26a3a48d65
like Malloc, Realloc and especially Free conflict with already existing names on some operating systems or other packages. That is reason enough to change the names of the OpenSSL memory allocation macros to something that has a better chance of being unique, like prepending them with OPENSSL_. This change includes all the name changes needed throughout all C files.
937 lines
24 KiB
C
937 lines
24 KiB
C
/* crypto/pkcs7/pk7_doit.c */
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/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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* All rights reserved.
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*
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* This package is an SSL implementation written
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* by Eric Young (eay@cryptsoft.com).
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* The implementation was written so as to conform with Netscapes SSL.
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*
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* This library is free for commercial and non-commercial use as long as
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* the following conditions are aheared to. The following conditions
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* apply to all code found in this distribution, be it the RC4, RSA,
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* lhash, DES, etc., code; not just the SSL code. The SSL documentation
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* included with this distribution is covered by the same copyright terms
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* except that the holder is Tim Hudson (tjh@cryptsoft.com).
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*
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* Copyright remains Eric Young's, and as such any Copyright notices in
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* the code are not to be removed.
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* If this package is used in a product, Eric Young should be given attribution
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* as the author of the parts of the library used.
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* This can be in the form of a textual message at program startup or
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* in documentation (online or textual) provided with the package.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* "This product includes cryptographic software written by
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* Eric Young (eay@cryptsoft.com)"
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* The word 'cryptographic' can be left out if the rouines from the library
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* being used are not cryptographic related :-).
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* 4. If you include any Windows specific code (or a derivative thereof) from
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* the apps directory (application code) you must include an acknowledgement:
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* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
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*
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* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* The licence and distribution terms for any publically available version or
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* derivative of this code cannot be changed. i.e. this code cannot simply be
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* copied and put under another distribution licence
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* [including the GNU Public Licence.]
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*/
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#include <stdio.h>
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#include "cryptlib.h"
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#include <openssl/rand.h>
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#include <openssl/objects.h>
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#include <openssl/x509.h>
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#include <openssl/x509v3.h>
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static int add_attribute(STACK_OF(X509_ATTRIBUTE) **sk, int nid, int atrtype,
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void *value);
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static ASN1_TYPE *get_attribute(STACK_OF(X509_ATTRIBUTE) *sk, int nid);
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BIO *PKCS7_dataInit(PKCS7 *p7, BIO *bio)
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{
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int i,j;
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BIO *out=NULL,*btmp=NULL;
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X509_ALGOR *xa;
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const EVP_MD *evp_md;
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const EVP_CIPHER *evp_cipher=NULL;
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STACK_OF(X509_ALGOR) *md_sk=NULL;
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STACK_OF(PKCS7_RECIP_INFO) *rsk=NULL;
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X509_ALGOR *xalg=NULL;
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PKCS7_RECIP_INFO *ri=NULL;
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EVP_PKEY *pkey;
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i=OBJ_obj2nid(p7->type);
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p7->state=PKCS7_S_HEADER;
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switch (i)
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{
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case NID_pkcs7_signed:
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md_sk=p7->d.sign->md_algs;
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break;
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case NID_pkcs7_signedAndEnveloped:
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rsk=p7->d.signed_and_enveloped->recipientinfo;
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md_sk=p7->d.signed_and_enveloped->md_algs;
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xalg=p7->d.signed_and_enveloped->enc_data->algorithm;
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evp_cipher=p7->d.signed_and_enveloped->enc_data->cipher;
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if (evp_cipher == NULL)
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{
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PKCS7err(PKCS7_F_PKCS7_DATAINIT,
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PKCS7_R_CIPHER_NOT_INITIALIZED);
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goto err;
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}
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break;
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case NID_pkcs7_enveloped:
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rsk=p7->d.enveloped->recipientinfo;
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xalg=p7->d.enveloped->enc_data->algorithm;
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evp_cipher=p7->d.enveloped->enc_data->cipher;
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if (evp_cipher == NULL)
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{
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PKCS7err(PKCS7_F_PKCS7_DATAINIT,
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PKCS7_R_CIPHER_NOT_INITIALIZED);
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goto err;
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}
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break;
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default:
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PKCS7err(PKCS7_F_PKCS7_DATAINIT,PKCS7_R_UNSUPPORTED_CONTENT_TYPE);
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goto err;
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}
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if (md_sk != NULL)
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{
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for (i=0; i<sk_X509_ALGOR_num(md_sk); i++)
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{
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xa=sk_X509_ALGOR_value(md_sk,i);
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if ((btmp=BIO_new(BIO_f_md())) == NULL)
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{
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PKCS7err(PKCS7_F_PKCS7_DATAINIT,ERR_R_BIO_LIB);
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goto err;
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}
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j=OBJ_obj2nid(xa->algorithm);
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evp_md=EVP_get_digestbyname(OBJ_nid2sn(j));
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if (evp_md == NULL)
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{
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PKCS7err(PKCS7_F_PKCS7_DATAINIT,PKCS7_R_UNKNOWN_DIGEST_TYPE);
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goto err;
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}
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BIO_set_md(btmp,evp_md);
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if (out == NULL)
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out=btmp;
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else
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BIO_push(out,btmp);
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btmp=NULL;
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}
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}
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if (evp_cipher != NULL)
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{
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unsigned char key[EVP_MAX_KEY_LENGTH];
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unsigned char iv[EVP_MAX_IV_LENGTH];
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int keylen,ivlen;
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int jj,max;
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unsigned char *tmp;
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EVP_CIPHER_CTX *ctx;
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if ((btmp=BIO_new(BIO_f_cipher())) == NULL)
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{
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PKCS7err(PKCS7_F_PKCS7_DATAINIT,ERR_R_BIO_LIB);
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goto err;
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}
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BIO_get_cipher_ctx(btmp, &ctx);
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keylen=EVP_CIPHER_key_length(evp_cipher);
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ivlen=EVP_CIPHER_iv_length(evp_cipher);
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if (RAND_bytes(key,keylen) <= 0)
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goto err;
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xalg->algorithm = OBJ_nid2obj(EVP_CIPHER_type(evp_cipher));
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if (ivlen > 0) RAND_pseudo_bytes(iv,ivlen);
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EVP_CipherInit(ctx, evp_cipher, key, iv, 1);
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if (ivlen > 0) {
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if (xalg->parameter == NULL)
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xalg->parameter=ASN1_TYPE_new();
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if(EVP_CIPHER_param_to_asn1(ctx, xalg->parameter) < 0)
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goto err;
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}
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/* Lets do the pub key stuff :-) */
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max=0;
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for (i=0; i<sk_PKCS7_RECIP_INFO_num(rsk); i++)
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{
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ri=sk_PKCS7_RECIP_INFO_value(rsk,i);
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if (ri->cert == NULL)
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{
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PKCS7err(PKCS7_F_PKCS7_DATAINIT,PKCS7_R_MISSING_CERIPEND_INFO);
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goto err;
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}
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pkey=X509_get_pubkey(ri->cert);
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jj=EVP_PKEY_size(pkey);
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EVP_PKEY_free(pkey);
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if (max < jj) max=jj;
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}
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if ((tmp=(unsigned char *)OPENSSL_malloc(max)) == NULL)
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{
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PKCS7err(PKCS7_F_PKCS7_DATAINIT,ERR_R_MALLOC_FAILURE);
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goto err;
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}
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for (i=0; i<sk_PKCS7_RECIP_INFO_num(rsk); i++)
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{
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ri=sk_PKCS7_RECIP_INFO_value(rsk,i);
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pkey=X509_get_pubkey(ri->cert);
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jj=EVP_PKEY_encrypt(tmp,key,keylen,pkey);
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EVP_PKEY_free(pkey);
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if (jj <= 0)
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{
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PKCS7err(PKCS7_F_PKCS7_DATAINIT,ERR_R_EVP_LIB);
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OPENSSL_free(tmp);
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goto err;
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}
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M_ASN1_OCTET_STRING_set(ri->enc_key,tmp,jj);
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}
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OPENSSL_free(tmp);
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memset(key, 0, keylen);
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if (out == NULL)
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out=btmp;
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else
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BIO_push(out,btmp);
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btmp=NULL;
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}
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if (bio == NULL) {
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if (p7->detached)
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bio=BIO_new(BIO_s_null());
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else {
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if (PKCS7_type_is_signed(p7) &&
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PKCS7_type_is_data(p7->d.sign->contents)) {
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ASN1_OCTET_STRING *os;
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os=p7->d.sign->contents->d.data;
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if (os->length > 0) bio =
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BIO_new_mem_buf(os->data, os->length);
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}
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if(bio == NULL) {
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bio=BIO_new(BIO_s_mem());
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BIO_set_mem_eof_return(bio,0);
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}
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}
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}
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BIO_push(out,bio);
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bio=NULL;
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if (0)
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{
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err:
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if (out != NULL)
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BIO_free_all(out);
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if (btmp != NULL)
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BIO_free_all(btmp);
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out=NULL;
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}
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return(out);
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}
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/* int */
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BIO *PKCS7_dataDecode(PKCS7 *p7, EVP_PKEY *pkey, BIO *in_bio, X509 *pcert)
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{
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int i,j;
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BIO *out=NULL,*btmp=NULL,*etmp=NULL,*bio=NULL;
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unsigned char *tmp=NULL;
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X509_ALGOR *xa;
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ASN1_OCTET_STRING *data_body=NULL;
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const EVP_MD *evp_md;
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const EVP_CIPHER *evp_cipher=NULL;
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EVP_CIPHER_CTX *evp_ctx=NULL;
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X509_ALGOR *enc_alg=NULL;
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STACK_OF(X509_ALGOR) *md_sk=NULL;
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STACK_OF(PKCS7_RECIP_INFO) *rsk=NULL;
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X509_ALGOR *xalg=NULL;
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PKCS7_RECIP_INFO *ri=NULL;
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i=OBJ_obj2nid(p7->type);
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p7->state=PKCS7_S_HEADER;
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switch (i)
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{
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case NID_pkcs7_signed:
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data_body=p7->d.sign->contents->d.data;
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md_sk=p7->d.sign->md_algs;
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break;
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case NID_pkcs7_signedAndEnveloped:
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rsk=p7->d.signed_and_enveloped->recipientinfo;
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md_sk=p7->d.signed_and_enveloped->md_algs;
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data_body=p7->d.signed_and_enveloped->enc_data->enc_data;
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enc_alg=p7->d.signed_and_enveloped->enc_data->algorithm;
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evp_cipher=EVP_get_cipherbyname(OBJ_nid2sn(OBJ_obj2nid(enc_alg->algorithm)));
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if (evp_cipher == NULL)
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{
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PKCS7err(PKCS7_F_PKCS7_DATADECODE,PKCS7_R_UNSUPPORTED_CIPHER_TYPE);
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goto err;
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}
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xalg=p7->d.signed_and_enveloped->enc_data->algorithm;
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break;
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case NID_pkcs7_enveloped:
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rsk=p7->d.enveloped->recipientinfo;
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enc_alg=p7->d.enveloped->enc_data->algorithm;
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data_body=p7->d.enveloped->enc_data->enc_data;
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evp_cipher=EVP_get_cipherbyname(OBJ_nid2sn(OBJ_obj2nid(enc_alg->algorithm)));
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if (evp_cipher == NULL)
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{
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PKCS7err(PKCS7_F_PKCS7_DATADECODE,PKCS7_R_UNSUPPORTED_CIPHER_TYPE);
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goto err;
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}
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xalg=p7->d.enveloped->enc_data->algorithm;
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break;
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default:
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PKCS7err(PKCS7_F_PKCS7_DATADECODE,PKCS7_R_UNSUPPORTED_CONTENT_TYPE);
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goto err;
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}
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/* We will be checking the signature */
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if (md_sk != NULL)
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{
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for (i=0; i<sk_X509_ALGOR_num(md_sk); i++)
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{
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xa=sk_X509_ALGOR_value(md_sk,i);
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if ((btmp=BIO_new(BIO_f_md())) == NULL)
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{
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PKCS7err(PKCS7_F_PKCS7_DATADECODE,ERR_R_BIO_LIB);
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goto err;
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}
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j=OBJ_obj2nid(xa->algorithm);
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evp_md=EVP_get_digestbyname(OBJ_nid2sn(j));
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if (evp_md == NULL)
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{
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PKCS7err(PKCS7_F_PKCS7_DATADECODE,PKCS7_R_UNKNOWN_DIGEST_TYPE);
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goto err;
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}
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BIO_set_md(btmp,evp_md);
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if (out == NULL)
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out=btmp;
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else
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BIO_push(out,btmp);
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btmp=NULL;
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}
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}
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if (evp_cipher != NULL)
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{
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#if 0
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unsigned char key[EVP_MAX_KEY_LENGTH];
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unsigned char iv[EVP_MAX_IV_LENGTH];
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unsigned char *p;
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int keylen,ivlen;
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int max;
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X509_OBJECT ret;
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#endif
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int jj;
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if ((etmp=BIO_new(BIO_f_cipher())) == NULL)
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{
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PKCS7err(PKCS7_F_PKCS7_DATADECODE,ERR_R_BIO_LIB);
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goto err;
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}
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|
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/* It was encrypted, we need to decrypt the secret key
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* with the private key */
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|
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/* Find the recipientInfo which matches the passed certificate
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* (if any)
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|
*/
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for (i=0; i<sk_PKCS7_RECIP_INFO_num(rsk); i++) {
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ri=sk_PKCS7_RECIP_INFO_value(rsk,i);
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if(!X509_NAME_cmp(ri->issuer_and_serial->issuer,
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pcert->cert_info->issuer) &&
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!M_ASN1_INTEGER_cmp(pcert->cert_info->serialNumber,
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ri->issuer_and_serial->serial)) break;
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ri=NULL;
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}
|
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if (ri == NULL) {
|
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PKCS7err(PKCS7_F_PKCS7_DATADECODE,
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PKCS7_R_NO_RECIPIENT_MATCHES_CERTIFICATE);
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|
return(NULL);
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|
}
|
|
|
|
jj=EVP_PKEY_size(pkey);
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|
tmp=(unsigned char *)OPENSSL_malloc(jj+10);
|
|
if (tmp == NULL)
|
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{
|
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PKCS7err(PKCS7_F_PKCS7_DATADECODE,ERR_R_MALLOC_FAILURE);
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|
goto err;
|
|
}
|
|
|
|
jj=EVP_PKEY_decrypt(tmp, M_ASN1_STRING_data(ri->enc_key),
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M_ASN1_STRING_length(ri->enc_key), pkey);
|
|
if (jj <= 0)
|
|
{
|
|
PKCS7err(PKCS7_F_PKCS7_DATADECODE,ERR_R_EVP_LIB);
|
|
goto err;
|
|
}
|
|
|
|
evp_ctx=NULL;
|
|
BIO_get_cipher_ctx(etmp,&evp_ctx);
|
|
EVP_CipherInit(evp_ctx,evp_cipher,NULL,NULL,0);
|
|
if (EVP_CIPHER_asn1_to_param(evp_ctx,enc_alg->parameter) < 0)
|
|
return(NULL);
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|
|
|
if (jj != EVP_CIPHER_CTX_key_length(evp_ctx)) {
|
|
/* Some S/MIME clients don't use the same key
|
|
* and effective key length. The key length is
|
|
* determined by the size of the decrypted RSA key.
|
|
*/
|
|
if(!EVP_CIPHER_CTX_set_key_length(evp_ctx, jj))
|
|
{
|
|
PKCS7err(PKCS7_F_PKCS7_DATADECODE,
|
|
PKCS7_R_DECRYPTED_KEY_IS_WRONG_LENGTH);
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|
goto err;
|
|
}
|
|
}
|
|
EVP_CipherInit(evp_ctx,NULL,tmp,NULL,0);
|
|
|
|
memset(tmp,0,jj);
|
|
|
|
if (out == NULL)
|
|
out=etmp;
|
|
else
|
|
BIO_push(out,etmp);
|
|
etmp=NULL;
|
|
}
|
|
|
|
#if 1
|
|
if (p7->detached || (in_bio != NULL))
|
|
{
|
|
bio=in_bio;
|
|
}
|
|
else
|
|
{
|
|
#if 0
|
|
bio=BIO_new(BIO_s_mem());
|
|
/* We need to set this so that when we have read all
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|
* the data, the encrypt BIO, if present, will read
|
|
* EOF and encode the last few bytes */
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|
BIO_set_mem_eof_return(bio,0);
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|
|
|
if (data_body->length > 0)
|
|
BIO_write(bio,(char *)data_body->data,data_body->length);
|
|
#else
|
|
if (data_body->length > 0)
|
|
bio = BIO_new_mem_buf(data_body->data,data_body->length);
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|
else {
|
|
bio=BIO_new(BIO_s_mem());
|
|
BIO_set_mem_eof_return(bio,0);
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|
}
|
|
#endif
|
|
}
|
|
BIO_push(out,bio);
|
|
bio=NULL;
|
|
#endif
|
|
if (0)
|
|
{
|
|
err:
|
|
if (out != NULL) BIO_free_all(out);
|
|
if (btmp != NULL) BIO_free_all(btmp);
|
|
if (etmp != NULL) BIO_free_all(etmp);
|
|
if (bio != NULL) BIO_free_all(bio);
|
|
out=NULL;
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|
}
|
|
if (tmp != NULL)
|
|
OPENSSL_free(tmp);
|
|
return(out);
|
|
}
|
|
|
|
int PKCS7_dataFinal(PKCS7 *p7, BIO *bio)
|
|
{
|
|
int ret=0;
|
|
int i,j;
|
|
BIO *btmp;
|
|
BUF_MEM *buf_mem=NULL;
|
|
BUF_MEM *buf=NULL;
|
|
PKCS7_SIGNER_INFO *si;
|
|
EVP_MD_CTX *mdc,ctx_tmp;
|
|
STACK_OF(X509_ATTRIBUTE) *sk;
|
|
STACK_OF(PKCS7_SIGNER_INFO) *si_sk=NULL;
|
|
unsigned char *p,*pp=NULL;
|
|
int x;
|
|
ASN1_OCTET_STRING *os=NULL;
|
|
|
|
i=OBJ_obj2nid(p7->type);
|
|
p7->state=PKCS7_S_HEADER;
|
|
|
|
switch (i)
|
|
{
|
|
case NID_pkcs7_signedAndEnveloped:
|
|
/* XXXXXXXXXXXXXXXX */
|
|
si_sk=p7->d.signed_and_enveloped->signer_info;
|
|
os=M_ASN1_OCTET_STRING_new();
|
|
p7->d.signed_and_enveloped->enc_data->enc_data=os;
|
|
break;
|
|
case NID_pkcs7_enveloped:
|
|
/* XXXXXXXXXXXXXXXX */
|
|
os=M_ASN1_OCTET_STRING_new();
|
|
p7->d.enveloped->enc_data->enc_data=os;
|
|
break;
|
|
case NID_pkcs7_signed:
|
|
si_sk=p7->d.sign->signer_info;
|
|
os=p7->d.sign->contents->d.data;
|
|
/* If detached data then the content is excluded */
|
|
if(p7->detached) {
|
|
M_ASN1_OCTET_STRING_free(os);
|
|
p7->d.sign->contents->d.data = NULL;
|
|
}
|
|
break;
|
|
}
|
|
|
|
if (si_sk != NULL)
|
|
{
|
|
if ((buf=BUF_MEM_new()) == NULL)
|
|
{
|
|
PKCS7err(PKCS7_F_PKCS7_DATASIGN,ERR_R_BIO_LIB);
|
|
goto err;
|
|
}
|
|
for (i=0; i<sk_PKCS7_SIGNER_INFO_num(si_sk); i++)
|
|
{
|
|
si=sk_PKCS7_SIGNER_INFO_value(si_sk,i);
|
|
if (si->pkey == NULL) continue;
|
|
|
|
j=OBJ_obj2nid(si->digest_alg->algorithm);
|
|
|
|
btmp=bio;
|
|
for (;;)
|
|
{
|
|
if ((btmp=BIO_find_type(btmp,BIO_TYPE_MD))
|
|
== NULL)
|
|
{
|
|
PKCS7err(PKCS7_F_PKCS7_DATASIGN,PKCS7_R_UNABLE_TO_FIND_MESSAGE_DIGEST);
|
|
goto err;
|
|
}
|
|
BIO_get_md_ctx(btmp,&mdc);
|
|
if (mdc == NULL)
|
|
{
|
|
PKCS7err(PKCS7_F_PKCS7_DATASIGN,PKCS7_R_INTERNAL_ERROR);
|
|
goto err;
|
|
}
|
|
if (EVP_MD_CTX_type(mdc) == j)
|
|
break;
|
|
else
|
|
btmp=btmp->next_bio;
|
|
}
|
|
|
|
/* We now have the EVP_MD_CTX, lets do the
|
|
* signing. */
|
|
memcpy(&ctx_tmp,mdc,sizeof(ctx_tmp));
|
|
if (!BUF_MEM_grow(buf,EVP_PKEY_size(si->pkey)))
|
|
{
|
|
PKCS7err(PKCS7_F_PKCS7_DATASIGN,ERR_R_BIO_LIB);
|
|
goto err;
|
|
}
|
|
|
|
sk=si->auth_attr;
|
|
|
|
/* If there are attributes, we add the digest
|
|
* attribute and only sign the attributes */
|
|
if ((sk != NULL) && (sk_X509_ATTRIBUTE_num(sk) != 0))
|
|
{
|
|
unsigned char md_data[EVP_MAX_MD_SIZE];
|
|
unsigned int md_len;
|
|
ASN1_OCTET_STRING *digest;
|
|
ASN1_UTCTIME *sign_time;
|
|
const EVP_MD *md_tmp;
|
|
|
|
/* Add signing time */
|
|
sign_time=X509_gmtime_adj(NULL,0);
|
|
PKCS7_add_signed_attribute(si,
|
|
NID_pkcs9_signingTime,
|
|
V_ASN1_UTCTIME,sign_time);
|
|
|
|
/* Add digest */
|
|
md_tmp=EVP_MD_CTX_md(&ctx_tmp);
|
|
EVP_DigestFinal(&ctx_tmp,md_data,&md_len);
|
|
digest=M_ASN1_OCTET_STRING_new();
|
|
M_ASN1_OCTET_STRING_set(digest,md_data,md_len);
|
|
PKCS7_add_signed_attribute(si,
|
|
NID_pkcs9_messageDigest,
|
|
V_ASN1_OCTET_STRING,digest);
|
|
|
|
/* Now sign the mess */
|
|
EVP_SignInit(&ctx_tmp,md_tmp);
|
|
x=i2d_ASN1_SET_OF_X509_ATTRIBUTE(sk,NULL,
|
|
i2d_X509_ATTRIBUTE,
|
|
V_ASN1_SET,V_ASN1_UNIVERSAL,IS_SET);
|
|
pp=(unsigned char *)OPENSSL_malloc(x);
|
|
p=pp;
|
|
i2d_ASN1_SET_OF_X509_ATTRIBUTE(sk,&p,
|
|
i2d_X509_ATTRIBUTE,
|
|
V_ASN1_SET,V_ASN1_UNIVERSAL,IS_SET);
|
|
EVP_SignUpdate(&ctx_tmp,pp,x);
|
|
OPENSSL_free(pp);
|
|
pp=NULL;
|
|
}
|
|
|
|
if (si->pkey->type == EVP_PKEY_DSA)
|
|
ctx_tmp.digest=EVP_dss1();
|
|
|
|
if (!EVP_SignFinal(&ctx_tmp,(unsigned char *)buf->data,
|
|
(unsigned int *)&buf->length,si->pkey))
|
|
{
|
|
PKCS7err(PKCS7_F_PKCS7_DATASIGN,ERR_R_EVP_LIB);
|
|
goto err;
|
|
}
|
|
if (!ASN1_STRING_set(si->enc_digest,
|
|
(unsigned char *)buf->data,buf->length))
|
|
{
|
|
PKCS7err(PKCS7_F_PKCS7_DATASIGN,ERR_R_ASN1_LIB);
|
|
goto err;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!p7->detached)
|
|
{
|
|
btmp=BIO_find_type(bio,BIO_TYPE_MEM);
|
|
if (btmp == NULL)
|
|
{
|
|
PKCS7err(PKCS7_F_PKCS7_DATASIGN,PKCS7_R_UNABLE_TO_FIND_MEM_BIO);
|
|
goto err;
|
|
}
|
|
BIO_get_mem_ptr(btmp,&buf_mem);
|
|
/* Mark the BIO read only then we can use its copy of the data
|
|
* instead of making an extra copy.
|
|
*/
|
|
BIO_set_flags(btmp, BIO_FLAGS_MEM_RDONLY);
|
|
BIO_set_mem_eof_return(btmp, 0);
|
|
os->data = (unsigned char *)buf_mem->data;
|
|
os->length = buf_mem->length;
|
|
#if 0
|
|
M_ASN1_OCTET_STRING_set(os,
|
|
(unsigned char *)buf_mem->data,buf_mem->length);
|
|
#endif
|
|
}
|
|
if (pp != NULL) OPENSSL_free(pp);
|
|
pp=NULL;
|
|
|
|
ret=1;
|
|
err:
|
|
if (buf != NULL) BUF_MEM_free(buf);
|
|
return(ret);
|
|
}
|
|
|
|
int PKCS7_dataVerify(X509_STORE *cert_store, X509_STORE_CTX *ctx, BIO *bio,
|
|
PKCS7 *p7, PKCS7_SIGNER_INFO *si)
|
|
{
|
|
PKCS7_ISSUER_AND_SERIAL *ias;
|
|
int ret=0,i;
|
|
STACK_OF(X509) *cert;
|
|
X509 *x509;
|
|
|
|
if (PKCS7_type_is_signed(p7))
|
|
{
|
|
cert=p7->d.sign->cert;
|
|
}
|
|
else if (PKCS7_type_is_signedAndEnveloped(p7))
|
|
{
|
|
cert=p7->d.signed_and_enveloped->cert;
|
|
}
|
|
else
|
|
{
|
|
PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,PKCS7_R_WRONG_PKCS7_TYPE);
|
|
goto err;
|
|
}
|
|
/* XXXXXXXXXXXXXXXXXXXXXXX */
|
|
ias=si->issuer_and_serial;
|
|
|
|
x509=X509_find_by_issuer_and_serial(cert,ias->issuer,ias->serial);
|
|
|
|
/* were we able to find the cert in passed to us */
|
|
if (x509 == NULL)
|
|
{
|
|
PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,PKCS7_R_UNABLE_TO_FIND_CERTIFICATE);
|
|
goto err;
|
|
}
|
|
|
|
/* Lets verify */
|
|
X509_STORE_CTX_init(ctx,cert_store,x509,cert);
|
|
X509_STORE_CTX_set_purpose(ctx, X509_PURPOSE_SMIME_SIGN);
|
|
i=X509_verify_cert(ctx);
|
|
if (i <= 0)
|
|
{
|
|
PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,ERR_R_X509_LIB);
|
|
X509_STORE_CTX_cleanup(ctx);
|
|
goto err;
|
|
}
|
|
X509_STORE_CTX_cleanup(ctx);
|
|
|
|
return PKCS7_signatureVerify(bio, p7, si, x509);
|
|
err:
|
|
return ret;
|
|
}
|
|
|
|
int PKCS7_signatureVerify(BIO *bio, PKCS7 *p7, PKCS7_SIGNER_INFO *si,
|
|
X509 *x509)
|
|
{
|
|
ASN1_OCTET_STRING *os;
|
|
EVP_MD_CTX mdc_tmp,*mdc;
|
|
unsigned char *pp,*p;
|
|
int ret=0,i;
|
|
int md_type;
|
|
STACK_OF(X509_ATTRIBUTE) *sk;
|
|
BIO *btmp;
|
|
EVP_PKEY *pkey;
|
|
|
|
if (!PKCS7_type_is_signed(p7) &&
|
|
!PKCS7_type_is_signedAndEnveloped(p7)) {
|
|
PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY,
|
|
PKCS7_R_WRONG_PKCS7_TYPE);
|
|
goto err;
|
|
}
|
|
|
|
md_type=OBJ_obj2nid(si->digest_alg->algorithm);
|
|
|
|
btmp=bio;
|
|
for (;;)
|
|
{
|
|
if ((btmp == NULL) ||
|
|
((btmp=BIO_find_type(btmp,BIO_TYPE_MD)) == NULL))
|
|
{
|
|
PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY,
|
|
PKCS7_R_UNABLE_TO_FIND_MESSAGE_DIGEST);
|
|
goto err;
|
|
}
|
|
BIO_get_md_ctx(btmp,&mdc);
|
|
if (mdc == NULL)
|
|
{
|
|
PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY,
|
|
PKCS7_R_INTERNAL_ERROR);
|
|
goto err;
|
|
}
|
|
if (EVP_MD_CTX_type(mdc) == md_type)
|
|
break;
|
|
btmp=btmp->next_bio;
|
|
}
|
|
|
|
/* mdc is the digest ctx that we want, unless there are attributes,
|
|
* in which case the digest is the signed attributes */
|
|
memcpy(&mdc_tmp,mdc,sizeof(mdc_tmp));
|
|
|
|
sk=si->auth_attr;
|
|
if ((sk != NULL) && (sk_X509_ATTRIBUTE_num(sk) != 0))
|
|
{
|
|
unsigned char md_dat[EVP_MAX_MD_SIZE];
|
|
unsigned int md_len;
|
|
ASN1_OCTET_STRING *message_digest;
|
|
|
|
EVP_DigestFinal(&mdc_tmp,md_dat,&md_len);
|
|
message_digest=PKCS7_digest_from_attributes(sk);
|
|
if (!message_digest)
|
|
{
|
|
PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY,
|
|
PKCS7_R_UNABLE_TO_FIND_MESSAGE_DIGEST);
|
|
goto err;
|
|
}
|
|
if ((message_digest->length != (int)md_len) ||
|
|
(memcmp(message_digest->data,md_dat,md_len)))
|
|
{
|
|
#if 0
|
|
{
|
|
int ii;
|
|
for (ii=0; ii<message_digest->length; ii++)
|
|
printf("%02X",message_digest->data[ii]); printf(" sent\n");
|
|
for (ii=0; ii<md_len; ii++) printf("%02X",md_dat[ii]); printf(" calc\n");
|
|
}
|
|
#endif
|
|
PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY,
|
|
PKCS7_R_DIGEST_FAILURE);
|
|
ret= -1;
|
|
goto err;
|
|
}
|
|
|
|
EVP_VerifyInit(&mdc_tmp,EVP_get_digestbynid(md_type));
|
|
/* Note: when forming the encoding of the attributes we
|
|
* shouldn't reorder them or this will break the signature.
|
|
* This is done by using the IS_SEQUENCE flag.
|
|
*/
|
|
i=i2d_ASN1_SET_OF_X509_ATTRIBUTE(sk,NULL,i2d_X509_ATTRIBUTE,
|
|
V_ASN1_SET,V_ASN1_UNIVERSAL, IS_SEQUENCE);
|
|
pp=OPENSSL_malloc(i);
|
|
p=pp;
|
|
i2d_ASN1_SET_OF_X509_ATTRIBUTE(sk,&p,i2d_X509_ATTRIBUTE,
|
|
V_ASN1_SET,V_ASN1_UNIVERSAL, IS_SEQUENCE);
|
|
EVP_VerifyUpdate(&mdc_tmp,pp,i);
|
|
|
|
OPENSSL_free(pp);
|
|
}
|
|
|
|
os=si->enc_digest;
|
|
pkey = X509_get_pubkey(x509);
|
|
if(pkey->type == EVP_PKEY_DSA) mdc_tmp.digest=EVP_dss1();
|
|
|
|
i=EVP_VerifyFinal(&mdc_tmp,os->data,os->length, pkey);
|
|
EVP_PKEY_free(pkey);
|
|
if (i <= 0)
|
|
{
|
|
PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY,
|
|
PKCS7_R_SIGNATURE_FAILURE);
|
|
ret= -1;
|
|
goto err;
|
|
}
|
|
else
|
|
ret=1;
|
|
err:
|
|
return(ret);
|
|
}
|
|
|
|
PKCS7_ISSUER_AND_SERIAL *PKCS7_get_issuer_and_serial(PKCS7 *p7, int idx)
|
|
{
|
|
STACK_OF(PKCS7_RECIP_INFO) *rsk;
|
|
PKCS7_RECIP_INFO *ri;
|
|
int i;
|
|
|
|
i=OBJ_obj2nid(p7->type);
|
|
if (i != NID_pkcs7_signedAndEnveloped) return(NULL);
|
|
rsk=p7->d.signed_and_enveloped->recipientinfo;
|
|
ri=sk_PKCS7_RECIP_INFO_value(rsk,0);
|
|
if (sk_PKCS7_RECIP_INFO_num(rsk) <= idx) return(NULL);
|
|
ri=sk_PKCS7_RECIP_INFO_value(rsk,idx);
|
|
return(ri->issuer_and_serial);
|
|
}
|
|
|
|
ASN1_TYPE *PKCS7_get_signed_attribute(PKCS7_SIGNER_INFO *si, int nid)
|
|
{
|
|
return(get_attribute(si->auth_attr,nid));
|
|
}
|
|
|
|
ASN1_TYPE *PKCS7_get_attribute(PKCS7_SIGNER_INFO *si, int nid)
|
|
{
|
|
return(get_attribute(si->unauth_attr,nid));
|
|
}
|
|
|
|
static ASN1_TYPE *get_attribute(STACK_OF(X509_ATTRIBUTE) *sk, int nid)
|
|
{
|
|
int i;
|
|
X509_ATTRIBUTE *xa;
|
|
ASN1_OBJECT *o;
|
|
|
|
o=OBJ_nid2obj(nid);
|
|
if (!o || !sk) return(NULL);
|
|
for (i=0; i<sk_X509_ATTRIBUTE_num(sk); i++)
|
|
{
|
|
xa=sk_X509_ATTRIBUTE_value(sk,i);
|
|
if (OBJ_cmp(xa->object,o) == 0)
|
|
{
|
|
if (xa->set && sk_ASN1_TYPE_num(xa->value.set))
|
|
return(sk_ASN1_TYPE_value(xa->value.set,0));
|
|
else
|
|
return(NULL);
|
|
}
|
|
}
|
|
return(NULL);
|
|
}
|
|
|
|
ASN1_OCTET_STRING *PKCS7_digest_from_attributes(STACK_OF(X509_ATTRIBUTE) *sk)
|
|
{
|
|
ASN1_TYPE *astype;
|
|
if(!(astype = get_attribute(sk, NID_pkcs9_messageDigest))) return NULL;
|
|
return astype->value.octet_string;
|
|
}
|
|
|
|
int PKCS7_set_signed_attributes(PKCS7_SIGNER_INFO *p7si,
|
|
STACK_OF(X509_ATTRIBUTE) *sk)
|
|
{
|
|
int i;
|
|
|
|
if (p7si->auth_attr != NULL)
|
|
sk_X509_ATTRIBUTE_pop_free(p7si->auth_attr,X509_ATTRIBUTE_free);
|
|
p7si->auth_attr=sk_X509_ATTRIBUTE_dup(sk);
|
|
for (i=0; i<sk_X509_ATTRIBUTE_num(sk); i++)
|
|
{
|
|
if ((sk_X509_ATTRIBUTE_set(p7si->auth_attr,i,
|
|
X509_ATTRIBUTE_dup(sk_X509_ATTRIBUTE_value(sk,i))))
|
|
== NULL)
|
|
return(0);
|
|
}
|
|
return(1);
|
|
}
|
|
|
|
int PKCS7_set_attributes(PKCS7_SIGNER_INFO *p7si, STACK_OF(X509_ATTRIBUTE) *sk)
|
|
{
|
|
int i;
|
|
|
|
if (p7si->unauth_attr != NULL)
|
|
sk_X509_ATTRIBUTE_pop_free(p7si->unauth_attr,
|
|
X509_ATTRIBUTE_free);
|
|
p7si->unauth_attr=sk_X509_ATTRIBUTE_dup(sk);
|
|
for (i=0; i<sk_X509_ATTRIBUTE_num(sk); i++)
|
|
{
|
|
if ((sk_X509_ATTRIBUTE_set(p7si->unauth_attr,i,
|
|
X509_ATTRIBUTE_dup(sk_X509_ATTRIBUTE_value(sk,i))))
|
|
== NULL)
|
|
return(0);
|
|
}
|
|
return(1);
|
|
}
|
|
|
|
int PKCS7_add_signed_attribute(PKCS7_SIGNER_INFO *p7si, int nid, int atrtype,
|
|
void *value)
|
|
{
|
|
return(add_attribute(&(p7si->auth_attr),nid,atrtype,value));
|
|
}
|
|
|
|
int PKCS7_add_attribute(PKCS7_SIGNER_INFO *p7si, int nid, int atrtype,
|
|
void *value)
|
|
{
|
|
return(add_attribute(&(p7si->unauth_attr),nid,atrtype,value));
|
|
}
|
|
|
|
static int add_attribute(STACK_OF(X509_ATTRIBUTE) **sk, int nid, int atrtype,
|
|
void *value)
|
|
{
|
|
X509_ATTRIBUTE *attr=NULL;
|
|
|
|
if (*sk == NULL)
|
|
{
|
|
*sk = sk_X509_ATTRIBUTE_new(NULL);
|
|
new_attrib:
|
|
attr=X509_ATTRIBUTE_create(nid,atrtype,value);
|
|
sk_X509_ATTRIBUTE_push(*sk,attr);
|
|
}
|
|
else
|
|
{
|
|
int i;
|
|
|
|
for (i=0; i<sk_X509_ATTRIBUTE_num(*sk); i++)
|
|
{
|
|
attr=sk_X509_ATTRIBUTE_value(*sk,i);
|
|
if (OBJ_obj2nid(attr->object) == nid)
|
|
{
|
|
X509_ATTRIBUTE_free(attr);
|
|
attr=X509_ATTRIBUTE_create(nid,atrtype,value);
|
|
sk_X509_ATTRIBUTE_set(*sk,i,attr);
|
|
goto end;
|
|
}
|
|
}
|
|
goto new_attrib;
|
|
}
|
|
end:
|
|
return(1);
|
|
}
|
|
|