const char*)&buffer[i]; | ||
68 | } | ||
69 | if (len >= cchkey2) | ||
70 | { | ||
71 | if (!strncmp((char*)&buffer[i], szkey2, cchkey2)) | ||
72 | return (const char*)&buffer[i]; | ||
73 | } | ||
74 | } | ||
75 | return NULL; | ||
76 | } | ||
77 | |||
78 | uint32_t find_firmware_offset(unsigned char* buffer, size_t len) | ||
79 | { | ||
80 | uint32_t i; | ||
81 | for (i = 0; i < (uint32_t)len; i += 0x10) | ||
82 | { | ||
83 | if (buffer[i + sizeof(uint32_t)] != 0 | ||
84 | && buffer[i + sizeof(uint32_t) + 1] != 0 | ||
85 | && buffer[i + sizeof(uint32_t) + 2] != 0 | ||
86 | && buffer[i + sizeof(uint32_t) + 3] != 0) | ||
87 | { | ||
88 | return i; | ||
89 | } | ||
90 | if(i > 0xFF) /* Arbitrary guess */ | ||
91 | return 0; | ||
92 | } | ||
93 | return 0; | ||
94 | } | ||
95 | |||
96 | bool crypt_firmware(const char* key, unsigned char* buffer, size_t len) | ||
97 | { | ||
98 | char key_cpy[255]; | ||
99 | unsigned int i; | ||
100 | unsigned int tmp = 0; | ||
101 | int key_length = strlen(key); | ||
102 | |||
103 | strcpy(key_cpy, key); | ||
104 | for(i=0; i < strlen(key); i++) | ||
105 | key_cpy[i] = key[i] - 1; | ||
106 | |||
107 | for(i=0; i < len; i++) | ||
108 | { | ||
109 | buffer[i] ^= key_cpy[tmp] | 0x80; | ||
110 | tmp = (tmp + 1) % key_length; | ||
111 | } | ||
112 | |||
113 | return true; | ||
114 | } | ||
115 | |||
116 | bool inflate_to_buffer(const unsigned char *buffer, size_t len, unsigned char* out_buffer, size_t out_len, char** err_msg) | ||
117 | { | ||
118 | /* Initialize Zlib */ | ||
119 | z_stream d_stream; | ||
120 | int ret; | ||
121 | |||
122 | d_stream.zalloc = Z_NULL; | ||
123 | d_stream.zfree = Z_NULL; | ||
124 | d_stream.opaque = Z_NULL; | ||
125 | |||
126 | d_stream.next_in = (unsigned char*)buffer; | ||
127 | d_stream.avail_in = len; | ||
128 | |||
129 | ret = inflateInit(&d_stream); | ||
130 | if (ret != Z_OK) | ||
131 | { | ||
132 | *err_msg = d_stream.msg; | ||
133 | return false; | ||
134 | } | ||
135 | |||
136 | d_stream.next_out = out_buffer; | ||
137 | d_stream.avail_out = out_len; | ||
138 | |||
139 | ret = inflate(&d_stream, Z_SYNC_FLUSH); | ||
140 | if(ret < 0) | ||
141 | { | ||
142 | *err_msg = d_stream.msg; | ||
143 | return false; | ||
144 | } | ||
145 | else | ||
146 | inflateEnd(&d_stream); | ||
147 | |||
148 | return true; | ||
149 | } | ||
150 | |||
151 | #define CODE_MASK 0xC0 | ||
152 | #define ARGS_MASK 0x3F | ||
153 | |||
154 | #define REPEAT_CODE 0x00 | ||
155 | #define BLOCK_CODE 0x40 | ||
156 | #define LONG_RUN_CODE 0x80 | ||
157 | #define SHORT_RUN_CODE 0xC0 | ||
158 | |||
159 | #define BLOCK_ARGS 0x1F | ||
160 | #define BLOCK_MODE 0x20 | ||
161 | |||
162 | |||
163 | static void decode_run(unsigned char* dst, uint16_t len, unsigned char val, | ||
164 | int* dstidx) | ||
165 | { | ||
166 | memset(dst + *dstidx, val, len); | ||
167 | *dstidx += len; | ||
168 | } | ||
169 | |||
170 | static void decode_pattern(unsigned char* src, unsigned char* dst, | ||
171 | uint16_t len, int* srcidx, int* dstidx, | ||
172 | bool bdecode, int npasses) | ||
173 | { | ||
174 | int i, j; | ||
175 | for (i = 0; i < npasses; i++) | ||
176 | { | ||
177 | if (bdecode) | ||
178 | { | ||
179 | for (j = 0; j < len; j++) | ||
180 | { | ||
181 | uint16_t c, d; | ||
182 | c = src[*srcidx + j]; | ||
183 | d = (c >> 5) & 7; | ||
184 | c = (c << 3) & 0xF8; | ||
185 | src[*srcidx + j] = (unsigned char)(c | d); | ||
186 | } | ||
187 | bdecode = false; | ||
188 | } | ||
189 | memcpy(dst + *dstidx, src + *srcidx, len); | ||
190 | *dstidx += len; | ||
191 | } | ||
192 | *srcidx += len; | ||
193 | } | ||
194 | |||
195 | int cenc_decode(unsigned char* src, int srclen, unsigned char* dst, int dstlen) | ||
196 | { | ||
197 | int i = 0, j = 0; | ||
198 | do | ||
199 | { | ||
200 | uint16_t c, d, e; | ||
201 | c = src[i++]; | ||
202 | switch (c & CODE_MASK) | ||
203 | { | ||
204 | case REPEAT_CODE: /* 2 unsigned chars */ | ||
205 | d = src[i++]; | ||
206 | d = d + 2; | ||
207 | |||
208 | e = (c & ARGS_MASK) + 2; | ||
209 | |||
210 | decode_pattern(src, dst, e, &i, &j, false, d); | ||
211 | break; | ||
212 | |||
213 | case BLOCK_CODE: /* 1/2/3 unsigned chars */ | ||
214 | d = c & BLOCK_ARGS; | ||
215 | if (!(c & BLOCK_MODE)) | ||
216 | { | ||
217 | e = src[i++]; | ||
218 | e = (d << 8) + (e + 0x21); | ||
219 | |||
220 | d = (uint16_t)(i ^ j); | ||
221 | } | ||
222 | else | ||
223 | { | ||
224 | e = d + 1; | ||
225 | |||
226 | d = (uint16_t)(i ^ j); | ||
227 | } | ||
228 | if (d & 1) | ||
229 | { | ||
230 | i++; | ||
231 | } | ||
232 | |||
233 | decode_pattern(src, dst, e, &i, &j, true, 1); | ||
234 | break; | ||
235 | |||
236 | case LONG_RUN_CODE: /* 3 unsigned chars */ | ||
237 | d = src[i++]; | ||
238 | e = ((c & ARGS_MASK) << 8) + (d + 0x42); | ||
239 | |||
240 | d = src[i++]; | ||
241 | d = ((d & 7) << 5) | ((d >> 3) & 0x1F); | ||
242 | |||
243 | decode_run(dst, e, (unsigned char)(d), &j); | ||
244 | break; | ||
245 | |||
246 | case SHORT_RUN_CODE: /* 2 unsigned chars */ | ||
247 | d = src[i++]; | ||
248 | d = ((d & 3) << 6) | ((d >> 2) & 0x3F); | ||
249 | |||
250 | e = (c & ARGS_MASK) + 2; | ||
251 | |||
252 | decode_run(dst, e, (unsigned char)(d), &j); | ||
253 | break; | ||
254 | }; | ||
255 | } while (i < srclen && j < dstlen); | ||
256 | |||
257 | return j; | ||
258 | } | ||
259 | |||
260 | /* | ||
261 | * Copyright (c) 1999, 2000, 2002 Virtual Unlimited B.V. | ||
262 | * | ||
263 | * This library is free software; you can redistribute it and/or | ||
264 | * modify it under the terms of the GNU Lesser General Public | ||
265 | * License as published by the Free Software Foundation; either | ||
266 | * version 2.1 of the License, or (at your option) any later version. | ||
267 | * | ||
268 | * This library is distributed in the hope that it will be useful, | ||
269 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
270 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
271 | * Lesser General Public License for more details. | ||
272 | * | ||
273 | * You should have received a copy of the GNU Lesser General Public | ||
274 | * License along with this library; if not, write to the Free Software | ||
275 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | ||
276 | * | ||
277 | */ | ||
278 | |||
279 | #define BLOWFISHROUNDS 16 | ||
280 | #define BLOWFISHPSIZE (BLOWFISHROUNDS+2) | ||
281 | #define WORDS_BIGENDIAN 0 | ||
282 | |||
283 | struct blowfishParam | ||
284 | { | ||
285 | uint32_t p[BLOWFISHPSIZE]; | ||
286 | uint32_t s[1024]; | ||
287 | uint32_t fdback[2]; | ||
288 | }; | ||
289 | |||
290 | typedef enum | ||
291 | { | ||
292 | NOCRYPT, | ||
293 | ENCRYPT, | ||
294 | DECRYPT | ||
295 | } cipherOperation; | ||
296 | |||
297 | static inline uint32_t swapu32(uint32_t n) | ||
298 | { | ||
299 | return ( ((n & 0xffU) << 24) | | ||
300 | ((n & 0xff00U) << 8) | | ||
301 | ((n & 0xff0000U) >> 8) | | ||
302 | ((n & 0xff000000U) >> 24) ); | ||
303 | } | ||
304 | |||
305 | static uint32_t _bf_p[BLOWFISHPSIZE] = { | ||
306 | 0x243f6a88, 0x85a308d3, 0x13198a2e, 0x03707344, | ||
307 | 0xa4093822, 0x299f31d0, 0x082efa98, 0xec4e6c89, | ||
308 | 0x452821e6, 0x38d01377, 0xbe5466cf, 0x34e90c6c, | ||
309 | 0xc0ac29b7, 0xc97c50dd, 0x3f84d5b5, 0xb5470917, | ||
310 | 0x9216d5d9, 0x8979fb1b | ||
311 | }; | ||
312 | |||
313 | static uint32_t _bf_s[1024] = { | ||
314 | 0xd1310ba6, 0x98dfb5ac, 0x2ffd72db, 0xd01adfb7, | ||
315 | 0xb8e1afed, 0x6a267e96, 0xba7c9045, 0xf12c7f99, | ||
316 | 0x24a19947, 0xb3916cf7, 0x0801f2e2, 0x858efc16, | ||
317 | 0x636920d8, 0x71574e69, 0xa458fea3, 0xf4933d7e, | ||
318 | 0x0d95748f, 0x728eb658, 0x718bcd58, 0x82154aee, | ||
319 | 0x7b54a41d, 0xc25a59b5, 0x9c30d539, 0x2af26013, | ||
320 | 0xc5d1b023, 0x286085f0, 0xca417918, 0xb8db38ef, | ||
321 | 0x8e79dcb0, 0x603a180e, 0x6c9e0e8b, 0xb01e8a3e, | ||
322 | 0xd71577c1, 0xbd314b27, 0x78af2fda, 0x55605c60, | ||
323 | 0xe65525f3, 0xaa55ab94, 0x57489862, 0x63e81440, | ||
324 | 0x55ca396a, 0x2aab10b6, 0xb4cc5c34, 0x1141e8ce, | ||
325 | 0xa15486af, 0x7c72e993, 0xb3ee1411, 0x636fbc2a, | ||
326 | 0x2ba9c55d, 0x741831f6, 0xce5c3e16, 0x9b87931e, | ||
327 | 0xafd6ba33, 0x6c24cf5c, 0x7a325381, 0x28958677, | ||
328 | 0x3b8f4898, 0x6b4bb9af, 0xc4bfe81b, 0x66282193, | ||
329 | 0x61d809cc, 0xfb21a991, 0x487cac60, 0x5dec8032, | ||
330 | 0xef845d5d, 0xe98575b1, 0xdc262302, 0xeb651b88, | ||
331 | 0x23893e81, 0xd396acc5, 0x0f6d6ff3, 0x83f44239, | ||
332 | 0x2e0b4482, 0xa4842004, 0x69c8f04a, 0x9e1f9b5e, | ||
333 | 0x21c66842, 0xf6e96c9a, 0x670c9c61, 0xabd388f0, | ||
334 | 0x6a51a0d2, 0xd8542f68, 0x960fa728, 0xab5133a3, | ||
335 | 0x6eef0b6c, 0x137a3be4, 0xba3bf050, 0x7efb2a98, | ||
336 | 0xa1f1651d, 0x39af0176, 0x66ca593e, 0x82430e88, | ||
337 | 0x8cee8619, 0x456f9fb4, 0x7d84a5c3, 0x3b8b5ebe, | ||
338 | 0xe06f75d8, 0x85c12073, 0x401a449f, 0x56c16aa6, | ||
339 | 0x4ed3aa62, 0x363f7706, 0x1bfedf72, 0x429b023d, | ||
340 | 0x37d0d724, 0xd00a1248, 0xdb0fead3, 0x49f1c09b, | ||
341 | 0x075372c9, 0x80991b7b, 0x25d479d8, 0xf6e8def7, | ||
342 | 0xe3fe501a, 0xb6794c3b, 0x976ce0bd, 0x04c006ba, | ||
343 | 0xc1a94fb6, 0x409f60c4, 0x5e5c9ec2, 0x196a2463, | ||
344 | 0x68fb6faf, 0x3e6c53b5, 0x1339b2eb, 0x3b52ec6f, | ||
345 | 0x6dfc511f, 0x9b30952c, 0xcc814544, 0xaf5ebd09, | ||
346 | 0xbee3d004, 0xde334afd, 0x660f2807, 0x192e4bb3, | ||
347 | 0xc0cba857, 0x45c8740f, 0xd20b5f39, 0xb9d3fbdb, | ||
348 | 0x5579c0bd, 0x1a60320a, 0xd6a100c6, 0x402c7279, | ||
349 | 0x679f25fe, 0xfb1fa3cc, 0x8ea5e9f8, 0xdb3222f8, | ||
350 | 0x3c7516df, 0xfd616b15, 0x2f501ec8, 0xad0552ab, | ||
351 | 0x323db5fa, 0xfd238760, 0x53317b48, 0x3e00df82, | ||
352 | 0x9e5c57bb, 0xca6f8ca0, 0x1a87562e, 0xdf1769db, | ||
353 | 0xd542a8f6, 0x287effc3, 0xac6732c6, 0x8c4f5573, | ||
354 | 0x695b27b0, 0xbbca58c8, 0xe1ffa35d, 0xb8f011a0, | ||
355 | 0x10fa3d98, 0xfd2183b8, 0x4afcb56c, 0x2dd1d35b, | ||
356 | 0x9a53e479, 0xb6f84565, 0xd28e49bc, 0x4bfb9790, | ||
357 | 0xe1ddf2da, 0xa4cb7e33, 0x62fb1341, 0xcee4c6e8, | ||
358 | 0xef20cada, 0x36774c01, 0xd07e9efe, 0x2bf11fb4, | ||
359 | 0x95dbda4d, 0xae909198, 0xeaad8e71, 0x6b93d5a0, | ||
360 | 0xd08ed1d0, 0xafc725e0, 0x8e3c5b2f, 0x8e7594b7, | ||
361 | 0x8ff6e2fb, 0xf2122b64, 0x8888b812, 0x900df01c, | ||
362 | 0x4fad5ea0, 0x688fc31c, 0xd1cff191, 0xb3a8c1ad, | ||
363 | 0x2f2f2218, 0xbe0e1777, 0xea752dfe, 0x8b021fa1, | ||
364 | 0xe5a0cc0f, 0xb56f74e8, 0x18acf3d6, 0xce89e299, | ||
365 | 0xb4a84fe0, 0xfd13e0b7, 0x7cc43b81, 0xd2ada8d9, | ||
366 | 0x165fa266, 0x80957705, 0x93cc7314, 0x211a1477, | ||
367 | 0xe6ad2065, 0x77b5fa86, 0xc75442f5, 0xfb9d35cf, | ||
368 | 0xebcdaf0c, 0x7b3e89a0, 0xd6411bd3, 0xae1e7e49, | ||
369 | 0x00250e2d, 0x2071b35e, 0x226800bb, 0x57b8e0af, | ||
370 | 0x2464369b, 0xf009b91e, 0x5563911d, 0x59dfa6aa, | ||
371 | 0x78c14389, 0xd95a537f, 0x207d5ba2, 0x02e5b9c5, | ||
372 | 0x83260376, 0x6295cfa9, 0x11c81968, 0x4e734a41, | ||
373 | 0xb3472dca, 0x7b14a94a, 0x1b510052, 0x9a532915, | ||
374 | 0xd60f573f, 0xbc9bc6e4, 0x2b60a476, 0x81e67400, | ||
375 | 0x08ba6fb5, 0x571be91f, 0xf296ec6b, 0x2a0dd915, | ||
376 | 0xb6636521, 0xe7b9f9b6, 0xff34052e, 0xc5855664, | ||
377 | 0x53b02d5d, 0xa99f8fa1, 0x08ba4799, 0x6e85076a, | ||
378 | 0x4b7a70e9, 0xb5b32944, 0xdb75092e, 0xc4192623, | ||
379 | 0xad6ea6b0, 0x49a7df7d, 0x9cee60b8, 0x8fedb266, | ||
380 | 0xecaa8c71, 0x699a17ff, 0x5664526c, 0xc2b19ee1, | ||
381 | 0x193602a5, 0x75094c29, 0xa0591340, 0xe4183a3e, | ||
382 | 0x3f54989a, 0x5b429d65, 0x6b8fe4d6, 0x99f73fd6, | ||
383 | 0xa1d29c07, 0xefe830f5, 0x4d2d38e6, 0xf0255dc1, | ||
384 | 0x4cdd2086, 0x8470eb26, 0x6382e9c6, 0x021ecc5e, | ||
385 | 0x09686b3f, 0x3ebaefc9, 0x3c971814, 0x6b6a70a1, | ||
386 | 0x687f3584, 0x52a0e286, 0xb79c5305, 0xaa500737, | ||
387 | 0x3e07841c, 0x7fdeae5c, 0x8e7d44ec, 0x5716f2b8, | ||
388 | 0xb03ada37, 0xf0500c0d, 0xf01c1f04, 0x0200b3ff, | ||
389 | 0xae0cf51a, 0x3cb574b2, 0x25837a58, 0xdc0921bd, | ||
390 | 0xd19113f9, 0x7ca92ff6, 0x94324773, 0x22f54701, | ||
391 | 0x3ae5e581, 0x37c2dadc, 0xc8b57634, 0x9af3dda7, | ||
392 | 0xa9446146, 0x0fd0030e, 0xecc8c73e, 0xa4751e41, | ||
393 | 0xe238cd99, 0x3bea0e2f, 0x3280bba1, 0x183eb331, | ||
394 | 0x4e548b38, 0x4f6db908, 0x6f420d03, 0xf60a04bf, | ||
395 | 0x2cb81290, 0x24977c79, 0x5679b072, 0xbcaf89af, | ||
396 | 0xde9a771f, 0xd9930810, 0xb38bae12, 0xdccf3f2e, | ||
397 | 0x5512721f, 0x2e6b7124, 0x501adde6, 0x9f84cd87, | ||
398 | 0x7a584718, 0x7408da17, 0xbc9f9abc, 0xe94b7d8c, | ||
399 | 0xec7aec3a, 0xdb851dfa, 0x63094366, 0xc464c3d2, | ||
400 | 0xef1c1847, 0x3215d908, 0xdd433b37, 0x24c2ba16, | ||
401 | 0x12a14d43, 0x2a65c451, 0x50940002, 0x133ae4dd, | ||
402 | 0x71dff89e, 0x10314e55, 0x81ac77d6, 0x5f11199b, | ||
403 | 0x043556f1, 0xd7a3c76b, 0x3c11183b, 0x5924a509, | ||
404 | 0xf28fe6ed, 0x97f1fbfa, 0x9ebabf2c, 0x1e153c6e, | ||
405 | 0x86e34570, 0xeae96fb1, 0x860e5e0a, 0x5a3e2ab3, | ||
406 | 0x771fe71c, 0x4e3d06fa, 0x2965dcb9, 0x99e71d0f, | ||
407 | 0x803e89d6, 0x5266c825, 0x2e4cc978, 0x9c10b36a, | ||
408 | 0xc6150eba, 0x94e2ea78, 0xa5fc3c53, 0x1e0a2df4, | ||
409 | 0xf2f74ea7, 0x361d2b3d, 0x1939260f, 0x19c27960, | ||
410 | 0x5223a708, 0xf71312b6, 0xebadfe6e, 0xeac31f66, | ||
411 | 0xe3bc4595, 0xa67bc883, 0xb17f37d1, 0x018cff28, | ||
412 | 0xc332ddef, 0xbe6c5aa5, 0x65582185, 0x68ab9802, | ||
413 | 0xeecea50f, 0xdb2f953b, 0x2aef7dad, 0x5b6e2f84, | ||
414 | 0x1521b628, 0x29076170, 0xecdd4775, 0x619f1510, | ||
415 | 0x13cca830, 0xeb61bd96, 0x0334fe1e, 0xaa0363cf, | ||
416 | 0xb5735c90, 0x4c70a239, 0xd59e9e0b, 0xcbaade14, | ||
417 | 0xeecc86bc, 0x60622ca7, 0x9cab5cab, 0xb2f3846e, | ||
418 | 0x648b1eaf, 0x19bdf0ca, 0xa02369b9, 0x655abb50, | ||
419 | 0x40685a32, 0x3c2ab4b3, 0x319ee9d5, 0xc021b8f7, | ||
420 | 0x9b540b19, 0x875fa099, 0x95f7997e, 0x623d7da8, | ||
421 | 0xf837889a, 0x97e32d77, 0x11ed935f, 0x16681281, | ||
422 | 0x0e358829, 0xc7e61fd6, 0x96dedfa1, 0x7858ba99, | ||
423 | 0x57f584a5, 0x1b227263, 0x9b83c3ff, 0x1ac24696, | ||
424 | 0xcdb30aeb, 0x532e3054, 0x8fd948e4, 0x6dbc3128, | ||
425 | 0x58ebf2ef, 0x34c6ffea, 0xfe28ed61, 0xee7c3c73, | ||
426 | 0x5d4a14d9, 0xe864b7e3, 0x42105d14, 0x203e13e0, | ||
427 | 0x45eee2b6, 0xa3aaabea, 0xdb6c4f15, 0xfacb4fd0, | ||
428 | 0xc742f442, 0xef6abbb5, 0x654f3b1d, 0x41cd2105, | ||
429 | 0xd81e799e, 0x86854dc7, 0xe44b476a, 0x3d816250, | ||
430 | 0xcf62a1f2, 0x5b8d2646, 0xfc8883a0, 0xc1c7b6a3, | ||
431 | 0x7f1524c3, 0x69cb7492, 0x47848a0b, 0x5692b285, | ||
432 | 0x095bbf00, 0xad19489d, 0x1462b174, 0x23820e00, | ||
433 | 0x58428d2a, 0x0c55f5ea, 0x1dadf43e, 0x233f7061, | ||
434 | 0x3372f092, 0x8d937e41, 0xd65fecf1, 0x6c223bdb, | ||
435 | 0x7cde3759, 0xcbee7460, 0x4085f2a7, 0xce77326e, | ||
436 | 0xa6078084, 0x19f8509e, 0xe8efd855, 0x61d99735, | ||
437 | 0xa969a7aa, 0xc50c06c2, 0x5a04abfc, 0x800bcadc, | ||
438 | 0x9e447a2e, 0xc3453484, 0xfdd56705, 0x0e1e9ec9, | ||
439 | 0xdb73dbd3, 0x105588cd, 0x675fda79, 0xe3674340, | ||
440 | 0xc5c43465, 0x713e38d8, 0x3d28f89e, 0xf16dff20, | ||
441 | 0x153e21e7, 0x8fb03d4a, 0xe6e39f2b, 0xdb83adf7, | ||
442 | 0xe93d5a68, 0x948140f7, 0xf64c261c, 0x94692934, | ||
443 | 0x411520f7, 0x7602d4f7, 0xbcf46b2e, 0xd4a20068, | ||
444 | 0xd4082471, 0x3320f46a, 0x43b7d4b7, 0x500061af, | ||
445 | 0x1e39f62e, 0x97244546, 0x14214f74, 0xbf8b8840, | ||
446 | 0x4d95fc1d, 0x96b591af, 0x70f4ddd3, 0x66a02f45, | ||
447 | 0xbfbc09ec, 0x03bd9785, 0x7fac6dd0, 0x31cb8504, | ||
448 | 0x96eb27b3, 0x55fd3941, 0xda2547e6, 0xabca0a9a, | ||
449 | 0x28507825, 0x530429f4, 0x0a2c86da, 0xe9b66dfb, | ||
450 | 0x68dc1462, 0xd7486900, 0x680ec0a4, 0x27a18dee, | ||
451 | 0x4f3ffea2, 0xe887ad8c, 0xb58ce006, 0x7af4d6b6, | ||
452 | 0xaace1e7c, 0xd3375fec, 0xce78a399, 0x406b2a42, | ||
453 | 0x20fe9e35, 0xd9f385b9, 0xee39d7ab, 0x3b124e8b, | ||
454 | 0x1dc9faf7, 0x4b6d1856, 0x26a36631, 0xeae397b2, | ||
455 | 0x3a6efa74, 0xdd5b4332, 0x6841e7f7, 0xca7820fb, | ||
456 | 0xfb0af54e, 0xd8feb397, 0x454056ac, 0xba489527, | ||
457 | 0x55533a3a, 0x20838d87, 0xfe6ba9b7, 0xd096954b, | ||
458 | 0x55a867bc, 0xa1159a58, 0xcca92963, 0x99e1db33, | ||
459 | 0xa62a4a56, 0x3f3125f9, 0x5ef47e1c, 0x9029317c, | ||
460 | 0xfdf8e802, 0x04272f70, 0x80bb155c, 0x05282ce3, | ||
461 | 0x95c11548, 0xe4c66d22, 0x48c1133f, 0xc70f86dc, | ||
462 | 0x07f9c9ee, 0x41041f0f, 0x404779a4, 0x5d886e17, | ||
463 | 0x325f51eb, 0xd59bc0d1, 0xf2bcc18f, 0x41113564, | ||
464 | 0x257b7834, 0x602a9c60, 0xdff8e8a3, 0x1f636c1b, | ||
465 | 0x0e12b4c2, 0x02e1329e, 0xaf664fd1, 0xcad18115, | ||
466 | 0x6b2395e0, 0x333e92e1, 0x3b240b62, 0xeebeb922, | ||
467 | 0x85b2a20e, 0xe6ba0d99, 0xde720c8c, 0x2da2f728, | ||
468 | 0xd0127845, 0x95b794fd, 0x647d0862, 0xe7ccf5f0, | ||
469 | 0x5449a36f, 0x877d48fa, 0xc39dfd27, 0xf33e8d1e, | ||
470 | 0x0a476341, 0x992eff74, 0x3a6f6eab, 0xf4f8fd37, | ||
471 | 0xa812dc60, 0xa1ebddf8, 0x991be14c, 0xdb6e6b0d, | ||
472 | 0xc67b5510, 0x6d672c37, 0x2765d43b, 0xdcd0e804, | ||
473 | 0xf1290dc7, 0xcc00ffa3, 0xb5390f92, 0x690fed0b, | ||
474 | 0x667b9ffb, 0xcedb7d9c, 0xa091cf0b, 0xd9155ea3, | ||
475 | 0xbb132f88, 0x515bad24, 0x7b9479bf, 0x763bd6eb, | ||
476 | 0x37392eb3, 0xcc115979, 0x8026e297, 0xf42e312d, | ||
477 | 0x6842ada7, 0xc66a2b3b, 0x12754ccc, 0x782ef11c, | ||
478 | 0x6a124237, 0xb79251e7, 0x06a1bbe6, 0x4bfb6350, | ||
479 | 0x1a6b1018, 0x11caedfa, 0x3d25bdd8, 0xe2e1c3c9, | ||
480 | 0x44421659, 0x0a121386, 0xd90cec6e, 0xd5abea2a, | ||
481 | 0x64af674e, 0xda86a85f, 0xbebfe988, 0x64e4c3fe, | ||
482 | 0x9dbc8057, 0xf0f7c086, 0x60787bf8, 0x6003604d, | ||
483 | 0xd1fd8346, 0xf6381fb0, 0x7745ae04, 0xd736fccc, | ||
484 | 0x83426b33, 0xf01eab71, 0xb0804187, 0x3c005e5f, | ||
485 | 0x77a057be, 0xbde8ae24, 0x55464299, 0xbf582e61, | ||
486 | 0x4e58f48f, 0xf2ddfda2, 0xf474ef38, 0x8789bdc2, | ||
487 | 0x5366f9c3, 0xc8b38e74, 0xb475f255, 0x46fcd9b9, | ||
488 | 0x7aeb2661, 0x8b1ddf84, 0x846a0e79, 0x915f95e2, | ||
489 | 0x466e598e, 0x20b45770, 0x8cd55591, 0xc902de4c, | ||
490 | 0xb90bace1, 0xbb8205d0, 0x11a86248, 0x7574a99e, | ||
491 | 0xb77f19b6, 0xe0a9dc09, 0x662d09a1, 0xc4324633, | ||
492 | 0xe85a1f02, 0x09f0be8c, 0x4a99a025, 0x1d6efe10, | ||
493 | 0x1ab93d1d, 0x0ba5a4df, 0xa186f20f, 0x2868f169, | ||
494 | 0xdcb7da83, 0x573906fe, 0xa1e2ce9b, 0x4fcd7f52, | ||
495 | 0x50115e01, 0xa70683fa, 0xa002b5c4, 0x0de6d027, | ||
496 | 0x9af88c27, 0x773f8641, 0xc3604c06, 0x61a806b5, | ||
497 | 0xf0177a28, 0xc0f586e0, 0x006058aa, 0x30dc7d62, | ||
498 | 0x11e69ed7, 0x2338ea63, 0x53c2dd94, 0xc2c21634, | ||
499 | 0xbbcbee56, 0x90bcb6de, 0xebfc7da1, 0xce591d76, | ||
500 | 0x6f05e409, 0x4b7c0188, 0x39720a3d, 0x7c927c24, | ||
501 | 0x86e3725f, 0x724d9db9, 0x1ac15bb4, 0xd39eb8fc, | ||
502 | 0xed545578, 0x08fca5b5, 0xd83d7cd3, 0x4dad0fc4, | ||
503 | 0x1e50ef5e, 0xb161e6f8, 0xa28514d9, 0x6c51133c, | ||
504 | 0x6fd5c7e7, 0x56e14ec4, 0x362abfce, 0xddc6c837, | ||
505 | 0xd79a3234, 0x92638212, 0x670efa8e, 0x406000e0, | ||
506 | 0x3a39ce37, 0xd3faf5cf, 0xabc27737, 0x5ac52d1b, | ||
507 | 0x5cb0679e, 0x4fa33742, 0xd3822740, 0x99bc9bbe, | ||
508 | 0xd5118e9d, 0xbf0f7315, 0xd62d1c7e, 0xc700c47b, | ||
509 | 0xb78c1b6b, 0x21a19045, 0xb26eb1be, 0x6a366eb4, | ||
510 | 0x5748ab2f, 0xbc946e79, 0xc6a376d2, 0x6549c2c8, | ||
511 | 0x530ff8ee, 0x468dde7d, 0xd5730a1d, 0x4cd04dc6, | ||
512 | 0x2939bbdb, 0xa9ba4650, 0xac9526e8, 0xbe5ee304, | ||
513 | 0xa1fad5f0, 0x6a2d519a, 0x63ef8ce2, 0x9a86ee22, | ||
514 | 0xc089c2b8, 0x43242ef6, 0xa51e03aa, 0x9cf2d0a4, | ||
515 | 0x83c061ba, 0x9be96a4d, 0x8fe51550, 0xba645bd6, | ||
516 | 0x2826a2f9, 0xa73a3ae1, 0x4ba99586, 0xef5562e9, | ||
517 | 0xc72fefd3, 0xf752f7da, 0x3f046f69, 0x77fa0a59, | ||
518 | 0x80e4a915, 0x87b08601, 0x9b09e6ad, 0x3b3ee593, | ||
519 | 0xe990fd5a, 0x9e34d797, 0x2cf0b7d9, 0x022b8b51, | ||
520 | 0x96d5ac3a, 0x017da67d, 0xd1cf3ed6, 0x7c7d2d28, | ||
521 | 0x1f9f25cf, 0xadf2b89b, 0x5ad6b472, 0x5a88f54c, | ||
522 | 0xe029ac71, 0xe019a5e6, 0x47b0acfd, 0xed93fa9b, | ||
523 | 0xe8d3c48d, 0x283b57cc, 0xf8d56629, 0x79132e28, | ||
524 | 0x785f0191, 0xed756055, 0xf7960e44, 0xe3d35e8c, | ||
525 | 0x15056dd4, 0x88f46dba, 0x03a16125, 0x0564f0bd, | ||
526 | 0xc3eb9e15, 0x3c9057a2, 0x97271aec, 0xa93a072a, | ||
527 | 0x1b3f6d9b, 0x1e6321f5, 0xf59c66fb, 0x26dcf319, | ||
528 | 0x7533d928, 0xb155fdf5, 0x03563482, 0x8aba3cbb, | ||
529 | 0x28517711, 0xc20ad9f8, 0xabcc5167, 0xccad925f, | ||
530 | 0x4de81751, 0x3830dc8e, 0x379d5862, 0x9320f991, | ||
531 | 0xea7a90c2, 0xfb3e7bce, 0x5121ce64, 0x774fbe32, | ||
532 | 0xa8b6e37e, 0xc3293d46, 0x48de5369, 0x6413e680, | ||
533 | 0xa2ae0810, 0xdd6db224, 0x69852dfd, 0x09072166, | ||
534 | 0xb39a460a, 0x6445c0dd, 0x586cdecf, 0x1c20c8ae, | ||
535 | 0x5bbef7dd, 0x1b588d40, 0xccd2017f, 0x6bb4e3bb, | ||
536 | 0xdda26a7e, 0x3a59ff45, 0x3e350a44, 0xbcb4cdd5, | ||
537 | 0x72eacea8, 0xfa6484bb, 0x8d6612ae, 0xbf3c6f47, | ||
538 | 0xd29be463, 0x542f5d9e, 0xaec2771b, 0xf64e6370, | ||
539 | 0x740e0d8d, 0xe75b1357, 0xf8721671, 0xaf537d5d, | ||
540 | 0x4040cb08, 0x4eb4e2cc, 0x34d2466a, 0x0115af84, | ||
541 | 0xe1b00428, 0x95983a1d, 0x06b89fb4, 0xce6ea048, | ||
542 | 0x6f3f3b82, 0x3520ab82, 0x011a1d4b, 0x277227f8, | ||
543 | 0x611560b1, 0xe7933fdc, 0xbb3a792b, 0x344525bd, | ||
544 | 0xa08839e1, 0x51ce794b, 0x2f32c9b7, 0xa01fbac9, | ||
545 | 0xe01cc87e, 0xbcc7d1f6, 0xcf0111c3, 0xa1e8aac7, | ||
546 | 0x1a908749, 0xd44fbd9a, 0xd0dadecb, 0xd50ada38, | ||
547 | 0x0339c32a, 0xc6913667, 0x8df9317c, 0xe0b12b4f, | ||
548 | 0xf79e59b7, 0x43f5bb3a, 0xf2d519ff, 0x27d9459c, | ||
549 | 0xbf97222c, 0x15e6fc2a, 0x0f91fc71, 0x9b941525, | ||
550 | 0xfae59361, 0xceb69ceb, 0xc2a86459, 0x12baa8d1, | ||
551 | 0xb6c1075e, 0xe3056a0c, 0x10d25065, 0xcb03a442, | ||
552 | 0xe0ec6e0e, 0x1698db3b, 0x4c98a0be, 0x3278e964, | ||
553 | 0x9f1f9532, 0xe0d392df, 0xd3a0342b, 0x8971f21e, | ||
554 | 0x1b0a7441, 0x4ba3348c, 0xc5be7120, 0xc37632d8, | ||
555 | 0xdf359f8d, 0x9b992f2e, 0xe60b6f47, 0x0fe3f11d, | ||
556 | 0xe54cda54, 0x1edad891, 0xce6279cf, 0xcd3e7e6f, | ||
557 | 0x1618b166, 0xfd2c1d05, 0x848fd2c5, 0xf6fb2299, | ||
558 | 0xf523f357, 0xa6327623, 0x93a83531, 0x56cccd02, | ||
559 | 0xacf08162, 0x5a75ebb5, 0x6e163697, 0x88d273cc, | ||
560 | 0xde966292, 0x81b949d0, 0x4c50901b, 0x71c65614, | ||
561 | 0xe6c6c7bd, 0x327a140a, 0x45e1d006, 0xc3f27b9a, | ||
562 | 0xc9aa53fd, 0x62a80f00, 0xbb25bfe2, 0x35bdd2f6, | ||
563 | 0x71126905, 0xb2040222, 0xb6cbcf7c, 0xcd769c2b, | ||
564 | 0x53113ec0, 0x1640e3d3, 0x38abbd60, 0x2547adf0, | ||
565 | 0xba38209c, 0xf746ce76, 0x77afa1c5, 0x20756060, | ||
566 | 0x85cbfe4e, 0x8ae88dd8, 0x7aaaf9b0, 0x4cf9aa7e, | ||
567 | 0x1948c25c, 0x02fb8a8c, 0x01c36ae4, 0xd6ebe1f9, | ||
568 | 0x90d4f869, 0xa65cdea0, 0x3f09252d, 0xc208e69f, | ||
569 | 0xb74e6132, 0xce77e25b, 0x578fdfe3, 0x3ac372e6 | ||
570 | }; | ||
571 | |||
572 | #define EROUND(l,r) l ^= *(p++); r ^= ((s[((l>>24)&0xff)+0x000]+s[((l>>16)&0xff)+0x100])^s[((l>>8)&0xff)+0x200])+s[((l>>0)&0xff)+0x300] | ||
573 | #define DROUND(l,r) l ^= *(p--); r ^= ((s[((l>>24)&0xff)+0x000]+s[((l>>16)&0xff)+0x100])^s[((l>>8)&0xff)+0x200])+s[((l>>0)&0xff)+0x300] | ||
574 | |||
575 | static int blowfishEncrypt(struct blowfishParam* bp, uint32_t* dst, const uint32_t* src) | ||
576 | { | ||
577 | #if WORDS_BIGENDIAN | ||
578 | register uint32_t xl = src[0], xr = src[1]; | ||
579 | #else | ||
580 | register uint32_t xl = swapu32(src[0]), xr = swapu32(src[1]); | ||
581 | #endif | ||
582 | register uint32_t* p = bp->p; | ||
583 | register uint32_t* s = bp->s; | ||
584 | |||
585 | EROUND(xl, xr); EROUND(xr, xl); | ||
586 | EROUND(xl, xr); EROUND(xr, xl); | ||
587 | EROUND(xl, xr); EROUND(xr, xl); | ||
588 | EROUND(xl, xr); EROUND(xr, xl); | ||
589 | EROUND(xl, xr); EROUND(xr, xl); | ||
590 | EROUND(xl, xr); EROUND(xr, xl); | ||
591 | EROUND(xl, xr); EROUND(xr, xl); | ||
592 | EROUND(xl, xr); EROUND(xr, xl); | ||
593 | |||
594 | #if WORDS_BIGENDIAN | ||
595 | dst[1] = xl ^ *(p++); | ||
596 | dst[0] = xr ^ *(p++); | ||
597 | #else | ||
598 | dst[1] = swapu32(xl ^ *(p++)); | ||
599 | dst[0] = swapu32(xr ^ *(p++)); | ||
600 | #endif | ||
601 | |||
602 | return 0; | ||
603 | } | ||
604 | |||
605 | static int blowfishDecrypt(struct blowfishParam* bp, uint32_t* dst, const uint32_t* src) | ||
606 | { | ||
607 | #if WORDS_BIGENDIAN | ||
608 | register uint32_t xl = src[0], xr = src[1]; | ||
609 | #else | ||
610 | register uint32_t xl = swapu32(src[0]), xr = swapu32(src[1]); | ||
611 | #endif | ||
612 | register uint32_t* p = bp->p+BLOWFISHPSIZE-1; | ||
613 | register uint32_t* s = bp->s; | ||
614 | |||
615 | DROUND(xl, xr); DROUND(xr, xl); | ||
616 | DROUND(xl, xr); DROUND(xr, xl); | ||
617 | DROUND(xl, xr); DROUND(xr, xl); | ||
618 | DROUND(xl, xr); DROUND(xr, xl); | ||
619 | DROUND(xl, xr); DROUND(xr, xl); | ||
620 | DROUND(xl, xr); DROUND(xr, xl); | ||
621 | DROUND(xl, xr); DROUND(xr, xl); | ||
622 | DROUND(xl, xr); DROUND(xr, xl); | ||
623 | |||
624 | #if WORDS_BIGENDIAN | ||
625 | dst[1] = xl ^ *(p--); | ||
626 | dst[0] = xr ^ *(p--); | ||
627 | #else | ||
628 | dst[1] = swapu32(xl ^ *(p--)); | ||
629 | dst[0] = swapu32(xr ^ *(p--)); | ||
630 | #endif | ||
631 | |||
632 | return 0; | ||
633 | } | ||
634 | |||
635 | static int blowfishSetup(struct blowfishParam* bp, const unsigned char* key, size_t keybits, cipherOperation op) | ||
636 | { | ||
637 | if ((op != ENCRYPT) && (op != DECRYPT)) | ||
638 | return -1; | ||
639 | |||
640 | if (((keybits & 7) == 0) && (keybits >= 32) && (keybits <= 448)) | ||
641 | { | ||
642 | register uint32_t* p = bp->p; | ||
643 | register uint32_t* s = bp->s; | ||
644 | register unsigned int i, j, k; | ||
645 | |||
646 | uint32_t tmp, work[2]; | ||
647 | |||
648 | memcpy(s, _bf_s, 1024 * sizeof(uint32_t)); | ||
649 | |||
650 | for (i = 0, k = 0; i < BLOWFISHPSIZE; i++) | ||
651 | { | ||
652 | tmp = 0; | ||
653 | for (j = 0; j < 4; j++) | ||
654 | { | ||
655 | tmp <<= 8; | ||
656 | tmp |= key[k++]; | ||
657 | if (k >= (keybits >> 3)) | ||
658 | k = 0; | ||
659 | } | ||
660 | p[i] = _bf_p[i] ^ tmp; | ||
661 | } | ||
662 | |||
663 | work[0] = work[1] = 0; | ||
664 | |||
665 | for (i = 0; i < BLOWFISHPSIZE; i += 2, p += 2) | ||
666 | { | ||
667 | blowfishEncrypt(bp, work, work); | ||
668 | #if WORDS_BIGENDIAN | ||
669 | p[0] = work[0]; | ||
670 | p[1] = work[1]; | ||
671 | #else | ||
672 | p[0] = swapu32(work[0]); | ||
673 | p[1] = swapu32(work[1]); | ||
674 | #endif | ||
675 | } | ||
676 | |||
677 | for (i = 0; i < 1024; i += 2, s += 2) | ||
678 | { | ||
679 | blowfishEncrypt(bp, work, work); | ||
680 | #if WORDS_BIGENDIAN | ||
681 | s[0] = work[0]; | ||
682 | s[1] = work[1]; | ||
683 | #else | ||
684 | s[0] = swapu32(work[0]); | ||
685 | s[1] = swapu32(work[1]); | ||
686 | #endif | ||
687 | } | ||
688 | |||
689 | /* clear fdback/iv */ | ||
690 | bp->fdback[0] = 0; | ||
691 | bp->fdback[1] = 0; | ||
692 | |||
693 | return 0; | ||
694 | } | ||
695 | return -1; | ||
696 | } | ||
697 | |||
698 | static int blowfishSetIV(struct blowfishParam* bp, const unsigned char* iv) | ||
699 | { | ||
700 | if (iv) | ||
701 | memcpy(bp->fdback, iv, 8); | ||
702 | else | ||
703 | memset(bp->fdback, 0, 8); | ||
704 | |||
705 | return 0; | ||
706 | } | ||
707 | |||
708 | #define BLOWFISH_BLOCKSIZE 8 | ||
709 | static int blowfishDecryptCBC(struct blowfishParam* bp, uint32_t* dst, const uint32_t* src, unsigned int nblocks) | ||
710 | { | ||
711 | register const unsigned int blockwords = BLOWFISH_BLOCKSIZE >> 2; | ||
712 | register uint32_t* fdback = bp->fdback; | ||
713 | register uint32_t* buf = (uint32_t*) malloc(blockwords * sizeof(uint32_t)); | ||
714 | |||
715 | if (buf) | ||
716 | { | ||
717 | while (nblocks > 0) | ||
718 | { | ||
719 | register uint32_t tmp; | ||
720 | register unsigned int i; | ||
721 | |||
722 | blowfishDecrypt(bp, buf, src); | ||
723 | |||
724 | for (i = 0; i < blockwords; i++) | ||
725 | { | ||
726 | tmp = src[i]; | ||
727 | dst[i] = buf[i] ^ fdback[i]; | ||
728 | fdback[i] = tmp; | ||
729 | } | ||
730 | |||
731 | dst += blockwords; | ||
732 | src += blockwords; | ||
733 | |||
734 | nblocks--; | ||
735 | } | ||
736 | free(buf); | ||
737 | return 0; | ||
738 | } | ||
739 | |||
740 | return -1; | ||
741 | } | ||
742 | |||
743 | bool bf_cbc_decrypt(const unsigned char* key, size_t keylen, | ||
744 | unsigned char* data, size_t datalen, | ||
745 | const unsigned char* iv) | ||
746 | { | ||
747 | struct blowfishParam param; | ||
748 | unsigned char *cipher; | ||
749 | unsigned int nblocks; | ||
750 | |||
751 | if (datalen % BLOWFISH_BLOCKSIZE) | ||
752 | return false; | ||
753 | |||
754 | if (blowfishSetup(¶m, key, keylen * 8, ENCRYPT)) | ||
755 | return false; | ||
756 | if (blowfishSetIV(¶m, iv)) | ||
757 | return false; | ||
758 | |||
759 | cipher = malloc(datalen); | ||
760 | memcpy(cipher, data, datalen); | ||
761 | |||
762 | nblocks = datalen / BLOWFISH_BLOCKSIZE; | ||
763 | if (blowfishDecryptCBC(¶m, (uint32_t*)data, (uint32_t*)cipher, | ||
764 | nblocks)) | ||
765 | { | ||
766 | free(cipher); | ||
767 | return false; | ||
768 | } | ||
769 | |||
770 | free(cipher); | ||
771 | return true; | ||
772 | } | ||
773 | |||
774 | uint32_t swap(uint32_t val) | ||
775 | { | ||
776 | return ((val & 0xFF) << 24) | ||
777 | | ((val & 0xFF00) << 8) | ||
778 | | ((val & 0xFF0000) >> 8) | ||
779 | | ((val & 0xFF000000) >> 24); | ||
780 | } | ||
781 | |||
782 | /* read a file to a buffer */ | ||
783 | enum zen_error_t read_file(const char *file, void **buffer, size_t *size) | ||
784 | { | ||
785 | FILE *f = fopen(file, "rb"); | ||
786 | if(f == NULL) | ||
787 | { | ||
788 | printf("[ERR] Cannot open file '%s' for reading: %m\n", file); | ||
789 | return ZEN_OPEN_ERROR; | ||
790 | } | ||
791 | fseek(f, 0, SEEK_END); | ||
792 | *size = ftell(f); | ||
793 | fseek(f, 0, SEEK_SET); | ||
794 | *buffer = malloc(*size); | ||
795 | if(fread(*buffer, *size, 1, f) != 1) | ||
796 | { | ||
797 | free(*buffer); | ||
798 | fclose(f); | ||
799 | printf("[ERR] Cannot read file '%s': %m\n", file); | ||
800 | return ZEN_READ_ERROR; | ||
801 | } | ||
802 | fclose(f); | ||
803 | return ZEN_SUCCESS; | ||
804 | } | ||
805 | |||
806 | /* write a file from a buffer */ | ||
807 | enum zen_error_t write_file(const char *file, void *buffer, size_t size) | ||
808 | { | ||
809 | FILE *f = fopen(file, "wb"); | ||
810 | if(f == NULL) | ||
811 | { | ||
812 | printf("[ERR] Cannot open file '%s' for writing: %m\n", file); | ||
813 | return ZEN_OPEN_ERROR; | ||
814 | } | ||
815 | if(fwrite(buffer, size, 1, f) != 1) | ||
816 | { | ||
817 | fclose(f); | ||
818 | printf("[ERR] Cannot write file '%s': %m\n", file); | ||
819 | return ZEN_WRITE_ERROR; | ||
820 | } | ||
821 | fclose(f); | ||
822 | return ZEN_SUCCESS; | ||
823 | } | ||
824 | |||
825 | /* compute MD5 sum of a buffer */ | ||
826 | enum zen_error_t compute_md5sum_buf(void *buf, size_t sz, uint8_t file_md5sum[16]) | ||
827 | { | ||
828 | md5_context ctx; | ||
829 | md5_starts(&ctx); | ||
830 | md5_update(&ctx, buf, sz); | ||
831 | md5_finish(&ctx, file_md5sum); | ||
832 | return ZEN_SUCCESS; | ||
833 | } | ||
834 | |||
835 | /* compute MD5 of a file */ | ||
836 | enum zen_error_t compute_md5sum(const char *file, uint8_t file_md5sum[16]) | ||
837 | { | ||
838 | void *buf; | ||
839 | size_t sz; | ||
840 | enum zen_error_t err = read_file(file, &buf, &sz); | ||
841 | if(err != ZEN_SUCCESS) | ||
842 | return err; | ||
843 | compute_md5sum_buf(buf, sz, file_md5sum); | ||
844 | free(buf); | ||
845 | return ZEN_SUCCESS; | ||
846 | } | ||
847 | |||
848 | enum zen_error_t find_pe_data(void *fw, size_t fw_size, uint32_t *data_ptr, uint32_t *data_size) | ||
849 | { | ||
850 | uint8_t *buffer = fw; | ||
851 | /* Rudimentary Win32 PE reading to find .data section */ | ||
852 | if(memcmp(&buffer[0], "MZ", 2) != 0 && memcmp(&buffer[0x118], "PE", 2) != 0) | ||
853 | { | ||
854 | printf("[ERR] Input file isn't an executable\n"); | ||
855 | return ZEN_FW_INVALID; | ||
856 | } | ||
857 | *data_ptr = 0, *data_size = 0; | ||
858 | uint32_t start_sec_addr = /*sizeof NT headers */ 0xf8 + | ||
859 | /* address of opt header */*(uint32_t *)&buffer[0x3c]; | ||
860 | for(uint32_t i = start_sec_addr; i < 0x1000; i += 0x28) | ||
861 | { | ||
862 | if(strcmp((char*)&buffer[i], ".data") == 0) | ||
863 | { | ||
864 | *data_ptr = le2int(&buffer[i + 0x14]); | ||
865 | *data_size = le2int(&buffer[i + 0x10]); | ||
866 | break; | ||
867 | } | ||
868 | } | ||
869 | if(*data_ptr == 0 || *data_size == 0) | ||
870 | { | ||
871 | printf("[ERR] Couldn't find .data section\n"); | ||
872 | return ZEN_FW_INVALID; | ||
873 | } | ||
874 | return ZEN_SUCCESS; | ||
875 | } | ||
876 | |||
877 | int convxdigit(char digit, uint8_t *val) | ||
878 | { | ||
879 | if(digit >= '0' && digit <= '9') | ||
880 | { | ||
881 | *val = digit - '0'; | ||
882 | return 0; | ||
883 | } | ||
884 | else if(digit >= 'A' && digit <= 'F') | ||
885 | { | ||
886 | *val = digit - 'A' + 10; | ||
887 | return 0; | ||
888 | } | ||
889 | else if(digit >= 'a' && digit <= 'f') | ||
890 | { | ||
891 | *val = digit - 'a' + 10; | ||
892 | return 0; | ||
893 | } | ||
894 | else | ||
895 | return 1; | ||
896 | } | ||