1 /* crypto/pkcs7/pk7_doit.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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.
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).
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.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
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)"
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
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.]
61 #include <openssl/rand.h>
62 #include <openssl/objects.h>
63 #include <openssl/x509.h>
65 static int add_attribute(STACK_OF(X509_ATTRIBUTE) **sk, int nid, int atrtype,
67 static ASN1_TYPE *get_attribute(STACK_OF(X509_ATTRIBUTE) *sk, int nid);
69 BIO *PKCS7_dataInit(PKCS7 *p7, BIO *bio)
72 BIO *out=NULL,*btmp=NULL;
75 const EVP_CIPHER *evp_cipher=NULL;
76 STACK_OF(X509_ALGOR) *md_sk=NULL;
78 X509_ALGOR *xalg=NULL;
79 PKCS7_RECIP_INFO *ri=NULL;
82 i=OBJ_obj2nid(p7->type);
83 p7->state=PKCS7_S_HEADER;
87 case NID_pkcs7_signed:
88 md_sk=p7->d.sign->md_algs;
90 case NID_pkcs7_signedAndEnveloped:
91 rsk=p7->d.signed_and_enveloped->recipientinfo;
92 md_sk=p7->d.signed_and_enveloped->md_algs;
93 xalg=p7->d.signed_and_enveloped->enc_data->algorithm;
94 evp_cipher=p7->d.signed_and_enveloped->enc_data->cipher;
95 if (evp_cipher == NULL)
97 PKCS7err(PKCS7_F_PKCS7_DATAINIT,
98 PKCS7_R_CIPHER_NOT_INITIALIZED);
102 case NID_pkcs7_enveloped:
103 rsk=p7->d.enveloped->recipientinfo;
104 xalg=p7->d.enveloped->enc_data->algorithm;
105 evp_cipher=p7->d.enveloped->enc_data->cipher;
106 if (evp_cipher == NULL)
108 PKCS7err(PKCS7_F_PKCS7_DATAINIT,
109 PKCS7_R_CIPHER_NOT_INITIALIZED);
114 PKCS7err(PKCS7_F_PKCS7_DATAINIT,PKCS7_R_UNSUPPORTED_CONTENT_TYPE);
120 for (i=0; i<sk_X509_ALGOR_num(md_sk); i++)
122 xa=sk_X509_ALGOR_value(md_sk,i);
123 if ((btmp=BIO_new(BIO_f_md())) == NULL)
125 PKCS7err(PKCS7_F_PKCS7_DATAINIT,ERR_R_BIO_LIB);
129 j=OBJ_obj2nid(xa->algorithm);
130 evp_md=EVP_get_digestbyname(OBJ_nid2sn(j));
133 PKCS7err(PKCS7_F_PKCS7_DATAINIT,PKCS7_R_UNKNOWN_DIGEST_TYPE);
137 BIO_set_md(btmp,evp_md);
146 if (evp_cipher != NULL)
148 unsigned char key[EVP_MAX_KEY_LENGTH];
149 unsigned char iv[EVP_MAX_IV_LENGTH];
155 if ((btmp=BIO_new(BIO_f_cipher())) == NULL)
157 PKCS7err(PKCS7_F_PKCS7_DATAINIT,ERR_R_BIO_LIB);
160 BIO_get_cipher_ctx(btmp, &ctx);
161 keylen=EVP_CIPHER_key_length(evp_cipher);
162 ivlen=EVP_CIPHER_iv_length(evp_cipher);
163 RAND_bytes(key,keylen);
164 xalg->algorithm = OBJ_nid2obj(EVP_CIPHER_type(evp_cipher));
165 if (ivlen > 0) RAND_bytes(iv,ivlen);
166 EVP_CipherInit(ctx, evp_cipher, key, iv, 1);
169 if (xalg->parameter == NULL)
170 xalg->parameter=ASN1_TYPE_new();
171 if(EVP_CIPHER_param_to_asn1(ctx, xalg->parameter) < 0)
175 /* Lets do the pub key stuff :-) */
177 for (i=0; i<sk_num(rsk); i++)
179 ri=(PKCS7_RECIP_INFO *)sk_value(rsk,i);
180 if (ri->cert == NULL)
182 PKCS7err(PKCS7_F_PKCS7_DATAINIT,PKCS7_R_MISSING_CERIPEND_INFO);
185 pkey=X509_get_pubkey(ri->cert);
186 jj=EVP_PKEY_size(pkey);
188 if (max < jj) max=jj;
190 if ((tmp=(unsigned char *)Malloc(max)) == NULL)
192 PKCS7err(PKCS7_F_PKCS7_DATAINIT,ERR_R_MALLOC_FAILURE);
195 for (i=0; i<sk_num(rsk); i++)
197 ri=(PKCS7_RECIP_INFO *)sk_value(rsk,i);
198 pkey=X509_get_pubkey(ri->cert);
199 jj=EVP_PKEY_encrypt(tmp,key,keylen,pkey);
203 PKCS7err(PKCS7_F_PKCS7_DATAINIT,ERR_R_EVP_LIB);
207 ASN1_OCTET_STRING_set(ri->enc_key,tmp,jj);
210 memset(key, 0, keylen);
219 if (bio == NULL) /* ??????????? */
222 bio=BIO_new(BIO_s_null());
225 bio=BIO_new(BIO_s_mem());
226 /* We need to set this so that when we have read all
227 * the data, the encrypt BIO, if present, will read
228 * EOF and encode the last few bytes */
229 BIO_set_mem_eof_return(bio,0);
231 if (PKCS7_type_is_signed(p7) &&
232 PKCS7_type_is_data(p7->d.sign->contents))
234 ASN1_OCTET_STRING *os;
236 os=p7->d.sign->contents->d.data;
238 BIO_write(bio,(char *)os->data,
258 BIO *PKCS7_dataDecode(PKCS7 *p7, EVP_PKEY *pkey, BIO *in_bio, X509 *pcert)
261 BIO *out=NULL,*btmp=NULL,*etmp=NULL,*bio=NULL;
264 ASN1_OCTET_STRING *data_body=NULL;
265 const EVP_MD *evp_md;
266 const EVP_CIPHER *evp_cipher=NULL;
267 EVP_CIPHER_CTX *evp_ctx=NULL;
268 X509_ALGOR *enc_alg=NULL;
269 STACK_OF(X509_ALGOR) *md_sk=NULL;
271 X509_ALGOR *xalg=NULL;
272 PKCS7_RECIP_INFO *ri=NULL;
273 /* EVP_PKEY *pkey; */
275 X509_STORE_CTX s_ctx;
278 i=OBJ_obj2nid(p7->type);
279 p7->state=PKCS7_S_HEADER;
283 case NID_pkcs7_signed:
284 data_body=p7->d.sign->contents->d.data;
285 md_sk=p7->d.sign->md_algs;
287 case NID_pkcs7_signedAndEnveloped:
288 rsk=p7->d.signed_and_enveloped->recipientinfo;
289 md_sk=p7->d.signed_and_enveloped->md_algs;
290 data_body=p7->d.signed_and_enveloped->enc_data->enc_data;
291 enc_alg=p7->d.signed_and_enveloped->enc_data->algorithm;
292 evp_cipher=EVP_get_cipherbyname(OBJ_nid2sn(OBJ_obj2nid(enc_alg->algorithm)));
293 if (evp_cipher == NULL)
295 PKCS7err(PKCS7_F_PKCS7_DATADECODE,PKCS7_R_UNSUPPORTED_CIPHER_TYPE);
298 xalg=p7->d.signed_and_enveloped->enc_data->algorithm;
300 case NID_pkcs7_enveloped:
301 rsk=p7->d.enveloped->recipientinfo;
302 enc_alg=p7->d.enveloped->enc_data->algorithm;
303 data_body=p7->d.enveloped->enc_data->enc_data;
304 evp_cipher=EVP_get_cipherbyname(OBJ_nid2sn(OBJ_obj2nid(enc_alg->algorithm)));
305 if (evp_cipher == NULL)
307 PKCS7err(PKCS7_F_PKCS7_DATADECODE,PKCS7_R_UNSUPPORTED_CIPHER_TYPE);
310 xalg=p7->d.enveloped->enc_data->algorithm;
313 PKCS7err(PKCS7_F_PKCS7_DATADECODE,PKCS7_R_UNSUPPORTED_CONTENT_TYPE);
317 /* We will be checking the signature */
320 for (i=0; i<sk_X509_ALGOR_num(md_sk); i++)
322 xa=sk_X509_ALGOR_value(md_sk,i);
323 if ((btmp=BIO_new(BIO_f_md())) == NULL)
325 PKCS7err(PKCS7_F_PKCS7_DATADECODE,ERR_R_BIO_LIB);
329 j=OBJ_obj2nid(xa->algorithm);
330 evp_md=EVP_get_digestbyname(OBJ_nid2sn(j));
333 PKCS7err(PKCS7_F_PKCS7_DATADECODE,PKCS7_R_UNKNOWN_DIGEST_TYPE);
337 BIO_set_md(btmp,evp_md);
346 if (evp_cipher != NULL)
349 unsigned char key[EVP_MAX_KEY_LENGTH];
350 unsigned char iv[EVP_MAX_IV_LENGTH];
358 if ((etmp=BIO_new(BIO_f_cipher())) == NULL)
360 PKCS7err(PKCS7_F_PKCS7_DATADECODE,ERR_R_BIO_LIB);
364 /* It was encrypted, we need to decrypt the secret key
365 * with the private key */
367 /* Find the recipientInfo which matches the passed certificate
371 for (i=0; i<sk_num(rsk); i++) {
372 ri=(PKCS7_RECIP_INFO *)sk_value(rsk,i);
373 if(!X509_NAME_cmp(ri->issuer_and_serial->issuer,
374 pcert->cert_info->issuer) &&
375 !ASN1_INTEGER_cmp(pcert->cert_info->serialNumber,
376 ri->issuer_and_serial->serial)) break;
380 PKCS7err(PKCS7_F_PKCS7_DATADECODE,
381 PKCS7_R_NO_RECIPIENT_MATCHES_CERTIFICATE);
385 jj=EVP_PKEY_size(pkey);
389 PKCS7err(PKCS7_F_PKCS7_DATADECODE,ERR_R_MALLOC_FAILURE);
393 jj=EVP_PKEY_decrypt((unsigned char *)tmp,
394 ASN1_STRING_data(ri->enc_key),
395 ASN1_STRING_length(ri->enc_key),
399 PKCS7err(PKCS7_F_PKCS7_DATADECODE,ERR_R_EVP_LIB);
404 BIO_get_cipher_ctx(etmp,&evp_ctx);
405 EVP_CipherInit(evp_ctx,evp_cipher,NULL,NULL,0);
406 if (EVP_CIPHER_asn1_to_param(evp_ctx,enc_alg->parameter) < 0)
409 if (jj != EVP_CIPHER_CTX_key_length(evp_ctx))
411 PKCS7err(PKCS7_F_PKCS7_DATADECODE,
412 PKCS7_R_DECRYPTED_KEY_IS_WRONG_LENGTH);
415 EVP_CipherInit(evp_ctx,NULL,(unsigned char *)tmp,NULL,0);
427 if (p7->detached || (in_bio != NULL))
433 bio=BIO_new(BIO_s_mem());
434 /* We need to set this so that when we have read all
435 * the data, the encrypt BIO, if present, will read
436 * EOF and encode the last few bytes */
437 BIO_set_mem_eof_return(bio,0);
439 if (data_body->length > 0)
440 BIO_write(bio,(char *)data_body->data,data_body->length);
448 if (out != NULL) BIO_free_all(out);
449 if (btmp != NULL) BIO_free_all(btmp);
450 if (etmp != NULL) BIO_free_all(etmp);
451 if (bio != NULL) BIO_free_all(bio);
459 int PKCS7_dataFinal(PKCS7 *p7, BIO *bio)
464 BUF_MEM *buf_mem=NULL;
466 PKCS7_SIGNER_INFO *si;
467 EVP_MD_CTX *mdc,ctx_tmp;
468 STACK_OF(X509_ATTRIBUTE) *sk;
470 unsigned char *p,*pp=NULL;
472 ASN1_OCTET_STRING *os=NULL;
474 i=OBJ_obj2nid(p7->type);
475 p7->state=PKCS7_S_HEADER;
479 case NID_pkcs7_signedAndEnveloped:
480 /* XXXXXXXXXXXXXXXX */
481 si_sk=p7->d.signed_and_enveloped->signer_info;
482 os=ASN1_OCTET_STRING_new();
483 p7->d.signed_and_enveloped->enc_data->enc_data=os;
485 case NID_pkcs7_enveloped:
486 /* XXXXXXXXXXXXXXXX */
487 os=ASN1_OCTET_STRING_new();
488 p7->d.enveloped->enc_data->enc_data=os;
490 case NID_pkcs7_signed:
491 si_sk=p7->d.sign->signer_info;
492 os=p7->d.sign->contents->d.data;
493 /* If detached data then the content is excluded */
495 ASN1_OCTET_STRING_free(os);
496 p7->d.sign->contents->d.data = NULL;
503 if ((buf=BUF_MEM_new()) == NULL)
505 PKCS7err(PKCS7_F_PKCS7_DATASIGN,ERR_R_BIO_LIB);
508 for (i=0; i<sk_num(si_sk); i++)
510 si=(PKCS7_SIGNER_INFO *)
512 if (si->pkey == NULL) continue;
514 j=OBJ_obj2nid(si->digest_alg->algorithm);
519 if ((btmp=BIO_find_type(btmp,BIO_TYPE_MD))
522 PKCS7err(PKCS7_F_PKCS7_DATASIGN,PKCS7_R_UNABLE_TO_FIND_MESSAGE_DIGEST);
525 BIO_get_md_ctx(btmp,&mdc);
528 PKCS7err(PKCS7_F_PKCS7_DATASIGN,PKCS7_R_INTERNAL_ERROR);
531 if (EVP_MD_type(EVP_MD_CTX_type(mdc)) == j)
537 /* We now have the EVP_MD_CTX, lets do the
539 memcpy(&ctx_tmp,mdc,sizeof(ctx_tmp));
540 if (!BUF_MEM_grow(buf,EVP_PKEY_size(si->pkey)))
542 PKCS7err(PKCS7_F_PKCS7_DATASIGN,ERR_R_BIO_LIB);
548 /* If there are attributes, we add the digest
549 * attribute and only sign the attributes */
550 if ((sk != NULL) && (sk_X509_ATTRIBUTE_num(sk) != 0))
552 unsigned char md_data[EVP_MAX_MD_SIZE];
554 ASN1_OCTET_STRING *digest;
555 ASN1_UTCTIME *sign_time;
556 const EVP_MD *md_tmp;
558 /* Add signing time */
559 sign_time=X509_gmtime_adj(NULL,0);
560 PKCS7_add_signed_attribute(si,
561 NID_pkcs9_signingTime,
562 V_ASN1_UTCTIME,sign_time);
565 md_tmp=EVP_MD_CTX_type(&ctx_tmp);
566 EVP_DigestFinal(&ctx_tmp,md_data,&md_len);
567 digest=ASN1_OCTET_STRING_new();
568 ASN1_OCTET_STRING_set(digest,md_data,md_len);
569 PKCS7_add_signed_attribute(si,
570 NID_pkcs9_messageDigest,
571 V_ASN1_OCTET_STRING,digest);
573 /* Now sign the mess */
574 EVP_SignInit(&ctx_tmp,md_tmp);
575 x=i2d_ASN1_SET_OF_X509_ATTRIBUTE(sk,NULL,
577 V_ASN1_SET,V_ASN1_UNIVERSAL,IS_SET);
578 pp=(unsigned char *)Malloc(x);
580 i2d_ASN1_SET_OF_X509_ATTRIBUTE(sk,&p,
582 V_ASN1_SET,V_ASN1_UNIVERSAL,IS_SET);
583 EVP_SignUpdate(&ctx_tmp,pp,x);
588 if (si->pkey->type == EVP_PKEY_DSA)
589 ctx_tmp.digest=EVP_dss1();
591 if (!EVP_SignFinal(&ctx_tmp,(unsigned char *)buf->data,
592 (unsigned int *)&buf->length,si->pkey))
594 PKCS7err(PKCS7_F_PKCS7_DATASIGN,ERR_R_EVP_LIB);
597 if (!ASN1_STRING_set(si->enc_digest,
598 (unsigned char *)buf->data,buf->length))
600 PKCS7err(PKCS7_F_PKCS7_DATASIGN,ERR_R_ASN1_LIB);
608 btmp=BIO_find_type(bio,BIO_TYPE_MEM);
611 PKCS7err(PKCS7_F_PKCS7_DATASIGN,PKCS7_R_UNABLE_TO_FIND_MEM_BIO);
614 BIO_get_mem_ptr(btmp,&buf_mem);
615 ASN1_OCTET_STRING_set(os,
616 (unsigned char *)buf_mem->data,buf_mem->length);
618 if (pp != NULL) Free(pp);
623 if (buf != NULL) BUF_MEM_free(buf);
627 int PKCS7_dataVerify(X509_STORE *cert_store, X509_STORE_CTX *ctx, BIO *bio,
628 PKCS7 *p7, PKCS7_SIGNER_INFO *si)
630 /* PKCS7_SIGNED *s; */
631 ASN1_OCTET_STRING *os;
632 EVP_MD_CTX mdc_tmp,*mdc;
633 unsigned char *pp,*p;
634 PKCS7_ISSUER_AND_SERIAL *ias;
637 STACK_OF(X509_ATTRIBUTE) *sk;
638 STACK_OF(X509) *cert;
643 if (PKCS7_type_is_signed(p7))
645 cert=p7->d.sign->cert;
647 else if (PKCS7_type_is_signedAndEnveloped(p7))
649 cert=p7->d.signed_and_enveloped->cert;
653 PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,PKCS7_R_WRONG_PKCS7_TYPE);
656 /* XXXXXXXXXXXXXXXXXXXXXXX */
657 ias=si->issuer_and_serial;
659 x509=X509_find_by_issuer_and_serial(cert,ias->issuer,ias->serial);
661 /* were we able to find the cert in passed to us */
664 PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,PKCS7_R_UNABLE_TO_FIND_CERTIFICATE);
669 X509_STORE_CTX_init(ctx,cert_store,x509,cert);
670 i=X509_verify_cert(ctx);
673 PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,ERR_R_X509_LIB);
676 X509_STORE_CTX_cleanup(ctx);
678 /* So we like 'x509', lets check the signature. */
679 md_type=OBJ_obj2nid(si->digest_alg->algorithm);
684 if ((btmp == NULL) ||
685 ((btmp=BIO_find_type(btmp,BIO_TYPE_MD)) == NULL))
687 PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,PKCS7_R_UNABLE_TO_FIND_MESSAGE_DIGEST);
690 BIO_get_md_ctx(btmp,&mdc);
693 PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,PKCS7_R_INTERNAL_ERROR);
696 if (EVP_MD_type(EVP_MD_CTX_type(mdc)) == md_type)
701 /* mdc is the digest ctx that we want, unless there are attributes,
702 * in which case the digest is the signed attributes */
703 memcpy(&mdc_tmp,mdc,sizeof(mdc_tmp));
706 if ((sk != NULL) && (sk_X509_ATTRIBUTE_num(sk) != 0))
708 unsigned char md_dat[EVP_MAX_MD_SIZE];
710 ASN1_OCTET_STRING *message_digest;
712 EVP_DigestFinal(&mdc_tmp,md_dat,&md_len);
713 message_digest=PKCS7_digest_from_attributes(sk);
716 PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,PKCS7_R_UNABLE_TO_FIND_MESSAGE_DIGEST);
719 if ((message_digest->length != (int)md_len) ||
720 (memcmp(message_digest->data,md_dat,md_len)))
725 for (ii=0; ii<message_digest->length; ii++)
726 printf("%02X",message_digest->data[ii]); printf(" sent\n");
727 for (ii=0; ii<md_len; ii++) printf("%02X",md_dat[ii]); printf(" calc\n");
730 PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,PKCS7_R_DIGEST_FAILURE);
735 EVP_VerifyInit(&mdc_tmp,EVP_get_digestbynid(md_type));
736 /* Note: when forming the encoding of the attributes we
737 * shouldn't reorder them or this will break the signature.
738 * This is done by using the IS_SEQUENCE flag.
740 i=i2d_ASN1_SET_OF_X509_ATTRIBUTE(sk,NULL,i2d_X509_ATTRIBUTE,
741 V_ASN1_SET,V_ASN1_UNIVERSAL, IS_SEQUENCE);
744 i2d_ASN1_SET_OF_X509_ATTRIBUTE(sk,&p,i2d_X509_ATTRIBUTE,
745 V_ASN1_SET,V_ASN1_UNIVERSAL, IS_SEQUENCE);
746 EVP_VerifyUpdate(&mdc_tmp,pp,i);
752 pkey = X509_get_pubkey(x509);
753 if(pkey->type == EVP_PKEY_DSA) mdc_tmp.digest=EVP_dss1();
755 i=EVP_VerifyFinal(&mdc_tmp,os->data,os->length, pkey);
759 PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,PKCS7_R_SIGNATURE_FAILURE);
769 PKCS7_ISSUER_AND_SERIAL *PKCS7_get_issuer_and_serial(PKCS7 *p7, int idx)
772 PKCS7_RECIP_INFO *ri;
775 i=OBJ_obj2nid(p7->type);
776 if (i != NID_pkcs7_signedAndEnveloped) return(NULL);
777 rsk=p7->d.signed_and_enveloped->recipientinfo;
778 ri=(PKCS7_RECIP_INFO *)sk_value(rsk,0);
779 if (sk_num(rsk) <= idx) return(NULL);
780 ri=(PKCS7_RECIP_INFO *)sk_value(rsk,idx);
781 return(ri->issuer_and_serial);
784 ASN1_TYPE *PKCS7_get_signed_attribute(PKCS7_SIGNER_INFO *si, int nid)
786 return(get_attribute(si->auth_attr,nid));
789 ASN1_TYPE *PKCS7_get_attribute(PKCS7_SIGNER_INFO *si, int nid)
791 return(get_attribute(si->unauth_attr,nid));
794 static ASN1_TYPE *get_attribute(STACK_OF(X509_ATTRIBUTE) *sk, int nid)
801 if (!o || !sk) return(NULL);
802 for (i=0; i<sk_X509_ATTRIBUTE_num(sk); i++)
804 xa=sk_X509_ATTRIBUTE_value(sk,i);
805 if (OBJ_cmp(xa->object,o) == 0)
807 if (xa->set && sk_ASN1_TYPE_num(xa->value.set))
808 return(sk_ASN1_TYPE_value(xa->value.set,0));
816 ASN1_OCTET_STRING *PKCS7_digest_from_attributes(STACK_OF(X509_ATTRIBUTE) *sk)
819 if(!(astype = get_attribute(sk, NID_pkcs9_messageDigest))) return NULL;
820 return astype->value.octet_string;
823 int PKCS7_set_signed_attributes(PKCS7_SIGNER_INFO *p7si,
824 STACK_OF(X509_ATTRIBUTE) *sk)
828 if (p7si->auth_attr != NULL)
829 sk_X509_ATTRIBUTE_pop_free(p7si->auth_attr,X509_ATTRIBUTE_free);
830 p7si->auth_attr=sk_X509_ATTRIBUTE_dup(sk);
831 for (i=0; i<sk_X509_ATTRIBUTE_num(sk); i++)
833 if ((sk_X509_ATTRIBUTE_set(p7si->auth_attr,i,
834 X509_ATTRIBUTE_dup(sk_X509_ATTRIBUTE_value(sk,i))))
841 int PKCS7_set_attributes(PKCS7_SIGNER_INFO *p7si, STACK_OF(X509_ATTRIBUTE) *sk)
845 if (p7si->unauth_attr != NULL)
846 sk_X509_ATTRIBUTE_pop_free(p7si->unauth_attr,
847 X509_ATTRIBUTE_free);
848 p7si->unauth_attr=sk_X509_ATTRIBUTE_dup(sk);
849 for (i=0; i<sk_X509_ATTRIBUTE_num(sk); i++)
851 if ((sk_X509_ATTRIBUTE_set(p7si->unauth_attr,i,
852 X509_ATTRIBUTE_dup(sk_X509_ATTRIBUTE_value(sk,i))))
859 int PKCS7_add_signed_attribute(PKCS7_SIGNER_INFO *p7si, int nid, int atrtype,
862 return(add_attribute(&(p7si->auth_attr),nid,atrtype,value));
865 int PKCS7_add_attribute(PKCS7_SIGNER_INFO *p7si, int nid, int atrtype,
868 return(add_attribute(&(p7si->unauth_attr),nid,atrtype,value));
871 static int add_attribute(STACK_OF(X509_ATTRIBUTE) **sk, int nid, int atrtype,
874 X509_ATTRIBUTE *attr=NULL;
878 *sk = sk_X509_ATTRIBUTE_new(NULL);
880 attr=X509_ATTRIBUTE_create(nid,atrtype,value);
881 sk_X509_ATTRIBUTE_push(*sk,attr);
887 for (i=0; i<sk_X509_ATTRIBUTE_num(*sk); i++)
889 attr=sk_X509_ATTRIBUTE_value(*sk,i);
890 if (OBJ_obj2nid(attr->object) == nid)
892 X509_ATTRIBUTE_free(attr);
893 attr=X509_ATTRIBUTE_create(nid,atrtype,value);
894 sk_X509_ATTRIBUTE_set(*sk,i,attr);