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Side by Side Diff: nss/lib/freebl/md5.c

Issue 2078763002: Delete bundled copy of NSS and replace with README. (Closed) Base URL: https://chromium.googlesource.com/chromium/deps/nss@master
Patch Set: Delete bundled copy of NSS and replace with README. Created 4 years, 6 months ago
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1 /* This Source Code Form is subject to the terms of the Mozilla Public
2 * License, v. 2.0. If a copy of the MPL was not distributed with this
3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
4
5 #ifdef FREEBL_NO_DEPEND
6 #include "stubs.h"
7 #endif
8
9 #include "prerr.h"
10 #include "secerr.h"
11
12 #include "prtypes.h"
13 #include "prlong.h"
14
15 #include "blapi.h"
16
17 #define MD5_HASH_LEN 16
18 #define MD5_BUFFER_SIZE 64
19 #define MD5_END_BUFFER (MD5_BUFFER_SIZE - 8)
20
21 #define CV0_1 0x67452301
22 #define CV0_2 0xefcdab89
23 #define CV0_3 0x98badcfe
24 #define CV0_4 0x10325476
25
26 #define T1_0 0xd76aa478
27 #define T1_1 0xe8c7b756
28 #define T1_2 0x242070db
29 #define T1_3 0xc1bdceee
30 #define T1_4 0xf57c0faf
31 #define T1_5 0x4787c62a
32 #define T1_6 0xa8304613
33 #define T1_7 0xfd469501
34 #define T1_8 0x698098d8
35 #define T1_9 0x8b44f7af
36 #define T1_10 0xffff5bb1
37 #define T1_11 0x895cd7be
38 #define T1_12 0x6b901122
39 #define T1_13 0xfd987193
40 #define T1_14 0xa679438e
41 #define T1_15 0x49b40821
42
43 #define T2_0 0xf61e2562
44 #define T2_1 0xc040b340
45 #define T2_2 0x265e5a51
46 #define T2_3 0xe9b6c7aa
47 #define T2_4 0xd62f105d
48 #define T2_5 0x02441453
49 #define T2_6 0xd8a1e681
50 #define T2_7 0xe7d3fbc8
51 #define T2_8 0x21e1cde6
52 #define T2_9 0xc33707d6
53 #define T2_10 0xf4d50d87
54 #define T2_11 0x455a14ed
55 #define T2_12 0xa9e3e905
56 #define T2_13 0xfcefa3f8
57 #define T2_14 0x676f02d9
58 #define T2_15 0x8d2a4c8a
59
60 #define T3_0 0xfffa3942
61 #define T3_1 0x8771f681
62 #define T3_2 0x6d9d6122
63 #define T3_3 0xfde5380c
64 #define T3_4 0xa4beea44
65 #define T3_5 0x4bdecfa9
66 #define T3_6 0xf6bb4b60
67 #define T3_7 0xbebfbc70
68 #define T3_8 0x289b7ec6
69 #define T3_9 0xeaa127fa
70 #define T3_10 0xd4ef3085
71 #define T3_11 0x04881d05
72 #define T3_12 0xd9d4d039
73 #define T3_13 0xe6db99e5
74 #define T3_14 0x1fa27cf8
75 #define T3_15 0xc4ac5665
76
77 #define T4_0 0xf4292244
78 #define T4_1 0x432aff97
79 #define T4_2 0xab9423a7
80 #define T4_3 0xfc93a039
81 #define T4_4 0x655b59c3
82 #define T4_5 0x8f0ccc92
83 #define T4_6 0xffeff47d
84 #define T4_7 0x85845dd1
85 #define T4_8 0x6fa87e4f
86 #define T4_9 0xfe2ce6e0
87 #define T4_10 0xa3014314
88 #define T4_11 0x4e0811a1
89 #define T4_12 0xf7537e82
90 #define T4_13 0xbd3af235
91 #define T4_14 0x2ad7d2bb
92 #define T4_15 0xeb86d391
93
94 #define R1B0 0
95 #define R1B1 1
96 #define R1B2 2
97 #define R1B3 3
98 #define R1B4 4
99 #define R1B5 5
100 #define R1B6 6
101 #define R1B7 7
102 #define R1B8 8
103 #define R1B9 9
104 #define R1B10 10
105 #define R1B11 11
106 #define R1B12 12
107 #define R1B13 13
108 #define R1B14 14
109 #define R1B15 15
110
111 #define R2B0 1
112 #define R2B1 6
113 #define R2B2 11
114 #define R2B3 0
115 #define R2B4 5
116 #define R2B5 10
117 #define R2B6 15
118 #define R2B7 4
119 #define R2B8 9
120 #define R2B9 14
121 #define R2B10 3
122 #define R2B11 8
123 #define R2B12 13
124 #define R2B13 2
125 #define R2B14 7
126 #define R2B15 12
127
128 #define R3B0 5
129 #define R3B1 8
130 #define R3B2 11
131 #define R3B3 14
132 #define R3B4 1
133 #define R3B5 4
134 #define R3B6 7
135 #define R3B7 10
136 #define R3B8 13
137 #define R3B9 0
138 #define R3B10 3
139 #define R3B11 6
140 #define R3B12 9
141 #define R3B13 12
142 #define R3B14 15
143 #define R3B15 2
144
145 #define R4B0 0
146 #define R4B1 7
147 #define R4B2 14
148 #define R4B3 5
149 #define R4B4 12
150 #define R4B5 3
151 #define R4B6 10
152 #define R4B7 1
153 #define R4B8 8
154 #define R4B9 15
155 #define R4B10 6
156 #define R4B11 13
157 #define R4B12 4
158 #define R4B13 11
159 #define R4B14 2
160 #define R4B15 9
161
162 #define S1_0 7
163 #define S1_1 12
164 #define S1_2 17
165 #define S1_3 22
166
167 #define S2_0 5
168 #define S2_1 9
169 #define S2_2 14
170 #define S2_3 20
171
172 #define S3_0 4
173 #define S3_1 11
174 #define S3_2 16
175 #define S3_3 23
176
177 #define S4_0 6
178 #define S4_1 10
179 #define S4_2 15
180 #define S4_3 21
181
182 struct MD5ContextStr {
183 PRUint32 lsbInput;
184 PRUint32 msbInput;
185 PRUint32 cv[4];
186 union {
187 PRUint8 b[64];
188 PRUint32 w[16];
189 } u;
190 };
191
192 #define inBuf u.b
193
194 SECStatus
195 MD5_Hash(unsigned char *dest, const char *src)
196 {
197 return MD5_HashBuf(dest, (const unsigned char *)src, PORT_Strlen(src));
198 }
199
200 SECStatus
201 MD5_HashBuf(unsigned char *dest, const unsigned char *src, PRUint32 src_length)
202 {
203 unsigned int len;
204 MD5Context cx;
205
206 MD5_Begin(&cx);
207 MD5_Update(&cx, src, src_length);
208 MD5_End(&cx, dest, &len, MD5_HASH_LEN);
209 memset(&cx, 0, sizeof cx);
210 return SECSuccess;
211 }
212
213 MD5Context *
214 MD5_NewContext(void)
215 {
216 /* no need to ZAlloc, MD5_Begin will init the context */
217 MD5Context *cx = (MD5Context *)PORT_Alloc(sizeof(MD5Context));
218 if (cx == NULL) {
219 PORT_SetError(PR_OUT_OF_MEMORY_ERROR);
220 return NULL;
221 }
222 return cx;
223 }
224
225 void
226 MD5_DestroyContext(MD5Context *cx, PRBool freeit)
227 {
228 memset(cx, 0, sizeof *cx);
229 if (freeit) {
230 PORT_Free(cx);
231 }
232 }
233
234 void
235 MD5_Begin(MD5Context *cx)
236 {
237 cx->lsbInput = 0;
238 cx->msbInput = 0;
239 /* memset(cx->inBuf, 0, sizeof(cx->inBuf)); */
240 cx->cv[0] = CV0_1;
241 cx->cv[1] = CV0_2;
242 cx->cv[2] = CV0_3;
243 cx->cv[3] = CV0_4;
244 }
245
246 #define cls(i32, s) (tmp = i32, tmp << s | tmp >> (32 - s))
247
248 #if defined(SOLARIS) || defined(HPUX)
249 #define addto64(sumhigh, sumlow, addend) \
250 sumlow += addend; sumhigh += (sumlow < addend);
251 #else
252 #define addto64(sumhigh, sumlow, addend) \
253 sumlow += addend; if (sumlow < addend) ++sumhigh;
254 #endif
255
256 #define MASK 0x00ff00ff
257 #ifdef IS_LITTLE_ENDIAN
258 #define lendian(i32) \
259 (i32)
260 #else
261 #define lendian(i32) \
262 (tmp = (i32 >> 16) | (i32 << 16), ((tmp & MASK) << 8) | ((tmp >> 8) & MA SK))
263 #endif
264
265 #ifndef IS_LITTLE_ENDIAN
266
267 #define lebytes(b4) \
268 ((b4)[3] << 24 | (b4)[2] << 16 | (b4)[1] << 8 | (b4)[0])
269
270 static void
271 md5_prep_state_le(MD5Context *cx)
272 {
273 PRUint32 tmp;
274 cx->u.w[0] = lendian(cx->u.w[0]);
275 cx->u.w[1] = lendian(cx->u.w[1]);
276 cx->u.w[2] = lendian(cx->u.w[2]);
277 cx->u.w[3] = lendian(cx->u.w[3]);
278 cx->u.w[4] = lendian(cx->u.w[4]);
279 cx->u.w[5] = lendian(cx->u.w[5]);
280 cx->u.w[6] = lendian(cx->u.w[6]);
281 cx->u.w[7] = lendian(cx->u.w[7]);
282 cx->u.w[8] = lendian(cx->u.w[8]);
283 cx->u.w[9] = lendian(cx->u.w[9]);
284 cx->u.w[10] = lendian(cx->u.w[10]);
285 cx->u.w[11] = lendian(cx->u.w[11]);
286 cx->u.w[12] = lendian(cx->u.w[12]);
287 cx->u.w[13] = lendian(cx->u.w[13]);
288 cx->u.w[14] = lendian(cx->u.w[14]);
289 cx->u.w[15] = lendian(cx->u.w[15]);
290 }
291
292 static void
293 md5_prep_buffer_le(MD5Context *cx, const PRUint8 *beBuf)
294 {
295 cx->u.w[0] = lebytes(&beBuf[0]);
296 cx->u.w[1] = lebytes(&beBuf[4]);
297 cx->u.w[2] = lebytes(&beBuf[8]);
298 cx->u.w[3] = lebytes(&beBuf[12]);
299 cx->u.w[4] = lebytes(&beBuf[16]);
300 cx->u.w[5] = lebytes(&beBuf[20]);
301 cx->u.w[6] = lebytes(&beBuf[24]);
302 cx->u.w[7] = lebytes(&beBuf[28]);
303 cx->u.w[8] = lebytes(&beBuf[32]);
304 cx->u.w[9] = lebytes(&beBuf[36]);
305 cx->u.w[10] = lebytes(&beBuf[40]);
306 cx->u.w[11] = lebytes(&beBuf[44]);
307 cx->u.w[12] = lebytes(&beBuf[48]);
308 cx->u.w[13] = lebytes(&beBuf[52]);
309 cx->u.w[14] = lebytes(&beBuf[56]);
310 cx->u.w[15] = lebytes(&beBuf[60]);
311 }
312 #endif
313
314
315 #define F(X, Y, Z) \
316 ((X & Y) | ((~X) & Z))
317
318 #define G(X, Y, Z) \
319 ((X & Z) | (Y & (~Z)))
320
321 #define H(X, Y, Z) \
322 (X ^ Y ^ Z)
323
324 #define I(X, Y, Z) \
325 (Y ^ (X | (~Z)))
326
327 #define FF(a, b, c, d, bufint, s, ti) \
328 a = b + cls(a + F(b, c, d) + bufint + ti, s)
329
330 #define GG(a, b, c, d, bufint, s, ti) \
331 a = b + cls(a + G(b, c, d) + bufint + ti, s)
332
333 #define HH(a, b, c, d, bufint, s, ti) \
334 a = b + cls(a + H(b, c, d) + bufint + ti, s)
335
336 #define II(a, b, c, d, bufint, s, ti) \
337 a = b + cls(a + I(b, c, d) + bufint + ti, s)
338
339 static void
340 md5_compress(MD5Context *cx, const PRUint32 *wBuf)
341 {
342 PRUint32 a, b, c, d;
343 PRUint32 tmp;
344 a = cx->cv[0];
345 b = cx->cv[1];
346 c = cx->cv[2];
347 d = cx->cv[3];
348 FF(a, b, c, d, wBuf[R1B0 ], S1_0, T1_0);
349 FF(d, a, b, c, wBuf[R1B1 ], S1_1, T1_1);
350 FF(c, d, a, b, wBuf[R1B2 ], S1_2, T1_2);
351 FF(b, c, d, a, wBuf[R1B3 ], S1_3, T1_3);
352 FF(a, b, c, d, wBuf[R1B4 ], S1_0, T1_4);
353 FF(d, a, b, c, wBuf[R1B5 ], S1_1, T1_5);
354 FF(c, d, a, b, wBuf[R1B6 ], S1_2, T1_6);
355 FF(b, c, d, a, wBuf[R1B7 ], S1_3, T1_7);
356 FF(a, b, c, d, wBuf[R1B8 ], S1_0, T1_8);
357 FF(d, a, b, c, wBuf[R1B9 ], S1_1, T1_9);
358 FF(c, d, a, b, wBuf[R1B10], S1_2, T1_10);
359 FF(b, c, d, a, wBuf[R1B11], S1_3, T1_11);
360 FF(a, b, c, d, wBuf[R1B12], S1_0, T1_12);
361 FF(d, a, b, c, wBuf[R1B13], S1_1, T1_13);
362 FF(c, d, a, b, wBuf[R1B14], S1_2, T1_14);
363 FF(b, c, d, a, wBuf[R1B15], S1_3, T1_15);
364 GG(a, b, c, d, wBuf[R2B0 ], S2_0, T2_0);
365 GG(d, a, b, c, wBuf[R2B1 ], S2_1, T2_1);
366 GG(c, d, a, b, wBuf[R2B2 ], S2_2, T2_2);
367 GG(b, c, d, a, wBuf[R2B3 ], S2_3, T2_3);
368 GG(a, b, c, d, wBuf[R2B4 ], S2_0, T2_4);
369 GG(d, a, b, c, wBuf[R2B5 ], S2_1, T2_5);
370 GG(c, d, a, b, wBuf[R2B6 ], S2_2, T2_6);
371 GG(b, c, d, a, wBuf[R2B7 ], S2_3, T2_7);
372 GG(a, b, c, d, wBuf[R2B8 ], S2_0, T2_8);
373 GG(d, a, b, c, wBuf[R2B9 ], S2_1, T2_9);
374 GG(c, d, a, b, wBuf[R2B10], S2_2, T2_10);
375 GG(b, c, d, a, wBuf[R2B11], S2_3, T2_11);
376 GG(a, b, c, d, wBuf[R2B12], S2_0, T2_12);
377 GG(d, a, b, c, wBuf[R2B13], S2_1, T2_13);
378 GG(c, d, a, b, wBuf[R2B14], S2_2, T2_14);
379 GG(b, c, d, a, wBuf[R2B15], S2_3, T2_15);
380 HH(a, b, c, d, wBuf[R3B0 ], S3_0, T3_0);
381 HH(d, a, b, c, wBuf[R3B1 ], S3_1, T3_1);
382 HH(c, d, a, b, wBuf[R3B2 ], S3_2, T3_2);
383 HH(b, c, d, a, wBuf[R3B3 ], S3_3, T3_3);
384 HH(a, b, c, d, wBuf[R3B4 ], S3_0, T3_4);
385 HH(d, a, b, c, wBuf[R3B5 ], S3_1, T3_5);
386 HH(c, d, a, b, wBuf[R3B6 ], S3_2, T3_6);
387 HH(b, c, d, a, wBuf[R3B7 ], S3_3, T3_7);
388 HH(a, b, c, d, wBuf[R3B8 ], S3_0, T3_8);
389 HH(d, a, b, c, wBuf[R3B9 ], S3_1, T3_9);
390 HH(c, d, a, b, wBuf[R3B10], S3_2, T3_10);
391 HH(b, c, d, a, wBuf[R3B11], S3_3, T3_11);
392 HH(a, b, c, d, wBuf[R3B12], S3_0, T3_12);
393 HH(d, a, b, c, wBuf[R3B13], S3_1, T3_13);
394 HH(c, d, a, b, wBuf[R3B14], S3_2, T3_14);
395 HH(b, c, d, a, wBuf[R3B15], S3_3, T3_15);
396 II(a, b, c, d, wBuf[R4B0 ], S4_0, T4_0);
397 II(d, a, b, c, wBuf[R4B1 ], S4_1, T4_1);
398 II(c, d, a, b, wBuf[R4B2 ], S4_2, T4_2);
399 II(b, c, d, a, wBuf[R4B3 ], S4_3, T4_3);
400 II(a, b, c, d, wBuf[R4B4 ], S4_0, T4_4);
401 II(d, a, b, c, wBuf[R4B5 ], S4_1, T4_5);
402 II(c, d, a, b, wBuf[R4B6 ], S4_2, T4_6);
403 II(b, c, d, a, wBuf[R4B7 ], S4_3, T4_7);
404 II(a, b, c, d, wBuf[R4B8 ], S4_0, T4_8);
405 II(d, a, b, c, wBuf[R4B9 ], S4_1, T4_9);
406 II(c, d, a, b, wBuf[R4B10], S4_2, T4_10);
407 II(b, c, d, a, wBuf[R4B11], S4_3, T4_11);
408 II(a, b, c, d, wBuf[R4B12], S4_0, T4_12);
409 II(d, a, b, c, wBuf[R4B13], S4_1, T4_13);
410 II(c, d, a, b, wBuf[R4B14], S4_2, T4_14);
411 II(b, c, d, a, wBuf[R4B15], S4_3, T4_15);
412 cx->cv[0] += a;
413 cx->cv[1] += b;
414 cx->cv[2] += c;
415 cx->cv[3] += d;
416 }
417
418 void
419 MD5_Update(MD5Context *cx, const unsigned char *input, unsigned int inputLen)
420 {
421 PRUint32 bytesToConsume;
422 PRUint32 inBufIndex = cx->lsbInput & 63;
423 const PRUint32 *wBuf;
424
425 /* Add the number of input bytes to the 64-bit input counter. */
426 addto64(cx->msbInput, cx->lsbInput, inputLen);
427 if (inBufIndex) {
428 /* There is already data in the buffer. Fill with input. */
429 bytesToConsume = PR_MIN(inputLen, MD5_BUFFER_SIZE - inBufIndex);
430 memcpy(&cx->inBuf[inBufIndex], input, bytesToConsume);
431 if (inBufIndex + bytesToConsume >= MD5_BUFFER_SIZE) {
432 /* The buffer is filled. Run the compression function. */
433 #ifndef IS_LITTLE_ENDIAN
434 md5_prep_state_le(cx);
435 #endif
436 md5_compress(cx, cx->u.w);
437 }
438 /* Remaining input. */
439 inputLen -= bytesToConsume;
440 input += bytesToConsume;
441 }
442
443 /* Iterate over 64-byte chunks of the message. */
444 while (inputLen >= MD5_BUFFER_SIZE) {
445 #ifdef IS_LITTLE_ENDIAN
446 #ifdef NSS_X86_OR_X64
447 /* x86 can handle arithmetic on non-word-aligned buffers */
448 wBuf = (PRUint32 *)input;
449 #else
450 if ((ptrdiff_t)input & 0x3) {
451 /* buffer not aligned, copy it to force alignment */
452 memcpy(cx->inBuf, input, MD5_BUFFER_SIZE);
453 wBuf = cx->u.w;
454 } else {
455 /* buffer is aligned */
456 wBuf = (PRUint32 *)input;
457 }
458 #endif
459 #else
460 md5_prep_buffer_le(cx, input);
461 wBuf = cx->u.w;
462 #endif
463 md5_compress(cx, wBuf);
464 inputLen -= MD5_BUFFER_SIZE;
465 input += MD5_BUFFER_SIZE;
466 }
467
468 /* Tail of message (message bytes mod 64). */
469 if (inputLen)
470 memcpy(cx->inBuf, input, inputLen);
471 }
472
473 static const unsigned char padbytes[] = {
474 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
475 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
476 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
477 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
478 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
479 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
480 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
481 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
482 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
483 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
484 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
485 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
486 };
487
488 void
489 MD5_End(MD5Context *cx, unsigned char *digest,
490 unsigned int *digestLen, unsigned int maxDigestLen)
491 {
492 #ifndef IS_LITTLE_ENDIAN
493 PRUint32 tmp;
494 #endif
495 PRUint32 lowInput, highInput;
496 PRUint32 inBufIndex = cx->lsbInput & 63;
497
498 if (maxDigestLen < MD5_HASH_LEN) {
499 PORT_SetError(SEC_ERROR_INVALID_ARGS);
500 return;
501 }
502
503 /* Copy out the length of bits input before padding. */
504 lowInput = cx->lsbInput;
505 highInput = (cx->msbInput << 3) | (lowInput >> 29);
506 lowInput <<= 3;
507
508 if (inBufIndex < MD5_END_BUFFER) {
509 MD5_Update(cx, padbytes, MD5_END_BUFFER - inBufIndex);
510 } else {
511 MD5_Update(cx, padbytes,
512 MD5_END_BUFFER + MD5_BUFFER_SIZE - inBufIndex);
513 }
514
515 /* Store the number of bytes input (before padding) in final 64 bits. */
516 cx->u.w[14] = lendian(lowInput);
517 cx->u.w[15] = lendian(highInput);
518
519 /* Final call to compress. */
520 #ifndef IS_LITTLE_ENDIAN
521 md5_prep_state_le(cx);
522 #endif
523 md5_compress(cx, cx->u.w);
524
525 /* Copy the resulting values out of the chain variables into return buf. */
526 if (digestLen)
527 *digestLen = MD5_HASH_LEN;
528 #ifndef IS_LITTLE_ENDIAN
529 cx->cv[0] = lendian(cx->cv[0]);
530 cx->cv[1] = lendian(cx->cv[1]);
531 cx->cv[2] = lendian(cx->cv[2]);
532 cx->cv[3] = lendian(cx->cv[3]);
533 #endif
534 memcpy(digest, cx->cv, MD5_HASH_LEN);
535 }
536
537 void
538 MD5_EndRaw(MD5Context *cx, unsigned char *digest,
539 unsigned int *digestLen, unsigned int maxDigestLen)
540 {
541 #ifndef IS_LITTLE_ENDIAN
542 PRUint32 tmp;
543 #endif
544 PRUint32 cv[4];
545
546 if (maxDigestLen < MD5_HASH_LEN) {
547 PORT_SetError(SEC_ERROR_INVALID_ARGS);
548 return;
549 }
550
551 memcpy(cv, cx->cv, sizeof(cv));
552 #ifndef IS_LITTLE_ENDIAN
553 cv[0] = lendian(cv[0]);
554 cv[1] = lendian(cv[1]);
555 cv[2] = lendian(cv[2]);
556 cv[3] = lendian(cv[3]);
557 #endif
558 memcpy(digest, cv, MD5_HASH_LEN);
559 if (digestLen)
560 *digestLen = MD5_HASH_LEN;
561 }
562
563 unsigned int
564 MD5_FlattenSize(MD5Context *cx)
565 {
566 return sizeof(*cx);
567 }
568
569 SECStatus
570 MD5_Flatten(MD5Context *cx, unsigned char *space)
571 {
572 memcpy(space, cx, sizeof(*cx));
573 return SECSuccess;
574 }
575
576 MD5Context *
577 MD5_Resurrect(unsigned char *space, void *arg)
578 {
579 MD5Context *cx = MD5_NewContext();
580 if (cx)
581 memcpy(cx, space, sizeof(*cx));
582 return cx;
583 }
584
585 void MD5_Clone(MD5Context *dest, MD5Context *src)
586 {
587 memcpy(dest, src, sizeof *dest);
588 }
589
590 void
591 MD5_TraceState(MD5Context *cx)
592 {
593 PORT_SetError(PR_NOT_IMPLEMENTED_ERROR);
594 }
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