1: /***************************************************************************
2: * _ _ ____ _
3: * Project ___| | | | _ \| |
4: * / __| | | | |_) | |
5: * | (__| |_| | _ <| |___
6: * \___|\___/|_| \_\_____|
7: *
8: * Copyright (C) 1998 - 2020, Daniel Stenberg, <daniel@haxx.se>, et al.
9: *
10: * This software is licensed as described in the file COPYING, which
11: * you should have received as part of this distribution. The terms
12: * are also available at https://curl.haxx.se/docs/copyright.html.
13: *
14: * You may opt to use, copy, modify, merge, publish, distribute and/or sell
15: * copies of the Software, and permit persons to whom the Software is
16: * furnished to do so, under the terms of the COPYING file.
17: *
18: * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
19: * KIND, either express or implied.
20: *
21: ***************************************************************************/
22:
23: #include "curl_setup.h"
24:
25: #ifndef CURL_DISABLE_CRYPTO_AUTH
26:
27: #include <curl/curl.h>
28:
29: #include "curl_md5.h"
30: #include "curl_hmac.h"
31: #include "warnless.h"
32:
33: #ifdef USE_MBEDTLS
34: #include <mbedtls/version.h>
35:
36: #if(MBEDTLS_VERSION_NUMBER >= 0x02070000)
37: #define HAS_MBEDTLS_RESULT_CODE_BASED_FUNCTIONS
38: #endif
39: #endif /* USE_MBEDTLS */
40:
41: #if defined(USE_GNUTLS_NETTLE)
42:
43: #include <nettle/md5.h>
44: #include "curl_memory.h"
45: /* The last #include file should be: */
46: #include "memdebug.h"
47:
48: typedef struct md5_ctx MD5_CTX;
49:
50: static void MD5_Init(MD5_CTX *ctx)
51: {
52: md5_init(ctx);
53: }
54:
55: static void MD5_Update(MD5_CTX *ctx,
56: const unsigned char *input,
57: unsigned int inputLen)
58: {
59: md5_update(ctx, inputLen, input);
60: }
61:
62: static void MD5_Final(unsigned char *digest, MD5_CTX *ctx)
63: {
64: md5_digest(ctx, 16, digest);
65: }
66:
67: #elif defined(USE_GNUTLS)
68:
69: #include <gcrypt.h>
70: #include "curl_memory.h"
71: /* The last #include file should be: */
72: #include "memdebug.h"
73:
74: typedef gcry_md_hd_t MD5_CTX;
75:
76: static void MD5_Init(MD5_CTX *ctx)
77: {
78: gcry_md_open(ctx, GCRY_MD_MD5, 0);
79: }
80:
81: static void MD5_Update(MD5_CTX *ctx,
82: const unsigned char *input,
83: unsigned int inputLen)
84: {
85: gcry_md_write(*ctx, input, inputLen);
86: }
87:
88: static void MD5_Final(unsigned char *digest, MD5_CTX *ctx)
89: {
90: memcpy(digest, gcry_md_read(*ctx, 0), 16);
91: gcry_md_close(*ctx);
92: }
93:
94: #elif defined(USE_OPENSSL) && !defined(USE_AMISSL)
95: /* When OpenSSL is available we use the MD5-function from OpenSSL */
96: #include <openssl/md5.h>
97: #include "curl_memory.h"
98: /* The last #include file should be: */
99: #include "memdebug.h"
100:
101: #elif defined(USE_MBEDTLS)
102:
103: #include <mbedtls/md5.h>
104:
105: #include "curl_memory.h"
106:
107: /* The last #include file should be: */
108: #include "memdebug.h"
109:
110: typedef mbedtls_md5_context MD5_CTX;
111:
112: static void MD5_Init(MD5_CTX *ctx)
113: {
114: #if !defined(HAS_MBEDTLS_RESULT_CODE_BASED_FUNCTIONS)
115: mbedtls_md5_starts(ctx);
116: #else
117: (void) mbedtls_md5_starts_ret(ctx);
118: #endif
119: }
120:
121: static void MD5_Update(MD5_CTX *ctx,
122: const unsigned char *data,
123: unsigned int length)
124: {
125: #if !defined(HAS_MBEDTLS_RESULT_CODE_BASED_FUNCTIONS)
126: mbedtls_md5_update(ctx, data, length);
127: #else
128: (void) mbedtls_md5_update_ret(ctx, data, length);
129: #endif
130: }
131:
132: static void MD5_Final(unsigned char *digest, MD5_CTX *ctx)
133: {
134: #if !defined(HAS_MBEDTLS_RESULT_CODE_BASED_FUNCTIONS)
135: mbedtls_md5_finish(ctx, digest);
136: #else
137: (void) mbedtls_md5_finish_ret(ctx, digest);
138: #endif
139: }
140:
141: #elif (defined(__MAC_OS_X_VERSION_MAX_ALLOWED) && \
142: (__MAC_OS_X_VERSION_MAX_ALLOWED >= 1040)) || \
143: (defined(__IPHONE_OS_VERSION_MAX_ALLOWED) && \
144: (__IPHONE_OS_VERSION_MAX_ALLOWED >= 20000))
145:
146: /* For Apple operating systems: CommonCrypto has the functions we need.
147: These functions are available on Tiger and later, as well as iOS 2.0
148: and later. If you're building for an older cat, well, sorry.
149:
150: Declaring the functions as static like this seems to be a bit more
151: reliable than defining COMMON_DIGEST_FOR_OPENSSL on older cats. */
152: # include <CommonCrypto/CommonDigest.h>
153: # define MD5_CTX CC_MD5_CTX
154: #include "curl_memory.h"
155: /* The last #include file should be: */
156: #include "memdebug.h"
157:
158: static void MD5_Init(MD5_CTX *ctx)
159: {
160: CC_MD5_Init(ctx);
161: }
162:
163: static void MD5_Update(MD5_CTX *ctx,
164: const unsigned char *input,
165: unsigned int inputLen)
166: {
167: CC_MD5_Update(ctx, input, inputLen);
168: }
169:
170: static void MD5_Final(unsigned char *digest, MD5_CTX *ctx)
171: {
172: CC_MD5_Final(digest, ctx);
173: }
174:
175: #elif defined(USE_WIN32_CRYPTO)
176:
177: #include <wincrypt.h>
178: #include "curl_memory.h"
179: /* The last #include file should be: */
180: #include "memdebug.h"
181:
182: typedef struct {
183: HCRYPTPROV hCryptProv;
184: HCRYPTHASH hHash;
185: } MD5_CTX;
186:
187: static void MD5_Init(MD5_CTX *ctx)
188: {
189: if(CryptAcquireContext(&ctx->hCryptProv, NULL, NULL, PROV_RSA_FULL,
190: CRYPT_VERIFYCONTEXT | CRYPT_SILENT)) {
191: CryptCreateHash(ctx->hCryptProv, CALG_MD5, 0, 0, &ctx->hHash);
192: }
193: }
194:
195: static void MD5_Update(MD5_CTX *ctx,
196: const unsigned char *input,
197: unsigned int inputLen)
198: {
199: CryptHashData(ctx->hHash, (unsigned char *)input, inputLen, 0);
200: }
201:
202: static void MD5_Final(unsigned char *digest, MD5_CTX *ctx)
203: {
204: unsigned long length = 0;
205: CryptGetHashParam(ctx->hHash, HP_HASHVAL, NULL, &length, 0);
206: if(length == 16)
207: CryptGetHashParam(ctx->hHash, HP_HASHVAL, digest, &length, 0);
208: if(ctx->hHash)
209: CryptDestroyHash(ctx->hHash);
210: if(ctx->hCryptProv)
211: CryptReleaseContext(ctx->hCryptProv, 0);
212: }
213:
214: #else
215:
216: /* When no other crypto library is available we use this code segment */
217:
218: /*
219: * This is an OpenSSL-compatible implementation of the RSA Data Security, Inc.
220: * MD5 Message-Digest Algorithm (RFC 1321).
221: *
222: * Homepage:
223: https://openwall.info/wiki/people/solar/software/public-domain-source-code/md5
224: *
225: * Author:
226: * Alexander Peslyak, better known as Solar Designer <solar at openwall.com>
227: *
228: * This software was written by Alexander Peslyak in 2001. No copyright is
229: * claimed, and the software is hereby placed in the public domain.
230: * In case this attempt to disclaim copyright and place the software in the
231: * public domain is deemed null and void, then the software is
232: * Copyright (c) 2001 Alexander Peslyak and it is hereby released to the
233: * general public under the following terms:
234: *
235: * Redistribution and use in source and binary forms, with or without
236: * modification, are permitted.
237: *
238: * There's ABSOLUTELY NO WARRANTY, express or implied.
239: *
240: * (This is a heavily cut-down "BSD license".)
241: *
242: * This differs from Colin Plumb's older public domain implementation in that
243: * no exactly 32-bit integer data type is required (any 32-bit or wider
244: * unsigned integer data type will do), there's no compile-time endianness
245: * configuration, and the function prototypes match OpenSSL's. No code from
246: * Colin Plumb's implementation has been reused; this comment merely compares
247: * the properties of the two independent implementations.
248: *
249: * The primary goals of this implementation are portability and ease of use.
250: * It is meant to be fast, but not as fast as possible. Some known
251: * optimizations are not included to reduce source code size and avoid
252: * compile-time configuration.
253: */
254:
255: #include <string.h>
256:
257: /* The last #include files should be: */
258: #include "curl_memory.h"
259: #include "memdebug.h"
260:
261: /* Any 32-bit or wider unsigned integer data type will do */
262: typedef unsigned int MD5_u32plus;
263:
264: typedef struct {
265: MD5_u32plus lo, hi;
266: MD5_u32plus a, b, c, d;
267: unsigned char buffer[64];
268: MD5_u32plus block[16];
269: } MD5_CTX;
270:
271: static void MD5_Init(MD5_CTX *ctx);
272: static void MD5_Update(MD5_CTX *ctx, const void *data, unsigned long size);
273: static void MD5_Final(unsigned char *result, MD5_CTX *ctx);
274:
275: /*
276: * The basic MD5 functions.
277: *
278: * F and G are optimized compared to their RFC 1321 definitions for
279: * architectures that lack an AND-NOT instruction, just like in Colin Plumb's
280: * implementation.
281: */
282: #define F(x, y, z) ((z) ^ ((x) & ((y) ^ (z))))
283: #define G(x, y, z) ((y) ^ ((z) & ((x) ^ (y))))
284: #define H(x, y, z) (((x) ^ (y)) ^ (z))
285: #define H2(x, y, z) ((x) ^ ((y) ^ (z)))
286: #define I(x, y, z) ((y) ^ ((x) | ~(z)))
287:
288: /*
289: * The MD5 transformation for all four rounds.
290: */
291: #define STEP(f, a, b, c, d, x, t, s) \
292: (a) += f((b), (c), (d)) + (x) + (t); \
293: (a) = (((a) << (s)) | (((a) & 0xffffffff) >> (32 - (s)))); \
294: (a) += (b);
295:
296: /*
297: * SET reads 4 input bytes in little-endian byte order and stores them
298: * in a properly aligned word in host byte order.
299: *
300: * The check for little-endian architectures that tolerate unaligned
301: * memory accesses is just an optimization. Nothing will break if it
302: * doesn't work.
303: */
304: #if defined(__i386__) || defined(__x86_64__) || defined(__vax__)
305: #define SET(n) \
306: (*(MD5_u32plus *)(void *)&ptr[(n) * 4])
307: #define GET(n) \
308: SET(n)
309: #else
310: #define SET(n) \
311: (ctx->block[(n)] = \
312: (MD5_u32plus)ptr[(n) * 4] | \
313: ((MD5_u32plus)ptr[(n) * 4 + 1] << 8) | \
314: ((MD5_u32plus)ptr[(n) * 4 + 2] << 16) | \
315: ((MD5_u32plus)ptr[(n) * 4 + 3] << 24))
316: #define GET(n) \
317: (ctx->block[(n)])
318: #endif
319:
320: /*
321: * This processes one or more 64-byte data blocks, but does NOT update
322: * the bit counters. There are no alignment requirements.
323: */
324: static const void *body(MD5_CTX *ctx, const void *data, unsigned long size)
325: {
326: const unsigned char *ptr;
327: MD5_u32plus a, b, c, d;
328:
329: ptr = (const unsigned char *)data;
330:
331: a = ctx->a;
332: b = ctx->b;
333: c = ctx->c;
334: d = ctx->d;
335:
336: do {
337: MD5_u32plus saved_a, saved_b, saved_c, saved_d;
338:
339: saved_a = a;
340: saved_b = b;
341: saved_c = c;
342: saved_d = d;
343:
344: /* Round 1 */
345: STEP(F, a, b, c, d, SET(0), 0xd76aa478, 7)
346: STEP(F, d, a, b, c, SET(1), 0xe8c7b756, 12)
347: STEP(F, c, d, a, b, SET(2), 0x242070db, 17)
348: STEP(F, b, c, d, a, SET(3), 0xc1bdceee, 22)
349: STEP(F, a, b, c, d, SET(4), 0xf57c0faf, 7)
350: STEP(F, d, a, b, c, SET(5), 0x4787c62a, 12)
351: STEP(F, c, d, a, b, SET(6), 0xa8304613, 17)
352: STEP(F, b, c, d, a, SET(7), 0xfd469501, 22)
353: STEP(F, a, b, c, d, SET(8), 0x698098d8, 7)
354: STEP(F, d, a, b, c, SET(9), 0x8b44f7af, 12)
355: STEP(F, c, d, a, b, SET(10), 0xffff5bb1, 17)
356: STEP(F, b, c, d, a, SET(11), 0x895cd7be, 22)
357: STEP(F, a, b, c, d, SET(12), 0x6b901122, 7)
358: STEP(F, d, a, b, c, SET(13), 0xfd987193, 12)
359: STEP(F, c, d, a, b, SET(14), 0xa679438e, 17)
360: STEP(F, b, c, d, a, SET(15), 0x49b40821, 22)
361:
362: /* Round 2 */
363: STEP(G, a, b, c, d, GET(1), 0xf61e2562, 5)
364: STEP(G, d, a, b, c, GET(6), 0xc040b340, 9)
365: STEP(G, c, d, a, b, GET(11), 0x265e5a51, 14)
366: STEP(G, b, c, d, a, GET(0), 0xe9b6c7aa, 20)
367: STEP(G, a, b, c, d, GET(5), 0xd62f105d, 5)
368: STEP(G, d, a, b, c, GET(10), 0x02441453, 9)
369: STEP(G, c, d, a, b, GET(15), 0xd8a1e681, 14)
370: STEP(G, b, c, d, a, GET(4), 0xe7d3fbc8, 20)
371: STEP(G, a, b, c, d, GET(9), 0x21e1cde6, 5)
372: STEP(G, d, a, b, c, GET(14), 0xc33707d6, 9)
373: STEP(G, c, d, a, b, GET(3), 0xf4d50d87, 14)
374: STEP(G, b, c, d, a, GET(8), 0x455a14ed, 20)
375: STEP(G, a, b, c, d, GET(13), 0xa9e3e905, 5)
376: STEP(G, d, a, b, c, GET(2), 0xfcefa3f8, 9)
377: STEP(G, c, d, a, b, GET(7), 0x676f02d9, 14)
378: STEP(G, b, c, d, a, GET(12), 0x8d2a4c8a, 20)
379:
380: /* Round 3 */
381: STEP(H, a, b, c, d, GET(5), 0xfffa3942, 4)
382: STEP(H2, d, a, b, c, GET(8), 0x8771f681, 11)
383: STEP(H, c, d, a, b, GET(11), 0x6d9d6122, 16)
384: STEP(H2, b, c, d, a, GET(14), 0xfde5380c, 23)
385: STEP(H, a, b, c, d, GET(1), 0xa4beea44, 4)
386: STEP(H2, d, a, b, c, GET(4), 0x4bdecfa9, 11)
387: STEP(H, c, d, a, b, GET(7), 0xf6bb4b60, 16)
388: STEP(H2, b, c, d, a, GET(10), 0xbebfbc70, 23)
389: STEP(H, a, b, c, d, GET(13), 0x289b7ec6, 4)
390: STEP(H2, d, a, b, c, GET(0), 0xeaa127fa, 11)
391: STEP(H, c, d, a, b, GET(3), 0xd4ef3085, 16)
392: STEP(H2, b, c, d, a, GET(6), 0x04881d05, 23)
393: STEP(H, a, b, c, d, GET(9), 0xd9d4d039, 4)
394: STEP(H2, d, a, b, c, GET(12), 0xe6db99e5, 11)
395: STEP(H, c, d, a, b, GET(15), 0x1fa27cf8, 16)
396: STEP(H2, b, c, d, a, GET(2), 0xc4ac5665, 23)
397:
398: /* Round 4 */
399: STEP(I, a, b, c, d, GET(0), 0xf4292244, 6)
400: STEP(I, d, a, b, c, GET(7), 0x432aff97, 10)
401: STEP(I, c, d, a, b, GET(14), 0xab9423a7, 15)
402: STEP(I, b, c, d, a, GET(5), 0xfc93a039, 21)
403: STEP(I, a, b, c, d, GET(12), 0x655b59c3, 6)
404: STEP(I, d, a, b, c, GET(3), 0x8f0ccc92, 10)
405: STEP(I, c, d, a, b, GET(10), 0xffeff47d, 15)
406: STEP(I, b, c, d, a, GET(1), 0x85845dd1, 21)
407: STEP(I, a, b, c, d, GET(8), 0x6fa87e4f, 6)
408: STEP(I, d, a, b, c, GET(15), 0xfe2ce6e0, 10)
409: STEP(I, c, d, a, b, GET(6), 0xa3014314, 15)
410: STEP(I, b, c, d, a, GET(13), 0x4e0811a1, 21)
411: STEP(I, a, b, c, d, GET(4), 0xf7537e82, 6)
412: STEP(I, d, a, b, c, GET(11), 0xbd3af235, 10)
413: STEP(I, c, d, a, b, GET(2), 0x2ad7d2bb, 15)
414: STEP(I, b, c, d, a, GET(9), 0xeb86d391, 21)
415:
416: a += saved_a;
417: b += saved_b;
418: c += saved_c;
419: d += saved_d;
420:
421: ptr += 64;
422: } while(size -= 64);
423:
424: ctx->a = a;
425: ctx->b = b;
426: ctx->c = c;
427: ctx->d = d;
428:
429: return ptr;
430: }
431:
432: static void MD5_Init(MD5_CTX *ctx)
433: {
434: ctx->a = 0x67452301;
435: ctx->b = 0xefcdab89;
436: ctx->c = 0x98badcfe;
437: ctx->d = 0x10325476;
438:
439: ctx->lo = 0;
440: ctx->hi = 0;
441: }
442:
443: static void MD5_Update(MD5_CTX *ctx, const void *data, unsigned long size)
444: {
445: MD5_u32plus saved_lo;
446: unsigned long used;
447:
448: saved_lo = ctx->lo;
449: ctx->lo = (saved_lo + size) & 0x1fffffff;
450: if(ctx->lo < saved_lo)
451: ctx->hi++;
452: ctx->hi += (MD5_u32plus)size >> 29;
453:
454: used = saved_lo & 0x3f;
455:
456: if(used) {
457: unsigned long available = 64 - used;
458:
459: if(size < available) {
460: memcpy(&ctx->buffer[used], data, size);
461: return;
462: }
463:
464: memcpy(&ctx->buffer[used], data, available);
465: data = (const unsigned char *)data + available;
466: size -= available;
467: body(ctx, ctx->buffer, 64);
468: }
469:
470: if(size >= 64) {
471: data = body(ctx, data, size & ~(unsigned long)0x3f);
472: size &= 0x3f;
473: }
474:
475: memcpy(ctx->buffer, data, size);
476: }
477:
478: static void MD5_Final(unsigned char *result, MD5_CTX *ctx)
479: {
480: unsigned long used, available;
481:
482: used = ctx->lo & 0x3f;
483:
484: ctx->buffer[used++] = 0x80;
485:
486: available = 64 - used;
487:
488: if(available < 8) {
489: memset(&ctx->buffer[used], 0, available);
490: body(ctx, ctx->buffer, 64);
491: used = 0;
492: available = 64;
493: }
494:
495: memset(&ctx->buffer[used], 0, available - 8);
496:
497: ctx->lo <<= 3;
498: ctx->buffer[56] = curlx_ultouc((ctx->lo)&0xff);
499: ctx->buffer[57] = curlx_ultouc((ctx->lo >> 8)&0xff);
500: ctx->buffer[58] = curlx_ultouc((ctx->lo >> 16)&0xff);
501: ctx->buffer[59] = curlx_ultouc(ctx->lo >> 24);
502: ctx->buffer[60] = curlx_ultouc((ctx->hi)&0xff);
503: ctx->buffer[61] = curlx_ultouc((ctx->hi >> 8)&0xff);
504: ctx->buffer[62] = curlx_ultouc((ctx->hi >> 16)&0xff);
505: ctx->buffer[63] = curlx_ultouc(ctx->hi >> 24);
506:
507: body(ctx, ctx->buffer, 64);
508:
509: result[0] = curlx_ultouc((ctx->a)&0xff);
510: result[1] = curlx_ultouc((ctx->a >> 8)&0xff);
511: result[2] = curlx_ultouc((ctx->a >> 16)&0xff);
512: result[3] = curlx_ultouc(ctx->a >> 24);
513: result[4] = curlx_ultouc((ctx->b)&0xff);
514: result[5] = curlx_ultouc((ctx->b >> 8)&0xff);
515: result[6] = curlx_ultouc((ctx->b >> 16)&0xff);
516: result[7] = curlx_ultouc(ctx->b >> 24);
517: result[8] = curlx_ultouc((ctx->c)&0xff);
518: result[9] = curlx_ultouc((ctx->c >> 8)&0xff);
519: result[10] = curlx_ultouc((ctx->c >> 16)&0xff);
520: result[11] = curlx_ultouc(ctx->c >> 24);
521: result[12] = curlx_ultouc((ctx->d)&0xff);
522: result[13] = curlx_ultouc((ctx->d >> 8)&0xff);
523: result[14] = curlx_ultouc((ctx->d >> 16)&0xff);
524: result[15] = curlx_ultouc(ctx->d >> 24);
525:
526: memset(ctx, 0, sizeof(*ctx));
527: }
528:
529: #endif /* CRYPTO LIBS */
530:
531: const HMAC_params Curl_HMAC_MD5[] = {
532: {
533: /* Hash initialization function. */
534: CURLX_FUNCTION_CAST(HMAC_hinit_func, MD5_Init),
535: /* Hash update function. */
536: CURLX_FUNCTION_CAST(HMAC_hupdate_func, MD5_Update),
537: /* Hash computation end function. */
538: CURLX_FUNCTION_CAST(HMAC_hfinal_func, MD5_Final),
539: /* Size of hash context structure. */
540: sizeof(MD5_CTX),
541: /* Maximum key length. */
542: 64,
543: /* Result size. */
544: 16
545: }
546: };
547:
548: const MD5_params Curl_DIGEST_MD5[] = {
549: {
550: /* Digest initialization function */
551: CURLX_FUNCTION_CAST(Curl_MD5_init_func, MD5_Init),
552: /* Digest update function */
553: CURLX_FUNCTION_CAST(Curl_MD5_update_func, MD5_Update),
554: /* Digest computation end function */
555: CURLX_FUNCTION_CAST(Curl_MD5_final_func, MD5_Final),
556: /* Size of digest context struct */
557: sizeof(MD5_CTX),
558: /* Result size */
559: 16
560: }
561: };
562:
563: /*
564: * @unittest: 1601
565: */
566: void Curl_md5it(unsigned char *outbuffer, const unsigned char *input,
567: const size_t len)
568: {
569: MD5_CTX ctx;
570:
571: MD5_Init(&ctx);
572: MD5_Update(&ctx, input, curlx_uztoui(len));
573: MD5_Final(outbuffer, &ctx);
574: }
575:
576: MD5_context *Curl_MD5_init(const MD5_params *md5params)
577: {
578: MD5_context *ctxt;
579:
580: /* Create MD5 context */
581: ctxt = malloc(sizeof(*ctxt));
582:
583: if(!ctxt)
584: return ctxt;
585:
586: ctxt->md5_hashctx = malloc(md5params->md5_ctxtsize);
587:
588: if(!ctxt->md5_hashctx) {
589: free(ctxt);
590: return NULL;
591: }
592:
593: ctxt->md5_hash = md5params;
594:
595: (*md5params->md5_init_func)(ctxt->md5_hashctx);
596:
597: return ctxt;
598: }
599:
600: CURLcode Curl_MD5_update(MD5_context *context,
601: const unsigned char *data,
602: unsigned int len)
603: {
604: (*context->md5_hash->md5_update_func)(context->md5_hashctx, data, len);
605:
606: return CURLE_OK;
607: }
608:
609: CURLcode Curl_MD5_final(MD5_context *context, unsigned char *result)
610: {
611: (*context->md5_hash->md5_final_func)(result, context->md5_hashctx);
612:
613: free(context->md5_hashctx);
614: free(context);
615:
616: return CURLE_OK;
617: }
618:
619: #endif /* CURL_DISABLE_CRYPTO_AUTH */
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