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 static int PKCS7_type_is_other(PKCS7
* p7
)
74 int nid
=OBJ_obj2nid(p7
->type
);
79 case NID_pkcs7_signed
:
80 case NID_pkcs7_enveloped
:
81 case NID_pkcs7_signedAndEnveloped
:
82 case NID_pkcs7_digest
:
83 case NID_pkcs7_encrypted
:
94 static ASN1_OCTET_STRING
*PKCS7_get_octet_string(PKCS7
*p7
)
96 if ( PKCS7_type_is_data(p7
))
98 if ( PKCS7_type_is_other(p7
) && p7
->d
.other
99 && (p7
->d
.other
->type
== V_ASN1_OCTET_STRING
))
100 return p7
->d
.other
->value
.octet_string
;
104 BIO
*PKCS7_dataInit(PKCS7
*p7
, BIO
*bio
)
107 BIO
*out
=NULL
,*btmp
=NULL
;
109 const EVP_MD
*evp_md
;
110 const EVP_CIPHER
*evp_cipher
=NULL
;
111 STACK_OF(X509_ALGOR
) *md_sk
=NULL
;
112 STACK_OF(PKCS7_RECIP_INFO
) *rsk
=NULL
;
113 X509_ALGOR
*xalg
=NULL
;
114 PKCS7_RECIP_INFO
*ri
=NULL
;
117 i
=OBJ_obj2nid(p7
->type
);
118 p7
->state
=PKCS7_S_HEADER
;
122 case NID_pkcs7_signed
:
123 md_sk
=p7
->d
.sign
->md_algs
;
125 case NID_pkcs7_signedAndEnveloped
:
126 rsk
=p7
->d
.signed_and_enveloped
->recipientinfo
;
127 md_sk
=p7
->d
.signed_and_enveloped
->md_algs
;
128 xalg
=p7
->d
.signed_and_enveloped
->enc_data
->algorithm
;
129 evp_cipher
=p7
->d
.signed_and_enveloped
->enc_data
->cipher
;
130 if (evp_cipher
== NULL
)
132 PKCS7err(PKCS7_F_PKCS7_DATAINIT
,
133 PKCS7_R_CIPHER_NOT_INITIALIZED
);
137 case NID_pkcs7_enveloped
:
138 rsk
=p7
->d
.enveloped
->recipientinfo
;
139 xalg
=p7
->d
.enveloped
->enc_data
->algorithm
;
140 evp_cipher
=p7
->d
.enveloped
->enc_data
->cipher
;
141 if (evp_cipher
== NULL
)
143 PKCS7err(PKCS7_F_PKCS7_DATAINIT
,
144 PKCS7_R_CIPHER_NOT_INITIALIZED
);
149 PKCS7err(PKCS7_F_PKCS7_DATAINIT
,PKCS7_R_UNSUPPORTED_CONTENT_TYPE
);
155 for (i
=0; i
<sk_X509_ALGOR_num(md_sk
); i
++)
157 xa
=sk_X509_ALGOR_value(md_sk
,i
);
158 if ((btmp
=BIO_new(BIO_f_md())) == NULL
)
160 PKCS7err(PKCS7_F_PKCS7_DATAINIT
,ERR_R_BIO_LIB
);
164 evp_md
=EVP_get_digestbyobj(xa
->algorithm
);
167 PKCS7err(PKCS7_F_PKCS7_DATAINIT
,PKCS7_R_UNKNOWN_DIGEST_TYPE
);
171 BIO_set_md(btmp
,evp_md
);
180 if (evp_cipher
!= NULL
)
182 unsigned char key
[EVP_MAX_KEY_LENGTH
];
183 unsigned char iv
[EVP_MAX_IV_LENGTH
];
189 if ((btmp
=BIO_new(BIO_f_cipher())) == NULL
)
191 PKCS7err(PKCS7_F_PKCS7_DATAINIT
,ERR_R_BIO_LIB
);
194 BIO_get_cipher_ctx(btmp
, &ctx
);
195 keylen
=EVP_CIPHER_key_length(evp_cipher
);
196 ivlen
=EVP_CIPHER_iv_length(evp_cipher
);
197 if (RAND_bytes(key
,keylen
) <= 0)
199 xalg
->algorithm
= OBJ_nid2obj(EVP_CIPHER_type(evp_cipher
));
200 if (ivlen
> 0) RAND_pseudo_bytes(iv
,ivlen
);
201 EVP_CipherInit_ex(ctx
, evp_cipher
, NULL
, key
, iv
, 1);
204 if (xalg
->parameter
== NULL
)
205 xalg
->parameter
=ASN1_TYPE_new();
206 if(EVP_CIPHER_param_to_asn1(ctx
, xalg
->parameter
) < 0)
210 /* Lets do the pub key stuff :-) */
212 for (i
=0; i
<sk_PKCS7_RECIP_INFO_num(rsk
); i
++)
214 ri
=sk_PKCS7_RECIP_INFO_value(rsk
,i
);
215 if (ri
->cert
== NULL
)
217 PKCS7err(PKCS7_F_PKCS7_DATAINIT
,PKCS7_R_MISSING_CERIPEND_INFO
);
220 pkey
=X509_get_pubkey(ri
->cert
);
221 jj
=EVP_PKEY_size(pkey
);
223 if (max
< jj
) max
=jj
;
225 if ((tmp
=(unsigned char *)OPENSSL_malloc(max
)) == NULL
)
227 PKCS7err(PKCS7_F_PKCS7_DATAINIT
,ERR_R_MALLOC_FAILURE
);
230 for (i
=0; i
<sk_PKCS7_RECIP_INFO_num(rsk
); i
++)
232 ri
=sk_PKCS7_RECIP_INFO_value(rsk
,i
);
233 pkey
=X509_get_pubkey(ri
->cert
);
234 jj
=EVP_PKEY_encrypt(tmp
,key
,keylen
,pkey
);
238 PKCS7err(PKCS7_F_PKCS7_DATAINIT
,ERR_R_EVP_LIB
);
242 M_ASN1_OCTET_STRING_set(ri
->enc_key
,tmp
,jj
);
245 OPENSSL_cleanse(key
, keylen
);
256 if (PKCS7_is_detached(p7
))
257 bio
=BIO_new(BIO_s_null());
260 ASN1_OCTET_STRING
*os
;
261 os
= PKCS7_get_octet_string(p7
->d
.sign
->contents
);
262 if (os
&& os
->length
> 0)
263 bio
= BIO_new_mem_buf(os
->data
, os
->length
);
266 bio
=BIO_new(BIO_s_mem());
267 BIO_set_mem_eof_return(bio
,0);
286 BIO
*PKCS7_dataDecode(PKCS7
*p7
, EVP_PKEY
*pkey
, BIO
*in_bio
, X509
*pcert
)
289 BIO
*out
=NULL
,*btmp
=NULL
,*etmp
=NULL
,*bio
=NULL
;
290 unsigned char *tmp
=NULL
;
292 ASN1_OCTET_STRING
*data_body
=NULL
;
293 const EVP_MD
*evp_md
;
294 const EVP_CIPHER
*evp_cipher
=NULL
;
295 EVP_CIPHER_CTX
*evp_ctx
=NULL
;
296 X509_ALGOR
*enc_alg
=NULL
;
297 STACK_OF(X509_ALGOR
) *md_sk
=NULL
;
298 STACK_OF(PKCS7_RECIP_INFO
) *rsk
=NULL
;
299 X509_ALGOR
*xalg
=NULL
;
300 PKCS7_RECIP_INFO
*ri
=NULL
;
302 i
=OBJ_obj2nid(p7
->type
);
303 p7
->state
=PKCS7_S_HEADER
;
307 case NID_pkcs7_signed
:
308 data_body
=PKCS7_get_octet_string(p7
->d
.sign
->contents
);
309 md_sk
=p7
->d
.sign
->md_algs
;
311 case NID_pkcs7_signedAndEnveloped
:
312 rsk
=p7
->d
.signed_and_enveloped
->recipientinfo
;
313 md_sk
=p7
->d
.signed_and_enveloped
->md_algs
;
314 data_body
=p7
->d
.signed_and_enveloped
->enc_data
->enc_data
;
315 enc_alg
=p7
->d
.signed_and_enveloped
->enc_data
->algorithm
;
316 evp_cipher
=EVP_get_cipherbyobj(enc_alg
->algorithm
);
317 if (evp_cipher
== NULL
)
319 PKCS7err(PKCS7_F_PKCS7_DATADECODE
,PKCS7_R_UNSUPPORTED_CIPHER_TYPE
);
322 xalg
=p7
->d
.signed_and_enveloped
->enc_data
->algorithm
;
324 case NID_pkcs7_enveloped
:
325 rsk
=p7
->d
.enveloped
->recipientinfo
;
326 enc_alg
=p7
->d
.enveloped
->enc_data
->algorithm
;
327 data_body
=p7
->d
.enveloped
->enc_data
->enc_data
;
328 evp_cipher
=EVP_get_cipherbyobj(enc_alg
->algorithm
);
329 if (evp_cipher
== NULL
)
331 PKCS7err(PKCS7_F_PKCS7_DATADECODE
,PKCS7_R_UNSUPPORTED_CIPHER_TYPE
);
334 xalg
=p7
->d
.enveloped
->enc_data
->algorithm
;
337 PKCS7err(PKCS7_F_PKCS7_DATADECODE
,PKCS7_R_UNSUPPORTED_CONTENT_TYPE
);
341 /* We will be checking the signature */
344 for (i
=0; i
<sk_X509_ALGOR_num(md_sk
); i
++)
346 xa
=sk_X509_ALGOR_value(md_sk
,i
);
347 if ((btmp
=BIO_new(BIO_f_md())) == NULL
)
349 PKCS7err(PKCS7_F_PKCS7_DATADECODE
,ERR_R_BIO_LIB
);
353 j
=OBJ_obj2nid(xa
->algorithm
);
354 evp_md
=EVP_get_digestbynid(j
);
357 PKCS7err(PKCS7_F_PKCS7_DATADECODE
,PKCS7_R_UNKNOWN_DIGEST_TYPE
);
361 BIO_set_md(btmp
,evp_md
);
370 if (evp_cipher
!= NULL
)
373 unsigned char key
[EVP_MAX_KEY_LENGTH
];
374 unsigned char iv
[EVP_MAX_IV_LENGTH
];
382 if ((etmp
=BIO_new(BIO_f_cipher())) == NULL
)
384 PKCS7err(PKCS7_F_PKCS7_DATADECODE
,ERR_R_BIO_LIB
);
388 /* It was encrypted, we need to decrypt the secret key
389 * with the private key */
391 /* Find the recipientInfo which matches the passed certificate
395 for (i
=0; i
<sk_PKCS7_RECIP_INFO_num(rsk
); i
++) {
396 ri
=sk_PKCS7_RECIP_INFO_value(rsk
,i
);
397 if(!X509_NAME_cmp(ri
->issuer_and_serial
->issuer
,
398 pcert
->cert_info
->issuer
) &&
399 !M_ASN1_INTEGER_cmp(pcert
->cert_info
->serialNumber
,
400 ri
->issuer_and_serial
->serial
)) break;
404 PKCS7err(PKCS7_F_PKCS7_DATADECODE
,
405 PKCS7_R_NO_RECIPIENT_MATCHES_CERTIFICATE
);
409 jj
=EVP_PKEY_size(pkey
);
410 tmp
=(unsigned char *)OPENSSL_malloc(jj
+10);
413 PKCS7err(PKCS7_F_PKCS7_DATADECODE
,ERR_R_MALLOC_FAILURE
);
417 jj
=EVP_PKEY_decrypt(tmp
, M_ASN1_STRING_data(ri
->enc_key
),
418 M_ASN1_STRING_length(ri
->enc_key
), pkey
);
421 PKCS7err(PKCS7_F_PKCS7_DATADECODE
,ERR_R_EVP_LIB
);
426 BIO_get_cipher_ctx(etmp
,&evp_ctx
);
427 EVP_CipherInit_ex(evp_ctx
,evp_cipher
,NULL
,NULL
,NULL
,0);
428 if (EVP_CIPHER_asn1_to_param(evp_ctx
,enc_alg
->parameter
) < 0)
431 if (jj
!= EVP_CIPHER_CTX_key_length(evp_ctx
)) {
432 /* Some S/MIME clients don't use the same key
433 * and effective key length. The key length is
434 * determined by the size of the decrypted RSA key.
436 if(!EVP_CIPHER_CTX_set_key_length(evp_ctx
, jj
))
438 PKCS7err(PKCS7_F_PKCS7_DATADECODE
,
439 PKCS7_R_DECRYPTED_KEY_IS_WRONG_LENGTH
);
443 EVP_CipherInit_ex(evp_ctx
,NULL
,NULL
,tmp
,NULL
,0);
445 OPENSSL_cleanse(tmp
,jj
);
455 if (PKCS7_is_detached(p7
) || (in_bio
!= NULL
))
462 bio
=BIO_new(BIO_s_mem());
463 /* We need to set this so that when we have read all
464 * the data, the encrypt BIO, if present, will read
465 * EOF and encode the last few bytes */
466 BIO_set_mem_eof_return(bio
,0);
468 if (data_body
->length
> 0)
469 BIO_write(bio
,(char *)data_body
->data
,data_body
->length
);
471 if (data_body
->length
> 0)
472 bio
= BIO_new_mem_buf(data_body
->data
,data_body
->length
);
474 bio
=BIO_new(BIO_s_mem());
475 BIO_set_mem_eof_return(bio
,0);
485 if (out
!= NULL
) BIO_free_all(out
);
486 if (btmp
!= NULL
) BIO_free_all(btmp
);
487 if (etmp
!= NULL
) BIO_free_all(etmp
);
488 if (bio
!= NULL
) BIO_free_all(bio
);
496 int PKCS7_dataFinal(PKCS7
*p7
, BIO
*bio
)
501 BUF_MEM
*buf_mem
=NULL
;
503 PKCS7_SIGNER_INFO
*si
;
504 EVP_MD_CTX
*mdc
,ctx_tmp
;
505 STACK_OF(X509_ATTRIBUTE
) *sk
;
506 STACK_OF(PKCS7_SIGNER_INFO
) *si_sk
=NULL
;
507 ASN1_OCTET_STRING
*os
=NULL
;
509 EVP_MD_CTX_init(&ctx_tmp
);
510 i
=OBJ_obj2nid(p7
->type
);
511 p7
->state
=PKCS7_S_HEADER
;
515 case NID_pkcs7_signedAndEnveloped
:
516 /* XXXXXXXXXXXXXXXX */
517 si_sk
=p7
->d
.signed_and_enveloped
->signer_info
;
518 os
=M_ASN1_OCTET_STRING_new();
519 p7
->d
.signed_and_enveloped
->enc_data
->enc_data
=os
;
521 case NID_pkcs7_enveloped
:
522 /* XXXXXXXXXXXXXXXX */
523 os
=M_ASN1_OCTET_STRING_new();
524 p7
->d
.enveloped
->enc_data
->enc_data
=os
;
526 case NID_pkcs7_signed
:
527 si_sk
=p7
->d
.sign
->signer_info
;
528 os
=PKCS7_get_octet_string(p7
->d
.sign
->contents
);
529 /* If detached data then the content is excluded */
530 if(PKCS7_type_is_data(p7
->d
.sign
->contents
) && p7
->detached
) {
531 M_ASN1_OCTET_STRING_free(os
);
532 p7
->d
.sign
->contents
->d
.data
= NULL
;
539 if ((buf
=BUF_MEM_new()) == NULL
)
541 PKCS7err(PKCS7_F_PKCS7_DATASIGN
,ERR_R_BIO_LIB
);
544 for (i
=0; i
<sk_PKCS7_SIGNER_INFO_num(si_sk
); i
++)
546 si
=sk_PKCS7_SIGNER_INFO_value(si_sk
,i
);
547 if (si
->pkey
== NULL
) continue;
549 j
=OBJ_obj2nid(si
->digest_alg
->algorithm
);
554 if ((btmp
=BIO_find_type(btmp
,BIO_TYPE_MD
))
557 PKCS7err(PKCS7_F_PKCS7_DATASIGN
,PKCS7_R_UNABLE_TO_FIND_MESSAGE_DIGEST
);
560 BIO_get_md_ctx(btmp
,&mdc
);
563 PKCS7err(PKCS7_F_PKCS7_DATASIGN
,ERR_R_INTERNAL_ERROR
);
566 if (EVP_MD_CTX_type(mdc
) == j
)
572 /* We now have the EVP_MD_CTX, lets do the
574 EVP_MD_CTX_copy_ex(&ctx_tmp
,mdc
);
575 if (!BUF_MEM_grow_clean(buf
,EVP_PKEY_size(si
->pkey
)))
577 PKCS7err(PKCS7_F_PKCS7_DATASIGN
,ERR_R_BIO_LIB
);
583 /* If there are attributes, we add the digest
584 * attribute and only sign the attributes */
585 if ((sk
!= NULL
) && (sk_X509_ATTRIBUTE_num(sk
) != 0))
587 unsigned char md_data
[EVP_MAX_MD_SIZE
], *abuf
=NULL
;
588 unsigned int md_len
, alen
;
589 ASN1_OCTET_STRING
*digest
;
590 ASN1_UTCTIME
*sign_time
;
591 const EVP_MD
*md_tmp
;
593 /* Add signing time if not already present */
594 if (!PKCS7_get_signed_attribute(si
,
595 NID_pkcs9_signingTime
))
597 sign_time
=X509_gmtime_adj(NULL
,0);
598 PKCS7_add_signed_attribute(si
,
599 NID_pkcs9_signingTime
,
600 V_ASN1_UTCTIME
,sign_time
);
604 md_tmp
=EVP_MD_CTX_md(&ctx_tmp
);
605 EVP_DigestFinal_ex(&ctx_tmp
,md_data
,&md_len
);
606 digest
=M_ASN1_OCTET_STRING_new();
607 M_ASN1_OCTET_STRING_set(digest
,md_data
,md_len
);
608 PKCS7_add_signed_attribute(si
,
609 NID_pkcs9_messageDigest
,
610 V_ASN1_OCTET_STRING
,digest
);
612 /* Now sign the attributes */
613 EVP_SignInit_ex(&ctx_tmp
,md_tmp
,NULL
);
614 alen
= ASN1_item_i2d((ASN1_VALUE
*)sk
,&abuf
,
615 ASN1_ITEM_rptr(PKCS7_ATTR_SIGN
));
617 EVP_SignUpdate(&ctx_tmp
,abuf
,alen
);
621 #ifndef OPENSSL_NO_DSA
622 if (si
->pkey
->type
== EVP_PKEY_DSA
)
623 ctx_tmp
.digest
=EVP_dss1();
626 if (!EVP_SignFinal(&ctx_tmp
,(unsigned char *)buf
->data
,
627 (unsigned int *)&buf
->length
,si
->pkey
))
629 PKCS7err(PKCS7_F_PKCS7_DATASIGN
,ERR_R_EVP_LIB
);
632 if (!ASN1_STRING_set(si
->enc_digest
,
633 (unsigned char *)buf
->data
,buf
->length
))
635 PKCS7err(PKCS7_F_PKCS7_DATASIGN
,ERR_R_ASN1_LIB
);
641 if (!PKCS7_is_detached(p7
))
643 btmp
=BIO_find_type(bio
,BIO_TYPE_MEM
);
646 PKCS7err(PKCS7_F_PKCS7_DATASIGN
,PKCS7_R_UNABLE_TO_FIND_MEM_BIO
);
649 BIO_get_mem_ptr(btmp
,&buf_mem
);
650 /* Mark the BIO read only then we can use its copy of the data
651 * instead of making an extra copy.
653 BIO_set_flags(btmp
, BIO_FLAGS_MEM_RDONLY
);
654 BIO_set_mem_eof_return(btmp
, 0);
655 os
->data
= (unsigned char *)buf_mem
->data
;
656 os
->length
= buf_mem
->length
;
658 M_ASN1_OCTET_STRING_set(os
,
659 (unsigned char *)buf_mem
->data
,buf_mem
->length
);
664 EVP_MD_CTX_cleanup(&ctx_tmp
);
665 if (buf
!= NULL
) BUF_MEM_free(buf
);
669 int PKCS7_dataVerify(X509_STORE
*cert_store
, X509_STORE_CTX
*ctx
, BIO
*bio
,
670 PKCS7
*p7
, PKCS7_SIGNER_INFO
*si
)
672 PKCS7_ISSUER_AND_SERIAL
*ias
;
674 STACK_OF(X509
) *cert
;
677 if (PKCS7_type_is_signed(p7
))
679 cert
=p7
->d
.sign
->cert
;
681 else if (PKCS7_type_is_signedAndEnveloped(p7
))
683 cert
=p7
->d
.signed_and_enveloped
->cert
;
687 PKCS7err(PKCS7_F_PKCS7_DATAVERIFY
,PKCS7_R_WRONG_PKCS7_TYPE
);
690 /* XXXXXXXXXXXXXXXXXXXXXXX */
691 ias
=si
->issuer_and_serial
;
693 x509
=X509_find_by_issuer_and_serial(cert
,ias
->issuer
,ias
->serial
);
695 /* were we able to find the cert in passed to us */
698 PKCS7err(PKCS7_F_PKCS7_DATAVERIFY
,PKCS7_R_UNABLE_TO_FIND_CERTIFICATE
);
703 if(!X509_STORE_CTX_init(ctx
,cert_store
,x509
,cert
))
705 PKCS7err(PKCS7_F_PKCS7_DATAVERIFY
,ERR_R_X509_LIB
);
708 X509_STORE_CTX_set_purpose(ctx
, X509_PURPOSE_SMIME_SIGN
);
709 i
=X509_verify_cert(ctx
);
712 PKCS7err(PKCS7_F_PKCS7_DATAVERIFY
,ERR_R_X509_LIB
);
713 X509_STORE_CTX_cleanup(ctx
);
716 X509_STORE_CTX_cleanup(ctx
);
718 return PKCS7_signatureVerify(bio
, p7
, si
, x509
);
723 int PKCS7_signatureVerify(BIO
*bio
, PKCS7
*p7
, PKCS7_SIGNER_INFO
*si
,
726 ASN1_OCTET_STRING
*os
;
727 EVP_MD_CTX mdc_tmp
,*mdc
;
730 STACK_OF(X509_ATTRIBUTE
) *sk
;
734 EVP_MD_CTX_init(&mdc_tmp
);
736 if (!PKCS7_type_is_signed(p7
) &&
737 !PKCS7_type_is_signedAndEnveloped(p7
)) {
738 PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY
,
739 PKCS7_R_WRONG_PKCS7_TYPE
);
743 md_type
=OBJ_obj2nid(si
->digest_alg
->algorithm
);
748 if ((btmp
== NULL
) ||
749 ((btmp
=BIO_find_type(btmp
,BIO_TYPE_MD
)) == NULL
))
751 PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY
,
752 PKCS7_R_UNABLE_TO_FIND_MESSAGE_DIGEST
);
755 BIO_get_md_ctx(btmp
,&mdc
);
758 PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY
,
759 ERR_R_INTERNAL_ERROR
);
762 if (EVP_MD_CTX_type(mdc
) == md_type
)
764 /* Workaround for some broken clients that put the signature
765 * OID instead of the digest OID in digest_alg->algorithm
767 if (EVP_MD_pkey_type(EVP_MD_CTX_md(mdc
)) == md_type
)
772 /* mdc is the digest ctx that we want, unless there are attributes,
773 * in which case the digest is the signed attributes */
774 EVP_MD_CTX_copy_ex(&mdc_tmp
,mdc
);
777 if ((sk
!= NULL
) && (sk_X509_ATTRIBUTE_num(sk
) != 0))
779 unsigned char md_dat
[EVP_MAX_MD_SIZE
], *abuf
= NULL
;
780 unsigned int md_len
, alen
;
781 ASN1_OCTET_STRING
*message_digest
;
783 EVP_DigestFinal_ex(&mdc_tmp
,md_dat
,&md_len
);
784 message_digest
=PKCS7_digest_from_attributes(sk
);
787 PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY
,
788 PKCS7_R_UNABLE_TO_FIND_MESSAGE_DIGEST
);
791 if ((message_digest
->length
!= (int)md_len
) ||
792 (memcmp(message_digest
->data
,md_dat
,md_len
)))
797 for (ii
=0; ii
<message_digest
->length
; ii
++)
798 printf("%02X",message_digest
->data
[ii
]); printf(" sent\n");
799 for (ii
=0; ii
<md_len
; ii
++) printf("%02X",md_dat
[ii
]); printf(" calc\n");
802 PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY
,
803 PKCS7_R_DIGEST_FAILURE
);
808 EVP_VerifyInit_ex(&mdc_tmp
,EVP_get_digestbynid(md_type
), NULL
);
810 alen
= ASN1_item_i2d((ASN1_VALUE
*)sk
, &abuf
,
811 ASN1_ITEM_rptr(PKCS7_ATTR_VERIFY
));
812 EVP_VerifyUpdate(&mdc_tmp
, abuf
, alen
);
818 pkey
= X509_get_pubkey(x509
);
824 #ifndef OPENSSL_NO_DSA
825 if(pkey
->type
== EVP_PKEY_DSA
) mdc_tmp
.digest
=EVP_dss1();
828 i
=EVP_VerifyFinal(&mdc_tmp
,os
->data
,os
->length
, pkey
);
832 PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY
,
833 PKCS7_R_SIGNATURE_FAILURE
);
840 EVP_MD_CTX_cleanup(&mdc_tmp
);
844 PKCS7_ISSUER_AND_SERIAL
*PKCS7_get_issuer_and_serial(PKCS7
*p7
, int idx
)
846 STACK_OF(PKCS7_RECIP_INFO
) *rsk
;
847 PKCS7_RECIP_INFO
*ri
;
850 i
=OBJ_obj2nid(p7
->type
);
851 if (i
!= NID_pkcs7_signedAndEnveloped
) return(NULL
);
852 rsk
=p7
->d
.signed_and_enveloped
->recipientinfo
;
853 ri
=sk_PKCS7_RECIP_INFO_value(rsk
,0);
854 if (sk_PKCS7_RECIP_INFO_num(rsk
) <= idx
) return(NULL
);
855 ri
=sk_PKCS7_RECIP_INFO_value(rsk
,idx
);
856 return(ri
->issuer_and_serial
);
859 ASN1_TYPE
*PKCS7_get_signed_attribute(PKCS7_SIGNER_INFO
*si
, int nid
)
861 return(get_attribute(si
->auth_attr
,nid
));
864 ASN1_TYPE
*PKCS7_get_attribute(PKCS7_SIGNER_INFO
*si
, int nid
)
866 return(get_attribute(si
->unauth_attr
,nid
));
869 static ASN1_TYPE
*get_attribute(STACK_OF(X509_ATTRIBUTE
) *sk
, int nid
)
876 if (!o
|| !sk
) return(NULL
);
877 for (i
=0; i
<sk_X509_ATTRIBUTE_num(sk
); i
++)
879 xa
=sk_X509_ATTRIBUTE_value(sk
,i
);
880 if (OBJ_cmp(xa
->object
,o
) == 0)
882 if (!xa
->single
&& sk_ASN1_TYPE_num(xa
->value
.set
))
883 return(sk_ASN1_TYPE_value(xa
->value
.set
,0));
891 ASN1_OCTET_STRING
*PKCS7_digest_from_attributes(STACK_OF(X509_ATTRIBUTE
) *sk
)
894 if(!(astype
= get_attribute(sk
, NID_pkcs9_messageDigest
))) return NULL
;
895 return astype
->value
.octet_string
;
898 int PKCS7_set_signed_attributes(PKCS7_SIGNER_INFO
*p7si
,
899 STACK_OF(X509_ATTRIBUTE
) *sk
)
903 if (p7si
->auth_attr
!= NULL
)
904 sk_X509_ATTRIBUTE_pop_free(p7si
->auth_attr
,X509_ATTRIBUTE_free
);
905 p7si
->auth_attr
=sk_X509_ATTRIBUTE_dup(sk
);
906 for (i
=0; i
<sk_X509_ATTRIBUTE_num(sk
); i
++)
908 if ((sk_X509_ATTRIBUTE_set(p7si
->auth_attr
,i
,
909 X509_ATTRIBUTE_dup(sk_X509_ATTRIBUTE_value(sk
,i
))))
916 int PKCS7_set_attributes(PKCS7_SIGNER_INFO
*p7si
, STACK_OF(X509_ATTRIBUTE
) *sk
)
920 if (p7si
->unauth_attr
!= NULL
)
921 sk_X509_ATTRIBUTE_pop_free(p7si
->unauth_attr
,
922 X509_ATTRIBUTE_free
);
923 p7si
->unauth_attr
=sk_X509_ATTRIBUTE_dup(sk
);
924 for (i
=0; i
<sk_X509_ATTRIBUTE_num(sk
); i
++)
926 if ((sk_X509_ATTRIBUTE_set(p7si
->unauth_attr
,i
,
927 X509_ATTRIBUTE_dup(sk_X509_ATTRIBUTE_value(sk
,i
))))
934 int PKCS7_add_signed_attribute(PKCS7_SIGNER_INFO
*p7si
, int nid
, int atrtype
,
937 return(add_attribute(&(p7si
->auth_attr
),nid
,atrtype
,value
));
940 int PKCS7_add_attribute(PKCS7_SIGNER_INFO
*p7si
, int nid
, int atrtype
,
943 return(add_attribute(&(p7si
->unauth_attr
),nid
,atrtype
,value
));
946 static int add_attribute(STACK_OF(X509_ATTRIBUTE
) **sk
, int nid
, int atrtype
,
949 X509_ATTRIBUTE
*attr
=NULL
;
953 *sk
= sk_X509_ATTRIBUTE_new_null();
955 attr
=X509_ATTRIBUTE_create(nid
,atrtype
,value
);
956 sk_X509_ATTRIBUTE_push(*sk
,attr
);
962 for (i
=0; i
<sk_X509_ATTRIBUTE_num(*sk
); i
++)
964 attr
=sk_X509_ATTRIBUTE_value(*sk
,i
);
965 if (OBJ_obj2nid(attr
->object
) == nid
)
967 X509_ATTRIBUTE_free(attr
);
968 attr
=X509_ATTRIBUTE_create(nid
,atrtype
,value
);
969 sk_X509_ATTRIBUTE_set(*sk
,i
,attr
);