1 /* crypto/pkcs7/pk7_lib.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
8 *
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 *
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 *
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51 * SUCH DAMAGE.
52 *
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
57 */
58
59 #include <stdio.h>
60 #include "cryptlib.h"
61 #include <openssl/objects.h>
62 #include <openssl/x509.h>
63
PKCS7_ctrl(PKCS7 * p7,int cmd,long larg,char * parg)64 long PKCS7_ctrl(PKCS7 *p7, int cmd, long larg, char *parg)
65 {
66 int nid;
67 long ret;
68
69 nid=OBJ_obj2nid(p7->type);
70
71 switch (cmd)
72 {
73 case PKCS7_OP_SET_DETACHED_SIGNATURE:
74 if (nid == NID_pkcs7_signed)
75 {
76 ret=p7->detached=(int)larg;
77 if (ret && PKCS7_type_is_data(p7->d.sign->contents))
78 {
79 ASN1_OCTET_STRING *os;
80 os=p7->d.sign->contents->d.data;
81 ASN1_OCTET_STRING_free(os);
82 p7->d.sign->contents->d.data = NULL;
83 }
84 }
85 else
86 {
87 PKCS7err(PKCS7_F_PKCS7_CTRL,PKCS7_R_OPERATION_NOT_SUPPORTED_ON_THIS_TYPE);
88 ret=0;
89 }
90 break;
91 case PKCS7_OP_GET_DETACHED_SIGNATURE:
92 if (nid == NID_pkcs7_signed)
93 {
94 if(!p7->d.sign || !p7->d.sign->contents->d.ptr)
95 ret = 1;
96 else ret = 0;
97
98 p7->detached = ret;
99 }
100 else
101 {
102 PKCS7err(PKCS7_F_PKCS7_CTRL,PKCS7_R_OPERATION_NOT_SUPPORTED_ON_THIS_TYPE);
103 ret=0;
104 }
105
106 break;
107 default:
108 PKCS7err(PKCS7_F_PKCS7_CTRL,PKCS7_R_UNKNOWN_OPERATION);
109 ret=0;
110 }
111 return(ret);
112 }
113
PKCS7_content_new(PKCS7 * p7,int type)114 int PKCS7_content_new(PKCS7 *p7, int type)
115 {
116 PKCS7 *ret=NULL;
117
118 if ((ret=PKCS7_new()) == NULL) goto err;
119 if (!PKCS7_set_type(ret,type)) goto err;
120 if (!PKCS7_set_content(p7,ret)) goto err;
121
122 return(1);
123 err:
124 if (ret != NULL) PKCS7_free(ret);
125 return(0);
126 }
127
PKCS7_set_content(PKCS7 * p7,PKCS7 * p7_data)128 int PKCS7_set_content(PKCS7 *p7, PKCS7 *p7_data)
129 {
130 int i;
131
132 i=OBJ_obj2nid(p7->type);
133 switch (i)
134 {
135 case NID_pkcs7_signed:
136 if (p7->d.sign->contents != NULL)
137 PKCS7_free(p7->d.sign->contents);
138 p7->d.sign->contents=p7_data;
139 break;
140 case NID_pkcs7_digest:
141 if (p7->d.digest->contents != NULL)
142 PKCS7_free(p7->d.digest->contents);
143 p7->d.digest->contents=p7_data;
144 break;
145 case NID_pkcs7_data:
146 case NID_pkcs7_enveloped:
147 case NID_pkcs7_signedAndEnveloped:
148 case NID_pkcs7_encrypted:
149 default:
150 PKCS7err(PKCS7_F_PKCS7_SET_CONTENT,PKCS7_R_UNSUPPORTED_CONTENT_TYPE);
151 goto err;
152 }
153 return(1);
154 err:
155 return(0);
156 }
157
PKCS7_set_type(PKCS7 * p7,int type)158 int PKCS7_set_type(PKCS7 *p7, int type)
159 {
160 ASN1_OBJECT *obj;
161
162 /*PKCS7_content_free(p7);*/
163 obj=OBJ_nid2obj(type); /* will not fail */
164
165 switch (type)
166 {
167 case NID_pkcs7_signed:
168 p7->type=obj;
169 if ((p7->d.sign=PKCS7_SIGNED_new()) == NULL)
170 goto err;
171 if (!ASN1_INTEGER_set(p7->d.sign->version,1))
172 {
173 PKCS7_SIGNED_free(p7->d.sign);
174 p7->d.sign=NULL;
175 goto err;
176 }
177 break;
178 case NID_pkcs7_data:
179 p7->type=obj;
180 if ((p7->d.data=M_ASN1_OCTET_STRING_new()) == NULL)
181 goto err;
182 break;
183 case NID_pkcs7_signedAndEnveloped:
184 p7->type=obj;
185 if ((p7->d.signed_and_enveloped=PKCS7_SIGN_ENVELOPE_new())
186 == NULL) goto err;
187 ASN1_INTEGER_set(p7->d.signed_and_enveloped->version,1);
188 if (!ASN1_INTEGER_set(p7->d.signed_and_enveloped->version,1))
189 goto err;
190 p7->d.signed_and_enveloped->enc_data->content_type
191 = OBJ_nid2obj(NID_pkcs7_data);
192 break;
193 case NID_pkcs7_enveloped:
194 p7->type=obj;
195 if ((p7->d.enveloped=PKCS7_ENVELOPE_new())
196 == NULL) goto err;
197 if (!ASN1_INTEGER_set(p7->d.enveloped->version,0))
198 goto err;
199 p7->d.enveloped->enc_data->content_type
200 = OBJ_nid2obj(NID_pkcs7_data);
201 break;
202 case NID_pkcs7_encrypted:
203 p7->type=obj;
204 if ((p7->d.encrypted=PKCS7_ENCRYPT_new())
205 == NULL) goto err;
206 if (!ASN1_INTEGER_set(p7->d.encrypted->version,0))
207 goto err;
208 p7->d.encrypted->enc_data->content_type
209 = OBJ_nid2obj(NID_pkcs7_data);
210 break;
211
212 case NID_pkcs7_digest:
213 p7->type=obj;
214 if ((p7->d.digest=PKCS7_DIGEST_new())
215 == NULL) goto err;
216 if (!ASN1_INTEGER_set(p7->d.digest->version,0))
217 goto err;
218 break;
219 default:
220 PKCS7err(PKCS7_F_PKCS7_SET_TYPE,PKCS7_R_UNSUPPORTED_CONTENT_TYPE);
221 goto err;
222 }
223 return(1);
224 err:
225 return(0);
226 }
227
PKCS7_set0_type_other(PKCS7 * p7,int type,ASN1_TYPE * other)228 int PKCS7_set0_type_other(PKCS7 *p7, int type, ASN1_TYPE *other)
229 {
230 p7->type = OBJ_nid2obj(type);
231 p7->d.other = other;
232 return 1;
233 }
234
PKCS7_add_signer(PKCS7 * p7,PKCS7_SIGNER_INFO * psi)235 int PKCS7_add_signer(PKCS7 *p7, PKCS7_SIGNER_INFO *psi)
236 {
237 int i,j,nid;
238 X509_ALGOR *alg;
239 STACK_OF(PKCS7_SIGNER_INFO) *signer_sk;
240 STACK_OF(X509_ALGOR) *md_sk;
241
242 i=OBJ_obj2nid(p7->type);
243 switch (i)
244 {
245 case NID_pkcs7_signed:
246 signer_sk= p7->d.sign->signer_info;
247 md_sk= p7->d.sign->md_algs;
248 break;
249 case NID_pkcs7_signedAndEnveloped:
250 signer_sk= p7->d.signed_and_enveloped->signer_info;
251 md_sk= p7->d.signed_and_enveloped->md_algs;
252 break;
253 default:
254 PKCS7err(PKCS7_F_PKCS7_ADD_SIGNER,PKCS7_R_WRONG_CONTENT_TYPE);
255 return(0);
256 }
257
258 nid=OBJ_obj2nid(psi->digest_alg->algorithm);
259
260 /* If the digest is not currently listed, add it */
261 j=0;
262 for (i=0; i<sk_X509_ALGOR_num(md_sk); i++)
263 {
264 alg=sk_X509_ALGOR_value(md_sk,i);
265 if (OBJ_obj2nid(alg->algorithm) == nid)
266 {
267 j=1;
268 break;
269 }
270 }
271 if (!j) /* we need to add another algorithm */
272 {
273 if(!(alg=X509_ALGOR_new())
274 || !(alg->parameter = ASN1_TYPE_new())) {
275 PKCS7err(PKCS7_F_PKCS7_ADD_SIGNER,ERR_R_MALLOC_FAILURE);
276 return(0);
277 }
278 alg->algorithm=OBJ_nid2obj(nid);
279 alg->parameter->type = V_ASN1_NULL;
280 sk_X509_ALGOR_push(md_sk,alg);
281 }
282
283 sk_PKCS7_SIGNER_INFO_push(signer_sk,psi);
284 return(1);
285 }
286
PKCS7_add_certificate(PKCS7 * p7,X509 * x509)287 int PKCS7_add_certificate(PKCS7 *p7, X509 *x509)
288 {
289 int i;
290 STACK_OF(X509) **sk;
291
292 i=OBJ_obj2nid(p7->type);
293 switch (i)
294 {
295 case NID_pkcs7_signed:
296 sk= &(p7->d.sign->cert);
297 break;
298 case NID_pkcs7_signedAndEnveloped:
299 sk= &(p7->d.signed_and_enveloped->cert);
300 break;
301 default:
302 PKCS7err(PKCS7_F_PKCS7_ADD_CERTIFICATE,PKCS7_R_WRONG_CONTENT_TYPE);
303 return(0);
304 }
305
306 if (*sk == NULL)
307 *sk=sk_X509_new_null();
308 CRYPTO_add(&x509->references,1,CRYPTO_LOCK_X509);
309 sk_X509_push(*sk,x509);
310 return(1);
311 }
312
PKCS7_add_crl(PKCS7 * p7,X509_CRL * crl)313 int PKCS7_add_crl(PKCS7 *p7, X509_CRL *crl)
314 {
315 int i;
316 STACK_OF(X509_CRL) **sk;
317
318 i=OBJ_obj2nid(p7->type);
319 switch (i)
320 {
321 case NID_pkcs7_signed:
322 sk= &(p7->d.sign->crl);
323 break;
324 case NID_pkcs7_signedAndEnveloped:
325 sk= &(p7->d.signed_and_enveloped->crl);
326 break;
327 default:
328 PKCS7err(PKCS7_F_PKCS7_ADD_CRL,PKCS7_R_WRONG_CONTENT_TYPE);
329 return(0);
330 }
331
332 if (*sk == NULL)
333 *sk=sk_X509_CRL_new_null();
334
335 CRYPTO_add(&crl->references,1,CRYPTO_LOCK_X509_CRL);
336 sk_X509_CRL_push(*sk,crl);
337 return(1);
338 }
339
PKCS7_SIGNER_INFO_set(PKCS7_SIGNER_INFO * p7i,X509 * x509,EVP_PKEY * pkey,const EVP_MD * dgst)340 int PKCS7_SIGNER_INFO_set(PKCS7_SIGNER_INFO *p7i, X509 *x509, EVP_PKEY *pkey,
341 const EVP_MD *dgst)
342 {
343 int nid;
344 char is_dsa;
345
346 if (pkey->type == EVP_PKEY_DSA || pkey->type == EVP_PKEY_EC)
347 is_dsa = 1;
348 else
349 is_dsa = 0;
350 /* We now need to add another PKCS7_SIGNER_INFO entry */
351 if (!ASN1_INTEGER_set(p7i->version,1))
352 goto err;
353 if (!X509_NAME_set(&p7i->issuer_and_serial->issuer,
354 X509_get_issuer_name(x509)))
355 goto err;
356
357 /* because ASN1_INTEGER_set is used to set a 'long' we will do
358 * things the ugly way. */
359 M_ASN1_INTEGER_free(p7i->issuer_and_serial->serial);
360 if (!(p7i->issuer_and_serial->serial=
361 M_ASN1_INTEGER_dup(X509_get_serialNumber(x509))))
362 goto err;
363
364 /* lets keep the pkey around for a while */
365 CRYPTO_add(&pkey->references,1,CRYPTO_LOCK_EVP_PKEY);
366 p7i->pkey=pkey;
367
368 /* Set the algorithms */
369 if (is_dsa) p7i->digest_alg->algorithm=OBJ_nid2obj(NID_sha1);
370 else
371 p7i->digest_alg->algorithm=OBJ_nid2obj(EVP_MD_type(dgst));
372
373 if (p7i->digest_alg->parameter != NULL)
374 ASN1_TYPE_free(p7i->digest_alg->parameter);
375 if ((p7i->digest_alg->parameter=ASN1_TYPE_new()) == NULL)
376 goto err;
377 p7i->digest_alg->parameter->type=V_ASN1_NULL;
378
379 if (p7i->digest_enc_alg->parameter != NULL)
380 ASN1_TYPE_free(p7i->digest_enc_alg->parameter);
381 nid = EVP_PKEY_type(pkey->type);
382 if (nid == EVP_PKEY_RSA)
383 {
384 p7i->digest_enc_alg->algorithm=OBJ_nid2obj(NID_rsaEncryption);
385 if (!(p7i->digest_enc_alg->parameter=ASN1_TYPE_new()))
386 goto err;
387 p7i->digest_enc_alg->parameter->type=V_ASN1_NULL;
388 }
389 else if (nid == EVP_PKEY_DSA)
390 {
391 #if 1
392 /* use 'dsaEncryption' OID for compatibility with other software
393 * (PKCS #7 v1.5 does specify how to handle DSA) ... */
394 p7i->digest_enc_alg->algorithm=OBJ_nid2obj(NID_dsa);
395 #else
396 /* ... although the 'dsaWithSHA1' OID (as required by RFC 2630 for CMS)
397 * would make more sense. */
398 p7i->digest_enc_alg->algorithm=OBJ_nid2obj(NID_dsaWithSHA1);
399 #endif
400 p7i->digest_enc_alg->parameter = NULL; /* special case for DSA: omit 'parameter'! */
401 }
402 else if (nid == EVP_PKEY_EC)
403 {
404 p7i->digest_enc_alg->algorithm=OBJ_nid2obj(NID_ecdsa_with_SHA1);
405 if (!(p7i->digest_enc_alg->parameter=ASN1_TYPE_new()))
406 goto err;
407 p7i->digest_enc_alg->parameter->type=V_ASN1_NULL;
408 }
409 else
410 return(0);
411
412 return(1);
413 err:
414 return(0);
415 }
416
PKCS7_add_signature(PKCS7 * p7,X509 * x509,EVP_PKEY * pkey,const EVP_MD * dgst)417 PKCS7_SIGNER_INFO *PKCS7_add_signature(PKCS7 *p7, X509 *x509, EVP_PKEY *pkey,
418 const EVP_MD *dgst)
419 {
420 PKCS7_SIGNER_INFO *si;
421
422 if ((si=PKCS7_SIGNER_INFO_new()) == NULL) goto err;
423 if (!PKCS7_SIGNER_INFO_set(si,x509,pkey,dgst)) goto err;
424 if (!PKCS7_add_signer(p7,si)) goto err;
425 return(si);
426 err:
427 return(NULL);
428 }
429
PKCS7_set_digest(PKCS7 * p7,const EVP_MD * md)430 int PKCS7_set_digest(PKCS7 *p7, const EVP_MD *md)
431 {
432 if (PKCS7_type_is_digest(p7))
433 {
434 if(!(p7->d.digest->md->parameter = ASN1_TYPE_new()))
435 {
436 PKCS7err(PKCS7_F_PKCS7_SET_DIGEST,ERR_R_MALLOC_FAILURE);
437 return 0;
438 }
439 p7->d.digest->md->parameter->type = V_ASN1_NULL;
440 p7->d.digest->md->algorithm = OBJ_nid2obj(EVP_MD_nid(md));
441 return 1;
442 }
443
444 PKCS7err(PKCS7_F_PKCS7_SET_DIGEST,PKCS7_R_WRONG_CONTENT_TYPE);
445 return 1;
446 }
447
STACK_OF(PKCS7_SIGNER_INFO)448 STACK_OF(PKCS7_SIGNER_INFO) *PKCS7_get_signer_info(PKCS7 *p7)
449 {
450 if (PKCS7_type_is_signed(p7))
451 {
452 return(p7->d.sign->signer_info);
453 }
454 else if (PKCS7_type_is_signedAndEnveloped(p7))
455 {
456 return(p7->d.signed_and_enveloped->signer_info);
457 }
458 else
459 return(NULL);
460 }
461
PKCS7_add_recipient(PKCS7 * p7,X509 * x509)462 PKCS7_RECIP_INFO *PKCS7_add_recipient(PKCS7 *p7, X509 *x509)
463 {
464 PKCS7_RECIP_INFO *ri;
465
466 if ((ri=PKCS7_RECIP_INFO_new()) == NULL) goto err;
467 if (!PKCS7_RECIP_INFO_set(ri,x509)) goto err;
468 if (!PKCS7_add_recipient_info(p7,ri)) goto err;
469 return(ri);
470 err:
471 return(NULL);
472 }
473
PKCS7_add_recipient_info(PKCS7 * p7,PKCS7_RECIP_INFO * ri)474 int PKCS7_add_recipient_info(PKCS7 *p7, PKCS7_RECIP_INFO *ri)
475 {
476 int i;
477 STACK_OF(PKCS7_RECIP_INFO) *sk;
478
479 i=OBJ_obj2nid(p7->type);
480 switch (i)
481 {
482 case NID_pkcs7_signedAndEnveloped:
483 sk= p7->d.signed_and_enveloped->recipientinfo;
484 break;
485 case NID_pkcs7_enveloped:
486 sk= p7->d.enveloped->recipientinfo;
487 break;
488 default:
489 PKCS7err(PKCS7_F_PKCS7_ADD_RECIPIENT_INFO,PKCS7_R_WRONG_CONTENT_TYPE);
490 return(0);
491 }
492
493 sk_PKCS7_RECIP_INFO_push(sk,ri);
494 return(1);
495 }
496
PKCS7_RECIP_INFO_set(PKCS7_RECIP_INFO * p7i,X509 * x509)497 int PKCS7_RECIP_INFO_set(PKCS7_RECIP_INFO *p7i, X509 *x509)
498 {
499 if (!ASN1_INTEGER_set(p7i->version,0))
500 return 0;
501 if (!X509_NAME_set(&p7i->issuer_and_serial->issuer,
502 X509_get_issuer_name(x509)))
503 return 0;
504
505 M_ASN1_INTEGER_free(p7i->issuer_and_serial->serial);
506 if (!(p7i->issuer_and_serial->serial=
507 M_ASN1_INTEGER_dup(X509_get_serialNumber(x509))))
508 return 0;
509
510 X509_ALGOR_free(p7i->key_enc_algor);
511 if (!(p7i->key_enc_algor= X509_ALGOR_dup(x509->cert_info->key->algor)))
512 return 0;
513
514 CRYPTO_add(&x509->references,1,CRYPTO_LOCK_X509);
515 p7i->cert=x509;
516
517 return(1);
518 }
519
PKCS7_cert_from_signer_info(PKCS7 * p7,PKCS7_SIGNER_INFO * si)520 X509 *PKCS7_cert_from_signer_info(PKCS7 *p7, PKCS7_SIGNER_INFO *si)
521 {
522 if (PKCS7_type_is_signed(p7))
523 return(X509_find_by_issuer_and_serial(p7->d.sign->cert,
524 si->issuer_and_serial->issuer,
525 si->issuer_and_serial->serial));
526 else
527 return(NULL);
528 }
529
PKCS7_set_cipher(PKCS7 * p7,const EVP_CIPHER * cipher)530 int PKCS7_set_cipher(PKCS7 *p7, const EVP_CIPHER *cipher)
531 {
532 int i;
533 ASN1_OBJECT *objtmp;
534 PKCS7_ENC_CONTENT *ec;
535
536 i=OBJ_obj2nid(p7->type);
537 switch (i)
538 {
539 case NID_pkcs7_signedAndEnveloped:
540 ec=p7->d.signed_and_enveloped->enc_data;
541 break;
542 case NID_pkcs7_enveloped:
543 ec=p7->d.enveloped->enc_data;
544 break;
545 default:
546 PKCS7err(PKCS7_F_PKCS7_SET_CIPHER,PKCS7_R_WRONG_CONTENT_TYPE);
547 return(0);
548 }
549
550 /* Check cipher OID exists and has data in it*/
551 i = EVP_CIPHER_type(cipher);
552 if(i == NID_undef) {
553 PKCS7err(PKCS7_F_PKCS7_SET_CIPHER,PKCS7_R_CIPHER_HAS_NO_OBJECT_IDENTIFIER);
554 return(0);
555 }
556 objtmp = OBJ_nid2obj(i);
557
558 ec->cipher = cipher;
559 return 1;
560 }
561
562