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>
64 #include <openssl/x509v3.h>
66 static int add_attribute(STACK_OF(X509_ATTRIBUTE) **sk, int nid, int atrtype,
68 static ASN1_TYPE *get_attribute(STACK_OF(X509_ATTRIBUTE) *sk, int nid);
70 BIO *PKCS7_dataInit(PKCS7 *p7, BIO *bio)
73 BIO *out=NULL,*btmp=NULL;
76 const EVP_CIPHER *evp_cipher=NULL;
77 STACK_OF(X509_ALGOR) *md_sk=NULL;
78 STACK_OF(PKCS7_RECIP_INFO) *rsk=NULL;
79 X509_ALGOR *xalg=NULL;
80 PKCS7_RECIP_INFO *ri=NULL;
83 i=OBJ_obj2nid(p7->type);
84 p7->state=PKCS7_S_HEADER;
88 case NID_pkcs7_signed:
89 md_sk=p7->d.sign->md_algs;
91 case NID_pkcs7_signedAndEnveloped:
92 rsk=p7->d.signed_and_enveloped->recipientinfo;
93 md_sk=p7->d.signed_and_enveloped->md_algs;
94 xalg=p7->d.signed_and_enveloped->enc_data->algorithm;
95 evp_cipher=p7->d.signed_and_enveloped->enc_data->cipher;
96 if (evp_cipher == NULL)
98 PKCS7err(PKCS7_F_PKCS7_DATAINIT,
99 PKCS7_R_CIPHER_NOT_INITIALIZED);
103 case NID_pkcs7_enveloped:
104 rsk=p7->d.enveloped->recipientinfo;
105 xalg=p7->d.enveloped->enc_data->algorithm;
106 evp_cipher=p7->d.enveloped->enc_data->cipher;
107 if (evp_cipher == NULL)
109 PKCS7err(PKCS7_F_PKCS7_DATAINIT,
110 PKCS7_R_CIPHER_NOT_INITIALIZED);
115 PKCS7err(PKCS7_F_PKCS7_DATAINIT,PKCS7_R_UNSUPPORTED_CONTENT_TYPE);
121 for (i=0; i<sk_X509_ALGOR_num(md_sk); i++)
123 xa=sk_X509_ALGOR_value(md_sk,i);
124 if ((btmp=BIO_new(BIO_f_md())) == NULL)
126 PKCS7err(PKCS7_F_PKCS7_DATAINIT,ERR_R_BIO_LIB);
130 j=OBJ_obj2nid(xa->algorithm);
131 evp_md=EVP_get_digestbyname(OBJ_nid2sn(j));
134 PKCS7err(PKCS7_F_PKCS7_DATAINIT,PKCS7_R_UNKNOWN_DIGEST_TYPE);
138 BIO_set_md(btmp,evp_md);
147 if (evp_cipher != NULL)
149 unsigned char key[EVP_MAX_KEY_LENGTH];
150 unsigned char iv[EVP_MAX_IV_LENGTH];
156 if ((btmp=BIO_new(BIO_f_cipher())) == NULL)
158 PKCS7err(PKCS7_F_PKCS7_DATAINIT,ERR_R_BIO_LIB);
161 BIO_get_cipher_ctx(btmp, &ctx);
162 keylen=EVP_CIPHER_key_length(evp_cipher);
163 ivlen=EVP_CIPHER_iv_length(evp_cipher);
164 if (RAND_bytes(key,keylen) <= 0)
166 xalg->algorithm = OBJ_nid2obj(EVP_CIPHER_type(evp_cipher));
167 if (ivlen > 0) RAND_pseudo_bytes(iv,ivlen);
168 EVP_CipherInit(ctx, evp_cipher, key, iv, 1);
171 if (xalg->parameter == NULL)
172 xalg->parameter=ASN1_TYPE_new();
173 if(EVP_CIPHER_param_to_asn1(ctx, xalg->parameter) < 0)
177 /* Lets do the pub key stuff :-) */
179 for (i=0; i<sk_PKCS7_RECIP_INFO_num(rsk); i++)
181 ri=sk_PKCS7_RECIP_INFO_value(rsk,i);
182 if (ri->cert == NULL)
184 PKCS7err(PKCS7_F_PKCS7_DATAINIT,PKCS7_R_MISSING_CERIPEND_INFO);
187 pkey=X509_get_pubkey(ri->cert);
188 jj=EVP_PKEY_size(pkey);
190 if (max < jj) max=jj;
192 if ((tmp=(unsigned char *)OPENSSL_malloc(max)) == NULL)
194 PKCS7err(PKCS7_F_PKCS7_DATAINIT,ERR_R_MALLOC_FAILURE);
197 for (i=0; i<sk_PKCS7_RECIP_INFO_num(rsk); i++)
199 ri=sk_PKCS7_RECIP_INFO_value(rsk,i);
200 pkey=X509_get_pubkey(ri->cert);
201 jj=EVP_PKEY_encrypt(tmp,key,keylen,pkey);
205 PKCS7err(PKCS7_F_PKCS7_DATAINIT,ERR_R_EVP_LIB);
209 M_ASN1_OCTET_STRING_set(ri->enc_key,tmp,jj);
212 memset(key, 0, keylen);
222 if (PKCS7_is_detached(p7))
223 bio=BIO_new(BIO_s_null());
225 if (PKCS7_type_is_signed(p7) &&
226 PKCS7_type_is_data(p7->d.sign->contents)) {
227 ASN1_OCTET_STRING *os;
228 os=p7->d.sign->contents->d.data;
229 if (os->length > 0) bio =
230 BIO_new_mem_buf(os->data, os->length);
233 bio=BIO_new(BIO_s_mem());
234 BIO_set_mem_eof_return(bio,0);
253 BIO *PKCS7_dataDecode(PKCS7 *p7, EVP_PKEY *pkey, BIO *in_bio, X509 *pcert)
256 BIO *out=NULL,*btmp=NULL,*etmp=NULL,*bio=NULL;
257 unsigned char *tmp=NULL;
259 ASN1_OCTET_STRING *data_body=NULL;
260 const EVP_MD *evp_md;
261 const EVP_CIPHER *evp_cipher=NULL;
262 EVP_CIPHER_CTX *evp_ctx=NULL;
263 X509_ALGOR *enc_alg=NULL;
264 STACK_OF(X509_ALGOR) *md_sk=NULL;
265 STACK_OF(PKCS7_RECIP_INFO) *rsk=NULL;
266 X509_ALGOR *xalg=NULL;
267 PKCS7_RECIP_INFO *ri=NULL;
269 i=OBJ_obj2nid(p7->type);
270 p7->state=PKCS7_S_HEADER;
274 case NID_pkcs7_signed:
275 data_body=p7->d.sign->contents->d.data;
276 md_sk=p7->d.sign->md_algs;
278 case NID_pkcs7_signedAndEnveloped:
279 rsk=p7->d.signed_and_enveloped->recipientinfo;
280 md_sk=p7->d.signed_and_enveloped->md_algs;
281 data_body=p7->d.signed_and_enveloped->enc_data->enc_data;
282 enc_alg=p7->d.signed_and_enveloped->enc_data->algorithm;
283 evp_cipher=EVP_get_cipherbyname(OBJ_nid2sn(OBJ_obj2nid(enc_alg->algorithm)));
284 if (evp_cipher == NULL)
286 PKCS7err(PKCS7_F_PKCS7_DATADECODE,PKCS7_R_UNSUPPORTED_CIPHER_TYPE);
289 xalg=p7->d.signed_and_enveloped->enc_data->algorithm;
291 case NID_pkcs7_enveloped:
292 rsk=p7->d.enveloped->recipientinfo;
293 enc_alg=p7->d.enveloped->enc_data->algorithm;
294 data_body=p7->d.enveloped->enc_data->enc_data;
295 evp_cipher=EVP_get_cipherbyname(OBJ_nid2sn(OBJ_obj2nid(enc_alg->algorithm)));
296 if (evp_cipher == NULL)
298 PKCS7err(PKCS7_F_PKCS7_DATADECODE,PKCS7_R_UNSUPPORTED_CIPHER_TYPE);
301 xalg=p7->d.enveloped->enc_data->algorithm;
304 PKCS7err(PKCS7_F_PKCS7_DATADECODE,PKCS7_R_UNSUPPORTED_CONTENT_TYPE);
308 /* We will be checking the signature */
311 for (i=0; i<sk_X509_ALGOR_num(md_sk); i++)
313 xa=sk_X509_ALGOR_value(md_sk,i);
314 if ((btmp=BIO_new(BIO_f_md())) == NULL)
316 PKCS7err(PKCS7_F_PKCS7_DATADECODE,ERR_R_BIO_LIB);
320 j=OBJ_obj2nid(xa->algorithm);
321 evp_md=EVP_get_digestbyname(OBJ_nid2sn(j));
324 PKCS7err(PKCS7_F_PKCS7_DATADECODE,PKCS7_R_UNKNOWN_DIGEST_TYPE);
328 BIO_set_md(btmp,evp_md);
337 if (evp_cipher != NULL)
340 unsigned char key[EVP_MAX_KEY_LENGTH];
341 unsigned char iv[EVP_MAX_IV_LENGTH];
349 if ((etmp=BIO_new(BIO_f_cipher())) == NULL)
351 PKCS7err(PKCS7_F_PKCS7_DATADECODE,ERR_R_BIO_LIB);
355 /* It was encrypted, we need to decrypt the secret key
356 * with the private key */
358 /* Find the recipientInfo which matches the passed certificate
362 for (i=0; i<sk_PKCS7_RECIP_INFO_num(rsk); i++) {
363 ri=sk_PKCS7_RECIP_INFO_value(rsk,i);
364 if(!X509_NAME_cmp(ri->issuer_and_serial->issuer,
365 pcert->cert_info->issuer) &&
366 !M_ASN1_INTEGER_cmp(pcert->cert_info->serialNumber,
367 ri->issuer_and_serial->serial)) break;
371 PKCS7err(PKCS7_F_PKCS7_DATADECODE,
372 PKCS7_R_NO_RECIPIENT_MATCHES_CERTIFICATE);
376 jj=EVP_PKEY_size(pkey);
377 tmp=(unsigned char *)OPENSSL_malloc(jj+10);
380 PKCS7err(PKCS7_F_PKCS7_DATADECODE,ERR_R_MALLOC_FAILURE);
384 jj=EVP_PKEY_decrypt(tmp, M_ASN1_STRING_data(ri->enc_key),
385 M_ASN1_STRING_length(ri->enc_key), pkey);
388 PKCS7err(PKCS7_F_PKCS7_DATADECODE,ERR_R_EVP_LIB);
393 BIO_get_cipher_ctx(etmp,&evp_ctx);
394 EVP_CipherInit(evp_ctx,evp_cipher,NULL,NULL,0);
395 if (EVP_CIPHER_asn1_to_param(evp_ctx,enc_alg->parameter) < 0)
398 if (jj != EVP_CIPHER_CTX_key_length(evp_ctx)) {
399 /* Some S/MIME clients don't use the same key
400 * and effective key length. The key length is
401 * determined by the size of the decrypted RSA key.
403 if(!EVP_CIPHER_CTX_set_key_length(evp_ctx, jj))
405 PKCS7err(PKCS7_F_PKCS7_DATADECODE,
406 PKCS7_R_DECRYPTED_KEY_IS_WRONG_LENGTH);
410 EVP_CipherInit(evp_ctx,NULL,tmp,NULL,0);
422 if (PKCS7_is_detached(p7) || (in_bio != NULL))
429 bio=BIO_new(BIO_s_mem());
430 /* We need to set this so that when we have read all
431 * the data, the encrypt BIO, if present, will read
432 * EOF and encode the last few bytes */
433 BIO_set_mem_eof_return(bio,0);
435 if (data_body->length > 0)
436 BIO_write(bio,(char *)data_body->data,data_body->length);
438 if (data_body->length > 0)
439 bio = BIO_new_mem_buf(data_body->data,data_body->length);
441 bio=BIO_new(BIO_s_mem());
442 BIO_set_mem_eof_return(bio,0);
452 if (out != NULL) BIO_free_all(out);
453 if (btmp != NULL) BIO_free_all(btmp);
454 if (etmp != NULL) BIO_free_all(etmp);
455 if (bio != NULL) BIO_free_all(bio);
463 int PKCS7_dataFinal(PKCS7 *p7, BIO *bio)
468 BUF_MEM *buf_mem=NULL;
470 PKCS7_SIGNER_INFO *si;
471 EVP_MD_CTX *mdc,ctx_tmp;
472 STACK_OF(X509_ATTRIBUTE) *sk;
473 STACK_OF(PKCS7_SIGNER_INFO) *si_sk=NULL;
474 ASN1_OCTET_STRING *os=NULL;
476 i=OBJ_obj2nid(p7->type);
477 p7->state=PKCS7_S_HEADER;
481 case NID_pkcs7_signedAndEnveloped:
482 /* XXXXXXXXXXXXXXXX */
483 si_sk=p7->d.signed_and_enveloped->signer_info;
484 os=M_ASN1_OCTET_STRING_new();
485 p7->d.signed_and_enveloped->enc_data->enc_data=os;
487 case NID_pkcs7_enveloped:
488 /* XXXXXXXXXXXXXXXX */
489 os=M_ASN1_OCTET_STRING_new();
490 p7->d.enveloped->enc_data->enc_data=os;
492 case NID_pkcs7_signed:
493 si_sk=p7->d.sign->signer_info;
494 os=p7->d.sign->contents->d.data;
495 /* If detached data then the content is excluded */
497 M_ASN1_OCTET_STRING_free(os);
498 p7->d.sign->contents->d.data = NULL;
505 if ((buf=BUF_MEM_new()) == NULL)
507 PKCS7err(PKCS7_F_PKCS7_DATASIGN,ERR_R_BIO_LIB);
510 for (i=0; i<sk_PKCS7_SIGNER_INFO_num(si_sk); i++)
512 si=sk_PKCS7_SIGNER_INFO_value(si_sk,i);
513 if (si->pkey == NULL) continue;
515 j=OBJ_obj2nid(si->digest_alg->algorithm);
520 if ((btmp=BIO_find_type(btmp,BIO_TYPE_MD))
523 PKCS7err(PKCS7_F_PKCS7_DATASIGN,PKCS7_R_UNABLE_TO_FIND_MESSAGE_DIGEST);
526 BIO_get_md_ctx(btmp,&mdc);
529 PKCS7err(PKCS7_F_PKCS7_DATASIGN,ERR_R_INTERNAL_ERROR);
532 if (EVP_MD_CTX_type(mdc) == j)
538 /* We now have the EVP_MD_CTX, lets do the
540 EVP_MD_CTX_init(&ctx_tmp);
541 EVP_MD_CTX_copy_ex(&ctx_tmp,mdc);
542 if (!BUF_MEM_grow(buf,EVP_PKEY_size(si->pkey)))
544 PKCS7err(PKCS7_F_PKCS7_DATASIGN,ERR_R_BIO_LIB);
550 /* If there are attributes, we add the digest
551 * attribute and only sign the attributes */
552 if ((sk != NULL) && (sk_X509_ATTRIBUTE_num(sk) != 0))
554 unsigned char md_data[EVP_MAX_MD_SIZE], *abuf=NULL;
555 unsigned int md_len, alen;
556 ASN1_OCTET_STRING *digest;
557 ASN1_UTCTIME *sign_time;
558 const EVP_MD *md_tmp;
560 /* Add signing time */
561 sign_time=X509_gmtime_adj(NULL,0);
562 PKCS7_add_signed_attribute(si,
563 NID_pkcs9_signingTime,
564 V_ASN1_UTCTIME,sign_time);
567 md_tmp=EVP_MD_CTX_md(&ctx_tmp);
568 EVP_DigestFinal_ex(&ctx_tmp,md_data,&md_len);
569 digest=M_ASN1_OCTET_STRING_new();
570 M_ASN1_OCTET_STRING_set(digest,md_data,md_len);
571 PKCS7_add_signed_attribute(si,
572 NID_pkcs9_messageDigest,
573 V_ASN1_OCTET_STRING,digest);
575 /* Now sign the attributes */
576 EVP_SignInit_ex(&ctx_tmp,md_tmp,NULL);
577 alen = ASN1_item_i2d((ASN1_VALUE *)sk,&abuf,
578 ASN1_ITEM_rptr(PKCS7_ATTR_SIGN));
580 EVP_SignUpdate(&ctx_tmp,abuf,alen);
584 #ifndef OPENSSL_NO_DSA
585 if (si->pkey->type == EVP_PKEY_DSA)
586 ctx_tmp.digest=EVP_dss1();
589 if (!EVP_SignFinal(&ctx_tmp,(unsigned char *)buf->data,
590 (unsigned int *)&buf->length,si->pkey))
592 PKCS7err(PKCS7_F_PKCS7_DATASIGN,ERR_R_EVP_LIB);
595 if (!ASN1_STRING_set(si->enc_digest,
596 (unsigned char *)buf->data,buf->length))
598 PKCS7err(PKCS7_F_PKCS7_DATASIGN,ERR_R_ASN1_LIB);
604 if (!PKCS7_is_detached(p7))
606 btmp=BIO_find_type(bio,BIO_TYPE_MEM);
609 PKCS7err(PKCS7_F_PKCS7_DATASIGN,PKCS7_R_UNABLE_TO_FIND_MEM_BIO);
612 BIO_get_mem_ptr(btmp,&buf_mem);
613 /* Mark the BIO read only then we can use its copy of the data
614 * instead of making an extra copy.
616 BIO_set_flags(btmp, BIO_FLAGS_MEM_RDONLY);
617 BIO_set_mem_eof_return(btmp, 0);
618 os->data = (unsigned char *)buf_mem->data;
619 os->length = buf_mem->length;
621 M_ASN1_OCTET_STRING_set(os,
622 (unsigned char *)buf_mem->data,buf_mem->length);
627 EVP_MD_CTX_cleanup(&ctx_tmp);
628 if (buf != NULL) BUF_MEM_free(buf);
632 int PKCS7_dataVerify(X509_STORE *cert_store, X509_STORE_CTX *ctx, BIO *bio,
633 PKCS7 *p7, PKCS7_SIGNER_INFO *si)
635 PKCS7_ISSUER_AND_SERIAL *ias;
637 STACK_OF(X509) *cert;
640 if (PKCS7_type_is_signed(p7))
642 cert=p7->d.sign->cert;
644 else if (PKCS7_type_is_signedAndEnveloped(p7))
646 cert=p7->d.signed_and_enveloped->cert;
650 PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,PKCS7_R_WRONG_PKCS7_TYPE);
653 /* XXXXXXXXXXXXXXXXXXXXXXX */
654 ias=si->issuer_and_serial;
656 x509=X509_find_by_issuer_and_serial(cert,ias->issuer,ias->serial);
658 /* were we able to find the cert in passed to us */
661 PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,PKCS7_R_UNABLE_TO_FIND_CERTIFICATE);
666 if(!X509_STORE_CTX_init(ctx,cert_store,x509,cert))
668 PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,ERR_R_X509_LIB);
671 X509_STORE_CTX_set_purpose(ctx, X509_PURPOSE_SMIME_SIGN);
672 i=X509_verify_cert(ctx);
675 PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,ERR_R_X509_LIB);
676 X509_STORE_CTX_cleanup(ctx);
679 X509_STORE_CTX_cleanup(ctx);
681 return PKCS7_signatureVerify(bio, p7, si, x509);
686 int PKCS7_signatureVerify(BIO *bio, PKCS7 *p7, PKCS7_SIGNER_INFO *si,
689 ASN1_OCTET_STRING *os;
690 EVP_MD_CTX mdc_tmp,*mdc;
693 STACK_OF(X509_ATTRIBUTE) *sk;
697 EVP_MD_CTX_init(&mdc_tmp);
699 if (!PKCS7_type_is_signed(p7) &&
700 !PKCS7_type_is_signedAndEnveloped(p7)) {
701 PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY,
702 PKCS7_R_WRONG_PKCS7_TYPE);
706 md_type=OBJ_obj2nid(si->digest_alg->algorithm);
711 if ((btmp == NULL) ||
712 ((btmp=BIO_find_type(btmp,BIO_TYPE_MD)) == NULL))
714 PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY,
715 PKCS7_R_UNABLE_TO_FIND_MESSAGE_DIGEST);
718 BIO_get_md_ctx(btmp,&mdc);
721 PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY,
722 ERR_R_INTERNAL_ERROR);
725 if (EVP_MD_CTX_type(mdc) == md_type)
730 /* mdc is the digest ctx that we want, unless there are attributes,
731 * in which case the digest is the signed attributes */
732 EVP_MD_CTX_copy_ex(&mdc_tmp,mdc);
735 if ((sk != NULL) && (sk_X509_ATTRIBUTE_num(sk) != 0))
737 unsigned char md_dat[EVP_MAX_MD_SIZE], *abuf = NULL;
738 unsigned int md_len, alen;
739 ASN1_OCTET_STRING *message_digest;
741 EVP_DigestFinal_ex(&mdc_tmp,md_dat,&md_len);
742 message_digest=PKCS7_digest_from_attributes(sk);
745 PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY,
746 PKCS7_R_UNABLE_TO_FIND_MESSAGE_DIGEST);
749 if ((message_digest->length != (int)md_len) ||
750 (memcmp(message_digest->data,md_dat,md_len)))
755 for (ii=0; ii<message_digest->length; ii++)
756 printf("%02X",message_digest->data[ii]); printf(" sent\n");
757 for (ii=0; ii<md_len; ii++) printf("%02X",md_dat[ii]); printf(" calc\n");
760 PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY,
761 PKCS7_R_DIGEST_FAILURE);
766 EVP_VerifyInit_ex(&mdc_tmp,EVP_get_digestbynid(md_type), NULL);
768 alen = ASN1_item_i2d((ASN1_VALUE *)sk, &abuf,
769 ASN1_ITEM_rptr(PKCS7_ATTR_VERIFY));
770 EVP_VerifyUpdate(&mdc_tmp, abuf, alen);
776 pkey = X509_get_pubkey(x509);
782 #ifndef OPENSSL_NO_DSA
783 if(pkey->type == EVP_PKEY_DSA) mdc_tmp.digest=EVP_dss1();
786 i=EVP_VerifyFinal(&mdc_tmp,os->data,os->length, pkey);
790 PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY,
791 PKCS7_R_SIGNATURE_FAILURE);
798 EVP_MD_CTX_cleanup(&mdc_tmp);
802 PKCS7_ISSUER_AND_SERIAL *PKCS7_get_issuer_and_serial(PKCS7 *p7, int idx)
804 STACK_OF(PKCS7_RECIP_INFO) *rsk;
805 PKCS7_RECIP_INFO *ri;
808 i=OBJ_obj2nid(p7->type);
809 if (i != NID_pkcs7_signedAndEnveloped) return(NULL);
810 rsk=p7->d.signed_and_enveloped->recipientinfo;
811 ri=sk_PKCS7_RECIP_INFO_value(rsk,0);
812 if (sk_PKCS7_RECIP_INFO_num(rsk) <= idx) return(NULL);
813 ri=sk_PKCS7_RECIP_INFO_value(rsk,idx);
814 return(ri->issuer_and_serial);
817 ASN1_TYPE *PKCS7_get_signed_attribute(PKCS7_SIGNER_INFO *si, int nid)
819 return(get_attribute(si->auth_attr,nid));
822 ASN1_TYPE *PKCS7_get_attribute(PKCS7_SIGNER_INFO *si, int nid)
824 return(get_attribute(si->unauth_attr,nid));
827 static ASN1_TYPE *get_attribute(STACK_OF(X509_ATTRIBUTE) *sk, int nid)
834 if (!o || !sk) return(NULL);
835 for (i=0; i<sk_X509_ATTRIBUTE_num(sk); i++)
837 xa=sk_X509_ATTRIBUTE_value(sk,i);
838 if (OBJ_cmp(xa->object,o) == 0)
840 if (!xa->single && sk_ASN1_TYPE_num(xa->value.set))
841 return(sk_ASN1_TYPE_value(xa->value.set,0));
849 ASN1_OCTET_STRING *PKCS7_digest_from_attributes(STACK_OF(X509_ATTRIBUTE) *sk)
852 if(!(astype = get_attribute(sk, NID_pkcs9_messageDigest))) return NULL;
853 return astype->value.octet_string;
856 int PKCS7_set_signed_attributes(PKCS7_SIGNER_INFO *p7si,
857 STACK_OF(X509_ATTRIBUTE) *sk)
861 if (p7si->auth_attr != NULL)
862 sk_X509_ATTRIBUTE_pop_free(p7si->auth_attr,X509_ATTRIBUTE_free);
863 p7si->auth_attr=sk_X509_ATTRIBUTE_dup(sk);
864 for (i=0; i<sk_X509_ATTRIBUTE_num(sk); i++)
866 if ((sk_X509_ATTRIBUTE_set(p7si->auth_attr,i,
867 X509_ATTRIBUTE_dup(sk_X509_ATTRIBUTE_value(sk,i))))
874 int PKCS7_set_attributes(PKCS7_SIGNER_INFO *p7si, STACK_OF(X509_ATTRIBUTE) *sk)
878 if (p7si->unauth_attr != NULL)
879 sk_X509_ATTRIBUTE_pop_free(p7si->unauth_attr,
880 X509_ATTRIBUTE_free);
881 p7si->unauth_attr=sk_X509_ATTRIBUTE_dup(sk);
882 for (i=0; i<sk_X509_ATTRIBUTE_num(sk); i++)
884 if ((sk_X509_ATTRIBUTE_set(p7si->unauth_attr,i,
885 X509_ATTRIBUTE_dup(sk_X509_ATTRIBUTE_value(sk,i))))
892 int PKCS7_add_signed_attribute(PKCS7_SIGNER_INFO *p7si, int nid, int atrtype,
895 return(add_attribute(&(p7si->auth_attr),nid,atrtype,value));
898 int PKCS7_add_attribute(PKCS7_SIGNER_INFO *p7si, int nid, int atrtype,
901 return(add_attribute(&(p7si->unauth_attr),nid,atrtype,value));
904 static int add_attribute(STACK_OF(X509_ATTRIBUTE) **sk, int nid, int atrtype,
907 X509_ATTRIBUTE *attr=NULL;
911 *sk = sk_X509_ATTRIBUTE_new_null();
913 attr=X509_ATTRIBUTE_create(nid,atrtype,value);
914 sk_X509_ATTRIBUTE_push(*sk,attr);
920 for (i=0; i<sk_X509_ATTRIBUTE_num(*sk); i++)
922 attr=sk_X509_ATTRIBUTE_value(*sk,i);
923 if (OBJ_obj2nid(attr->object) == nid)
925 X509_ATTRIBUTE_free(attr);
926 attr=X509_ATTRIBUTE_create(nid,atrtype,value);
927 sk_X509_ATTRIBUTE_set(*sk,i,attr);