source: azure_iot_hub_riscv/trunk/wolfssl-4.4.0/wolfcrypt/src/md5.c@ 453

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1/* md5.c
2 *
3 * Copyright (C) 2006-2020 wolfSSL Inc.
4 *
5 * This file is part of wolfSSL.
6 *
7 * wolfSSL is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * wolfSSL is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
20 */
21
22
23
24#ifdef HAVE_CONFIG_H
25#include <config.h>
26#endif
27
28#include <wolfssl/wolfcrypt/settings.h>
29
30#if !defined(NO_MD5)
31
32#if defined(WOLFSSL_TI_HASH)
33/* #include <wolfcrypt/src/port/ti/ti-hash.c> included by wc_port.c */
34
35#else
36
37#include <wolfssl/wolfcrypt/md5.h>
38#include <wolfssl/wolfcrypt/error-crypt.h>
39#include <wolfssl/wolfcrypt/logging.h>
40#include <wolfssl/wolfcrypt/hash.h>
41
42#ifdef NO_INLINE
43#include <wolfssl/wolfcrypt/misc.h>
44#else
45#define WOLFSSL_MISC_INCLUDED
46#include <wolfcrypt/src/misc.c>
47#endif
48
49
50/* Hardware Acceleration */
51#if defined(STM32_HASH)
52
53/* Supports CubeMX HAL or Standard Peripheral Library */
54#define HAVE_MD5_CUST_API
55
56int wc_InitMd5_ex(wc_Md5* md5, void* heap, int devId)
57{
58 if (md5 == NULL) {
59 return BAD_FUNC_ARG;
60 }
61
62 (void)devId;
63 (void)heap;
64
65 wc_Stm32_Hash_Init(&md5->stmCtx);
66
67 return 0;
68}
69
70int wc_Md5Update(wc_Md5* md5, const byte* data, word32 len)
71{
72 int ret;
73
74 if (md5 == NULL || (data == NULL && len > 0)) {
75 return BAD_FUNC_ARG;
76 }
77
78 ret = wolfSSL_CryptHwMutexLock();
79 if (ret == 0) {
80 ret = wc_Stm32_Hash_Update(&md5->stmCtx, HASH_AlgoSelection_MD5,
81 data, len);
82 wolfSSL_CryptHwMutexUnLock();
83 }
84 return ret;
85}
86
87int wc_Md5Final(wc_Md5* md5, byte* hash)
88{
89 int ret;
90
91 if (md5 == NULL || hash == NULL) {
92 return BAD_FUNC_ARG;
93 }
94
95 ret = wolfSSL_CryptHwMutexLock();
96 if (ret == 0) {
97 ret = wc_Stm32_Hash_Final(&md5->stmCtx, HASH_AlgoSelection_MD5,
98 hash, WC_MD5_DIGEST_SIZE);
99 wolfSSL_CryptHwMutexUnLock();
100 }
101
102 (void)wc_InitMd5(md5); /* reset state */
103
104 return ret;
105}
106
107#elif defined(FREESCALE_MMCAU_SHA)
108
109#ifdef FREESCALE_MMCAU_CLASSIC_SHA
110 #include "cau_api.h"
111#else
112 #include "fsl_mmcau.h"
113#endif
114
115#define XTRANSFORM(S,B) Transform((S), (B))
116#define XTRANSFORM_LEN(S,B,L) Transform_Len((S), (B), (L))
117
118#ifndef WC_HASH_DATA_ALIGNMENT
119 /* these hardware API's require 4 byte (word32) alignment */
120 #define WC_HASH_DATA_ALIGNMENT 4
121#endif
122
123static int Transform(wc_Md5* md5, const byte* data)
124{
125 int ret = wolfSSL_CryptHwMutexLock();
126 if (ret == 0) {
127#ifdef FREESCALE_MMCAU_CLASSIC_SHA
128 cau_md5_hash_n((byte*)data, 1, (unsigned char*)md5->digest);
129#else
130 MMCAU_MD5_HashN((byte*)data, 1, (uint32_t*)md5->digest);
131#endif
132 wolfSSL_CryptHwMutexUnLock();
133 }
134 return ret;
135}
136
137static int Transform_Len(wc_Md5* md5, const byte* data, word32 len)
138{
139 int ret = wolfSSL_CryptHwMutexLock();
140 if (ret == 0) {
141 #if defined(WC_HASH_DATA_ALIGNMENT) && WC_HASH_DATA_ALIGNMENT > 0
142 if ((size_t)data % WC_HASH_DATA_ALIGNMENT) {
143 /* data pointer is NOT aligned,
144 * so copy and perform one block at a time */
145 byte* local = (byte*)md5->buffer;
146 while (len >= WC_MD5_BLOCK_SIZE) {
147 XMEMCPY(local, data, WC_MD5_BLOCK_SIZE);
148 #ifdef FREESCALE_MMCAU_CLASSIC_SHA
149 cau_md5_hash_n(local, 1, (unsigned char*)md5->digest);
150 #else
151 MMCAU_MD5_HashN(local, 1, (uint32_t*)md5->digest);
152 #endif
153 data += WC_MD5_BLOCK_SIZE;
154 len -= WC_MD5_BLOCK_SIZE;
155 }
156 }
157 else
158 #endif
159 {
160#ifdef FREESCALE_MMCAU_CLASSIC_SHA
161 cau_md5_hash_n((byte*)data, len / WC_MD5_BLOCK_SIZE,
162 (unsigned char*)md5->digest);
163#else
164 MMCAU_MD5_HashN((byte*)data, len / WC_MD5_BLOCK_SIZE,
165 (uint32_t*)md5->digest);
166#endif
167 }
168 wolfSSL_CryptHwMutexUnLock();
169 }
170 return ret;
171}
172
173#elif defined(WOLFSSL_PIC32MZ_HASH)
174#include <wolfssl/wolfcrypt/port/pic32/pic32mz-crypt.h>
175#define HAVE_MD5_CUST_API
176
177#elif defined(WOLFSSL_IMX6_CAAM) && !defined(NO_IMX6_CAAM_HASH)
178/* functions implemented in wolfcrypt/src/port/caam/caam_sha.c */
179#define HAVE_MD5_CUST_API
180#else
181#define NEED_SOFT_MD5
182#endif /* End Hardware Acceleration */
183
184#ifdef NEED_SOFT_MD5
185
186#define XTRANSFORM(S,B) Transform((S),(B))
187
188#define F1(x, y, z) (z ^ (x & (y ^ z)))
189#define F2(x, y, z) F1(z, x, y)
190#define F3(x, y, z) (x ^ y ^ z)
191#define F4(x, y, z) (y ^ (x | ~z))
192
193#define MD5STEP(f, w, x, y, z, data, s) \
194 w = rotlFixed(w + f(x, y, z) + data, s) + x
195
196static int Transform(wc_Md5* md5, const byte* data)
197{
198 word32* buffer = (word32*)data;
199 /* Copy context->state[] to working vars */
200 word32 a = md5->digest[0];
201 word32 b = md5->digest[1];
202 word32 c = md5->digest[2];
203 word32 d = md5->digest[3];
204
205 MD5STEP(F1, a, b, c, d, buffer[0] + 0xd76aa478, 7);
206 MD5STEP(F1, d, a, b, c, buffer[1] + 0xe8c7b756, 12);
207 MD5STEP(F1, c, d, a, b, buffer[2] + 0x242070db, 17);
208 MD5STEP(F1, b, c, d, a, buffer[3] + 0xc1bdceee, 22);
209 MD5STEP(F1, a, b, c, d, buffer[4] + 0xf57c0faf, 7);
210 MD5STEP(F1, d, a, b, c, buffer[5] + 0x4787c62a, 12);
211 MD5STEP(F1, c, d, a, b, buffer[6] + 0xa8304613, 17);
212 MD5STEP(F1, b, c, d, a, buffer[7] + 0xfd469501, 22);
213 MD5STEP(F1, a, b, c, d, buffer[8] + 0x698098d8, 7);
214 MD5STEP(F1, d, a, b, c, buffer[9] + 0x8b44f7af, 12);
215 MD5STEP(F1, c, d, a, b, buffer[10] + 0xffff5bb1, 17);
216 MD5STEP(F1, b, c, d, a, buffer[11] + 0x895cd7be, 22);
217 MD5STEP(F1, a, b, c, d, buffer[12] + 0x6b901122, 7);
218 MD5STEP(F1, d, a, b, c, buffer[13] + 0xfd987193, 12);
219 MD5STEP(F1, c, d, a, b, buffer[14] + 0xa679438e, 17);
220 MD5STEP(F1, b, c, d, a, buffer[15] + 0x49b40821, 22);
221
222 MD5STEP(F2, a, b, c, d, buffer[1] + 0xf61e2562, 5);
223 MD5STEP(F2, d, a, b, c, buffer[6] + 0xc040b340, 9);
224 MD5STEP(F2, c, d, a, b, buffer[11] + 0x265e5a51, 14);
225 MD5STEP(F2, b, c, d, a, buffer[0] + 0xe9b6c7aa, 20);
226 MD5STEP(F2, a, b, c, d, buffer[5] + 0xd62f105d, 5);
227 MD5STEP(F2, d, a, b, c, buffer[10] + 0x02441453, 9);
228 MD5STEP(F2, c, d, a, b, buffer[15] + 0xd8a1e681, 14);
229 MD5STEP(F2, b, c, d, a, buffer[4] + 0xe7d3fbc8, 20);
230 MD5STEP(F2, a, b, c, d, buffer[9] + 0x21e1cde6, 5);
231 MD5STEP(F2, d, a, b, c, buffer[14] + 0xc33707d6, 9);
232 MD5STEP(F2, c, d, a, b, buffer[3] + 0xf4d50d87, 14);
233 MD5STEP(F2, b, c, d, a, buffer[8] + 0x455a14ed, 20);
234 MD5STEP(F2, a, b, c, d, buffer[13] + 0xa9e3e905, 5);
235 MD5STEP(F2, d, a, b, c, buffer[2] + 0xfcefa3f8, 9);
236 MD5STEP(F2, c, d, a, b, buffer[7] + 0x676f02d9, 14);
237 MD5STEP(F2, b, c, d, a, buffer[12] + 0x8d2a4c8a, 20);
238
239 MD5STEP(F3, a, b, c, d, buffer[5] + 0xfffa3942, 4);
240 MD5STEP(F3, d, a, b, c, buffer[8] + 0x8771f681, 11);
241 MD5STEP(F3, c, d, a, b, buffer[11] + 0x6d9d6122, 16);
242 MD5STEP(F3, b, c, d, a, buffer[14] + 0xfde5380c, 23);
243 MD5STEP(F3, a, b, c, d, buffer[1] + 0xa4beea44, 4);
244 MD5STEP(F3, d, a, b, c, buffer[4] + 0x4bdecfa9, 11);
245 MD5STEP(F3, c, d, a, b, buffer[7] + 0xf6bb4b60, 16);
246 MD5STEP(F3, b, c, d, a, buffer[10] + 0xbebfbc70, 23);
247 MD5STEP(F3, a, b, c, d, buffer[13] + 0x289b7ec6, 4);
248 MD5STEP(F3, d, a, b, c, buffer[0] + 0xeaa127fa, 11);
249 MD5STEP(F3, c, d, a, b, buffer[3] + 0xd4ef3085, 16);
250 MD5STEP(F3, b, c, d, a, buffer[6] + 0x04881d05, 23);
251 MD5STEP(F3, a, b, c, d, buffer[9] + 0xd9d4d039, 4);
252 MD5STEP(F3, d, a, b, c, buffer[12] + 0xe6db99e5, 11);
253 MD5STEP(F3, c, d, a, b, buffer[15] + 0x1fa27cf8, 16);
254 MD5STEP(F3, b, c, d, a, buffer[2] + 0xc4ac5665, 23);
255
256 MD5STEP(F4, a, b, c, d, buffer[0] + 0xf4292244, 6);
257 MD5STEP(F4, d, a, b, c, buffer[7] + 0x432aff97, 10);
258 MD5STEP(F4, c, d, a, b, buffer[14] + 0xab9423a7, 15);
259 MD5STEP(F4, b, c, d, a, buffer[5] + 0xfc93a039, 21);
260 MD5STEP(F4, a, b, c, d, buffer[12] + 0x655b59c3, 6);
261 MD5STEP(F4, d, a, b, c, buffer[3] + 0x8f0ccc92, 10);
262 MD5STEP(F4, c, d, a, b, buffer[10] + 0xffeff47d, 15);
263 MD5STEP(F4, b, c, d, a, buffer[1] + 0x85845dd1, 21);
264 MD5STEP(F4, a, b, c, d, buffer[8] + 0x6fa87e4f, 6);
265 MD5STEP(F4, d, a, b, c, buffer[15] + 0xfe2ce6e0, 10);
266 MD5STEP(F4, c, d, a, b, buffer[6] + 0xa3014314, 15);
267 MD5STEP(F4, b, c, d, a, buffer[13] + 0x4e0811a1, 21);
268 MD5STEP(F4, a, b, c, d, buffer[4] + 0xf7537e82, 6);
269 MD5STEP(F4, d, a, b, c, buffer[11] + 0xbd3af235, 10);
270 MD5STEP(F4, c, d, a, b, buffer[2] + 0x2ad7d2bb, 15);
271 MD5STEP(F4, b, c, d, a, buffer[9] + 0xeb86d391, 21);
272
273 /* Add the working vars back into digest state[] */
274 md5->digest[0] += a;
275 md5->digest[1] += b;
276 md5->digest[2] += c;
277 md5->digest[3] += d;
278
279 return 0;
280}
281#endif /* NEED_SOFT_MD5 */
282
283#ifndef HAVE_MD5_CUST_API
284
285static WC_INLINE void AddLength(wc_Md5* md5, word32 len)
286{
287 word32 tmp = md5->loLen;
288 if ((md5->loLen += len) < tmp) {
289 md5->hiLen++; /* carry low to high */
290 }
291}
292
293static int _InitMd5(wc_Md5* md5)
294{
295 int ret = 0;
296
297 md5->digest[0] = 0x67452301L;
298 md5->digest[1] = 0xefcdab89L;
299 md5->digest[2] = 0x98badcfeL;
300 md5->digest[3] = 0x10325476L;
301
302 md5->buffLen = 0;
303 md5->loLen = 0;
304 md5->hiLen = 0;
305#if defined(WOLFSSL_HASH_FLAGS) || defined(WOLF_CRYPTO_CB)
306 md5->flags = 0;
307#endif
308
309 return ret;
310}
311
312int wc_InitMd5_ex(wc_Md5* md5, void* heap, int devId)
313{
314 int ret = 0;
315
316 if (md5 == NULL)
317 return BAD_FUNC_ARG;
318
319 md5->heap = heap;
320
321 ret = _InitMd5(md5);
322 if (ret != 0)
323 return ret;
324
325#if defined(WOLFSSL_ASYNC_CRYPT) && defined(WC_ASYNC_ENABLE_MD5)
326 ret = wolfAsync_DevCtxInit(&md5->asyncDev, WOLFSSL_ASYNC_MARKER_MD5,
327 md5->heap, devId);
328#else
329 (void)devId;
330#endif
331 return ret;
332}
333
334/* do block size increments/updates */
335int wc_Md5Update(wc_Md5* md5, const byte* data, word32 len)
336{
337 int ret = 0;
338 word32 blocksLen;
339 byte* local;
340
341 if (md5 == NULL || (data == NULL && len > 0)) {
342 return BAD_FUNC_ARG;
343 }
344
345#if defined(WOLFSSL_ASYNC_CRYPT) && defined(WC_ASYNC_ENABLE_MD5)
346 if (md5->asyncDev.marker == WOLFSSL_ASYNC_MARKER_MD5) {
347#if defined(HAVE_INTEL_QA)
348 return IntelQaSymMd5(&md5->asyncDev, NULL, data, len);
349#endif
350 }
351#endif /* WOLFSSL_ASYNC_CRYPT */
352
353 /* check that internal buffLen is valid */
354 if (md5->buffLen >= WC_MD5_BLOCK_SIZE)
355 return BUFFER_E;
356
357 if (data == NULL && len == 0) {
358 /* valid, but do nothing */
359 return 0;
360 }
361
362 /* add length for final */
363 AddLength(md5, len);
364
365 local = (byte*)md5->buffer;
366
367 /* process any remainder from previous operation */
368 if (md5->buffLen > 0) {
369 blocksLen = min(len, WC_MD5_BLOCK_SIZE - md5->buffLen);
370 XMEMCPY(&local[md5->buffLen], data, blocksLen);
371
372 md5->buffLen += blocksLen;
373 data += blocksLen;
374 len -= blocksLen;
375
376 if (md5->buffLen == WC_MD5_BLOCK_SIZE) {
377 #if defined(BIG_ENDIAN_ORDER) && !defined(FREESCALE_MMCAU_SHA)
378 ByteReverseWords(md5->buffer, md5->buffer, WC_MD5_BLOCK_SIZE);
379 #endif
380
381 ret = XTRANSFORM(md5, (const byte*)local);
382 if (ret != 0)
383 return ret;
384
385 md5->buffLen = 0;
386 }
387 }
388
389 /* process blocks */
390#ifdef XTRANSFORM_LEN
391 /* get number of blocks */
392 /* 64-1 = 0x3F (~ Inverted = 0xFFFFFFC0) */
393 /* len (masked by 0xFFFFFFC0) returns block aligned length */
394 blocksLen = len & ~(WC_MD5_BLOCK_SIZE-1);
395 if (blocksLen > 0) {
396 /* Byte reversal performed in function if required. */
397 XTRANSFORM_LEN(md5, data, blocksLen);
398 data += blocksLen;
399 len -= blocksLen;
400 }
401#else
402 while (len >= WC_MD5_BLOCK_SIZE) {
403 word32* local32 = md5->buffer;
404 /* optimization to avoid memcpy if data pointer is properly aligned */
405 /* Big Endian requires byte swap, so can't use data directly */
406 #if defined(WC_HASH_DATA_ALIGNMENT) && !defined(BIG_ENDIAN_ORDER)
407 if (((size_t)data % WC_HASH_DATA_ALIGNMENT) == 0) {
408 local32 = (word32*)data;
409 }
410 else
411 #endif
412 {
413 XMEMCPY(local32, data, WC_MD5_BLOCK_SIZE);
414 }
415
416 data += WC_MD5_BLOCK_SIZE;
417 len -= WC_MD5_BLOCK_SIZE;
418
419 #if defined(BIG_ENDIAN_ORDER) && !defined(FREESCALE_MMCAU_SHA)
420 ByteReverseWords(local32, local32, WC_MD5_BLOCK_SIZE);
421 #endif
422
423 ret = XTRANSFORM(md5, (const byte*)local32);
424 }
425#endif /* XTRANSFORM_LEN */
426
427 /* save remainder */
428 if (len > 0) {
429 XMEMCPY(local, data, len);
430 md5->buffLen = len;
431 }
432
433 return ret;
434}
435
436int wc_Md5Final(wc_Md5* md5, byte* hash)
437{
438 byte* local;
439
440 if (md5 == NULL || hash == NULL) {
441 return BAD_FUNC_ARG;
442 }
443
444#if defined(WOLFSSL_ASYNC_CRYPT) && defined(WC_ASYNC_ENABLE_MD5)
445 if (md5->asyncDev.marker == WOLFSSL_ASYNC_MARKER_MD5) {
446#if defined(HAVE_INTEL_QA)
447 return IntelQaSymMd5(&md5->asyncDev, hash, NULL, WC_MD5_DIGEST_SIZE);
448#endif
449 }
450#endif /* WOLFSSL_ASYNC_CRYPT */
451
452 local = (byte*)md5->buffer;
453
454 local[md5->buffLen++] = 0x80; /* add 1 */
455
456 /* pad with zeros */
457 if (md5->buffLen > WC_MD5_PAD_SIZE) {
458 XMEMSET(&local[md5->buffLen], 0, WC_MD5_BLOCK_SIZE - md5->buffLen);
459 md5->buffLen += WC_MD5_BLOCK_SIZE - md5->buffLen;
460
461#if defined(BIG_ENDIAN_ORDER) && !defined(FREESCALE_MMCAU_SHA)
462 ByteReverseWords(md5->buffer, md5->buffer, WC_MD5_BLOCK_SIZE);
463#endif
464 XTRANSFORM(md5, local);
465 md5->buffLen = 0;
466 }
467 XMEMSET(&local[md5->buffLen], 0, WC_MD5_PAD_SIZE - md5->buffLen);
468
469#if defined(BIG_ENDIAN_ORDER) && !defined(FREESCALE_MMCAU_SHA)
470 ByteReverseWords(md5->buffer, md5->buffer, WC_MD5_BLOCK_SIZE);
471#endif
472
473 /* put lengths in bits */
474 md5->hiLen = (md5->loLen >> (8 * sizeof(md5->loLen) - 3)) +
475 (md5->hiLen << 3);
476 md5->loLen = md5->loLen << 3;
477
478 /* store lengths */
479 /* ! length ordering dependent on digest endian type ! */
480 XMEMCPY(&local[WC_MD5_PAD_SIZE], &md5->loLen, sizeof(word32));
481 XMEMCPY(&local[WC_MD5_PAD_SIZE + sizeof(word32)], &md5->hiLen, sizeof(word32));
482
483 /* final transform and result to hash */
484 XTRANSFORM(md5, local);
485#ifdef BIG_ENDIAN_ORDER
486 ByteReverseWords(md5->digest, md5->digest, WC_MD5_DIGEST_SIZE);
487#endif
488 XMEMCPY(hash, md5->digest, WC_MD5_DIGEST_SIZE);
489
490 return _InitMd5(md5); /* reset state */
491}
492#endif /* !HAVE_MD5_CUST_API */
493
494
495int wc_InitMd5(wc_Md5* md5)
496{
497 if (md5 == NULL) {
498 return BAD_FUNC_ARG;
499 }
500 return wc_InitMd5_ex(md5, NULL, INVALID_DEVID);
501}
502
503void wc_Md5Free(wc_Md5* md5)
504{
505 if (md5 == NULL)
506 return;
507#if defined(WOLFSSL_ASYNC_CRYPT) && defined(WC_ASYNC_ENABLE_MD5)
508 wolfAsync_DevCtxFree(&md5->asyncDev, WOLFSSL_ASYNC_MARKER_MD5);
509#endif /* WOLFSSL_ASYNC_CRYPT */
510
511#ifdef WOLFSSL_PIC32MZ_HASH
512 wc_Md5Pic32Free(md5);
513#endif
514}
515
516int wc_Md5GetHash(wc_Md5* md5, byte* hash)
517{
518 int ret;
519 wc_Md5 tmpMd5;
520
521 if (md5 == NULL || hash == NULL)
522 return BAD_FUNC_ARG;
523
524 ret = wc_Md5Copy(md5, &tmpMd5);
525 if (ret == 0) {
526 ret = wc_Md5Final(&tmpMd5, hash);
527 }
528
529 return ret;
530}
531
532int wc_Md5Copy(wc_Md5* src, wc_Md5* dst)
533{
534 int ret = 0;
535
536 if (src == NULL || dst == NULL)
537 return BAD_FUNC_ARG;
538
539 XMEMCPY(dst, src, sizeof(wc_Md5));
540
541#ifdef WOLFSSL_ASYNC_CRYPT
542 ret = wolfAsync_DevCopy(&src->asyncDev, &dst->asyncDev);
543#endif
544#ifdef WOLFSSL_PIC32MZ_HASH
545 ret = wc_Pic32HashCopy(&src->cache, &dst->cache);
546#endif
547#if defined(WOLFSSL_HASH_FLAGS) || defined(WOLF_CRYPTO_CB)
548 dst->flags |= WC_HASH_FLAG_ISCOPY;
549#endif
550
551 return ret;
552}
553
554#if defined(WOLFSSL_HASH_FLAGS) || defined(WOLF_CRYPTO_CB)
555int wc_Md5SetFlags(wc_Md5* md5, word32 flags)
556{
557 if (md5) {
558 md5->flags = flags;
559 }
560 return 0;
561}
562int wc_Md5GetFlags(wc_Md5* md5, word32* flags)
563{
564 if (md5 && flags) {
565 *flags = md5->flags;
566 }
567 return 0;
568}
569#endif
570
571#endif /* WOLFSSL_TI_HASH */
572#endif /* NO_MD5 */
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