1 : /*
2 : +----------------------------------------------------------------------+
3 : | PHP Version 5 |
4 : +----------------------------------------------------------------------+
5 : | Copyright (c) 1997-2009 The PHP Group |
6 : +----------------------------------------------------------------------+
7 : | This source file is subject to version 3.01 of the PHP license, |
8 : | that is bundled with this package in the file LICENSE, and is |
9 : | available through the world-wide-web at the following url: |
10 : | http://www.php.net/license/3_01.txt |
11 : | If you did not receive a copy of the PHP license and are unable to |
12 : | obtain it through the world-wide-web, please send a note to |
13 : | license@php.net so we can mail you a copy immediately. |
14 : +----------------------------------------------------------------------+
15 : | Taken from: ext/standard/md5.c |
16 : +----------------------------------------------------------------------+
17 : */
18 :
19 : /* $Id: hash_md.c 272370 2008-12-31 11:15:49Z sebastian $ */
20 :
21 : #include "php_hash.h"
22 : #include "php_hash_md.h"
23 :
24 : const php_hash_ops php_hash_md5_ops = {
25 : (php_hash_init_func_t) PHP_MD5Init,
26 : (php_hash_update_func_t) PHP_MD5Update,
27 : (php_hash_final_func_t) PHP_MD5Final,
28 : (php_hash_copy_func_t) php_hash_copy,
29 : 16,
30 : 64,
31 : sizeof(PHP_MD5_CTX)
32 : };
33 :
34 : const php_hash_ops php_hash_md4_ops = {
35 : (php_hash_init_func_t) PHP_MD4Init,
36 : (php_hash_update_func_t) PHP_MD4Update,
37 : (php_hash_final_func_t) PHP_MD4Final,
38 : (php_hash_copy_func_t) php_hash_copy,
39 : 16,
40 : 64,
41 : sizeof(PHP_MD4_CTX)
42 : };
43 :
44 : const php_hash_ops php_hash_md2_ops = {
45 : (php_hash_init_func_t) PHP_MD2Init,
46 : (php_hash_update_func_t) PHP_MD2Update,
47 : (php_hash_final_func_t) PHP_MD2Final,
48 : (php_hash_copy_func_t) php_hash_copy,
49 : 16,
50 : 16,
51 : sizeof(PHP_MD2_CTX)
52 : };
53 :
54 : /* MD common stuff */
55 :
56 : static const unsigned char PADDING[64] =
57 : {
58 : 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
59 : 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
60 : 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
61 : };
62 :
63 : /* {{{ Encode
64 : Encodes input (php_hash_uint32) into output (unsigned char). Assumes len is
65 : a multiple of 4.
66 : */
67 : static void Encode(unsigned char *output, php_hash_uint32 *input, unsigned int len)
68 32 : {
69 : unsigned int i, j;
70 :
71 128 : for (i = 0, j = 0; j < len; i++, j += 4) {
72 96 : output[j] = (unsigned char) (input[i] & 0xff);
73 96 : output[j + 1] = (unsigned char) ((input[i] >> 8) & 0xff);
74 96 : output[j + 2] = (unsigned char) ((input[i] >> 16) & 0xff);
75 96 : output[j + 3] = (unsigned char) ((input[i] >> 24) & 0xff);
76 : }
77 32 : }
78 : /* }}} */
79 :
80 : /* {{{ Decode
81 : Decodes input (unsigned char) into output (php_hash_uint32). Assumes len is
82 : a multiple of 4.
83 : */
84 : static void Decode(php_hash_uint32 *output, const unsigned char *input, unsigned int len)
85 26 : {
86 : unsigned int i, j;
87 :
88 442 : for (i = 0, j = 0; j < len; i++, j += 4)
89 416 : output[i] = ((php_hash_uint32) input[j]) | (((php_hash_uint32) input[j + 1]) << 8) |
90 : (((php_hash_uint32) input[j + 2]) << 16) | (((php_hash_uint32) input[j + 3]) << 24);
91 26 : }
92 : /* }}} */
93 :
94 : #ifdef PHP_HASH_MD5_NOT_IN_CORE
95 :
96 : /* MD5 */
97 :
98 : PHP_HASH_API void make_digest(char *md5str, unsigned char *digest)
99 : {
100 : php_hash_bin2hex(md5str, digest, 16);
101 : md5str[32] = '\0';
102 : }
103 :
104 : /* {{{ proto string md5(string str, [ bool raw_output])
105 : Calculate the md5 hash of a string */
106 : PHP_NAMED_FUNCTION(php_if_md5)
107 : {
108 : char *arg;
109 : int arg_len;
110 : zend_bool raw_output = 0;
111 : char md5str[33];
112 : PHP_MD5_CTX context;
113 : unsigned char digest[16];
114 :
115 : if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s|b", &arg, &arg_len, &raw_output) == FAILURE) {
116 : return;
117 : }
118 :
119 : md5str[0] = '\0';
120 : PHP_MD5Init(&context);
121 : PHP_MD5Update(&context, arg, arg_len);
122 : PHP_MD5Final(digest, &context);
123 : if (raw_output) {
124 : RETURN_STRINGL(digest, 16, 1);
125 : } else {
126 : make_digest(md5str, digest);
127 : RETVAL_STRING(md5str, 1);
128 : }
129 :
130 : }
131 : /* }}} */
132 :
133 : /* {{{ proto string md5_file(string filename [, bool raw_output])
134 : Calculate the md5 hash of given filename */
135 : PHP_NAMED_FUNCTION(php_if_md5_file)
136 : {
137 : char *arg;
138 : int arg_len;
139 : zend_bool raw_output = 0;
140 : char md5str[33];
141 : unsigned char buf[1024];
142 : unsigned char digest[16];
143 : PHP_MD5_CTX context;
144 : int n;
145 : php_stream *stream;
146 :
147 : if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s|b", &arg, &arg_len, &raw_output) == FAILURE) {
148 : return;
149 : }
150 :
151 : stream = php_stream_open_wrapper(arg, "rb", REPORT_ERRORS | ENFORCE_SAFE_MODE, NULL);
152 : if (!stream) {
153 : RETURN_FALSE;
154 : }
155 :
156 : PHP_MD5Init(&context);
157 :
158 : while ((n = php_stream_read(stream, buf, sizeof(buf))) > 0) {
159 : PHP_MD5Update(&context, buf, n);
160 : }
161 :
162 : PHP_MD5Final(digest, &context);
163 :
164 : php_stream_close(stream);
165 :
166 : if (n<0) {
167 : RETURN_FALSE;
168 : }
169 :
170 : if (raw_output) {
171 : RETURN_STRINGL(digest, 16, 1);
172 : } else {
173 : make_digest(md5str, digest);
174 : RETVAL_STRING(md5str, 1);
175 : }
176 : }
177 : /* }}} */
178 :
179 : /*
180 : * The remaining code is the reference MD5 code (md5c.c) from rfc1321
181 : */
182 : /* MD5C.C - RSA Data Security, Inc., MD5 message-digest algorithm
183 : */
184 :
185 : /* Copyright (C) 1991-2, RSA Data Security, Inc. Created 1991. All
186 : rights reserved.
187 :
188 : License to copy and use this software is granted provided that it
189 : is identified as the "RSA Data Security, Inc. MD5 Message-Digest
190 : Algorithm" in all material mentioning or referencing this software
191 : or this function.
192 :
193 : License is also granted to make and use derivative works provided
194 : that such works are identified as "derived from the RSA Data
195 : Security, Inc. MD5 Message-Digest Algorithm" in all material
196 : mentioning or referencing the derived work.
197 :
198 : RSA Data Security, Inc. makes no representations concerning either
199 : the merchantability of this software or the suitability of this
200 : software for any particular purpose. It is provided "as is"
201 : without express or implied warranty of any kind.
202 :
203 : These notices must be retained in any copies of any part of this
204 : documentation and/or software.
205 : */
206 :
207 : /* Constants for MD5Transform routine.
208 : */
209 :
210 : #define S11 7
211 : #define S12 12
212 : #define S13 17
213 : #define S14 22
214 : #define S21 5
215 : #define S22 9
216 : #define S23 14
217 : #define S24 20
218 : #define S31 4
219 : #define S32 11
220 : #define S33 16
221 : #define S34 23
222 : #define S41 6
223 : #define S42 10
224 : #define S43 15
225 : #define S44 21
226 :
227 : static void MD5Transform(php_hash_uint32[4], const unsigned char[64]);
228 :
229 : /* F, G, H and I are basic MD5 functions.
230 : */
231 : #define F(x, y, z) (((x) & (y)) | ((~x) & (z)))
232 : #define G(x, y, z) (((x) & (z)) | ((y) & (~z)))
233 : #define H(x, y, z) ((x) ^ (y) ^ (z))
234 : #define I(x, y, z) ((y) ^ ((x) | (~z)))
235 :
236 : /* ROTATE_LEFT rotates x left n bits.
237 : */
238 : #define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n))))
239 :
240 : /* FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4.
241 : Rotation is separate from addition to prevent recomputation.
242 : */
243 : #define FF(a, b, c, d, x, s, ac) { \
244 : (a) += F ((b), (c), (d)) + (x) + (php_hash_uint32)(ac); \
245 : (a) = ROTATE_LEFT ((a), (s)); \
246 : (a) += (b); \
247 : }
248 : #define GG(a, b, c, d, x, s, ac) { \
249 : (a) += G ((b), (c), (d)) + (x) + (php_hash_uint32)(ac); \
250 : (a) = ROTATE_LEFT ((a), (s)); \
251 : (a) += (b); \
252 : }
253 : #define HH(a, b, c, d, x, s, ac) { \
254 : (a) += H ((b), (c), (d)) + (x) + (php_hash_uint32)(ac); \
255 : (a) = ROTATE_LEFT ((a), (s)); \
256 : (a) += (b); \
257 : }
258 : #define II(a, b, c, d, x, s, ac) { \
259 : (a) += I ((b), (c), (d)) + (x) + (php_hash_uint32)(ac); \
260 : (a) = ROTATE_LEFT ((a), (s)); \
261 : (a) += (b); \
262 : }
263 :
264 : /* {{{ PHP_MD5Init
265 : * MD5 initialization. Begins an MD5 operation, writing a new context.
266 : */
267 : PHP_HASH_API void PHP_MD5Init(PHP_MD5_CTX * context)
268 : {
269 : context->count[0] = context->count[1] = 0;
270 : /* Load magic initialization constants.
271 : */
272 : context->state[0] = 0x67452301;
273 : context->state[1] = 0xefcdab89;
274 : context->state[2] = 0x98badcfe;
275 : context->state[3] = 0x10325476;
276 : }
277 : /* }}} */
278 :
279 : /* {{{ PHP_MD5Update
280 : MD5 block update operation. Continues an MD5 message-digest
281 : operation, processing another message block, and updating the
282 : context.
283 : */
284 : PHP_HASH_API void PHP_MD5Update(PHP_MD5_CTX * context, const unsigned char *input,
285 : unsigned int inputLen)
286 : {
287 : unsigned int i, index, partLen;
288 :
289 : /* Compute number of bytes mod 64 */
290 : index = (unsigned int) ((context->count[0] >> 3) & 0x3F);
291 :
292 : /* Update number of bits */
293 : if ((context->count[0] += ((php_hash_uint32) inputLen << 3))
294 : < ((php_hash_uint32) inputLen << 3))
295 : context->count[1]++;
296 : context->count[1] += ((php_hash_uint32) inputLen >> 29);
297 :
298 : partLen = 64 - index;
299 :
300 : /* Transform as many times as possible.
301 : */
302 : if (inputLen >= partLen) {
303 : memcpy
304 : ((unsigned char*) & context->buffer[index], (unsigned char*) input, partLen);
305 : MD5Transform(context->state, context->buffer);
306 :
307 : for (i = partLen; i + 63 < inputLen; i += 64)
308 : MD5Transform(context->state, &input[i]);
309 :
310 : index = 0;
311 : } else
312 : i = 0;
313 :
314 : /* Buffer remaining input */
315 : memcpy
316 : ((unsigned char*) & context->buffer[index], (unsigned char*) & input[i],
317 : inputLen - i);
318 : }
319 : /* }}} */
320 :
321 : /* {{{ PHP_MD5Final
322 : MD5 finalization. Ends an MD5 message-digest operation, writing the
323 : the message digest and zeroizing the context.
324 : */
325 : PHP_HASH_API void PHP_MD5Final(unsigned char digest[16], PHP_MD5_CTX * context)
326 : {
327 : unsigned char bits[8];
328 : unsigned int index, padLen;
329 :
330 : /* Save number of bits */
331 : Encode(bits, context->count, 8);
332 :
333 : /* Pad out to 56 mod 64.
334 : */
335 : index = (unsigned int) ((context->count[0] >> 3) & 0x3f);
336 : padLen = (index < 56) ? (56 - index) : (120 - index);
337 : PHP_MD5Update(context, PADDING, padLen);
338 :
339 : /* Append length (before padding) */
340 : PHP_MD5Update(context, bits, 8);
341 :
342 : /* Store state in digest */
343 : Encode(digest, context->state, 16);
344 :
345 : /* Zeroize sensitive information.
346 : */
347 : memset((unsigned char*) context, 0, sizeof(*context));
348 : }
349 : /* }}} */
350 :
351 : /* {{{ MD5Transform
352 : * MD5 basic transformation. Transforms state based on block.
353 : */
354 : static void MD5Transform(state, block)
355 : php_hash_uint32 state[4];
356 : const unsigned char block[64];
357 : {
358 : php_hash_uint32 a = state[0], b = state[1], c = state[2], d = state[3], x[16];
359 :
360 : Decode(x, block, 64);
361 :
362 : /* Round 1 */
363 : FF(a, b, c, d, x[0], S11, 0xd76aa478); /* 1 */
364 : FF(d, a, b, c, x[1], S12, 0xe8c7b756); /* 2 */
365 : FF(c, d, a, b, x[2], S13, 0x242070db); /* 3 */
366 : FF(b, c, d, a, x[3], S14, 0xc1bdceee); /* 4 */
367 : FF(a, b, c, d, x[4], S11, 0xf57c0faf); /* 5 */
368 : FF(d, a, b, c, x[5], S12, 0x4787c62a); /* 6 */
369 : FF(c, d, a, b, x[6], S13, 0xa8304613); /* 7 */
370 : FF(b, c, d, a, x[7], S14, 0xfd469501); /* 8 */
371 : FF(a, b, c, d, x[8], S11, 0x698098d8); /* 9 */
372 : FF(d, a, b, c, x[9], S12, 0x8b44f7af); /* 10 */
373 : FF(c, d, a, b, x[10], S13, 0xffff5bb1); /* 11 */
374 : FF(b, c, d, a, x[11], S14, 0x895cd7be); /* 12 */
375 : FF(a, b, c, d, x[12], S11, 0x6b901122); /* 13 */
376 : FF(d, a, b, c, x[13], S12, 0xfd987193); /* 14 */
377 : FF(c, d, a, b, x[14], S13, 0xa679438e); /* 15 */
378 : FF(b, c, d, a, x[15], S14, 0x49b40821); /* 16 */
379 :
380 : /* Round 2 */
381 : GG(a, b, c, d, x[1], S21, 0xf61e2562); /* 17 */
382 : GG(d, a, b, c, x[6], S22, 0xc040b340); /* 18 */
383 : GG(c, d, a, b, x[11], S23, 0x265e5a51); /* 19 */
384 : GG(b, c, d, a, x[0], S24, 0xe9b6c7aa); /* 20 */
385 : GG(a, b, c, d, x[5], S21, 0xd62f105d); /* 21 */
386 : GG(d, a, b, c, x[10], S22, 0x2441453); /* 22 */
387 : GG(c, d, a, b, x[15], S23, 0xd8a1e681); /* 23 */
388 : GG(b, c, d, a, x[4], S24, 0xe7d3fbc8); /* 24 */
389 : GG(a, b, c, d, x[9], S21, 0x21e1cde6); /* 25 */
390 : GG(d, a, b, c, x[14], S22, 0xc33707d6); /* 26 */
391 : GG(c, d, a, b, x[3], S23, 0xf4d50d87); /* 27 */
392 : GG(b, c, d, a, x[8], S24, 0x455a14ed); /* 28 */
393 : GG(a, b, c, d, x[13], S21, 0xa9e3e905); /* 29 */
394 : GG(d, a, b, c, x[2], S22, 0xfcefa3f8); /* 30 */
395 : GG(c, d, a, b, x[7], S23, 0x676f02d9); /* 31 */
396 : GG(b, c, d, a, x[12], S24, 0x8d2a4c8a); /* 32 */
397 :
398 : /* Round 3 */
399 : HH(a, b, c, d, x[5], S31, 0xfffa3942); /* 33 */
400 : HH(d, a, b, c, x[8], S32, 0x8771f681); /* 34 */
401 : HH(c, d, a, b, x[11], S33, 0x6d9d6122); /* 35 */
402 : HH(b, c, d, a, x[14], S34, 0xfde5380c); /* 36 */
403 : HH(a, b, c, d, x[1], S31, 0xa4beea44); /* 37 */
404 : HH(d, a, b, c, x[4], S32, 0x4bdecfa9); /* 38 */
405 : HH(c, d, a, b, x[7], S33, 0xf6bb4b60); /* 39 */
406 : HH(b, c, d, a, x[10], S34, 0xbebfbc70); /* 40 */
407 : HH(a, b, c, d, x[13], S31, 0x289b7ec6); /* 41 */
408 : HH(d, a, b, c, x[0], S32, 0xeaa127fa); /* 42 */
409 : HH(c, d, a, b, x[3], S33, 0xd4ef3085); /* 43 */
410 : HH(b, c, d, a, x[6], S34, 0x4881d05); /* 44 */
411 : HH(a, b, c, d, x[9], S31, 0xd9d4d039); /* 45 */
412 : HH(d, a, b, c, x[12], S32, 0xe6db99e5); /* 46 */
413 : HH(c, d, a, b, x[15], S33, 0x1fa27cf8); /* 47 */
414 : HH(b, c, d, a, x[2], S34, 0xc4ac5665); /* 48 */
415 :
416 : /* Round 4 */
417 : II(a, b, c, d, x[0], S41, 0xf4292244); /* 49 */
418 : II(d, a, b, c, x[7], S42, 0x432aff97); /* 50 */
419 : II(c, d, a, b, x[14], S43, 0xab9423a7); /* 51 */
420 : II(b, c, d, a, x[5], S44, 0xfc93a039); /* 52 */
421 : II(a, b, c, d, x[12], S41, 0x655b59c3); /* 53 */
422 : II(d, a, b, c, x[3], S42, 0x8f0ccc92); /* 54 */
423 : II(c, d, a, b, x[10], S43, 0xffeff47d); /* 55 */
424 : II(b, c, d, a, x[1], S44, 0x85845dd1); /* 56 */
425 : II(a, b, c, d, x[8], S41, 0x6fa87e4f); /* 57 */
426 : II(d, a, b, c, x[15], S42, 0xfe2ce6e0); /* 58 */
427 : II(c, d, a, b, x[6], S43, 0xa3014314); /* 59 */
428 : II(b, c, d, a, x[13], S44, 0x4e0811a1); /* 60 */
429 : II(a, b, c, d, x[4], S41, 0xf7537e82); /* 61 */
430 : II(d, a, b, c, x[11], S42, 0xbd3af235); /* 62 */
431 : II(c, d, a, b, x[2], S43, 0x2ad7d2bb); /* 63 */
432 : II(b, c, d, a, x[9], S44, 0xeb86d391); /* 64 */
433 :
434 : state[0] += a;
435 : state[1] += b;
436 : state[2] += c;
437 : state[3] += d;
438 :
439 : /* Zeroize sensitive information. */
440 : memset((unsigned char*) x, 0, sizeof(x));
441 : }
442 : /* }}} */
443 :
444 : #endif /* PHP_HASH_MD5_NOT_IN_CORE */
445 :
446 : /* MD4 */
447 :
448 : #define MD4_F(x,y,z) ((z) ^ ((x) & ((y) ^ (z))))
449 : #define MD4_G(x,y,z) (((x) & ((y) | (z))) | ((y) & (z)))
450 : #define MD4_H(x,y,z) ((x) ^ (y) ^ (z))
451 :
452 : #define ROTL32(s,v) (((v) << (s)) | ((v) >> (32 - (s))))
453 :
454 : #define MD4_R1(a,b,c,d,k,s) a = ROTL32(s, a + MD4_F(b,c,d) + x[k])
455 : #define MD4_R2(a,b,c,d,k,s) a = ROTL32(s, a + MD4_G(b,c,d) + x[k] + 0x5A827999)
456 : #define MD4_R3(a,b,c,d,k,s) a = ROTL32(s, a + MD4_H(b,c,d) + x[k] + 0x6ED9EBA1)
457 :
458 : static void MD4Transform(php_hash_uint32 state[4], const unsigned char block[64])
459 26 : {
460 26 : php_hash_uint32 a = state[0], b = state[1], c = state[2], d = state[3], x[16];
461 :
462 26 : Decode(x, block, 64);
463 :
464 : /* Round 1 */
465 26 : MD4_R1(a,b,c,d, 0, 3);
466 26 : MD4_R1(d,a,b,c, 1, 7);
467 26 : MD4_R1(c,d,a,b, 2,11);
468 26 : MD4_R1(b,c,d,a, 3,19);
469 26 : MD4_R1(a,b,c,d, 4, 3);
470 26 : MD4_R1(d,a,b,c, 5, 7);
471 26 : MD4_R1(c,d,a,b, 6,11);
472 26 : MD4_R1(b,c,d,a, 7,19);
473 26 : MD4_R1(a,b,c,d, 8, 3);
474 26 : MD4_R1(d,a,b,c, 9, 7);
475 26 : MD4_R1(c,d,a,b,10,11);
476 26 : MD4_R1(b,c,d,a,11,19);
477 26 : MD4_R1(a,b,c,d,12, 3);
478 26 : MD4_R1(d,a,b,c,13, 7);
479 26 : MD4_R1(c,d,a,b,14,11);
480 26 : MD4_R1(b,c,d,a,15,19);
481 :
482 : /* Round 2 */
483 26 : MD4_R2(a,b,c,d, 0, 3);
484 26 : MD4_R2(d,a,b,c, 4, 5);
485 26 : MD4_R2(c,d,a,b, 8, 9);
486 26 : MD4_R2(b,c,d,a,12,13);
487 26 : MD4_R2(a,b,c,d, 1, 3);
488 26 : MD4_R2(d,a,b,c, 5, 5);
489 26 : MD4_R2(c,d,a,b, 9, 9);
490 26 : MD4_R2(b,c,d,a,13,13);
491 26 : MD4_R2(a,b,c,d, 2, 3);
492 26 : MD4_R2(d,a,b,c, 6, 5);
493 26 : MD4_R2(c,d,a,b,10, 9);
494 26 : MD4_R2(b,c,d,a,14,13);
495 26 : MD4_R2(a,b,c,d, 3, 3);
496 26 : MD4_R2(d,a,b,c, 7, 5);
497 26 : MD4_R2(c,d,a,b,11, 9);
498 26 : MD4_R2(b,c,d,a,15,13);
499 :
500 : /* Round 3 */
501 26 : MD4_R3(a,b,c,d, 0, 3);
502 26 : MD4_R3(d,a,b,c, 8, 9);
503 26 : MD4_R3(c,d,a,b, 4,11);
504 26 : MD4_R3(b,c,d,a,12,15);
505 26 : MD4_R3(a,b,c,d, 2, 3);
506 26 : MD4_R3(d,a,b,c,10, 9);
507 26 : MD4_R3(c,d,a,b, 6,11);
508 26 : MD4_R3(b,c,d,a,14,15);
509 26 : MD4_R3(a,b,c,d, 1, 3);
510 26 : MD4_R3(d,a,b,c, 9, 9);
511 26 : MD4_R3(c,d,a,b, 5,11);
512 26 : MD4_R3(b,c,d,a,13,15);
513 26 : MD4_R3(a,b,c,d, 3, 3);
514 26 : MD4_R3(d,a,b,c,11, 9);
515 26 : MD4_R3(c,d,a,b, 7,11);
516 26 : MD4_R3(b,c,d,a,15,15);
517 :
518 26 : state[0] += a;
519 26 : state[1] += b;
520 26 : state[2] += c;
521 26 : state[3] += d;
522 26 : }
523 :
524 : /* {{{ PHP_MD4Init
525 : * MD4 initialization. Begins an MD4 operation, writing a new context.
526 : */
527 : PHP_HASH_API void PHP_MD4Init(PHP_MD4_CTX * context)
528 16 : {
529 16 : context->count[0] = context->count[1] = 0;
530 : /* Load magic initialization constants.
531 : */
532 16 : context->state[0] = 0x67452301;
533 16 : context->state[1] = 0xefcdab89;
534 16 : context->state[2] = 0x98badcfe;
535 16 : context->state[3] = 0x10325476;
536 16 : }
537 : /* }}} */
538 :
539 : /* {{{ PHP_MD4Update
540 : MD4 block update operation. Continues an MD4 message-digest
541 : operation, processing another message block, and updating the
542 : context.
543 : */
544 : PHP_HASH_API void PHP_MD4Update(PHP_MD4_CTX * context, const unsigned char *input, unsigned int inputLen)
545 51 : {
546 : unsigned int i, index, partLen;
547 :
548 : /* Compute number of bytes mod 64 */
549 51 : index = (unsigned int) ((context->count[0] >> 3) & 0x3F);
550 :
551 : /* Update number of bits */
552 51 : if ((context->count[0] += ((php_hash_uint32) inputLen << 3))
553 : < ((php_hash_uint32) inputLen << 3))
554 0 : context->count[1]++;
555 51 : context->count[1] += ((php_hash_uint32) inputLen >> 29);
556 :
557 51 : partLen = 64 - index;
558 :
559 : /* Transform as many times as possible.
560 : */
561 51 : if (inputLen >= partLen) {
562 26 : memcpy((unsigned char*) & context->buffer[index], (unsigned char*) input, partLen);
563 26 : MD4Transform(context->state, context->buffer);
564 :
565 26 : for (i = partLen; i + 63 < inputLen; i += 64) {
566 0 : MD4Transform(context->state, &input[i]);
567 : }
568 :
569 26 : index = 0;
570 : } else {
571 25 : i = 0;
572 : }
573 :
574 : /* Buffer remaining input */
575 51 : memcpy((unsigned char*) & context->buffer[index], (unsigned char*) & input[i], inputLen - i);
576 51 : }
577 : /* }}} */
578 :
579 : /* {{{ PHP_MD4Final
580 : MD4 finalization. Ends an MD4 message-digest operation, writing the
581 : the message digest and zeroizing the context.
582 : */
583 : PHP_HASH_API void PHP_MD4Final(unsigned char digest[16], PHP_MD4_CTX * context)
584 16 : {
585 : unsigned char bits[8];
586 : unsigned int index, padLen;
587 :
588 : /* Save number of bits */
589 16 : Encode(bits, context->count, 8);
590 :
591 : /* Pad out to 56 mod 64.
592 : */
593 16 : index = (unsigned int) ((context->count[0] >> 3) & 0x3f);
594 16 : padLen = (index < 56) ? (56 - index) : (120 - index);
595 16 : PHP_MD4Update(context, PADDING, padLen);
596 :
597 : /* Append length (before padding) */
598 16 : PHP_MD4Update(context, bits, 8);
599 :
600 : /* Store state in digest */
601 16 : Encode(digest, context->state, 16);
602 :
603 : /* Zeroize sensitive information.
604 : */
605 16 : memset((unsigned char*) context, 0, sizeof(*context));
606 16 : }
607 : /* }}} */
608 :
609 : /* MD2 */
610 :
611 : static const unsigned char MD2_S[256] = {
612 : 41, 46, 67, 201, 162, 216, 124, 1, 61, 54, 84, 161, 236, 240, 6, 19,
613 : 98, 167, 5, 243, 192, 199, 115, 140, 152, 147, 43, 217, 188, 76, 130, 202,
614 : 30, 155, 87, 60, 253, 212, 224, 22, 103, 66, 111, 24, 138, 23, 229, 18,
615 : 190, 78, 196, 214, 218, 158, 222, 73, 160, 251, 245, 142, 187, 47, 238, 122,
616 : 169, 104, 121, 145, 21, 178, 7, 63, 148, 194, 16, 137, 11, 34, 95, 33,
617 : 128, 127, 93, 154, 90, 144, 50, 39, 53, 62, 204, 231, 191, 247, 151, 3,
618 : 255, 25, 48, 179, 72, 165, 181, 209, 215, 94, 146, 42, 172, 86, 170, 198,
619 : 79, 184, 56, 210, 150, 164, 125, 182, 118, 252, 107, 226, 156, 116, 4, 241,
620 : 69, 157, 112, 89, 100, 113, 135, 32, 134, 91, 207, 101, 230, 45, 168, 2,
621 : 27, 96, 37, 173, 174, 176, 185, 246, 28, 70, 97, 105, 52, 64, 126, 15,
622 : 85, 71, 163, 35, 221, 81, 175, 58, 195, 92, 249, 206, 186, 197, 234, 38,
623 : 44, 83, 13, 110, 133, 40, 132, 9, 211, 223, 205, 244, 65, 129, 77, 82,
624 : 106, 220, 55, 200, 108, 193, 171, 250, 36, 225, 123, 8, 12, 189, 177, 74,
625 : 120, 136, 149, 139, 227, 99, 232, 109, 233, 203, 213, 254, 59, 0, 29, 57,
626 : 242, 239, 183, 14, 102, 88, 208, 228, 166, 119, 114, 248, 235, 117, 75, 10,
627 : 49, 68, 80, 180, 143, 237, 31, 26, 219, 153, 141, 51, 159, 17, 131, 20 };
628 :
629 : PHP_HASH_API void PHP_MD2Init(PHP_MD2_CTX *context)
630 16 : {
631 16 : memset(context, 0, sizeof(PHP_MD2_CTX));
632 16 : }
633 :
634 : static void MD2_Transform(PHP_MD2_CTX *context, const unsigned char *block)
635 67 : {
636 67 : unsigned char i,j,t = 0;
637 :
638 1139 : for(i = 0; i < 16; i++) {
639 1072 : context->state[16+i] = block[i];
640 1072 : context->state[32+i] = (context->state[16+i] ^ context->state[i]);
641 : }
642 :
643 1273 : for(i = 0; i < 18; i++) {
644 59094 : for(j = 0; j < 48; j++) {
645 57888 : t = context->state[j] = context->state[j] ^ MD2_S[t];
646 : }
647 1206 : t += i;
648 : }
649 :
650 : /* Update checksum -- must be after transform to avoid fouling up last message block */
651 67 : t = context->checksum[15];
652 1139 : for(i = 0; i < 16; i++) {
653 1072 : t = context->checksum[i] ^= MD2_S[block[i] ^ t];
654 : }
655 67 : }
656 :
657 : PHP_HASH_API void PHP_MD2Update(PHP_MD2_CTX *context, const unsigned char *buf, unsigned int len)
658 19 : {
659 19 : const unsigned char *p = buf, *e = buf + len;
660 :
661 19 : if (context->in_buffer) {
662 1 : if (context->in_buffer + len < 16) {
663 : /* Not enough for block, just pass into buffer */
664 0 : memcpy(context->buffer + context->in_buffer, p, len);
665 0 : context->in_buffer += len;
666 0 : return;
667 : }
668 : /* Put buffered data together with inbound for a single block */
669 1 : memcpy(context->buffer + context->in_buffer, p, 16 - context->in_buffer);
670 1 : MD2_Transform(context, context->buffer);
671 1 : p += 16 - context->in_buffer;
672 1 : context->in_buffer = 0;
673 : }
674 :
675 : /* Process as many whole blocks as remain */
676 72 : while ((p + 16) <= e) {
677 34 : MD2_Transform(context, p);
678 34 : p += 16;
679 : }
680 :
681 : /* Copy remaining data to buffer */
682 19 : if (p < e) {
683 10 : memcpy(context->buffer, p, e - p);
684 10 : context->in_buffer = e - p;
685 : }
686 : }
687 :
688 : PHP_HASH_API void PHP_MD2Final(unsigned char output[16], PHP_MD2_CTX *context)
689 16 : {
690 16 : memset(context->buffer + context->in_buffer, 16 - context->in_buffer, 16 - context->in_buffer);
691 16 : MD2_Transform(context, context->buffer);
692 16 : MD2_Transform(context, context->checksum);
693 :
694 16 : memcpy(output, context->state, 16);
695 16 : }
696 :
697 : /*
698 : * Local variables:
699 : * tab-width: 4
700 : * c-basic-offset: 4
701 : * End:
702 : * vim600: sw=4 ts=4 fdm=marker
703 : * vim<600: sw=4 ts=4
704 : */
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