1 /* crypto/cms/cms_sd.c */
2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
5 /* ====================================================================
6 * Copyright (c) 2008 The OpenSSL Project. All rights reserved.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
20 * 3. All advertising materials mentioning features or use of this
21 * software must display the following acknowledgment:
22 * "This product includes software developed by the OpenSSL Project
23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 * endorse or promote products derived from this software without
27 * prior written permission. For written permission, please contact
28 * licensing@OpenSSL.org.
30 * 5. Products derived from this software may not be called "OpenSSL"
31 * nor may "OpenSSL" appear in their names without prior written
32 * permission of the OpenSSL Project.
34 * 6. Redistributions of any form whatsoever must retain the following
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
55 #include <openssl/asn1t.h>
56 #include <openssl/pem.h>
57 #include <openssl/x509v3.h>
58 #include <openssl/err.h>
59 #include <openssl/cms.h>
61 #include "asn1_locl.h"
63 /* CMS SignedData Utilities */
65 DECLARE_ASN1_ITEM(CMS_SignedData)
67 static CMS_SignedData *cms_get0_signed(CMS_ContentInfo *cms)
69 if (OBJ_obj2nid(cms->contentType) != NID_pkcs7_signed)
71 CMSerr(CMS_F_CMS_GET0_SIGNED, CMS_R_CONTENT_TYPE_NOT_SIGNED_DATA);
74 return cms->d.signedData;
77 static CMS_SignedData *cms_signed_data_init(CMS_ContentInfo *cms)
79 if (cms->d.other == NULL)
81 cms->d.signedData = M_ASN1_new_of(CMS_SignedData);
82 if (!cms->d.signedData)
84 CMSerr(CMS_F_CMS_SIGNED_DATA_INIT, ERR_R_MALLOC_FAILURE);
87 cms->d.signedData->version = 1;
88 cms->d.signedData->encapContentInfo->eContentType =
89 OBJ_nid2obj(NID_pkcs7_data);
90 ASN1_OBJECT_free(cms->contentType);
91 cms->contentType = OBJ_nid2obj(NID_pkcs7_signed);
92 return cms->d.signedData;
94 return cms_get0_signed(cms);
97 /* Just initialize SignedData e.g. for certs only structure */
99 int CMS_SignedData_init(CMS_ContentInfo *cms)
101 if (cms_signed_data_init(cms))
107 /* Check structures and fixup version numbers (if necessary) */
109 static void cms_sd_set_version(CMS_SignedData *sd)
112 CMS_CertificateChoices *cch;
113 CMS_RevocationInfoChoice *rch;
116 for (i = 0; i < sk_CMS_CertificateChoices_num(sd->certificates); i++)
118 cch = sk_CMS_CertificateChoices_value(sd->certificates, i);
119 if (cch->type == CMS_CERTCHOICE_OTHER)
124 else if (cch->type == CMS_CERTCHOICE_V2ACERT)
129 else if (cch->type == CMS_CERTCHOICE_V1ACERT)
136 for (i = 0; i < sk_CMS_RevocationInfoChoice_num(sd->crls); i++)
138 rch = sk_CMS_RevocationInfoChoice_value(sd->crls, i);
139 if (rch->type == CMS_REVCHOICE_OTHER)
146 if ((OBJ_obj2nid(sd->encapContentInfo->eContentType) != NID_pkcs7_data)
147 && (sd->version < 3))
150 for (i = 0; i < sk_CMS_SignerInfo_num(sd->signerInfos); i++)
152 si = sk_CMS_SignerInfo_value(sd->signerInfos, i);
153 if (si->sid->type == CMS_SIGNERINFO_KEYIDENTIFIER)
169 /* Copy an existing messageDigest value */
171 static int cms_copy_messageDigest(CMS_ContentInfo *cms, CMS_SignerInfo *si)
173 STACK_OF(CMS_SignerInfo) *sinfos;
174 CMS_SignerInfo *sitmp;
176 sinfos = CMS_get0_SignerInfos(cms);
177 for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++)
179 ASN1_OCTET_STRING *messageDigest;
180 sitmp = sk_CMS_SignerInfo_value(sinfos, i);
183 if (CMS_signed_get_attr_count(sitmp) < 0)
185 if (OBJ_cmp(si->digestAlgorithm->algorithm,
186 sitmp->digestAlgorithm->algorithm))
188 messageDigest = CMS_signed_get0_data_by_OBJ(sitmp,
189 OBJ_nid2obj(NID_pkcs9_messageDigest),
190 -3, V_ASN1_OCTET_STRING);
193 CMSerr(CMS_F_CMS_COPY_MESSAGEDIGEST,
194 CMS_R_ERROR_READING_MESSAGEDIGEST_ATTRIBUTE);
198 if (CMS_signed_add1_attr_by_NID(si, NID_pkcs9_messageDigest,
205 CMSerr(CMS_F_CMS_COPY_MESSAGEDIGEST, CMS_R_NO_MATCHING_DIGEST);
209 int cms_set1_SignerIdentifier(CMS_SignerIdentifier *sid, X509 *cert, int type)
213 case CMS_SIGNERINFO_ISSUER_SERIAL:
214 sid->d.issuerAndSerialNumber =
215 M_ASN1_new_of(CMS_IssuerAndSerialNumber);
216 if (!sid->d.issuerAndSerialNumber)
218 if (!X509_NAME_set(&sid->d.issuerAndSerialNumber->issuer,
219 X509_get_issuer_name(cert)))
221 if (!ASN1_STRING_copy(
222 sid->d.issuerAndSerialNumber->serialNumber,
223 X509_get_serialNumber(cert)))
227 case CMS_SIGNERINFO_KEYIDENTIFIER:
228 sid->d.subjectKeyIdentifier = ASN1_STRING_dup(cert->skid);
229 if (!sid->d.subjectKeyIdentifier)
234 CMSerr(CMS_F_CMS_SET1_SIGNERIDENTIFIER, CMS_R_UNKNOWN_ID);
243 CMSerr(CMS_F_CMS_SET1_SIGNERIDENTIFIER, ERR_R_MALLOC_FAILURE);
248 int cms_SignerIdentifier_get0_signer_id(CMS_SignerIdentifier *sid,
249 ASN1_OCTET_STRING **keyid,
250 X509_NAME **issuer, ASN1_INTEGER **sno)
252 if (sid->type == CMS_SIGNERINFO_ISSUER_SERIAL)
255 *issuer = sid->d.issuerAndSerialNumber->issuer;
257 *sno = sid->d.issuerAndSerialNumber->serialNumber;
259 else if (sid->type == CMS_SIGNERINFO_KEYIDENTIFIER)
262 *keyid = sid->d.subjectKeyIdentifier;
269 int cms_SignerIdentifier_cert_cmp(CMS_SignerIdentifier *sid, X509 *cert)
272 if (sid->type == CMS_SIGNERINFO_ISSUER_SERIAL)
274 ret = X509_NAME_cmp(sid->d.issuerAndSerialNumber->issuer,
275 X509_get_issuer_name(cert));
278 return ASN1_INTEGER_cmp(sid->d.issuerAndSerialNumber->serialNumber,
279 X509_get_serialNumber(cert));
281 else if (sid->type == CMS_SIGNERINFO_KEYIDENTIFIER)
283 X509_check_purpose(cert, -1, -1);
286 return ASN1_OCTET_STRING_cmp(sid->d.subjectKeyIdentifier,
293 CMS_SignerInfo *CMS_add1_signer(CMS_ContentInfo *cms,
294 X509 *signer, EVP_PKEY *pk, const EVP_MD *md,
298 CMS_SignerInfo *si = NULL;
301 if(!X509_check_private_key(signer, pk))
303 CMSerr(CMS_F_CMS_ADD1_SIGNER,
304 CMS_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE);
307 sd = cms_signed_data_init(cms);
310 si = M_ASN1_new_of(CMS_SignerInfo);
313 X509_check_purpose(signer, -1, -1);
315 CRYPTO_add(&pk->references, 1, CRYPTO_LOCK_EVP_PKEY);
316 CRYPTO_add(&signer->references, 1, CRYPTO_LOCK_X509);
321 if (flags & CMS_USE_KEYID)
326 type = CMS_SIGNERINFO_KEYIDENTIFIER;
330 type = CMS_SIGNERINFO_ISSUER_SERIAL;
334 if (!cms_set1_SignerIdentifier(si->sid, signer, type))
340 if (EVP_PKEY_get_default_digest_nid(pk, &def_nid) <= 0)
342 md = EVP_get_digestbynid(def_nid);
345 CMSerr(CMS_F_CMS_ADD1_SIGNER, CMS_R_NO_DEFAULT_DIGEST);
352 CMSerr(CMS_F_CMS_ADD1_SIGNER, CMS_R_NO_DIGEST_SET);
356 cms_DigestAlgorithm_set(si->digestAlgorithm, md);
358 /* See if digest is present in digestAlgorithms */
359 for (i = 0; i < sk_X509_ALGOR_num(sd->digestAlgorithms); i++)
362 alg = sk_X509_ALGOR_value(sd->digestAlgorithms, i);
363 X509_ALGOR_get0(&aoid, NULL, NULL, alg);
364 if (OBJ_obj2nid(aoid) == EVP_MD_type(md))
368 if (i == sk_X509_ALGOR_num(sd->digestAlgorithms))
370 alg = X509_ALGOR_new();
373 cms_DigestAlgorithm_set(alg, md);
374 if (!sk_X509_ALGOR_push(sd->digestAlgorithms, alg))
376 X509_ALGOR_free(alg);
381 if (pk->ameth && pk->ameth->pkey_ctrl)
383 i = pk->ameth->pkey_ctrl(pk, ASN1_PKEY_CTRL_CMS_SIGN,
387 CMSerr(CMS_F_CMS_ADD1_SIGNER,
388 CMS_R_NOT_SUPPORTED_FOR_THIS_KEY_TYPE);
393 CMSerr(CMS_F_CMS_ADD1_SIGNER, CMS_R_CTRL_FAILURE);
398 if (!(flags & CMS_NOATTR))
400 /* Copy content type across */
402 OBJ_dup(sd->encapContentInfo->eContentType);
405 i = CMS_signed_add1_attr_by_NID(si, NID_pkcs9_contentType,
406 V_ASN1_OBJECT, ctype, -1);
407 ASN1_OBJECT_free(ctype);
410 if (!(flags & CMS_NOSMIMECAP))
412 STACK_OF(X509_ALGOR) *smcap = NULL;
413 i = CMS_add_standard_smimecap(&smcap);
415 i = CMS_add_smimecap(si, smcap);
416 sk_X509_ALGOR_pop_free(smcap, X509_ALGOR_free);
420 if (flags & CMS_REUSE_DIGEST)
422 if (!cms_copy_messageDigest(cms, si))
424 if (!(flags & CMS_PARTIAL) &&
425 !CMS_SignerInfo_sign(si))
430 if (!(flags & CMS_NOCERTS))
432 /* NB ignore -1 return for duplicate cert */
433 if (!CMS_add1_cert(cms, signer))
437 if (!sd->signerInfos)
438 sd->signerInfos = sk_CMS_SignerInfo_new_null();
439 if (!sd->signerInfos ||
440 !sk_CMS_SignerInfo_push(sd->signerInfos, si))
446 CMSerr(CMS_F_CMS_ADD1_SIGNER, ERR_R_MALLOC_FAILURE);
449 M_ASN1_free_of(si, CMS_SignerInfo);
454 int CMS_add1_signingTime(CMS_SignerInfo *si, ASN1_TIME *t)
461 tt = X509_gmtime_adj(NULL, 0);
466 if (CMS_signed_add1_attr_by_NID(si, NID_pkcs9_signingTime,
467 tt->type, tt, -1) <= 0)
478 CMSerr(CMS_F_CMS_ADD1_SIGNINGTIME, ERR_R_MALLOC_FAILURE);
484 STACK_OF(CMS_SignerInfo) *CMS_get0_SignerInfos(CMS_ContentInfo *cms)
487 sd = cms_get0_signed(cms);
490 return sd->signerInfos;
493 STACK_OF(X509) *CMS_get0_signers(CMS_ContentInfo *cms)
495 STACK_OF(X509) *signers = NULL;
496 STACK_OF(CMS_SignerInfo) *sinfos;
499 sinfos = CMS_get0_SignerInfos(cms);
500 for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++)
502 si = sk_CMS_SignerInfo_value(sinfos, i);
507 signers = sk_X509_new_null();
511 if (!sk_X509_push(signers, si->signer))
513 sk_X509_free(signers);
521 void CMS_SignerInfo_set1_signer_cert(CMS_SignerInfo *si, X509 *signer)
525 CRYPTO_add(&signer->references, 1, CRYPTO_LOCK_X509);
527 EVP_PKEY_free(si->pkey);
528 si->pkey = X509_get_pubkey(signer);
531 X509_free(si->signer);
535 int CMS_SignerInfo_get0_signer_id(CMS_SignerInfo *si,
536 ASN1_OCTET_STRING **keyid,
537 X509_NAME **issuer, ASN1_INTEGER **sno)
539 return cms_SignerIdentifier_get0_signer_id(si->sid, keyid, issuer, sno);
542 int CMS_SignerInfo_cert_cmp(CMS_SignerInfo *si, X509 *cert)
544 return cms_SignerIdentifier_cert_cmp(si->sid, cert);
547 int CMS_set1_signers_certs(CMS_ContentInfo *cms, STACK_OF(X509) *scerts,
552 CMS_CertificateChoices *cch;
553 STACK_OF(CMS_CertificateChoices) *certs;
557 sd = cms_get0_signed(cms);
560 certs = sd->certificates;
561 for (i = 0; i < sk_CMS_SignerInfo_num(sd->signerInfos); i++)
563 si = sk_CMS_SignerInfo_value(sd->signerInfos, i);
567 for (j = 0; j < sk_X509_num(scerts); j++)
569 x = sk_X509_value(scerts, j);
570 if (CMS_SignerInfo_cert_cmp(si, x) == 0)
572 CMS_SignerInfo_set1_signer_cert(si, x);
578 if (si->signer || (flags & CMS_NOINTERN))
581 for (j = 0; j < sk_CMS_CertificateChoices_num(certs); j++)
583 cch = sk_CMS_CertificateChoices_value(certs, j);
586 x = cch->d.certificate;
587 if (CMS_SignerInfo_cert_cmp(si, x) == 0)
589 CMS_SignerInfo_set1_signer_cert(si, x);
598 void CMS_SignerInfo_get0_algs(CMS_SignerInfo *si, EVP_PKEY **pk, X509 **signer,
599 X509_ALGOR **pdig, X509_ALGOR **psig)
604 *signer = si->signer;
606 *pdig = si->digestAlgorithm;
608 *psig = si->signatureAlgorithm;
611 int cms_SignerInfo_content_sign(CMS_SignerInfo *si, BIO *chain)
615 EVP_MD_CTX_init(&mctx);
620 CMSerr(CMS_F_CMS_SIGNERINFO_CONTENT_SIGN, CMS_R_NO_PRIVATE_KEY);
624 if (!cms_DigestAlgorithm_find_ctx(&mctx, chain, si->digestAlgorithm))
627 /* If any signed attributes calculate and add messageDigest attribute */
629 if (CMS_signed_get_attr_count(si) >= 0)
631 unsigned char md[EVP_MAX_MD_SIZE];
633 EVP_DigestFinal_ex(&mctx, md, &mdlen);
634 if (!CMS_signed_add1_attr_by_NID(si, NID_pkcs9_messageDigest,
638 if (!CMS_SignerInfo_sign(si))
645 sig = OPENSSL_malloc(EVP_PKEY_size(si->pkey));
648 CMSerr(CMS_F_CMS_SIGNERINFO_CONTENT_SIGN,
649 ERR_R_MALLOC_FAILURE);
652 if (!EVP_SignFinal(&mctx, sig, &siglen, si->pkey))
654 CMSerr(CMS_F_CMS_SIGNERINFO_CONTENT_SIGN,
655 CMS_R_SIGNFINAL_ERROR);
659 ASN1_STRING_set0(si->signature, sig, siglen);
665 EVP_MD_CTX_cleanup(&mctx);
670 int cms_SignedData_final(CMS_ContentInfo *cms, BIO *chain)
672 STACK_OF(CMS_SignerInfo) *sinfos;
675 sinfos = CMS_get0_SignerInfos(cms);
676 for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++)
678 si = sk_CMS_SignerInfo_value(sinfos, i);
679 if (!cms_SignerInfo_content_sign(si, chain))
685 int CMS_SignerInfo_sign(CMS_SignerInfo *si)
689 unsigned char *abuf = NULL;
692 const EVP_MD *md = NULL;
694 md = EVP_get_digestbyobj(si->digestAlgorithm->algorithm);
698 EVP_MD_CTX_init(&mctx);
700 if (CMS_signed_get_attr_by_NID(si, NID_pkcs9_signingTime, -1) < 0)
702 if (!CMS_add1_signingTime(si, NULL))
706 if (EVP_DigestSignInit(&mctx, &pctx, md, NULL, si->pkey) <= 0)
709 if (EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_SIGN,
710 EVP_PKEY_CTRL_CMS_SIGN, 0, si) <= 0)
712 CMSerr(CMS_F_CMS_SIGNERINFO_SIGN, CMS_R_CTRL_ERROR);
716 alen = ASN1_item_i2d((ASN1_VALUE *)si->signedAttrs,&abuf,
717 ASN1_ITEM_rptr(CMS_Attributes_Sign));
720 if (EVP_DigestSignUpdate(&mctx, abuf, alen) <= 0)
722 if (EVP_DigestSignFinal(&mctx, NULL, &siglen) <= 0)
725 abuf = OPENSSL_malloc(siglen);
728 if (EVP_DigestSignFinal(&mctx, abuf, &siglen) <= 0)
731 if (EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_SIGN,
732 EVP_PKEY_CTRL_CMS_SIGN, 1, si) <= 0)
734 CMSerr(CMS_F_CMS_SIGNERINFO_SIGN, CMS_R_CTRL_ERROR);
738 EVP_MD_CTX_cleanup(&mctx);
740 ASN1_STRING_set0(si->signature, abuf, siglen);
747 EVP_MD_CTX_cleanup(&mctx);
752 int CMS_SignerInfo_verify(CMS_SignerInfo *si)
756 unsigned char *abuf = NULL;
758 const EVP_MD *md = NULL;
762 CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY, CMS_R_NO_PUBLIC_KEY);
766 md = EVP_get_digestbyobj(si->digestAlgorithm->algorithm);
769 EVP_MD_CTX_init(&mctx);
770 if (EVP_DigestVerifyInit(&mctx, &pctx, md, NULL, si->pkey) <= 0)
773 alen = ASN1_item_i2d((ASN1_VALUE *)si->signedAttrs,&abuf,
774 ASN1_ITEM_rptr(CMS_Attributes_Verify));
777 r = EVP_DigestVerifyUpdate(&mctx, abuf, alen);
784 r = EVP_DigestVerifyFinal(&mctx,
785 si->signature->data, si->signature->length);
787 CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY, CMS_R_VERIFICATION_FAILURE);
789 EVP_MD_CTX_cleanup(&mctx);
793 /* Create a chain of digest BIOs from a CMS ContentInfo */
795 BIO *cms_SignedData_init_bio(CMS_ContentInfo *cms)
800 sd = cms_get0_signed(cms);
803 cms_sd_set_version(sd);
804 for (i = 0; i < sk_X509_ALGOR_num(sd->digestAlgorithms); i++)
806 X509_ALGOR *digestAlgorithm;
808 digestAlgorithm = sk_X509_ALGOR_value(sd->digestAlgorithms, i);
809 mdbio = cms_DigestAlgorithm_init_bio(digestAlgorithm);
813 BIO_push(chain, mdbio);
824 int CMS_SignerInfo_verify_content(CMS_SignerInfo *si, BIO *chain)
826 ASN1_OCTET_STRING *os = NULL;
829 EVP_MD_CTX_init(&mctx);
830 /* If we have any signed attributes look for messageDigest value */
831 if (CMS_signed_get_attr_count(si) >= 0)
833 os = CMS_signed_get0_data_by_OBJ(si,
834 OBJ_nid2obj(NID_pkcs9_messageDigest),
835 -3, V_ASN1_OCTET_STRING);
838 CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT,
839 CMS_R_ERROR_READING_MESSAGEDIGEST_ATTRIBUTE);
844 if (!cms_DigestAlgorithm_find_ctx(&mctx, chain, si->digestAlgorithm))
847 /* If messageDigest found compare it */
851 unsigned char mval[EVP_MAX_MD_SIZE];
853 if (EVP_DigestFinal_ex(&mctx, mval, &mlen) <= 0)
855 CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT,
856 CMS_R_UNABLE_TO_FINALIZE_CONTEXT);
859 if (mlen != os->length)
861 CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT,
862 CMS_R_MESSAGEDIGEST_ATTRIBUTE_WRONG_LENGTH);
866 if (memcmp(mval, os->data, mlen))
868 CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT,
869 CMS_R_VERIFICATION_FAILURE);
877 r = EVP_VerifyFinal(&mctx, si->signature->data,
878 si->signature->length, si->pkey);
881 CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT,
882 CMS_R_VERIFICATION_FAILURE);
888 EVP_MD_CTX_cleanup(&mctx);
893 int CMS_add_smimecap(CMS_SignerInfo *si, STACK_OF(X509_ALGOR) *algs)
895 unsigned char *smder = NULL;
897 smderlen = i2d_X509_ALGORS(algs, &smder);
900 r = CMS_signed_add1_attr_by_NID(si, NID_SMIMECapabilities,
901 V_ASN1_SEQUENCE, smder, smderlen);
906 int CMS_add_simple_smimecap(STACK_OF(X509_ALGOR) **algs,
907 int algnid, int keysize)
910 ASN1_INTEGER *key = NULL;
913 key = ASN1_INTEGER_new();
914 if (!key || !ASN1_INTEGER_set(key, keysize))
917 alg = X509_ALGOR_new();
921 ASN1_INTEGER_free(key);
925 X509_ALGOR_set0(alg, OBJ_nid2obj(algnid),
926 key ? V_ASN1_INTEGER : V_ASN1_UNDEF, key);
928 *algs = sk_X509_ALGOR_new_null();
929 if (!*algs || !sk_X509_ALGOR_push(*algs, alg))
931 X509_ALGOR_free(alg);
937 /* Check to see if a cipher exists and if so add S/MIME capabilities */
939 static int cms_add_cipher_smcap(STACK_OF(X509_ALGOR) **sk, int nid, int arg)
941 if (EVP_get_cipherbynid(nid))
942 return CMS_add_simple_smimecap(sk, nid, arg);
946 static int cms_add_digest_smcap(STACK_OF(X509_ALGOR) **sk, int nid, int arg)
948 if (EVP_get_digestbynid(nid))
949 return CMS_add_simple_smimecap(sk, nid, arg);
953 int CMS_add_standard_smimecap(STACK_OF(X509_ALGOR) **smcap)
955 if (!cms_add_cipher_smcap(smcap, NID_aes_256_cbc, -1)
956 || !cms_add_digest_smcap(smcap, NID_id_GostR3411_94, -1)
957 || !cms_add_cipher_smcap(smcap, NID_id_Gost28147_89, -1)
958 || !cms_add_cipher_smcap(smcap, NID_aes_192_cbc, -1)
959 || !cms_add_cipher_smcap(smcap, NID_aes_128_cbc, -1)
960 || !cms_add_cipher_smcap(smcap, NID_des_ede3_cbc, -1)
961 || !cms_add_cipher_smcap(smcap, NID_rc2_cbc, 128)
962 || !cms_add_cipher_smcap(smcap, NID_rc2_cbc, 64)
963 || !cms_add_cipher_smcap(smcap, NID_des_cbc, -1)
964 || !cms_add_cipher_smcap(smcap, NID_rc2_cbc, 40))