1 /*
2 * Copyright 1999-2024 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10 /*
11 * HMAC low level APIs are deprecated for public use, but still ok for internal
12 * use.
13 */
14 #include "internal/deprecated.h"
15
16 #include <stdio.h>
17 #include "internal/cryptlib.h"
18 #include "crypto/evp.h"
19 #include <openssl/crypto.h>
20 #include <openssl/hmac.h>
21 #include <openssl/rand.h>
22 #include <openssl/pkcs12.h>
23 #include "p12_local.h"
24
25 static int pkcs12_pbmac1_pbkdf2_key_gen(const char *pass, int passlen,
26 unsigned char *salt, int saltlen,
27 int id, int iter, int keylen,
28 unsigned char *out,
29 const EVP_MD *md_type);
30
PKCS12_mac_present(const PKCS12 * p12)31 int PKCS12_mac_present(const PKCS12 *p12)
32 {
33 return p12->mac ? 1 : 0;
34 }
35
PKCS12_get0_mac(const ASN1_OCTET_STRING ** pmac,const X509_ALGOR ** pmacalg,const ASN1_OCTET_STRING ** psalt,const ASN1_INTEGER ** piter,const PKCS12 * p12)36 void PKCS12_get0_mac(const ASN1_OCTET_STRING **pmac,
37 const X509_ALGOR **pmacalg,
38 const ASN1_OCTET_STRING **psalt,
39 const ASN1_INTEGER **piter,
40 const PKCS12 *p12)
41 {
42 if (p12->mac) {
43 X509_SIG_get0(p12->mac->dinfo, pmacalg, pmac);
44 if (psalt)
45 *psalt = p12->mac->salt;
46 if (piter)
47 *piter = p12->mac->iter;
48 } else {
49 if (pmac)
50 *pmac = NULL;
51 if (pmacalg)
52 *pmacalg = NULL;
53 if (psalt)
54 *psalt = NULL;
55 if (piter)
56 *piter = NULL;
57 }
58 }
59
60 #define TK26_MAC_KEY_LEN 32
61
pkcs12_gen_gost_mac_key(const char * pass,int passlen,const unsigned char * salt,int saltlen,int iter,int keylen,unsigned char * key,const EVP_MD * digest)62 static int pkcs12_gen_gost_mac_key(const char *pass, int passlen,
63 const unsigned char *salt, int saltlen,
64 int iter, int keylen, unsigned char *key,
65 const EVP_MD *digest)
66 {
67 unsigned char out[96];
68
69 if (keylen != TK26_MAC_KEY_LEN) {
70 return 0;
71 }
72
73 if (!PKCS5_PBKDF2_HMAC(pass, passlen, salt, saltlen, iter,
74 digest, sizeof(out), out)) {
75 return 0;
76 }
77 memcpy(key, out + sizeof(out) - TK26_MAC_KEY_LEN, TK26_MAC_KEY_LEN);
78 OPENSSL_cleanse(out, sizeof(out));
79 return 1;
80 }
81
PBMAC1_get1_pbkdf2_param(const X509_ALGOR * macalg)82 PBKDF2PARAM *PBMAC1_get1_pbkdf2_param(const X509_ALGOR *macalg)
83 {
84 PBMAC1PARAM *param = NULL;
85 PBKDF2PARAM *pbkdf2_param = NULL;
86 const ASN1_OBJECT *kdf_oid;
87
88 param = ASN1_TYPE_unpack_sequence(ASN1_ITEM_rptr(PBMAC1PARAM), macalg->parameter);
89 if (param == NULL) {
90 ERR_raise(ERR_LIB_PKCS12, ERR_R_PASSED_INVALID_ARGUMENT);
91 return NULL;
92 }
93
94 X509_ALGOR_get0(&kdf_oid, NULL, NULL, param->keyDerivationFunc);
95 if (OBJ_obj2nid(kdf_oid) != NID_id_pbkdf2) {
96 ERR_raise(ERR_LIB_PKCS12, ERR_R_PASSED_INVALID_ARGUMENT);
97 PBMAC1PARAM_free(param);
98 return NULL;
99 }
100
101 pbkdf2_param = ASN1_TYPE_unpack_sequence(ASN1_ITEM_rptr(PBKDF2PARAM),
102 param->keyDerivationFunc->parameter);
103 PBMAC1PARAM_free(param);
104
105 return pbkdf2_param;
106 }
107
PBMAC1_PBKDF2_HMAC(OSSL_LIB_CTX * ctx,const char * propq,const char * pass,int passlen,const X509_ALGOR * macalg,unsigned char * key)108 static int PBMAC1_PBKDF2_HMAC(OSSL_LIB_CTX *ctx, const char *propq,
109 const char *pass, int passlen,
110 const X509_ALGOR *macalg, unsigned char *key)
111 {
112 PBKDF2PARAM *pbkdf2_param = NULL;
113 const ASN1_OBJECT *kdf_hmac_oid;
114 int kdf_hmac_nid;
115 int ret = -1;
116 int keylen = 0;
117 EVP_MD *kdf_md = NULL;
118 const ASN1_OCTET_STRING *pbkdf2_salt = NULL;
119
120 pbkdf2_param = PBMAC1_get1_pbkdf2_param(macalg);
121 if (pbkdf2_param == NULL) {
122 ERR_raise(ERR_LIB_PKCS12, ERR_R_UNSUPPORTED);
123 goto err;
124 }
125 keylen = ASN1_INTEGER_get(pbkdf2_param->keylength);
126 pbkdf2_salt = pbkdf2_param->salt->value.octet_string;
127
128 if (pbkdf2_param->prf == NULL) {
129 kdf_hmac_nid = NID_hmacWithSHA1;
130 } else {
131 X509_ALGOR_get0(&kdf_hmac_oid, NULL, NULL, pbkdf2_param->prf);
132 kdf_hmac_nid = OBJ_obj2nid(kdf_hmac_oid);
133 }
134
135 kdf_md = EVP_MD_fetch(ctx, OBJ_nid2sn(ossl_hmac2mdnid(kdf_hmac_nid)), propq);
136 if (kdf_md == NULL) {
137 ERR_raise(ERR_LIB_PKCS12, ERR_R_FETCH_FAILED);
138 goto err;
139 }
140
141 if (PKCS5_PBKDF2_HMAC(pass, passlen, pbkdf2_salt->data, pbkdf2_salt->length,
142 ASN1_INTEGER_get(pbkdf2_param->iter), kdf_md, keylen, key) <= 0) {
143 ERR_raise(ERR_LIB_PKCS12, ERR_R_INTERNAL_ERROR);
144 goto err;
145 }
146 ret = keylen;
147
148 err:
149 EVP_MD_free(kdf_md);
150 PBKDF2PARAM_free(pbkdf2_param);
151
152 return ret;
153 }
154
155 /* Generate a MAC, also used for verification */
pkcs12_gen_mac(PKCS12 * p12,const char * pass,int passlen,unsigned char * mac,unsigned int * maclen,int pbmac1_md_nid,int pbmac1_kdf_nid,int (* pkcs12_key_gen)(const char * pass,int passlen,unsigned char * salt,int slen,int id,int iter,int n,unsigned char * out,const EVP_MD * md_type))156 static int pkcs12_gen_mac(PKCS12 *p12, const char *pass, int passlen,
157 unsigned char *mac, unsigned int *maclen,
158 int pbmac1_md_nid, int pbmac1_kdf_nid,
159 int (*pkcs12_key_gen)(const char *pass, int passlen,
160 unsigned char *salt, int slen,
161 int id, int iter, int n,
162 unsigned char *out,
163 const EVP_MD *md_type))
164 {
165 int ret = 0;
166 const EVP_MD *md;
167 EVP_MD *md_fetch;
168 HMAC_CTX *hmac = NULL;
169 unsigned char key[EVP_MAX_MD_SIZE], *salt;
170 int saltlen, iter;
171 char md_name[80];
172 int keylen = 0;
173 int md_nid = NID_undef;
174 const X509_ALGOR *macalg;
175 const ASN1_OBJECT *macoid;
176
177 if (!PKCS7_type_is_data(p12->authsafes)) {
178 ERR_raise(ERR_LIB_PKCS12, PKCS12_R_CONTENT_TYPE_NOT_DATA);
179 return 0;
180 }
181
182 if (p12->authsafes->d.data == NULL) {
183 ERR_raise(ERR_LIB_PKCS12, PKCS12_R_DECODE_ERROR);
184 return 0;
185 }
186
187 salt = p12->mac->salt->data;
188 saltlen = p12->mac->salt->length;
189 if (p12->mac->iter == NULL)
190 iter = 1;
191 else
192 iter = ASN1_INTEGER_get(p12->mac->iter);
193 X509_SIG_get0(p12->mac->dinfo, &macalg, NULL);
194 X509_ALGOR_get0(&macoid, NULL, NULL, macalg);
195 if (OBJ_obj2nid(macoid) == NID_pbmac1) {
196 if (OBJ_obj2txt(md_name, sizeof(md_name), OBJ_nid2obj(pbmac1_md_nid), 0) < 0)
197 return 0;
198 } else {
199 if (OBJ_obj2txt(md_name, sizeof(md_name), macoid, 0) < 0)
200 return 0;
201 }
202 (void)ERR_set_mark();
203 md = md_fetch = EVP_MD_fetch(p12->authsafes->ctx.libctx, md_name,
204 p12->authsafes->ctx.propq);
205 if (md == NULL)
206 md = EVP_get_digestbynid(OBJ_obj2nid(macoid));
207
208 if (md == NULL) {
209 (void)ERR_clear_last_mark();
210 ERR_raise(ERR_LIB_PKCS12, PKCS12_R_UNKNOWN_DIGEST_ALGORITHM);
211 return 0;
212 }
213 (void)ERR_pop_to_mark();
214
215 keylen = EVP_MD_get_size(md);
216 md_nid = EVP_MD_get_type(md);
217 if (keylen <= 0)
218 goto err;
219
220 /* For PBMAC1 we use a special keygen callback if not provided (e.g. on verification) */
221 if (pbmac1_md_nid != NID_undef && pkcs12_key_gen == NULL) {
222 keylen = PBMAC1_PBKDF2_HMAC(p12->authsafes->ctx.libctx, p12->authsafes->ctx.propq,
223 pass, passlen, macalg, key);
224 if (keylen < 0)
225 goto err;
226 } else if ((md_nid == NID_id_GostR3411_94
227 || md_nid == NID_id_GostR3411_2012_256
228 || md_nid == NID_id_GostR3411_2012_512)
229 && ossl_safe_getenv("LEGACY_GOST_PKCS12") == NULL) {
230 keylen = TK26_MAC_KEY_LEN;
231 if (!pkcs12_gen_gost_mac_key(pass, passlen, salt, saltlen, iter,
232 keylen, key, md)) {
233 ERR_raise(ERR_LIB_PKCS12, PKCS12_R_KEY_GEN_ERROR);
234 goto err;
235 }
236 } else {
237 EVP_MD *hmac_md = (EVP_MD *)md;
238 int fetched = 0;
239
240 if (pbmac1_kdf_nid != NID_undef) {
241 char hmac_md_name[128];
242
243 if (OBJ_obj2txt(hmac_md_name, sizeof(hmac_md_name), OBJ_nid2obj(pbmac1_kdf_nid), 0) < 0)
244 goto err;
245 hmac_md = EVP_MD_fetch(NULL, hmac_md_name, NULL);
246 if (hmac_md == NULL)
247 goto err;
248 fetched = 1;
249 }
250 if (pkcs12_key_gen != NULL) {
251 int res = (*pkcs12_key_gen)(pass, passlen, salt, saltlen, PKCS12_MAC_ID,
252 iter, keylen, key, hmac_md);
253
254 if (fetched)
255 EVP_MD_free(hmac_md);
256 if (res != 1) {
257 ERR_raise(ERR_LIB_PKCS12, PKCS12_R_KEY_GEN_ERROR);
258 goto err;
259 }
260 } else {
261 if (fetched)
262 EVP_MD_free(hmac_md);
263 /* Default to UTF-8 password */
264 if (!PKCS12_key_gen_utf8_ex(pass, passlen, salt, saltlen, PKCS12_MAC_ID,
265 iter, keylen, key, md,
266 p12->authsafes->ctx.libctx, p12->authsafes->ctx.propq)) {
267 ERR_raise(ERR_LIB_PKCS12, PKCS12_R_KEY_GEN_ERROR);
268 goto err;
269 }
270 }
271 }
272 if ((hmac = HMAC_CTX_new()) == NULL
273 || !HMAC_Init_ex(hmac, key, keylen, md, NULL)
274 || !HMAC_Update(hmac, p12->authsafes->d.data->data,
275 p12->authsafes->d.data->length)
276 || !HMAC_Final(hmac, mac, maclen)) {
277 goto err;
278 }
279 ret = 1;
280
281 err:
282 OPENSSL_cleanse(key, sizeof(key));
283 HMAC_CTX_free(hmac);
284 EVP_MD_free(md_fetch);
285 return ret;
286 }
287
PKCS12_gen_mac(PKCS12 * p12,const char * pass,int passlen,unsigned char * mac,unsigned int * maclen)288 int PKCS12_gen_mac(PKCS12 *p12, const char *pass, int passlen,
289 unsigned char *mac, unsigned int *maclen)
290 {
291 return pkcs12_gen_mac(p12, pass, passlen, mac, maclen, NID_undef, NID_undef, NULL);
292 }
293
294 /* Verify the mac */
PKCS12_verify_mac(PKCS12 * p12,const char * pass,int passlen)295 int PKCS12_verify_mac(PKCS12 *p12, const char *pass, int passlen)
296 {
297 unsigned char mac[EVP_MAX_MD_SIZE];
298 unsigned int maclen;
299 const ASN1_OCTET_STRING *macoct;
300 const X509_ALGOR *macalg;
301 const ASN1_OBJECT *macoid;
302
303 if (p12->mac == NULL) {
304 ERR_raise(ERR_LIB_PKCS12, PKCS12_R_MAC_ABSENT);
305 return 0;
306 }
307
308 X509_SIG_get0(p12->mac->dinfo, &macalg, NULL);
309 X509_ALGOR_get0(&macoid, NULL, NULL, macalg);
310 if (OBJ_obj2nid(macoid) == NID_pbmac1) {
311 PBMAC1PARAM *param = NULL;
312 const ASN1_OBJECT *hmac_oid;
313 int md_nid = NID_undef;
314
315 param = ASN1_TYPE_unpack_sequence(ASN1_ITEM_rptr(PBMAC1PARAM), macalg->parameter);
316 if (param == NULL) {
317 ERR_raise(ERR_LIB_PKCS12, ERR_R_UNSUPPORTED);
318 return 0;
319 }
320 X509_ALGOR_get0(&hmac_oid, NULL, NULL, param->messageAuthScheme);
321 md_nid = ossl_hmac2mdnid(OBJ_obj2nid(hmac_oid));
322
323 if (!pkcs12_gen_mac(p12, pass, passlen, mac, &maclen, md_nid, NID_undef, NULL)) {
324 ERR_raise(ERR_LIB_PKCS12, PKCS12_R_MAC_GENERATION_ERROR);
325 PBMAC1PARAM_free(param);
326 return 0;
327 }
328 PBMAC1PARAM_free(param);
329 } else {
330 if (!pkcs12_gen_mac(p12, pass, passlen, mac, &maclen, NID_undef, NID_undef, NULL)) {
331 ERR_raise(ERR_LIB_PKCS12, PKCS12_R_MAC_GENERATION_ERROR);
332 return 0;
333 }
334 }
335 X509_SIG_get0(p12->mac->dinfo, NULL, &macoct);
336 if ((maclen != (unsigned int)ASN1_STRING_length(macoct))
337 || CRYPTO_memcmp(mac, ASN1_STRING_get0_data(macoct), maclen) != 0)
338 return 0;
339
340 return 1;
341 }
342
343 /* Set a mac */
PKCS12_set_mac(PKCS12 * p12,const char * pass,int passlen,unsigned char * salt,int saltlen,int iter,const EVP_MD * md_type)344 int PKCS12_set_mac(PKCS12 *p12, const char *pass, int passlen,
345 unsigned char *salt, int saltlen, int iter,
346 const EVP_MD *md_type)
347 {
348 unsigned char mac[EVP_MAX_MD_SIZE];
349 unsigned int maclen;
350 ASN1_OCTET_STRING *macoct;
351
352 if (md_type == NULL)
353 /* No need to do a fetch as the md_type is used only to get a NID */
354 md_type = EVP_sha256();
355 if (!iter)
356 iter = PKCS12_DEFAULT_ITER;
357 if (PKCS12_setup_mac(p12, iter, salt, saltlen, md_type) == PKCS12_ERROR) {
358 ERR_raise(ERR_LIB_PKCS12, PKCS12_R_MAC_SETUP_ERROR);
359 return 0;
360 }
361 /*
362 * Note that output mac is forced to UTF-8...
363 */
364 if (!pkcs12_gen_mac(p12, pass, passlen, mac, &maclen, NID_undef, NID_undef, NULL)) {
365 ERR_raise(ERR_LIB_PKCS12, PKCS12_R_MAC_GENERATION_ERROR);
366 return 0;
367 }
368 X509_SIG_getm(p12->mac->dinfo, NULL, &macoct);
369 if (!ASN1_OCTET_STRING_set(macoct, mac, maclen)) {
370 ERR_raise(ERR_LIB_PKCS12, PKCS12_R_MAC_STRING_SET_ERROR);
371 return 0;
372 }
373 return 1;
374 }
375
pkcs12_pbmac1_pbkdf2_key_gen(const char * pass,int passlen,unsigned char * salt,int saltlen,int id,int iter,int keylen,unsigned char * out,const EVP_MD * md_type)376 static int pkcs12_pbmac1_pbkdf2_key_gen(const char *pass, int passlen,
377 unsigned char *salt, int saltlen,
378 int id, int iter, int keylen,
379 unsigned char *out,
380 const EVP_MD *md_type)
381 {
382 return PKCS5_PBKDF2_HMAC(pass, passlen, salt, saltlen, iter,
383 md_type, keylen, out);
384 }
385
pkcs12_setup_mac(PKCS12 * p12,int iter,unsigned char * salt,int saltlen,int nid)386 static int pkcs12_setup_mac(PKCS12 *p12, int iter, unsigned char *salt, int saltlen,
387 int nid)
388 {
389 X509_ALGOR *macalg;
390
391 PKCS12_MAC_DATA_free(p12->mac);
392 p12->mac = NULL;
393
394 if ((p12->mac = PKCS12_MAC_DATA_new()) == NULL)
395 return PKCS12_ERROR;
396 if (iter > 1) {
397 if ((p12->mac->iter = ASN1_INTEGER_new()) == NULL) {
398 ERR_raise(ERR_LIB_PKCS12, ERR_R_ASN1_LIB);
399 return 0;
400 }
401 if (!ASN1_INTEGER_set(p12->mac->iter, iter)) {
402 ERR_raise(ERR_LIB_PKCS12, ERR_R_ASN1_LIB);
403 return 0;
404 }
405 }
406 if (saltlen == 0)
407 saltlen = PKCS12_SALT_LEN;
408 else if (saltlen < 0)
409 return 0;
410 if ((p12->mac->salt->data = OPENSSL_malloc(saltlen)) == NULL)
411 return 0;
412 p12->mac->salt->length = saltlen;
413 if (salt == NULL) {
414 if (RAND_bytes_ex(p12->authsafes->ctx.libctx, p12->mac->salt->data,
415 (size_t)saltlen, 0) <= 0)
416 return 0;
417 } else {
418 memcpy(p12->mac->salt->data, salt, saltlen);
419 }
420 X509_SIG_getm(p12->mac->dinfo, &macalg, NULL);
421 if (!X509_ALGOR_set0(macalg, OBJ_nid2obj(nid), V_ASN1_NULL, NULL)) {
422 ERR_raise(ERR_LIB_PKCS12, ERR_R_ASN1_LIB);
423 return 0;
424 }
425
426 return 1;
427 }
428
429 /* Set up a mac structure */
PKCS12_setup_mac(PKCS12 * p12,int iter,unsigned char * salt,int saltlen,const EVP_MD * md_type)430 int PKCS12_setup_mac(PKCS12 *p12, int iter, unsigned char *salt, int saltlen,
431 const EVP_MD *md_type)
432 {
433 return pkcs12_setup_mac(p12, iter, salt, saltlen, EVP_MD_get_type(md_type));
434 }
435
PKCS12_set_pbmac1_pbkdf2(PKCS12 * p12,const char * pass,int passlen,unsigned char * salt,int saltlen,int iter,const EVP_MD * md_type,const char * prf_md_name)436 int PKCS12_set_pbmac1_pbkdf2(PKCS12 *p12, const char *pass, int passlen,
437 unsigned char *salt, int saltlen, int iter,
438 const EVP_MD *md_type, const char *prf_md_name)
439 {
440 unsigned char mac[EVP_MAX_MD_SIZE];
441 unsigned int maclen;
442 ASN1_OCTET_STRING *macoct;
443 X509_ALGOR *alg = NULL;
444 int ret = 0;
445 int prf_md_nid = NID_undef, prf_nid = NID_undef, hmac_nid;
446 unsigned char *known_salt = NULL;
447 int keylen = 0;
448 PBMAC1PARAM *param = NULL;
449 X509_ALGOR *hmac_alg = NULL, *macalg = NULL;
450
451 if (md_type == NULL)
452 /* No need to do a fetch as the md_type is used only to get a NID */
453 md_type = EVP_sha256();
454
455 if (prf_md_name == NULL)
456 prf_md_nid = EVP_MD_get_type(md_type);
457 else
458 prf_md_nid = OBJ_txt2nid(prf_md_name);
459
460 if (iter == 0)
461 iter = PKCS12_DEFAULT_ITER;
462
463 keylen = EVP_MD_get_size(md_type);
464
465 prf_nid = ossl_md2hmacnid(prf_md_nid);
466 hmac_nid = ossl_md2hmacnid(EVP_MD_get_type(md_type));
467
468 if (prf_nid == NID_undef || hmac_nid == NID_undef) {
469 ERR_raise(ERR_LIB_PKCS12, PKCS12_R_UNKNOWN_DIGEST_ALGORITHM);
470 goto err;
471 }
472
473 if (salt == NULL) {
474 known_salt = OPENSSL_malloc(saltlen);
475 if (known_salt == NULL)
476 goto err;
477
478 if (RAND_bytes_ex(NULL, known_salt, saltlen, 0) <= 0) {
479 ERR_raise(ERR_LIB_PKCS12, ERR_R_RAND_LIB);
480 goto err;
481 }
482 }
483
484 param = PBMAC1PARAM_new();
485 hmac_alg = X509_ALGOR_new();
486 alg = PKCS5_pbkdf2_set(iter, salt ? salt : known_salt, saltlen, prf_nid, keylen);
487 if (param == NULL || hmac_alg == NULL || alg == NULL)
488 goto err;
489
490 if (pkcs12_setup_mac(p12, iter, salt ? salt : known_salt, saltlen,
491 NID_pbmac1) == PKCS12_ERROR) {
492 ERR_raise(ERR_LIB_PKCS12, PKCS12_R_MAC_SETUP_ERROR);
493 goto err;
494 }
495
496 if (!X509_ALGOR_set0(hmac_alg, OBJ_nid2obj(hmac_nid), V_ASN1_NULL, NULL)) {
497 ERR_raise(ERR_LIB_PKCS12, PKCS12_R_MAC_SETUP_ERROR);
498 goto err;
499 }
500
501 X509_ALGOR_free(param->keyDerivationFunc);
502 X509_ALGOR_free(param->messageAuthScheme);
503 param->keyDerivationFunc = alg;
504 param->messageAuthScheme = hmac_alg;
505
506 X509_SIG_getm(p12->mac->dinfo, &macalg, &macoct);
507 if (!ASN1_TYPE_pack_sequence(ASN1_ITEM_rptr(PBMAC1PARAM), param, &macalg->parameter))
508 goto err;
509
510 /*
511 * Note that output mac is forced to UTF-8...
512 */
513 if (!pkcs12_gen_mac(p12, pass, passlen, mac, &maclen,
514 EVP_MD_get_type(md_type), prf_md_nid,
515 pkcs12_pbmac1_pbkdf2_key_gen)) {
516 ERR_raise(ERR_LIB_PKCS12, PKCS12_R_MAC_GENERATION_ERROR);
517 goto err;
518 }
519 if (!ASN1_OCTET_STRING_set(macoct, mac, maclen)) {
520 ERR_raise(ERR_LIB_PKCS12, PKCS12_R_MAC_STRING_SET_ERROR);
521 goto err;
522 }
523 ret = 1;
524
525 err:
526 PBMAC1PARAM_free(param);
527 OPENSSL_free(known_salt);
528 return ret;
529 }
530
