1 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
2 * project 1999.
3 */
4 /* ====================================================================
5 * Copyright (c) 1999 The OpenSSL Project. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 *
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in
16 * the documentation and/or other materials provided with the
17 * distribution.
18 *
19 * 3. All advertising materials mentioning features or use of this
20 * software must display the following acknowledgment:
21 * "This product includes software developed by the OpenSSL Project
22 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
23 *
24 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
25 * endorse or promote products derived from this software without
26 * prior written permission. For written permission, please contact
27 * licensing@OpenSSL.org.
28 *
29 * 5. Products derived from this software may not be called "OpenSSL"
30 * nor may "OpenSSL" appear in their names without prior written
31 * permission of the OpenSSL Project.
32 *
33 * 6. Redistributions of any form whatsoever must retain the following
34 * acknowledgment:
35 * "This product includes software developed by the OpenSSL Project
36 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
37 *
38 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
39 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
40 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
41 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
42 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
43 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
44 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
45 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
46 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
47 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
48 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
49 * OF THE POSSIBILITY OF SUCH DAMAGE.
50 * ====================================================================
51 *
52 * This product includes cryptographic software written by Eric Young
53 * (eay@cryptsoft.com). This product includes software written by Tim
54 * Hudson (tjh@cryptsoft.com). */
55
56 #include <openssl/pkcs8.h>
57
58 #include <assert.h>
59 #include <limits.h>
60 #include <string.h>
61
62 #include <openssl/asn1.h>
63 #include <openssl/bn.h>
64 #include <openssl/buf.h>
65 #include <openssl/cipher.h>
66 #include <openssl/digest.h>
67 #include <openssl/err.h>
68 #include <openssl/hmac.h>
69 #include <openssl/mem.h>
70 #include <openssl/x509.h>
71
72 #include "../bytestring/internal.h"
73 #include "../evp/internal.h"
74
75
76 #define PKCS12_KEY_ID 1
77 #define PKCS12_IV_ID 2
78 #define PKCS12_MAC_ID 3
79
ascii_to_ucs2(const char * ascii,size_t ascii_len,uint8_t ** out,size_t * out_len)80 static int ascii_to_ucs2(const char *ascii, size_t ascii_len,
81 uint8_t **out, size_t *out_len) {
82 uint8_t *unitmp;
83 size_t ulen, i;
84
85 ulen = ascii_len * 2 + 2;
86 if (ulen < ascii_len) {
87 return 0;
88 }
89 unitmp = OPENSSL_malloc(ulen);
90 if (unitmp == NULL) {
91 return 0;
92 }
93 for (i = 0; i < ulen - 2; i += 2) {
94 unitmp[i] = 0;
95 unitmp[i + 1] = ascii[i >> 1];
96 }
97
98 /* Make result double null terminated */
99 unitmp[ulen - 2] = 0;
100 unitmp[ulen - 1] = 0;
101 *out_len = ulen;
102 *out = unitmp;
103 return 1;
104 }
105
pkcs12_key_gen_raw(const uint8_t * pass_raw,size_t pass_raw_len,const uint8_t * salt,size_t salt_len,int id,int iterations,size_t out_len,uint8_t * out,const EVP_MD * md_type)106 static int pkcs12_key_gen_raw(const uint8_t *pass_raw, size_t pass_raw_len,
107 const uint8_t *salt, size_t salt_len,
108 int id, int iterations,
109 size_t out_len, uint8_t *out,
110 const EVP_MD *md_type) {
111 uint8_t *B, *D, *I, *p, *Ai;
112 int Slen, Plen, Ilen, Ijlen;
113 int i, j, v;
114 size_t u;
115 int ret = 0;
116 BIGNUM *Ij, *Bpl1; /* These hold Ij and B + 1 */
117 EVP_MD_CTX ctx;
118
119 EVP_MD_CTX_init(&ctx);
120 v = EVP_MD_block_size(md_type);
121 u = EVP_MD_size(md_type);
122 D = OPENSSL_malloc(v);
123 Ai = OPENSSL_malloc(u);
124 B = OPENSSL_malloc(v + 1);
125 Slen = v * ((salt_len + v - 1) / v);
126 if (pass_raw_len) {
127 Plen = v * ((pass_raw_len + v - 1) / v);
128 } else {
129 Plen = 0;
130 }
131 Ilen = Slen + Plen;
132 I = OPENSSL_malloc(Ilen);
133 Ij = BN_new();
134 Bpl1 = BN_new();
135 if (!D || !Ai || !B || !I || !Ij || !Bpl1) {
136 goto err;
137 }
138 for (i = 0; i < v; i++) {
139 D[i] = id;
140 }
141 p = I;
142 for (i = 0; i < Slen; i++) {
143 *p++ = salt[i % salt_len];
144 }
145 for (i = 0; i < Plen; i++) {
146 *p++ = pass_raw[i % pass_raw_len];
147 }
148 for (;;) {
149 if (!EVP_DigestInit_ex(&ctx, md_type, NULL) ||
150 !EVP_DigestUpdate(&ctx, D, v) ||
151 !EVP_DigestUpdate(&ctx, I, Ilen) ||
152 !EVP_DigestFinal_ex(&ctx, Ai, NULL)) {
153 goto err;
154 }
155 for (j = 1; j < iterations; j++) {
156 if (!EVP_DigestInit_ex(&ctx, md_type, NULL) ||
157 !EVP_DigestUpdate(&ctx, Ai, u) ||
158 !EVP_DigestFinal_ex(&ctx, Ai, NULL)) {
159 goto err;
160 }
161 }
162 memcpy(out, Ai, out_len < u ? out_len : u);
163 if (u >= out_len) {
164 ret = 1;
165 goto end;
166 }
167 out_len -= u;
168 out += u;
169 for (j = 0; j < v; j++) {
170 B[j] = Ai[j % u];
171 }
172 /* Work out B + 1 first then can use B as tmp space */
173 if (!BN_bin2bn(B, v, Bpl1) ||
174 !BN_add_word(Bpl1, 1)) {
175 goto err;
176 }
177 for (j = 0; j < Ilen; j += v) {
178 if (!BN_bin2bn(I + j, v, Ij) ||
179 !BN_add(Ij, Ij, Bpl1) ||
180 !BN_bn2bin(Ij, B)) {
181 goto err;
182 }
183 Ijlen = BN_num_bytes(Ij);
184 /* If more than 2^(v*8) - 1 cut off MSB */
185 if (Ijlen > v) {
186 if (!BN_bn2bin(Ij, B)) {
187 goto err;
188 }
189 memcpy(I + j, B + 1, v);
190 /* If less than v bytes pad with zeroes */
191 } else if (Ijlen < v) {
192 memset(I + j, 0, v - Ijlen);
193 if (!BN_bn2bin(Ij, I + j + v - Ijlen)) {
194 goto err;
195 }
196 } else if (!BN_bn2bin(Ij, I + j)) {
197 goto err;
198 }
199 }
200 }
201
202 err:
203 OPENSSL_PUT_ERROR(PKCS8, pkcs12_key_gen_raw, ERR_R_MALLOC_FAILURE);
204
205 end:
206 OPENSSL_free(Ai);
207 OPENSSL_free(B);
208 OPENSSL_free(D);
209 OPENSSL_free(I);
210 BN_free(Ij);
211 BN_free(Bpl1);
212 EVP_MD_CTX_cleanup(&ctx);
213
214 return ret;
215 }
216
pkcs12_pbe_keyivgen(EVP_CIPHER_CTX * ctx,const uint8_t * pass_raw,size_t pass_raw_len,ASN1_TYPE * param,const EVP_CIPHER * cipher,const EVP_MD * md,int is_encrypt)217 static int pkcs12_pbe_keyivgen(EVP_CIPHER_CTX *ctx, const uint8_t *pass_raw,
218 size_t pass_raw_len, ASN1_TYPE *param,
219 const EVP_CIPHER *cipher, const EVP_MD *md,
220 int is_encrypt) {
221 PBEPARAM *pbe;
222 int salt_len, iterations, ret;
223 uint8_t *salt;
224 const uint8_t *pbuf;
225 uint8_t key[EVP_MAX_KEY_LENGTH], iv[EVP_MAX_IV_LENGTH];
226
227 /* Extract useful info from parameter */
228 if (param == NULL || param->type != V_ASN1_SEQUENCE ||
229 param->value.sequence == NULL) {
230 OPENSSL_PUT_ERROR(PKCS8, pkcs12_pbe_keyivgen, PKCS8_R_DECODE_ERROR);
231 return 0;
232 }
233
234 pbuf = param->value.sequence->data;
235 pbe = d2i_PBEPARAM(NULL, &pbuf, param->value.sequence->length);
236 if (pbe == NULL) {
237 OPENSSL_PUT_ERROR(PKCS8, pkcs12_pbe_keyivgen, PKCS8_R_DECODE_ERROR);
238 return 0;
239 }
240
241 if (!pbe->iter) {
242 iterations = 1;
243 } else {
244 iterations = ASN1_INTEGER_get(pbe->iter);
245 }
246 salt = pbe->salt->data;
247 salt_len = pbe->salt->length;
248 if (!pkcs12_key_gen_raw(pass_raw, pass_raw_len, salt, salt_len, PKCS12_KEY_ID,
249 iterations, EVP_CIPHER_key_length(cipher), key, md)) {
250 OPENSSL_PUT_ERROR(PKCS8, pkcs12_pbe_keyivgen, PKCS8_R_KEY_GEN_ERROR);
251 PBEPARAM_free(pbe);
252 return 0;
253 }
254 if (!pkcs12_key_gen_raw(pass_raw, pass_raw_len, salt, salt_len, PKCS12_IV_ID,
255 iterations, EVP_CIPHER_iv_length(cipher), iv, md)) {
256 OPENSSL_PUT_ERROR(PKCS8, pkcs12_pbe_keyivgen, PKCS8_R_KEY_GEN_ERROR);
257 PBEPARAM_free(pbe);
258 return 0;
259 }
260 PBEPARAM_free(pbe);
261 ret = EVP_CipherInit_ex(ctx, cipher, NULL, key, iv, is_encrypt);
262 OPENSSL_cleanse(key, EVP_MAX_KEY_LENGTH);
263 OPENSSL_cleanse(iv, EVP_MAX_IV_LENGTH);
264 return ret;
265 }
266
267 typedef int (*keygen_func)(EVP_CIPHER_CTX *ctx, const uint8_t *pass_raw,
268 size_t pass_raw_len, ASN1_TYPE *param,
269 const EVP_CIPHER *cipher, const EVP_MD *md,
270 int is_encrypt);
271
272 struct pbe_suite {
273 int pbe_nid;
274 const EVP_CIPHER* (*cipher_func)(void);
275 const EVP_MD* (*md_func)(void);
276 keygen_func keygen;
277 };
278
279 static const struct pbe_suite kBuiltinPBE[] = {
280 {
281 NID_pbe_WithSHA1And40BitRC2_CBC, EVP_rc2_40_cbc, EVP_sha1, pkcs12_pbe_keyivgen,
282 },
283 {
284 NID_pbe_WithSHA1And128BitRC4, EVP_rc4, EVP_sha1, pkcs12_pbe_keyivgen,
285 },
286 {
287 NID_pbe_WithSHA1And3_Key_TripleDES_CBC, EVP_des_ede3_cbc, EVP_sha1,
288 pkcs12_pbe_keyivgen,
289 },
290 };
291
pbe_cipher_init(ASN1_OBJECT * pbe_obj,const uint8_t * pass_raw,size_t pass_raw_len,ASN1_TYPE * param,EVP_CIPHER_CTX * ctx,int is_encrypt)292 static int pbe_cipher_init(ASN1_OBJECT *pbe_obj,
293 const uint8_t *pass_raw, size_t pass_raw_len,
294 ASN1_TYPE *param,
295 EVP_CIPHER_CTX *ctx, int is_encrypt) {
296 const EVP_CIPHER *cipher;
297 const EVP_MD *md;
298 unsigned i;
299
300 const struct pbe_suite *suite = NULL;
301 const int pbe_nid = OBJ_obj2nid(pbe_obj);
302
303 for (i = 0; i < sizeof(kBuiltinPBE) / sizeof(struct pbe_suite); i++) {
304 if (kBuiltinPBE[i].pbe_nid == pbe_nid) {
305 suite = &kBuiltinPBE[i];
306 break;
307 }
308 }
309
310 if (suite == NULL) {
311 char obj_str[80];
312 OPENSSL_PUT_ERROR(PKCS8, pbe_cipher_init, PKCS8_R_UNKNOWN_ALGORITHM);
313 if (!pbe_obj) {
314 strncpy(obj_str, "NULL", sizeof(obj_str));
315 } else {
316 i2t_ASN1_OBJECT(obj_str, sizeof(obj_str), pbe_obj);
317 }
318 ERR_add_error_data(2, "TYPE=", obj_str);
319 return 0;
320 }
321
322 if (suite->cipher_func == NULL) {
323 cipher = NULL;
324 } else {
325 cipher = suite->cipher_func();
326 if (!cipher) {
327 OPENSSL_PUT_ERROR(PKCS8, pbe_cipher_init, PKCS8_R_UNKNOWN_CIPHER);
328 return 0;
329 }
330 }
331
332 if (suite->md_func == NULL) {
333 md = NULL;
334 } else {
335 md = suite->md_func();
336 if (!md) {
337 OPENSSL_PUT_ERROR(PKCS8, pbe_cipher_init, PKCS8_R_UNKNOWN_DIGEST);
338 return 0;
339 }
340 }
341
342 if (!suite->keygen(ctx, pass_raw, pass_raw_len, param, cipher, md,
343 is_encrypt)) {
344 OPENSSL_PUT_ERROR(PKCS8, pbe_cipher_init, PKCS8_R_KEYGEN_FAILURE);
345 return 0;
346 }
347
348 return 1;
349 }
350
pbe_crypt(const X509_ALGOR * algor,const uint8_t * pass_raw,size_t pass_raw_len,const uint8_t * in,size_t in_len,uint8_t ** out,size_t * out_len,int is_encrypt)351 static int pbe_crypt(const X509_ALGOR *algor,
352 const uint8_t *pass_raw, size_t pass_raw_len,
353 const uint8_t *in, size_t in_len,
354 uint8_t **out, size_t *out_len,
355 int is_encrypt) {
356 uint8_t *buf;
357 int n, ret = 0;
358 EVP_CIPHER_CTX ctx;
359 unsigned block_size;
360
361 EVP_CIPHER_CTX_init(&ctx);
362
363 if (!pbe_cipher_init(algor->algorithm, pass_raw, pass_raw_len,
364 algor->parameter, &ctx, is_encrypt)) {
365 OPENSSL_PUT_ERROR(PKCS8, pbe_crypt, PKCS8_R_UNKNOWN_CIPHER_ALGORITHM);
366 return 0;
367 }
368 block_size = EVP_CIPHER_CTX_block_size(&ctx);
369
370 if (in_len + block_size < in_len) {
371 OPENSSL_PUT_ERROR(PKCS8, pbe_crypt, PKCS8_R_TOO_LONG);
372 goto err;
373 }
374
375 buf = OPENSSL_malloc(in_len + block_size);
376 if (buf == NULL) {
377 OPENSSL_PUT_ERROR(PKCS8, pbe_crypt, ERR_R_MALLOC_FAILURE);
378 goto err;
379 }
380
381 if (!EVP_CipherUpdate(&ctx, buf, &n, in, in_len)) {
382 OPENSSL_free(buf);
383 OPENSSL_PUT_ERROR(PKCS8, pbe_crypt, ERR_R_EVP_LIB);
384 goto err;
385 }
386 *out_len = n;
387
388 if (!EVP_CipherFinal_ex(&ctx, buf + n, &n)) {
389 OPENSSL_free(buf);
390 OPENSSL_PUT_ERROR(PKCS8, pbe_crypt, ERR_R_EVP_LIB);
391 goto err;
392 }
393 *out_len += n;
394 *out = buf;
395 ret = 1;
396
397 err:
398 EVP_CIPHER_CTX_cleanup(&ctx);
399 return ret;
400 }
401
pkcs12_item_decrypt_d2i(X509_ALGOR * algor,const ASN1_ITEM * it,const uint8_t * pass_raw,size_t pass_raw_len,ASN1_OCTET_STRING * oct)402 static void *pkcs12_item_decrypt_d2i(X509_ALGOR *algor, const ASN1_ITEM *it,
403 const uint8_t *pass_raw,
404 size_t pass_raw_len,
405 ASN1_OCTET_STRING *oct) {
406 uint8_t *out;
407 const uint8_t *p;
408 void *ret;
409 size_t out_len;
410
411 if (!pbe_crypt(algor, pass_raw, pass_raw_len, oct->data, oct->length,
412 &out, &out_len, 0 /* decrypt */)) {
413 OPENSSL_PUT_ERROR(PKCS8, pkcs12_item_decrypt_d2i, PKCS8_R_CRYPT_ERROR);
414 return NULL;
415 }
416 p = out;
417 ret = ASN1_item_d2i(NULL, &p, out_len, it);
418 OPENSSL_cleanse(out, out_len);
419 if (!ret) {
420 OPENSSL_PUT_ERROR(PKCS8, pkcs12_item_decrypt_d2i, PKCS8_R_DECODE_ERROR);
421 }
422 OPENSSL_free(out);
423 return ret;
424 }
425
PKCS8_decrypt(X509_SIG * pkcs8,const char * pass,int pass_len)426 PKCS8_PRIV_KEY_INFO *PKCS8_decrypt(X509_SIG *pkcs8, const char *pass,
427 int pass_len) {
428 uint8_t *pass_raw = NULL;
429 size_t pass_raw_len = 0;
430 PKCS8_PRIV_KEY_INFO *ret;
431
432 if (pass) {
433 if (pass_len == -1) {
434 pass_len = strlen(pass);
435 }
436 if (!ascii_to_ucs2(pass, pass_len, &pass_raw, &pass_raw_len)) {
437 OPENSSL_PUT_ERROR(PKCS8, PKCS8_decrypt, PKCS8_R_DECODE_ERROR);
438 return NULL;
439 }
440 }
441
442 ret = PKCS8_decrypt_pbe(pkcs8, pass_raw, pass_raw_len);
443
444 if (pass_raw) {
445 OPENSSL_cleanse(pass_raw, pass_raw_len);
446 OPENSSL_free(pass_raw);
447 }
448 return ret;
449 }
450
PKCS8_decrypt_pbe(X509_SIG * pkcs8,const uint8_t * pass_raw,size_t pass_raw_len)451 PKCS8_PRIV_KEY_INFO *PKCS8_decrypt_pbe(X509_SIG *pkcs8, const uint8_t *pass_raw,
452 size_t pass_raw_len) {
453 return pkcs12_item_decrypt_d2i(pkcs8->algor,
454 ASN1_ITEM_rptr(PKCS8_PRIV_KEY_INFO), pass_raw,
455 pass_raw_len, pkcs8->digest);
456 }
457
pkcs12_item_i2d_encrypt(X509_ALGOR * algor,const ASN1_ITEM * it,const uint8_t * pass_raw,size_t pass_raw_len,void * obj)458 static ASN1_OCTET_STRING *pkcs12_item_i2d_encrypt(X509_ALGOR *algor,
459 const ASN1_ITEM *it,
460 const uint8_t *pass_raw,
461 size_t pass_raw_len, void *obj) {
462 ASN1_OCTET_STRING *oct;
463 uint8_t *in = NULL;
464 int in_len;
465 size_t crypt_len;
466
467 oct = M_ASN1_OCTET_STRING_new();
468 if (oct == NULL) {
469 OPENSSL_PUT_ERROR(PKCS8, pkcs12_item_i2d_encrypt, ERR_R_MALLOC_FAILURE);
470 return NULL;
471 }
472 in_len = ASN1_item_i2d(obj, &in, it);
473 if (!in) {
474 OPENSSL_PUT_ERROR(PKCS8, pkcs12_item_i2d_encrypt, PKCS8_R_ENCODE_ERROR);
475 return NULL;
476 }
477 if (!pbe_crypt(algor, pass_raw, pass_raw_len, in, in_len, &oct->data, &crypt_len,
478 1 /* encrypt */)) {
479 OPENSSL_PUT_ERROR(PKCS8, pkcs12_item_i2d_encrypt, PKCS8_R_ENCRYPT_ERROR);
480 OPENSSL_free(in);
481 return NULL;
482 }
483 oct->length = crypt_len;
484 OPENSSL_cleanse(in, in_len);
485 OPENSSL_free(in);
486 return oct;
487 }
488
PKCS8_encrypt(int pbe_nid,const EVP_CIPHER * cipher,const char * pass,int pass_len,uint8_t * salt,size_t salt_len,int iterations,PKCS8_PRIV_KEY_INFO * p8inf)489 X509_SIG *PKCS8_encrypt(int pbe_nid, const EVP_CIPHER *cipher, const char *pass,
490 int pass_len, uint8_t *salt, size_t salt_len,
491 int iterations, PKCS8_PRIV_KEY_INFO *p8inf) {
492 uint8_t *pass_raw = NULL;
493 size_t pass_raw_len = 0;
494 X509_SIG *ret;
495
496 if (pass) {
497 if (pass_len == -1) {
498 pass_len = strlen(pass);
499 }
500 if (!ascii_to_ucs2(pass, pass_len, &pass_raw, &pass_raw_len)) {
501 OPENSSL_PUT_ERROR(PKCS8, PKCS8_encrypt, PKCS8_R_DECODE_ERROR);
502 return NULL;
503 }
504 }
505
506 ret = PKCS8_encrypt_pbe(pbe_nid, pass_raw, pass_raw_len,
507 salt, salt_len, iterations, p8inf);
508
509 if (pass_raw) {
510 OPENSSL_cleanse(pass_raw, pass_raw_len);
511 OPENSSL_free(pass_raw);
512 }
513 return ret;
514 }
515
PKCS8_encrypt_pbe(int pbe_nid,const uint8_t * pass_raw,size_t pass_raw_len,uint8_t * salt,size_t salt_len,int iterations,PKCS8_PRIV_KEY_INFO * p8inf)516 X509_SIG *PKCS8_encrypt_pbe(int pbe_nid,
517 const uint8_t *pass_raw, size_t pass_raw_len,
518 uint8_t *salt, size_t salt_len,
519 int iterations, PKCS8_PRIV_KEY_INFO *p8inf) {
520 X509_SIG *pkcs8 = NULL;
521 X509_ALGOR *pbe;
522
523 pkcs8 = X509_SIG_new();
524 if (pkcs8 == NULL) {
525 OPENSSL_PUT_ERROR(PKCS8, PKCS8_encrypt_pbe, ERR_R_MALLOC_FAILURE);
526 goto err;
527 }
528
529 pbe = PKCS5_pbe_set(pbe_nid, iterations, salt, salt_len);
530 if (!pbe) {
531 OPENSSL_PUT_ERROR(PKCS8, PKCS8_encrypt_pbe, ERR_R_ASN1_LIB);
532 goto err;
533 }
534
535 X509_ALGOR_free(pkcs8->algor);
536 pkcs8->algor = pbe;
537 M_ASN1_OCTET_STRING_free(pkcs8->digest);
538 pkcs8->digest = pkcs12_item_i2d_encrypt(
539 pbe, ASN1_ITEM_rptr(PKCS8_PRIV_KEY_INFO), pass_raw, pass_raw_len, p8inf);
540 if (!pkcs8->digest) {
541 OPENSSL_PUT_ERROR(PKCS8, PKCS8_encrypt_pbe, PKCS8_R_ENCRYPT_ERROR);
542 goto err;
543 }
544
545 return pkcs8;
546
547 err:
548 X509_SIG_free(pkcs8);
549 return NULL;
550 }
551
EVP_PKCS82PKEY(PKCS8_PRIV_KEY_INFO * p8)552 EVP_PKEY *EVP_PKCS82PKEY(PKCS8_PRIV_KEY_INFO *p8) {
553 EVP_PKEY *pkey = NULL;
554 ASN1_OBJECT *algoid;
555 char obj_tmp[80];
556
557 if (!PKCS8_pkey_get0(&algoid, NULL, NULL, NULL, p8)) {
558 return NULL;
559 }
560
561 pkey = EVP_PKEY_new();
562 if (pkey == NULL) {
563 OPENSSL_PUT_ERROR(PKCS8, EVP_PKCS82PKEY, ERR_R_MALLOC_FAILURE);
564 return NULL;
565 }
566
567 if (!EVP_PKEY_set_type(pkey, OBJ_obj2nid(algoid))) {
568 OPENSSL_PUT_ERROR(PKCS8, EVP_PKCS82PKEY,
569 PKCS8_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM);
570 i2t_ASN1_OBJECT(obj_tmp, 80, algoid);
571 ERR_add_error_data(2, "TYPE=", obj_tmp);
572 goto error;
573 }
574
575 if (pkey->ameth->priv_decode) {
576 if (!pkey->ameth->priv_decode(pkey, p8)) {
577 OPENSSL_PUT_ERROR(PKCS8, EVP_PKCS82PKEY, PKCS8_R_PRIVATE_KEY_DECODE_ERROR);
578 goto error;
579 }
580 } else {
581 OPENSSL_PUT_ERROR(PKCS8, EVP_PKCS82PKEY, PKCS8_R_METHOD_NOT_SUPPORTED);
582 goto error;
583 }
584
585 return pkey;
586
587 error:
588 EVP_PKEY_free(pkey);
589 return NULL;
590 }
591
EVP_PKEY2PKCS8(EVP_PKEY * pkey)592 PKCS8_PRIV_KEY_INFO *EVP_PKEY2PKCS8(EVP_PKEY *pkey) {
593 PKCS8_PRIV_KEY_INFO *p8;
594
595 p8 = PKCS8_PRIV_KEY_INFO_new();
596 if (p8 == NULL) {
597 OPENSSL_PUT_ERROR(PKCS8, EVP_PKEY2PKCS8, ERR_R_MALLOC_FAILURE);
598 return NULL;
599 }
600 p8->broken = PKCS8_OK;
601
602 if (pkey->ameth) {
603 if (pkey->ameth->priv_encode) {
604 if (!pkey->ameth->priv_encode(p8, pkey)) {
605 OPENSSL_PUT_ERROR(PKCS8, EVP_PKEY2PKCS8,
606 PKCS8_R_PRIVATE_KEY_ENCODE_ERROR);
607 goto error;
608 }
609 } else {
610 OPENSSL_PUT_ERROR(PKCS8, EVP_PKEY2PKCS8, PKCS8_R_METHOD_NOT_SUPPORTED);
611 goto error;
612 }
613 } else {
614 OPENSSL_PUT_ERROR(PKCS8, EVP_PKEY2PKCS8,
615 PKCS8_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM);
616 goto error;
617 }
618 return p8;
619
620 error:
621 PKCS8_PRIV_KEY_INFO_free(p8);
622 return NULL;
623 }
624
625 struct pkcs12_context {
626 EVP_PKEY **out_key;
627 STACK_OF(X509) *out_certs;
628 uint8_t *password;
629 size_t password_len;
630 };
631
632 static int PKCS12_handle_content_info(CBS *content_info, unsigned depth,
633 struct pkcs12_context *ctx);
634
635 /* PKCS12_handle_content_infos parses a series of PKCS#7 ContentInfos in a
636 * SEQUENCE. */
PKCS12_handle_content_infos(CBS * content_infos,unsigned depth,struct pkcs12_context * ctx)637 static int PKCS12_handle_content_infos(CBS *content_infos,
638 unsigned depth,
639 struct pkcs12_context *ctx) {
640 uint8_t *der_bytes = NULL;
641 size_t der_len;
642 CBS in;
643 int ret = 0;
644
645 /* Generally we only expect depths 0 (the top level, with a
646 * pkcs7-encryptedData and a pkcs7-data) and depth 1 (the various PKCS#12
647 * bags). */
648 if (depth > 3) {
649 OPENSSL_PUT_ERROR(PKCS8, PKCS12_handle_content_infos,
650 PKCS8_R_PKCS12_TOO_DEEPLY_NESTED);
651 return 0;
652 }
653
654 /* Although a BER->DER conversion is done at the beginning of |PKCS12_parse|,
655 * the ASN.1 data gets wrapped in OCTETSTRINGs and/or encrypted and the
656 * conversion cannot see through those wrappings. So each time we step
657 * through one we need to convert to DER again. */
658 if (!CBS_asn1_ber_to_der(content_infos, &der_bytes, &der_len)) {
659 return 0;
660 }
661
662 if (der_bytes != NULL) {
663 CBS_init(&in, der_bytes, der_len);
664 } else {
665 CBS_init(&in, CBS_data(content_infos), CBS_len(content_infos));
666 }
667
668 if (!CBS_get_asn1(&in, &in, CBS_ASN1_SEQUENCE)) {
669 OPENSSL_PUT_ERROR(PKCS8, PKCS12_handle_content_infos,
670 PKCS8_R_BAD_PKCS12_DATA);
671 goto err;
672 }
673
674 while (CBS_len(&in) > 0) {
675 CBS content_info;
676 if (!CBS_get_asn1(&in, &content_info, CBS_ASN1_SEQUENCE)) {
677 OPENSSL_PUT_ERROR(PKCS8, PKCS12_handle_content_infos,
678 PKCS8_R_BAD_PKCS12_DATA);
679 goto err;
680 }
681
682 if (!PKCS12_handle_content_info(&content_info, depth + 1, ctx)) {
683 goto err;
684 }
685 }
686
687 /* NSS includes additional data after the SEQUENCE, but it's an (unwrapped)
688 * copy of the same encrypted private key (with the same IV and
689 * ciphertext)! */
690
691 ret = 1;
692
693 err:
694 OPENSSL_free(der_bytes);
695 return ret;
696 }
697
698 /* PKCS12_handle_content_info parses a single PKCS#7 ContentInfo element in a
699 * PKCS#12 structure. */
PKCS12_handle_content_info(CBS * content_info,unsigned depth,struct pkcs12_context * ctx)700 static int PKCS12_handle_content_info(CBS *content_info, unsigned depth,
701 struct pkcs12_context *ctx) {
702 CBS content_type, wrapped_contents, contents, content_infos;
703 int nid, ret = 0;
704
705 if (!CBS_get_asn1(content_info, &content_type, CBS_ASN1_OBJECT) ||
706 !CBS_get_asn1(content_info, &wrapped_contents,
707 CBS_ASN1_CONTEXT_SPECIFIC | CBS_ASN1_CONSTRUCTED | 0)) {
708 OPENSSL_PUT_ERROR(PKCS8, PKCS12_handle_content_info,
709 PKCS8_R_BAD_PKCS12_DATA);
710 goto err;
711 }
712
713 nid = OBJ_cbs2nid(&content_type);
714 if (nid == NID_pkcs7_encrypted) {
715 /* See https://tools.ietf.org/html/rfc2315#section-13.
716 *
717 * PKCS#7 encrypted data inside a PKCS#12 structure is generally an
718 * encrypted certificate bag and it's generally encrypted with 40-bit
719 * RC2-CBC. */
720 CBS version_bytes, eci, contents_type, ai, encrypted_contents;
721 X509_ALGOR *algor = NULL;
722 const uint8_t *inp;
723 uint8_t *out;
724 size_t out_len;
725
726 if (!CBS_get_asn1(&wrapped_contents, &contents, CBS_ASN1_SEQUENCE) ||
727 !CBS_get_asn1(&contents, &version_bytes, CBS_ASN1_INTEGER) ||
728 /* EncryptedContentInfo, see
729 * https://tools.ietf.org/html/rfc2315#section-10.1 */
730 !CBS_get_asn1(&contents, &eci, CBS_ASN1_SEQUENCE) ||
731 !CBS_get_asn1(&eci, &contents_type, CBS_ASN1_OBJECT) ||
732 /* AlgorithmIdentifier, see
733 * https://tools.ietf.org/html/rfc5280#section-4.1.1.2 */
734 !CBS_get_asn1_element(&eci, &ai, CBS_ASN1_SEQUENCE) ||
735 !CBS_get_asn1(&eci, &encrypted_contents,
736 CBS_ASN1_CONTEXT_SPECIFIC | 0)) {
737 OPENSSL_PUT_ERROR(PKCS8, PKCS12_handle_content_info,
738 PKCS8_R_BAD_PKCS12_DATA);
739 goto err;
740 }
741
742 if (OBJ_cbs2nid(&contents_type) != NID_pkcs7_data) {
743 OPENSSL_PUT_ERROR(PKCS8, PKCS12_handle_content_info,
744 PKCS8_R_BAD_PKCS12_DATA);
745 goto err;
746 }
747
748 inp = CBS_data(&ai);
749 algor = d2i_X509_ALGOR(NULL, &inp, CBS_len(&ai));
750 if (algor == NULL) {
751 goto err;
752 }
753 if (inp != CBS_data(&ai) + CBS_len(&ai)) {
754 X509_ALGOR_free(algor);
755 OPENSSL_PUT_ERROR(PKCS8, PKCS12_handle_content_info,
756 PKCS8_R_BAD_PKCS12_DATA);
757 goto err;
758 }
759
760 if (!pbe_crypt(algor, ctx->password, ctx->password_len,
761 CBS_data(&encrypted_contents), CBS_len(&encrypted_contents),
762 &out, &out_len, 0 /* decrypt */)) {
763 X509_ALGOR_free(algor);
764 goto err;
765 }
766 X509_ALGOR_free(algor);
767
768 CBS_init(&content_infos, out, out_len);
769 ret = PKCS12_handle_content_infos(&content_infos, depth + 1, ctx);
770 OPENSSL_free(out);
771 } else if (nid == NID_pkcs7_data) {
772 CBS octet_string_contents;
773
774 if (!CBS_get_asn1(&wrapped_contents, &octet_string_contents,
775 CBS_ASN1_OCTETSTRING)) {
776 OPENSSL_PUT_ERROR(PKCS8, PKCS12_handle_content_info,
777 PKCS8_R_BAD_PKCS12_DATA);
778 goto err;
779 }
780
781 ret = PKCS12_handle_content_infos(&octet_string_contents, depth + 1, ctx);
782 } else if (nid == NID_pkcs8ShroudedKeyBag) {
783 /* See ftp://ftp.rsasecurity.com/pub/pkcs/pkcs-12/pkcs-12v1.pdf, section
784 * 4.2.2. */
785 const uint8_t *inp = CBS_data(&wrapped_contents);
786 PKCS8_PRIV_KEY_INFO *pki = NULL;
787 X509_SIG *encrypted = NULL;
788
789 if (*ctx->out_key) {
790 OPENSSL_PUT_ERROR(PKCS8, PKCS12_handle_content_info,
791 PKCS8_R_MULTIPLE_PRIVATE_KEYS_IN_PKCS12);
792 goto err;
793 }
794
795 /* encrypted isn't actually an X.509 signature, but it has the same
796 * structure as one and so |X509_SIG| is reused to store it. */
797 encrypted = d2i_X509_SIG(NULL, &inp, CBS_len(&wrapped_contents));
798 if (encrypted == NULL) {
799 OPENSSL_PUT_ERROR(PKCS8, PKCS12_handle_content_info,
800 PKCS8_R_BAD_PKCS12_DATA);
801 goto err;
802 }
803 if (inp != CBS_data(&wrapped_contents) + CBS_len(&wrapped_contents)) {
804 OPENSSL_PUT_ERROR(PKCS8, PKCS12_handle_content_info,
805 PKCS8_R_BAD_PKCS12_DATA);
806 X509_SIG_free(encrypted);
807 goto err;
808 }
809
810 pki = PKCS8_decrypt_pbe(encrypted, ctx->password, ctx->password_len);
811 X509_SIG_free(encrypted);
812 if (pki == NULL) {
813 goto err;
814 }
815
816 *ctx->out_key = EVP_PKCS82PKEY(pki);
817 PKCS8_PRIV_KEY_INFO_free(pki);
818
819 if (ctx->out_key == NULL) {
820 goto err;
821 }
822 ret = 1;
823 } else if (nid == NID_certBag) {
824 CBS cert_bag, cert_type, wrapped_cert, cert;
825
826 if (!CBS_get_asn1(&wrapped_contents, &cert_bag, CBS_ASN1_SEQUENCE) ||
827 !CBS_get_asn1(&cert_bag, &cert_type, CBS_ASN1_OBJECT) ||
828 !CBS_get_asn1(&cert_bag, &wrapped_cert,
829 CBS_ASN1_CONTEXT_SPECIFIC | CBS_ASN1_CONSTRUCTED | 0) ||
830 !CBS_get_asn1(&wrapped_cert, &cert, CBS_ASN1_OCTETSTRING)) {
831 OPENSSL_PUT_ERROR(PKCS8, PKCS12_handle_content_info,
832 PKCS8_R_BAD_PKCS12_DATA);
833 goto err;
834 }
835
836 if (OBJ_cbs2nid(&cert_type) == NID_x509Certificate) {
837 const uint8_t *inp = CBS_data(&cert);
838 X509 *x509 = d2i_X509(NULL, &inp, CBS_len(&cert));
839 if (!x509) {
840 OPENSSL_PUT_ERROR(PKCS8, PKCS12_handle_content_info,
841 PKCS8_R_BAD_PKCS12_DATA);
842 goto err;
843 }
844 if (inp != CBS_data(&cert) + CBS_len(&cert)) {
845 OPENSSL_PUT_ERROR(PKCS8, PKCS12_handle_content_info,
846 PKCS8_R_BAD_PKCS12_DATA);
847 X509_free(x509);
848 goto err;
849 }
850
851 if (0 == sk_X509_push(ctx->out_certs, x509)) {
852 X509_free(x509);
853 goto err;
854 }
855 }
856 ret = 1;
857 } else {
858 /* Unknown element type - ignore it. */
859 ret = 1;
860 }
861
862 err:
863 return ret;
864 }
865
PKCS12_get_key_and_certs(EVP_PKEY ** out_key,STACK_OF (X509)* out_certs,CBS * ber_in,const char * password)866 int PKCS12_get_key_and_certs(EVP_PKEY **out_key, STACK_OF(X509) *out_certs,
867 CBS *ber_in, const char *password) {
868 uint8_t *der_bytes = NULL;
869 size_t der_len;
870 CBS in, pfx, mac_data, authsafe, content_type, wrapped_authsafes, authsafes;
871 uint64_t version;
872 int ret = 0;
873 struct pkcs12_context ctx;
874 const size_t original_out_certs_len = sk_X509_num(out_certs);
875
876 /* The input may be in BER format. */
877 if (!CBS_asn1_ber_to_der(ber_in, &der_bytes, &der_len)) {
878 return 0;
879 }
880 if (der_bytes != NULL) {
881 CBS_init(&in, der_bytes, der_len);
882 } else {
883 CBS_init(&in, CBS_data(ber_in), CBS_len(ber_in));
884 }
885
886 *out_key = NULL;
887 memset(&ctx, 0, sizeof(ctx));
888
889 /* See ftp://ftp.rsasecurity.com/pub/pkcs/pkcs-12/pkcs-12v1.pdf, section
890 * four. */
891 if (!CBS_get_asn1(&in, &pfx, CBS_ASN1_SEQUENCE) ||
892 CBS_len(&in) != 0 ||
893 !CBS_get_asn1_uint64(&pfx, &version)) {
894 OPENSSL_PUT_ERROR(PKCS8, PKCS12_get_key_and_certs, PKCS8_R_BAD_PKCS12_DATA);
895 goto err;
896 }
897
898 if (version < 3) {
899 OPENSSL_PUT_ERROR(PKCS8, PKCS12_get_key_and_certs,
900 PKCS8_R_BAD_PKCS12_VERSION);
901 goto err;
902 }
903
904 if (!CBS_get_asn1(&pfx, &authsafe, CBS_ASN1_SEQUENCE)) {
905 OPENSSL_PUT_ERROR(PKCS8, PKCS12_get_key_and_certs, PKCS8_R_BAD_PKCS12_DATA);
906 goto err;
907 }
908
909 if (CBS_len(&pfx) == 0) {
910 OPENSSL_PUT_ERROR(PKCS8, PKCS12_get_key_and_certs, PKCS8_R_MISSING_MAC);
911 goto err;
912 }
913
914 if (!CBS_get_asn1(&pfx, &mac_data, CBS_ASN1_SEQUENCE)) {
915 OPENSSL_PUT_ERROR(PKCS8, PKCS12_get_key_and_certs, PKCS8_R_BAD_PKCS12_DATA);
916 goto err;
917 }
918
919 /* authsafe is a PKCS#7 ContentInfo. See
920 * https://tools.ietf.org/html/rfc2315#section-7. */
921 if (!CBS_get_asn1(&authsafe, &content_type, CBS_ASN1_OBJECT) ||
922 !CBS_get_asn1(&authsafe, &wrapped_authsafes,
923 CBS_ASN1_CONTEXT_SPECIFIC | CBS_ASN1_CONSTRUCTED | 0)) {
924 OPENSSL_PUT_ERROR(PKCS8, PKCS12_get_key_and_certs, PKCS8_R_BAD_PKCS12_DATA);
925 goto err;
926 }
927
928 /* The content type can either be |NID_pkcs7_data| or |NID_pkcs7_signed|. The
929 * latter indicates that it's signed by a public key, which isn't
930 * supported. */
931 if (OBJ_cbs2nid(&content_type) != NID_pkcs7_data) {
932 OPENSSL_PUT_ERROR(PKCS8, PKCS12_get_key_and_certs,
933 PKCS8_R_PKCS12_PUBLIC_KEY_INTEGRITY_NOT_SUPPORTED);
934 goto err;
935 }
936
937 if (!CBS_get_asn1(&wrapped_authsafes, &authsafes, CBS_ASN1_OCTETSTRING)) {
938 OPENSSL_PUT_ERROR(PKCS8, PKCS12_get_key_and_certs, PKCS8_R_BAD_PKCS12_DATA);
939 goto err;
940 }
941
942 ctx.out_key = out_key;
943 ctx.out_certs = out_certs;
944 if (!ascii_to_ucs2(password, strlen(password), &ctx.password,
945 &ctx.password_len)) {
946 OPENSSL_PUT_ERROR(PKCS8, PKCS12_get_key_and_certs, PKCS8_R_DECODE_ERROR);
947 goto err;
948 }
949
950 /* Verify the MAC. */
951 {
952 CBS mac, hash_type_seq, hash_oid, salt, expected_mac;
953 uint64_t iterations;
954 int hash_nid;
955 const EVP_MD *md;
956 uint8_t hmac_key[EVP_MAX_MD_SIZE];
957 uint8_t hmac[EVP_MAX_MD_SIZE];
958 unsigned hmac_len;
959
960 if (!CBS_get_asn1(&mac_data, &mac, CBS_ASN1_SEQUENCE) ||
961 !CBS_get_asn1(&mac, &hash_type_seq, CBS_ASN1_SEQUENCE) ||
962 !CBS_get_asn1(&hash_type_seq, &hash_oid, CBS_ASN1_OBJECT) ||
963 !CBS_get_asn1(&mac, &expected_mac, CBS_ASN1_OCTETSTRING) ||
964 !CBS_get_asn1(&mac_data, &salt, CBS_ASN1_OCTETSTRING)) {
965 OPENSSL_PUT_ERROR(PKCS8, PKCS12_get_key_and_certs, PKCS8_R_BAD_PKCS12_DATA);
966 goto err;
967 }
968
969 /* The iteration count is optional and the default is one. */
970 iterations = 1;
971 if (CBS_len(&mac_data) > 0) {
972 if (!CBS_get_asn1_uint64(&mac_data, &iterations) ||
973 iterations > INT_MAX) {
974 OPENSSL_PUT_ERROR(PKCS8, PKCS12_get_key_and_certs,
975 PKCS8_R_BAD_PKCS12_DATA);
976 goto err;
977 }
978 }
979
980 hash_nid = OBJ_cbs2nid(&hash_oid);
981 if (hash_nid == NID_undef ||
982 (md = EVP_get_digestbynid(hash_nid)) == NULL) {
983 OPENSSL_PUT_ERROR(PKCS8, PKCS12_get_key_and_certs, PKCS8_R_UNKNOWN_HASH);
984 goto err;
985 }
986
987 if (!pkcs12_key_gen_raw(ctx.password, ctx.password_len, CBS_data(&salt),
988 CBS_len(&salt), PKCS12_MAC_ID, iterations,
989 EVP_MD_size(md), hmac_key, md)) {
990 goto err;
991 }
992
993 if (NULL == HMAC(md, hmac_key, EVP_MD_size(md), CBS_data(&authsafes),
994 CBS_len(&authsafes), hmac, &hmac_len)) {
995 goto err;
996 }
997
998 if (!CBS_mem_equal(&expected_mac, hmac, hmac_len)) {
999 OPENSSL_PUT_ERROR(PKCS8, PKCS12_get_key_and_certs,
1000 PKCS8_R_INCORRECT_PASSWORD);
1001 goto err;
1002 }
1003 }
1004
1005 /* authsafes contains a series of PKCS#7 ContentInfos. */
1006 if (!PKCS12_handle_content_infos(&authsafes, 0, &ctx)) {
1007 goto err;
1008 }
1009
1010 ret = 1;
1011
1012 err:
1013 OPENSSL_free(ctx.password);
1014 OPENSSL_free(der_bytes);
1015 if (!ret) {
1016 EVP_PKEY_free(*out_key);
1017 *out_key = NULL;
1018 while (sk_X509_num(out_certs) > original_out_certs_len) {
1019 X509 *x509 = sk_X509_pop(out_certs);
1020 X509_free(x509);
1021 }
1022 }
1023
1024 return ret;
1025 }
1026
PKCS12_PBE_add(void)1027 void PKCS12_PBE_add(void) {}
1028
1029 struct pkcs12_st {
1030 uint8_t *ber_bytes;
1031 size_t ber_len;
1032 };
1033
d2i_PKCS12(PKCS12 ** out_p12,const uint8_t ** ber_bytes,size_t ber_len)1034 PKCS12* d2i_PKCS12(PKCS12 **out_p12, const uint8_t **ber_bytes, size_t ber_len) {
1035 PKCS12 *p12;
1036
1037 /* out_p12 must be NULL because we don't export the PKCS12 structure. */
1038 assert(out_p12 == NULL);
1039
1040 p12 = OPENSSL_malloc(sizeof(PKCS12));
1041 if (!p12) {
1042 return NULL;
1043 }
1044
1045 p12->ber_bytes = OPENSSL_malloc(ber_len);
1046 if (!p12->ber_bytes) {
1047 OPENSSL_free(p12);
1048 return NULL;
1049 }
1050
1051 memcpy(p12->ber_bytes, *ber_bytes, ber_len);
1052 p12->ber_len = ber_len;
1053 *ber_bytes += ber_len;
1054
1055 return p12;
1056 }
1057
d2i_PKCS12_bio(BIO * bio,PKCS12 ** out_p12)1058 PKCS12* d2i_PKCS12_bio(BIO *bio, PKCS12 **out_p12) {
1059 size_t used = 0;
1060 BUF_MEM *buf;
1061 const uint8_t *dummy;
1062 static const size_t kMaxSize = 256 * 1024;
1063 PKCS12 *ret = NULL;
1064
1065 buf = BUF_MEM_new();
1066 if (buf == NULL) {
1067 return NULL;
1068 }
1069 if (BUF_MEM_grow(buf, 8192) == 0) {
1070 goto out;
1071 }
1072
1073 for (;;) {
1074 int n = BIO_read(bio, &buf->data[used], buf->length - used);
1075 if (n < 0) {
1076 goto out;
1077 }
1078
1079 if (n == 0) {
1080 break;
1081 }
1082 used += n;
1083
1084 if (used < buf->length) {
1085 continue;
1086 }
1087
1088 if (buf->length > kMaxSize ||
1089 BUF_MEM_grow(buf, buf->length * 2) == 0) {
1090 goto out;
1091 }
1092 }
1093
1094 dummy = (uint8_t*) buf->data;
1095 ret = d2i_PKCS12(out_p12, &dummy, used);
1096
1097 out:
1098 BUF_MEM_free(buf);
1099 return ret;
1100 }
1101
d2i_PKCS12_fp(FILE * fp,PKCS12 ** out_p12)1102 PKCS12* d2i_PKCS12_fp(FILE *fp, PKCS12 **out_p12) {
1103 BIO *bio;
1104 PKCS12 *ret;
1105
1106 bio = BIO_new_fp(fp, 0 /* don't take ownership */);
1107 if (!bio) {
1108 return NULL;
1109 }
1110
1111 ret = d2i_PKCS12_bio(bio, out_p12);
1112 BIO_free(bio);
1113 return ret;
1114 }
1115
PKCS12_parse(const PKCS12 * p12,const char * password,EVP_PKEY ** out_pkey,X509 ** out_cert,STACK_OF (X509)** out_ca_certs)1116 int PKCS12_parse(const PKCS12 *p12, const char *password, EVP_PKEY **out_pkey,
1117 X509 **out_cert, STACK_OF(X509) **out_ca_certs) {
1118 CBS ber_bytes;
1119 STACK_OF(X509) *ca_certs = NULL;
1120 char ca_certs_alloced = 0;
1121
1122 if (out_ca_certs != NULL && *out_ca_certs != NULL) {
1123 ca_certs = *out_ca_certs;
1124 }
1125
1126 if (!ca_certs) {
1127 ca_certs = sk_X509_new_null();
1128 if (ca_certs == NULL) {
1129 return 0;
1130 }
1131 ca_certs_alloced = 1;
1132 }
1133
1134 CBS_init(&ber_bytes, p12->ber_bytes, p12->ber_len);
1135 if (!PKCS12_get_key_and_certs(out_pkey, ca_certs, &ber_bytes, password)) {
1136 if (ca_certs_alloced) {
1137 sk_X509_free(ca_certs);
1138 }
1139 return 0;
1140 }
1141
1142 *out_cert = NULL;
1143 if (sk_X509_num(ca_certs) > 0) {
1144 *out_cert = sk_X509_shift(ca_certs);
1145 }
1146
1147 if (out_ca_certs) {
1148 *out_ca_certs = ca_certs;
1149 } else {
1150 sk_X509_pop_free(ca_certs, X509_free);
1151 }
1152
1153 return 1;
1154 }
1155
PKCS12_free(PKCS12 * p12)1156 void PKCS12_free(PKCS12 *p12) {
1157 OPENSSL_free(p12->ber_bytes);
1158 OPENSSL_free(p12);
1159 }
1160