crypto/cms/cms_lib.c

   1 /* crypto/cms/cms_lib.c */
   2 /*
   3  * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
   4  * project.
   5  */
   6 /* ====================================================================
   7  * Copyright (c) 2008 The OpenSSL Project.  All rights reserved.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  *
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  *
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in
  18  *    the documentation and/or other materials provided with the
  19  *    distribution.
  20  *
  21  * 3. All advertising materials mentioning features or use of this
  22  *    software must display the following acknowledgment:
  23  *    "This product includes software developed by the OpenSSL Project
  24  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
  25  *
  26  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  27  *    endorse or promote products derived from this software without
  28  *    prior written permission. For written permission, please contact
  29  *    licensing@OpenSSL.org.
  30  *
  31  * 5. Products derived from this software may not be called "OpenSSL"
  32  *    nor may "OpenSSL" appear in their names without prior written
  33  *    permission of the OpenSSL Project.
  34  *
  35  * 6. Redistributions of any form whatsoever must retain the following
  36  *    acknowledgment:
  37  *    "This product includes software developed by the OpenSSL Project
  38  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
  39  *
  40  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  41  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  42  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  43  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  44  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  45  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  46  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  47  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  49  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  50  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  51  * OF THE POSSIBILITY OF SUCH DAMAGE.
  52  * ====================================================================
  53  */
  54
  55 #include <openssl/asn1t.h>
  56 #include <openssl/x509v3.h>
  57 #include <openssl/err.h>
  58 #include <openssl/pem.h>
  59 #include <openssl/bio.h>
  60 #include <openssl/asn1.h>
  61 #include <openssl/cms.h>
  62 #include "cms_lcl.h"
  63
  64 IMPLEMENT_ASN1_FUNCTIONS(CMS_ContentInfo)
  65 IMPLEMENT_ASN1_PRINT_FUNCTION(CMS_ContentInfo)
  66
  67 DECLARE_ASN1_ITEM(CMS_CertificateChoices)
  68 DECLARE_ASN1_ITEM(CMS_RevocationInfoChoice)
  69 DECLARE_STACK_OF(CMS_CertificateChoices)
  70 DECLARE_STACK_OF(CMS_RevocationInfoChoice)
  71
  72 const ASN1_OBJECT *CMS_get0_type(CMS_ContentInfo *cms)
  73 {
  74     return cms->contentType;
  75 }
  76
  77 CMS_ContentInfo *cms_Data_create(void)
  78 {
  79     CMS_ContentInfo *cms;
  80     cms = CMS_ContentInfo_new();
  81     if (cms) {
  82         cms->contentType = OBJ_nid2obj(NID_pkcs7_data);
  83         /* Never detached */
  84         CMS_set_detached(cms, 0);
  85     }
  86     return cms;
  87 }
  88
  89 BIO *cms_content_bio(CMS_ContentInfo *cms)
  90 {
  91     ASN1_OCTET_STRING **pos = CMS_get0_content(cms);
  92     if (!pos)
  93         return NULL;
  94     /* If content detached data goes nowhere: create NULL BIO */
  95     if (!*pos)
  96         return BIO_new(BIO_s_null());
  97     /*
  98      * If content not detached and created return memory BIO
  99      */
 100     if (!*pos || ((*pos)->flags == ASN1_STRING_FLAG_CONT))
 101         return BIO_new(BIO_s_mem());
 102     /* Else content was read in: return read only BIO for it */
 103     return BIO_new_mem_buf((*pos)->data, (*pos)->length);
 104 }
 105
 106 BIO *CMS_dataInit(CMS_ContentInfo *cms, BIO *icont)
 107 {
 108     BIO *cmsbio, *cont;
 109     if (icont)
 110         cont = icont;
 111     else
 112         cont = cms_content_bio(cms);
 113     if (!cont) {
 114         CMSerr(CMS_F_CMS_DATAINIT, CMS_R_NO_CONTENT);
 115         return NULL;
 116     }
 117     switch (OBJ_obj2nid(cms->contentType)) {
 118
 119     case NID_pkcs7_data:
 120         return cont;
 121
 122     case NID_pkcs7_signed:
 123         cmsbio = cms_SignedData_init_bio(cms);
 124         break;
 125
 126     case NID_pkcs7_digest:
 127         cmsbio = cms_DigestedData_init_bio(cms);
 128         break;
 129 #ifdef ZLIB
 130     case NID_id_smime_ct_compressedData:
 131         cmsbio = cms_CompressedData_init_bio(cms);
 132         break;
 133 #endif
 134
 135     case NID_pkcs7_encrypted:
 136         cmsbio = cms_EncryptedData_init_bio(cms);
 137         break;
 138
 139     case NID_pkcs7_enveloped:
 140         cmsbio = cms_EnvelopedData_init_bio(cms);
 141         break;
 142
 143     default:
 144         CMSerr(CMS_F_CMS_DATAINIT, CMS_R_UNSUPPORTED_TYPE);
 145         return NULL;
 146     }
 147
 148     if (cmsbio)
 149         return BIO_push(cmsbio, cont);
 150
 151     if (!icont)
 152         BIO_free(cont);
 153     return NULL;
 154
 155 }
 156
 157 int CMS_dataFinal(CMS_ContentInfo *cms, BIO *cmsbio)
 158 {
 159     ASN1_OCTET_STRING **pos = CMS_get0_content(cms);
 160     if (!pos)
 161         return 0;
 162     /* If ebmedded content find memory BIO and set content */
 163     if (*pos && ((*pos)->flags & ASN1_STRING_FLAG_CONT)) {
 164         BIO *mbio;
 165         unsigned char *cont;
 166         long contlen;
 167         mbio = BIO_find_type(cmsbio, BIO_TYPE_MEM);
 168         if (!mbio) {
 169             CMSerr(CMS_F_CMS_DATAFINAL, CMS_R_CONTENT_NOT_FOUND);
 170             return 0;
 171         }
 172         contlen = BIO_get_mem_data(mbio, &cont);
 173         /* Set bio as read only so its content can't be clobbered */
 174         BIO_set_flags(mbio, BIO_FLAGS_MEM_RDONLY);
 175         BIO_set_mem_eof_return(mbio, 0);
 176         ASN1_STRING_set0(*pos, cont, contlen);
 177         (*pos)->flags &= ~ASN1_STRING_FLAG_CONT;
 178     }
 179
 180     switch (OBJ_obj2nid(cms->contentType)) {
 181
 182     case NID_pkcs7_data:
 183     case NID_pkcs7_enveloped:
 184     case NID_pkcs7_encrypted:
 185     case NID_id_smime_ct_compressedData:
 186         /* Nothing to do */
 187         return 1;
 188
 189     case NID_pkcs7_signed:
 190         return cms_SignedData_final(cms, cmsbio);
 191
 192     case NID_pkcs7_digest:
 193         return cms_DigestedData_do_final(cms, cmsbio, 0);
 194
 195     default:
 196         CMSerr(CMS_F_CMS_DATAFINAL, CMS_R_UNSUPPORTED_TYPE);
 197         return 0;
 198     }
 199 }
 200
 201 /*
 202  * Return an OCTET STRING pointer to content. This allows it to be accessed
 203  * or set later.
 204  */
 205
 206 ASN1_OCTET_STRING **CMS_get0_content(CMS_ContentInfo *cms)
 207 {
 208     switch (OBJ_obj2nid(cms->contentType)) {
 209
 210     case NID_pkcs7_data:
 211         return &cms->d.data;
 212
 213     case NID_pkcs7_signed:
 214         return &cms->d.signedData->encapContentInfo->eContent;
 215
 216     case NID_pkcs7_enveloped:
 217         return &cms->d.envelopedData->encryptedContentInfo->encryptedContent;
 218
 219     case NID_pkcs7_digest:
 220         return &cms->d.digestedData->encapContentInfo->eContent;
 221
 222     case NID_pkcs7_encrypted:
 223         return &cms->d.encryptedData->encryptedContentInfo->encryptedContent;
 224
 225     case NID_id_smime_ct_authData:
 226         return &cms->d.authenticatedData->encapContentInfo->eContent;
 227
 228     case NID_id_smime_ct_compressedData:
 229         return &cms->d.compressedData->encapContentInfo->eContent;
 230
 231     default:
 232         if (cms->d.other->type == V_ASN1_OCTET_STRING)
 233             return &cms->d.other->value.octet_string;
 234         CMSerr(CMS_F_CMS_GET0_CONTENT, CMS_R_UNSUPPORTED_CONTENT_TYPE);
 235         return NULL;
 236
 237     }
 238 }
 239
 240 /*
 241  * Return an ASN1_OBJECT pointer to content type. This allows it to be
 242  * accessed or set later.
 243  */
 244
 245 static ASN1_OBJECT **cms_get0_econtent_type(CMS_ContentInfo *cms)
 246 {
 247     switch (OBJ_obj2nid(cms->contentType)) {
 248
 249     case NID_pkcs7_signed:
 250         return &cms->d.signedData->encapContentInfo->eContentType;
 251
 252     case NID_pkcs7_enveloped:
 253         return &cms->d.envelopedData->encryptedContentInfo->contentType;
 254
 255     case NID_pkcs7_digest:
 256         return &cms->d.digestedData->encapContentInfo->eContentType;
 257
 258     case NID_pkcs7_encrypted:
 259         return &cms->d.encryptedData->encryptedContentInfo->contentType;
 260
 261     case NID_id_smime_ct_authData:
 262         return &cms->d.authenticatedData->encapContentInfo->eContentType;
 263
 264     case NID_id_smime_ct_compressedData:
 265         return &cms->d.compressedData->encapContentInfo->eContentType;
 266
 267     default:
 268         CMSerr(CMS_F_CMS_GET0_ECONTENT_TYPE, CMS_R_UNSUPPORTED_CONTENT_TYPE);
 269         return NULL;
 270
 271     }
 272 }
 273
 274 const ASN1_OBJECT *CMS_get0_eContentType(CMS_ContentInfo *cms)
 275 {
 276     ASN1_OBJECT **petype;
 277     petype = cms_get0_econtent_type(cms);
 278     if (petype)
 279         return *petype;
 280     return NULL;
 281 }
 282
 283 int CMS_set1_eContentType(CMS_ContentInfo *cms, const ASN1_OBJECT *oid)
 284 {
 285     ASN1_OBJECT **petype, *etype;
 286     petype = cms_get0_econtent_type(cms);
 287     if (!petype)
 288         return 0;
 289     if (!oid)
 290         return 1;
 291     etype = OBJ_dup(oid);
 292     if (!etype)
 293         return 0;
 294     ASN1_OBJECT_free(*petype);
 295     *petype = etype;
 296     return 1;
 297 }
 298
 299 int CMS_is_detached(CMS_ContentInfo *cms)
 300 {
 301     ASN1_OCTET_STRING **pos;
 302     pos = CMS_get0_content(cms);
 303     if (!pos)
 304         return -1;
 305     if (*pos)
 306         return 0;
 307     return 1;
 308 }
 309
 310 int CMS_set_detached(CMS_ContentInfo *cms, int detached)
 311 {
 312     ASN1_OCTET_STRING **pos;
 313     pos = CMS_get0_content(cms);
 314     if (!pos)
 315         return 0;
 316     if (detached) {
 317         if (*pos) {
 318             ASN1_OCTET_STRING_free(*pos);
 319             *pos = NULL;
 320         }
 321         return 1;
 322     }
 323     if (!*pos)
 324         *pos = ASN1_OCTET_STRING_new();
 325     if (*pos) {
 326         /*
 327          * NB: special flag to show content is created and not read in.
 328          */
 329         (*pos)->flags |= ASN1_STRING_FLAG_CONT;
 330         return 1;
 331     }
 332     CMSerr(CMS_F_CMS_SET_DETACHED, ERR_R_MALLOC_FAILURE);
 333     return 0;
 334 }
 335
 336 /* Create a digest BIO from an X509_ALGOR structure */
 337
 338 BIO *cms_DigestAlgorithm_init_bio(X509_ALGOR *digestAlgorithm)
 339 {
 340     BIO *mdbio = NULL;
 341     ASN1_OBJECT *digestoid;
 342     const EVP_MD *digest;
 343     X509_ALGOR_get0(&digestoid, NULL, NULL, digestAlgorithm);
 344     digest = EVP_get_digestbyobj(digestoid);
 345     if (!digest) {
 346         CMSerr(CMS_F_CMS_DIGESTALGORITHM_INIT_BIO,
 347                CMS_R_UNKNOWN_DIGEST_ALGORIHM);
 348         goto err;
 349     }
 350     mdbio = BIO_new(BIO_f_md());
 351     if (!mdbio || !BIO_set_md(mdbio, digest)) {
 352         CMSerr(CMS_F_CMS_DIGESTALGORITHM_INIT_BIO, CMS_R_MD_BIO_INIT_ERROR);
 353         goto err;
 354     }
 355     return mdbio;
 356  err:
 357     BIO_free(mdbio);
 358     return NULL;
 359 }
 360
 361 /* Locate a message digest content from a BIO chain based on SignerInfo */
 362
 363 int cms_DigestAlgorithm_find_ctx(EVP_MD_CTX *mctx, BIO *chain,
 364                                  X509_ALGOR *mdalg)
 365 {
 366     int nid;
 367     ASN1_OBJECT *mdoid;
 368     X509_ALGOR_get0(&mdoid, NULL, NULL, mdalg);
 369     nid = OBJ_obj2nid(mdoid);
 370     /* Look for digest type to match signature */
 371     for (;;) {
 372         EVP_MD_CTX *mtmp;
 373         chain = BIO_find_type(chain, BIO_TYPE_MD);
 374         if (chain == NULL) {
 375             CMSerr(CMS_F_CMS_DIGESTALGORITHM_FIND_CTX,
 376                    CMS_R_NO_MATCHING_DIGEST);
 377             return 0;
 378         }
 379         BIO_get_md_ctx(chain, &mtmp);
 380         if (EVP_MD_CTX_type(mtmp) == nid
 381             /*
 382              * Workaround for broken implementations that use signature
 383              * algorithm OID instead of digest.
 384              */
 385             || EVP_MD_pkey_type(EVP_MD_CTX_md(mtmp)) == nid)
 386             return EVP_MD_CTX_copy_ex(mctx, mtmp);
 387         chain = BIO_next(chain);
 388     }
 389 }
 390
 391 static STACK_OF(CMS_CertificateChoices)
 392 **cms_get0_certificate_choices(CMS_ContentInfo *cms)
 393 {
 394     switch (OBJ_obj2nid(cms->contentType)) {
 395
 396     case NID_pkcs7_signed:
 397         return &cms->d.signedData->certificates;
 398
 399     case NID_pkcs7_enveloped:
 400         return &cms->d.envelopedData->originatorInfo->certificates;
 401
 402     default:
 403         CMSerr(CMS_F_CMS_GET0_CERTIFICATE_CHOICES,
 404                CMS_R_UNSUPPORTED_CONTENT_TYPE);
 405         return NULL;
 406
 407     }
 408 }
 409
 410 CMS_CertificateChoices *CMS_add0_CertificateChoices(CMS_ContentInfo *cms)
 411 {
 412     STACK_OF(CMS_CertificateChoices) **pcerts;
 413     CMS_CertificateChoices *cch;
 414     pcerts = cms_get0_certificate_choices(cms);
 415     if (!pcerts)
 416         return NULL;
 417     if (!*pcerts)
 418         *pcerts = sk_CMS_CertificateChoices_new_null();
 419     if (!*pcerts)
 420         return NULL;
 421     cch = M_ASN1_new_of(CMS_CertificateChoices);
 422     if (!cch)
 423         return NULL;
 424     if (!sk_CMS_CertificateChoices_push(*pcerts, cch)) {
 425         M_ASN1_free_of(cch, CMS_CertificateChoices);
 426         return NULL;
 427     }
 428     return cch;
 429 }
 430
 431 int CMS_add0_cert(CMS_ContentInfo *cms, X509 *cert)
 432 {
 433     CMS_CertificateChoices *cch;
 434     STACK_OF(CMS_CertificateChoices) **pcerts;
 435     int i;
 436     pcerts = cms_get0_certificate_choices(cms);
 437     if (!pcerts)
 438         return 0;
 439     for (i = 0; i < sk_CMS_CertificateChoices_num(*pcerts); i++) {
 440         cch = sk_CMS_CertificateChoices_value(*pcerts, i);
 441         if (cch->type == CMS_CERTCHOICE_CERT) {
 442             if (!X509_cmp(cch->d.certificate, cert)) {
 443                 CMSerr(CMS_F_CMS_ADD0_CERT,
 444                        CMS_R_CERTIFICATE_ALREADY_PRESENT);
 445                 return 0;
 446             }
 447         }
 448     }
 449     cch = CMS_add0_CertificateChoices(cms);
 450     if (!cch)
 451         return 0;
 452     cch->type = CMS_CERTCHOICE_CERT;
 453     cch->d.certificate = cert;
 454     return 1;
 455 }
 456
 457 int CMS_add1_cert(CMS_ContentInfo *cms, X509 *cert)
 458 {
 459     int r;
 460     r = CMS_add0_cert(cms, cert);
 461     if (r > 0)
 462         CRYPTO_add(&cert->references, 1, CRYPTO_LOCK_X509);
 463     return r;
 464 }
 465
 466 static STACK_OF(CMS_RevocationInfoChoice)
 467 **cms_get0_revocation_choices(CMS_ContentInfo *cms)
 468 {
 469     switch (OBJ_obj2nid(cms->contentType)) {
 470
 471     case NID_pkcs7_signed:
 472         return &cms->d.signedData->crls;
 473
 474     case NID_pkcs7_enveloped:
 475         return &cms->d.envelopedData->originatorInfo->crls;
 476
 477     default:
 478         CMSerr(CMS_F_CMS_GET0_REVOCATION_CHOICES,
 479                CMS_R_UNSUPPORTED_CONTENT_TYPE);
 480         return NULL;
 481
 482     }
 483 }
 484
 485 CMS_RevocationInfoChoice *CMS_add0_RevocationInfoChoice(CMS_ContentInfo *cms)
 486 {
 487     STACK_OF(CMS_RevocationInfoChoice) **pcrls;
 488     CMS_RevocationInfoChoice *rch;
 489     pcrls = cms_get0_revocation_choices(cms);
 490     if (!pcrls)
 491         return NULL;
 492     if (!*pcrls)
 493         *pcrls = sk_CMS_RevocationInfoChoice_new_null();
 494     if (!*pcrls)
 495         return NULL;
 496     rch = M_ASN1_new_of(CMS_RevocationInfoChoice);
 497     if (!rch)
 498         return NULL;
 499     if (!sk_CMS_RevocationInfoChoice_push(*pcrls, rch)) {
 500         M_ASN1_free_of(rch, CMS_RevocationInfoChoice);
 501         return NULL;
 502     }
 503     return rch;
 504 }
 505
 506 int CMS_add0_crl(CMS_ContentInfo *cms, X509_CRL *crl)
 507 {
 508     CMS_RevocationInfoChoice *rch;
 509     rch = CMS_add0_RevocationInfoChoice(cms);
 510     if (!rch)
 511         return 0;
 512     rch->type = CMS_REVCHOICE_CRL;
 513     rch->d.crl = crl;
 514     return 1;
 515 }
 516
 517 int CMS_add1_crl(CMS_ContentInfo *cms, X509_CRL *crl)
 518 {
 519     int r;
 520     r = CMS_add0_crl(cms, crl);
 521     if (r > 0)
 522         CRYPTO_add(&crl->references, 1, CRYPTO_LOCK_X509_CRL);
 523     return r;
 524 }
 525
 526 STACK_OF(X509) *CMS_get1_certs(CMS_ContentInfo *cms)
 527 {
 528     STACK_OF(X509) *certs = NULL;
 529     CMS_CertificateChoices *cch;
 530     STACK_OF(CMS_CertificateChoices) **pcerts;
 531     int i;
 532     pcerts = cms_get0_certificate_choices(cms);
 533     if (!pcerts)
 534         return NULL;
 535     for (i = 0; i < sk_CMS_CertificateChoices_num(*pcerts); i++) {
 536         cch = sk_CMS_CertificateChoices_value(*pcerts, i);
 537         if (cch->type == 0) {
 538             if (!certs) {
 539                 certs = sk_X509_new_null();
 540                 if (!certs)
 541                     return NULL;
 542             }
 543             if (!sk_X509_push(certs, cch->d.certificate)) {
 544                 sk_X509_pop_free(certs, X509_free);
 545                 return NULL;
 546             }
 547             CRYPTO_add(&cch->d.certificate->references, 1, CRYPTO_LOCK_X509);
 548         }
 549     }
 550     return certs;
 551
 552 }
 553
 554 STACK_OF(X509_CRL) *CMS_get1_crls(CMS_ContentInfo *cms)
 555 {
 556     STACK_OF(X509_CRL) *crls = NULL;
 557     STACK_OF(CMS_RevocationInfoChoice) **pcrls;
 558     CMS_RevocationInfoChoice *rch;
 559     int i;
 560     pcrls = cms_get0_revocation_choices(cms);
 561     if (!pcrls)
 562         return NULL;
 563     for (i = 0; i < sk_CMS_RevocationInfoChoice_num(*pcrls); i++) {
 564         rch = sk_CMS_RevocationInfoChoice_value(*pcrls, i);
 565         if (rch->type == 0) {
 566             if (!crls) {
 567                 crls = sk_X509_CRL_new_null();
 568                 if (!crls)
 569                     return NULL;
 570             }
 571             if (!sk_X509_CRL_push(crls, rch->d.crl)) {
 572                 sk_X509_CRL_pop_free(crls, X509_CRL_free);
 573                 return NULL;
 574             }
 575             CRYPTO_add(&rch->d.crl->references, 1, CRYPTO_LOCK_X509_CRL);
 576         }
 577     }
 578     return crls;
 579 }
 580
 581 int cms_ias_cert_cmp(CMS_IssuerAndSerialNumber *ias, X509 *cert)
 582 {
 583     int ret;
 584     ret = X509_NAME_cmp(ias->issuer, X509_get_issuer_name(cert));
 585     if (ret)
 586         return ret;
 587     return ASN1_INTEGER_cmp(ias->serialNumber, X509_get_serialNumber(cert));
 588 }
 589
 590 int cms_keyid_cert_cmp(ASN1_OCTET_STRING *keyid, X509 *cert)
 591 {
 592     X509_check_purpose(cert, -1, -1);
 593     if (!cert->skid)
 594         return -1;
 595     return ASN1_OCTET_STRING_cmp(keyid, cert->skid);
 596 }
 597
 598 int cms_set1_ias(CMS_IssuerAndSerialNumber **pias, X509 *cert)
 599 {
 600     CMS_IssuerAndSerialNumber *ias;
 601     ias = M_ASN1_new_of(CMS_IssuerAndSerialNumber);
 602     if (!ias)
 603         goto err;
 604     if (!X509_NAME_set(&ias->issuer, X509_get_issuer_name(cert)))
 605         goto err;
 606     if (!ASN1_STRING_copy(ias->serialNumber, X509_get_serialNumber(cert)))
 607         goto err;
 608     if (*pias)
 609         M_ASN1_free_of(*pias, CMS_IssuerAndSerialNumber);
 610     *pias = ias;
 611     return 1;
 612  err:
 613     if (ias)
 614         M_ASN1_free_of(ias, CMS_IssuerAndSerialNumber);
 615     CMSerr(CMS_F_CMS_SET1_IAS, ERR_R_MALLOC_FAILURE);
 616     return 0;
 617 }
 618
 619 int cms_set1_keyid(ASN1_OCTET_STRING **pkeyid, X509 *cert)
 620 {
 621     ASN1_OCTET_STRING *keyid = NULL;
 622     X509_check_purpose(cert, -1, -1);
 623     if (!cert->skid) {
 624         CMSerr(CMS_F_CMS_SET1_KEYID, CMS_R_CERTIFICATE_HAS_NO_KEYID);
 625         return 0;
 626     }
 627     keyid = ASN1_STRING_dup(cert->skid);
 628     if (!keyid) {
 629         CMSerr(CMS_F_CMS_SET1_KEYID, ERR_R_MALLOC_FAILURE);
 630         return 0;
 631     }
 632     if (*pkeyid)
 633         ASN1_OCTET_STRING_free(*pkeyid);
 634     *pkeyid = keyid;
 635     return 1;
 636 }