+++ /dev/null
-/* crypto/pkcs7/pk7_doit.c */
-/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
- * All rights reserved.
- *
- * This package is an SSL implementation written
- * by Eric Young (eay@cryptsoft.com).
- * The implementation was written so as to conform with Netscapes SSL.
- *
- * This library is free for commercial and non-commercial use as long as
- * the following conditions are aheared to. The following conditions
- * apply to all code found in this distribution, be it the RC4, RSA,
- * lhash, DES, etc., code; not just the SSL code. The SSL documentation
- * included with this distribution is covered by the same copyright terms
- * except that the holder is Tim Hudson (tjh@cryptsoft.com).
- *
- * Copyright remains Eric Young's, and as such any Copyright notices in
- * the code are not to be removed.
- * If this package is used in a product, Eric Young should be given attribution
- * as the author of the parts of the library used.
- * This can be in the form of a textual message at program startup or
- * in documentation (online or textual) provided with the package.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * "This product includes cryptographic software written by
- * Eric Young (eay@cryptsoft.com)"
- * The word 'cryptographic' can be left out if the rouines from the library
- * being used are not cryptographic related :-).
- * 4. If you include any Windows specific code (or a derivative thereof) from
- * the apps directory (application code) you must include an acknowledgement:
- * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
- *
- * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * The licence and distribution terms for any publically available version or
- * derivative of this code cannot be changed. i.e. this code cannot simply be
- * copied and put under another distribution licence
- * [including the GNU Public Licence.]
- */
-
-#include <stdio.h>
-#include "cryptlib.h"
-#include <openssl/rand.h>
-#include <openssl/objects.h>
-#include <openssl/x509.h>
-#include <openssl/x509v3.h>
-
-static int add_attribute(STACK_OF(X509_ATTRIBUTE) **sk, int nid, int atrtype,
- void *value);
-static ASN1_TYPE *get_attribute(STACK_OF(X509_ATTRIBUTE) *sk, int nid);
-
-static int PKCS7_type_is_other(PKCS7* p7)
- {
- int isOther=1;
-
- int nid=OBJ_obj2nid(p7->type);
-
- switch( nid )
- {
- case NID_pkcs7_data:
- case NID_pkcs7_signed:
- case NID_pkcs7_enveloped:
- case NID_pkcs7_signedAndEnveloped:
- case NID_pkcs7_digest:
- case NID_pkcs7_encrypted:
- isOther=0;
- break;
- default:
- isOther=1;
- }
-
- return isOther;
-
- }
-
-static int PKCS7_type_is_octet_string(PKCS7* p7)
- {
- if ( 0==PKCS7_type_is_other(p7) )
- return 0;
-
- return (V_ASN1_OCTET_STRING==p7->d.other->type) ? 1 : 0;
- }
-
-BIO *PKCS7_dataInit(PKCS7 *p7, BIO *bio)
- {
- int i,j;
- BIO *out=NULL,*btmp=NULL;
- X509_ALGOR *xa;
- const EVP_MD *evp_md;
- const EVP_CIPHER *evp_cipher=NULL;
- STACK_OF(X509_ALGOR) *md_sk=NULL;
- STACK_OF(PKCS7_RECIP_INFO) *rsk=NULL;
- X509_ALGOR *xalg=NULL;
- PKCS7_RECIP_INFO *ri=NULL;
- EVP_PKEY *pkey;
-
- i=OBJ_obj2nid(p7->type);
- p7->state=PKCS7_S_HEADER;
-
- switch (i)
- {
- case NID_pkcs7_signed:
- md_sk=p7->d.sign->md_algs;
- break;
- case NID_pkcs7_signedAndEnveloped:
- rsk=p7->d.signed_and_enveloped->recipientinfo;
- md_sk=p7->d.signed_and_enveloped->md_algs;
- xalg=p7->d.signed_and_enveloped->enc_data->algorithm;
- evp_cipher=p7->d.signed_and_enveloped->enc_data->cipher;
- if (evp_cipher == NULL)
- {
- PKCS7err(PKCS7_F_PKCS7_DATAINIT,
- PKCS7_R_CIPHER_NOT_INITIALIZED);
- goto err;
- }
- break;
- case NID_pkcs7_enveloped:
- rsk=p7->d.enveloped->recipientinfo;
- xalg=p7->d.enveloped->enc_data->algorithm;
- evp_cipher=p7->d.enveloped->enc_data->cipher;
- if (evp_cipher == NULL)
- {
- PKCS7err(PKCS7_F_PKCS7_DATAINIT,
- PKCS7_R_CIPHER_NOT_INITIALIZED);
- goto err;
- }
- break;
- default:
- PKCS7err(PKCS7_F_PKCS7_DATAINIT,PKCS7_R_UNSUPPORTED_CONTENT_TYPE);
- goto err;
- }
-
- if (md_sk != NULL)
- {
- for (i=0; i<sk_X509_ALGOR_num(md_sk); i++)
- {
- xa=sk_X509_ALGOR_value(md_sk,i);
- if ((btmp=BIO_new(BIO_f_md())) == NULL)
- {
- PKCS7err(PKCS7_F_PKCS7_DATAINIT,ERR_R_BIO_LIB);
- goto err;
- }
-
- j=OBJ_obj2nid(xa->algorithm);
- evp_md=EVP_get_digestbyname(OBJ_nid2sn(j));
- if (evp_md == NULL)
- {
- PKCS7err(PKCS7_F_PKCS7_DATAINIT,PKCS7_R_UNKNOWN_DIGEST_TYPE);
- goto err;
- }
-
- BIO_set_md(btmp,evp_md);
- if (out == NULL)
- out=btmp;
- else
- BIO_push(out,btmp);
- btmp=NULL;
- }
- }
-
- if (evp_cipher != NULL)
- {
- unsigned char key[EVP_MAX_KEY_LENGTH];
- unsigned char iv[EVP_MAX_IV_LENGTH];
- int keylen,ivlen;
- int jj,max;
- unsigned char *tmp;
- EVP_CIPHER_CTX *ctx;
-
- if ((btmp=BIO_new(BIO_f_cipher())) == NULL)
- {
- PKCS7err(PKCS7_F_PKCS7_DATAINIT,ERR_R_BIO_LIB);
- goto err;
- }
- BIO_get_cipher_ctx(btmp, &ctx);
- keylen=EVP_CIPHER_key_length(evp_cipher);
- ivlen=EVP_CIPHER_iv_length(evp_cipher);
- if (RAND_bytes(key,keylen) <= 0)
- goto err;
- xalg->algorithm = OBJ_nid2obj(EVP_CIPHER_type(evp_cipher));
- if (ivlen > 0) RAND_pseudo_bytes(iv,ivlen);
- EVP_CipherInit_ex(ctx, evp_cipher, NULL, key, iv, 1);
-
- if (ivlen > 0) {
- if (xalg->parameter == NULL)
- xalg->parameter=ASN1_TYPE_new();
- if(EVP_CIPHER_param_to_asn1(ctx, xalg->parameter) < 0)
- goto err;
- }
-
- /* Lets do the pub key stuff :-) */
- max=0;
- for (i=0; i<sk_PKCS7_RECIP_INFO_num(rsk); i++)
- {
- ri=sk_PKCS7_RECIP_INFO_value(rsk,i);
- if (ri->cert == NULL)
- {
- PKCS7err(PKCS7_F_PKCS7_DATAINIT,PKCS7_R_MISSING_CERIPEND_INFO);
- goto err;
- }
- pkey=X509_get_pubkey(ri->cert);
- jj=EVP_PKEY_size(pkey);
- EVP_PKEY_free(pkey);
- if (max < jj) max=jj;
- }
- if ((tmp=(unsigned char *)OPENSSL_malloc(max)) == NULL)
- {
- PKCS7err(PKCS7_F_PKCS7_DATAINIT,ERR_R_MALLOC_FAILURE);
- goto err;
- }
- for (i=0; i<sk_PKCS7_RECIP_INFO_num(rsk); i++)
- {
- ri=sk_PKCS7_RECIP_INFO_value(rsk,i);
- pkey=X509_get_pubkey(ri->cert);
- jj=EVP_PKEY_encrypt(tmp,key,keylen,pkey);
- EVP_PKEY_free(pkey);
- if (jj <= 0)
- {
- PKCS7err(PKCS7_F_PKCS7_DATAINIT,ERR_R_EVP_LIB);
- OPENSSL_free(tmp);
- goto err;
- }
- M_ASN1_OCTET_STRING_set(ri->enc_key,tmp,jj);
- }
- OPENSSL_free(tmp);
- OPENSSL_cleanse(key, keylen);
-
- if (out == NULL)
- out=btmp;
- else
- BIO_push(out,btmp);
- btmp=NULL;
- }
-
- if (bio == NULL) {
- if (PKCS7_is_detached(p7))
- bio=BIO_new(BIO_s_null());
- else {
- if (PKCS7_type_is_signed(p7) ) {
- if ( PKCS7_type_is_data(p7->d.sign->contents)) {
- ASN1_OCTET_STRING *os;
- os=p7->d.sign->contents->d.data;
- if (os->length > 0)
- bio = BIO_new_mem_buf(os->data, os->length);
- }
- else if ( PKCS7_type_is_octet_string(p7->d.sign->contents) ) {
- ASN1_OCTET_STRING *os;
- os=p7->d.sign->contents->d.other->value.octet_string;
- if (os->length > 0)
- bio = BIO_new_mem_buf(os->data, os->length);
- }
- }
- if(bio == NULL) {
- bio=BIO_new(BIO_s_mem());
- BIO_set_mem_eof_return(bio,0);
- }
- }
- }
- BIO_push(out,bio);
- bio=NULL;
- if (0)
- {
-err:
- if (out != NULL)
- BIO_free_all(out);
- if (btmp != NULL)
- BIO_free_all(btmp);
- out=NULL;
- }
- return(out);
- }
-
-/* int */
-BIO *PKCS7_dataDecode(PKCS7 *p7, EVP_PKEY *pkey, BIO *in_bio, X509 *pcert)
- {
- int i,j;
- BIO *out=NULL,*btmp=NULL,*etmp=NULL,*bio=NULL;
- unsigned char *tmp=NULL;
- X509_ALGOR *xa;
- ASN1_OCTET_STRING *data_body=NULL;
- const EVP_MD *evp_md;
- const EVP_CIPHER *evp_cipher=NULL;
- EVP_CIPHER_CTX *evp_ctx=NULL;
- X509_ALGOR *enc_alg=NULL;
- STACK_OF(X509_ALGOR) *md_sk=NULL;
- STACK_OF(PKCS7_RECIP_INFO) *rsk=NULL;
- X509_ALGOR *xalg=NULL;
- PKCS7_RECIP_INFO *ri=NULL;
-
- i=OBJ_obj2nid(p7->type);
- p7->state=PKCS7_S_HEADER;
-
- switch (i)
- {
- case NID_pkcs7_signed:
- data_body=p7->d.sign->contents->d.data;
- md_sk=p7->d.sign->md_algs;
- break;
- case NID_pkcs7_signedAndEnveloped:
- rsk=p7->d.signed_and_enveloped->recipientinfo;
- md_sk=p7->d.signed_and_enveloped->md_algs;
- data_body=p7->d.signed_and_enveloped->enc_data->enc_data;
- enc_alg=p7->d.signed_and_enveloped->enc_data->algorithm;
- evp_cipher=EVP_get_cipherbyname(OBJ_nid2sn(OBJ_obj2nid(enc_alg->algorithm)));
- if (evp_cipher == NULL)
- {
- PKCS7err(PKCS7_F_PKCS7_DATADECODE,PKCS7_R_UNSUPPORTED_CIPHER_TYPE);
- goto err;
- }
- xalg=p7->d.signed_and_enveloped->enc_data->algorithm;
- break;
- case NID_pkcs7_enveloped:
- rsk=p7->d.enveloped->recipientinfo;
- enc_alg=p7->d.enveloped->enc_data->algorithm;
- data_body=p7->d.enveloped->enc_data->enc_data;
- evp_cipher=EVP_get_cipherbyname(OBJ_nid2sn(OBJ_obj2nid(enc_alg->algorithm)));
- if (evp_cipher == NULL)
- {
- PKCS7err(PKCS7_F_PKCS7_DATADECODE,PKCS7_R_UNSUPPORTED_CIPHER_TYPE);
- goto err;
- }
- xalg=p7->d.enveloped->enc_data->algorithm;
- break;
- default:
- PKCS7err(PKCS7_F_PKCS7_DATADECODE,PKCS7_R_UNSUPPORTED_CONTENT_TYPE);
- goto err;
- }
-
- /* We will be checking the signature */
- if (md_sk != NULL)
- {
- for (i=0; i<sk_X509_ALGOR_num(md_sk); i++)
- {
- xa=sk_X509_ALGOR_value(md_sk,i);
- if ((btmp=BIO_new(BIO_f_md())) == NULL)
- {
- PKCS7err(PKCS7_F_PKCS7_DATADECODE,ERR_R_BIO_LIB);
- goto err;
- }
-
- j=OBJ_obj2nid(xa->algorithm);
- evp_md=EVP_get_digestbyname(OBJ_nid2sn(j));
- if (evp_md == NULL)
- {
- PKCS7err(PKCS7_F_PKCS7_DATADECODE,PKCS7_R_UNKNOWN_DIGEST_TYPE);
- goto err;
- }
-
- BIO_set_md(btmp,evp_md);
- if (out == NULL)
- out=btmp;
- else
- BIO_push(out,btmp);
- btmp=NULL;
- }
- }
-
- if (evp_cipher != NULL)
- {
-#if 0
- unsigned char key[EVP_MAX_KEY_LENGTH];
- unsigned char iv[EVP_MAX_IV_LENGTH];
- unsigned char *p;
- int keylen,ivlen;
- int max;
- X509_OBJECT ret;
-#endif
- int jj;
-
- if ((etmp=BIO_new(BIO_f_cipher())) == NULL)
- {
- PKCS7err(PKCS7_F_PKCS7_DATADECODE,ERR_R_BIO_LIB);
- goto err;
- }
-
- /* It was encrypted, we need to decrypt the secret key
- * with the private key */
-
- /* Find the recipientInfo which matches the passed certificate
- * (if any)
- */
-
- for (i=0; i<sk_PKCS7_RECIP_INFO_num(rsk); i++) {
- ri=sk_PKCS7_RECIP_INFO_value(rsk,i);
- if(!X509_NAME_cmp(ri->issuer_and_serial->issuer,
- pcert->cert_info->issuer) &&
- !M_ASN1_INTEGER_cmp(pcert->cert_info->serialNumber,
- ri->issuer_and_serial->serial)) break;
- ri=NULL;
- }
- if (ri == NULL) {
- PKCS7err(PKCS7_F_PKCS7_DATADECODE,
- PKCS7_R_NO_RECIPIENT_MATCHES_CERTIFICATE);
- goto err;
- }
-
- jj=EVP_PKEY_size(pkey);
- tmp=(unsigned char *)OPENSSL_malloc(jj+10);
- if (tmp == NULL)
- {
- PKCS7err(PKCS7_F_PKCS7_DATADECODE,ERR_R_MALLOC_FAILURE);
- goto err;
- }
-
- jj=EVP_PKEY_decrypt(tmp, M_ASN1_STRING_data(ri->enc_key),
- 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_ex(evp_ctx,evp_cipher,NULL,NULL,NULL,0);
- if (EVP_CIPHER_asn1_to_param(evp_ctx,enc_alg->parameter) < 0)
- goto err;
-
- 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);
- goto err;
- }
- }
- EVP_CipherInit_ex(evp_ctx,NULL,NULL,tmp,NULL,0);
-
- OPENSSL_cleanse(tmp,jj);
-
- if (out == NULL)
- out=etmp;
- else
- BIO_push(out,etmp);
- etmp=NULL;
- }
-
-#if 1
- if (PKCS7_is_detached(p7) || (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
- * the data, the encrypt BIO, if present, will read
- * EOF and encode the last few bytes */
- BIO_set_mem_eof_return(bio,0);
-
- 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);
- else {
- bio=BIO_new(BIO_s_mem());
- BIO_set_mem_eof_return(bio,0);
- }
-#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;
- }
- 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;
- ASN1_OCTET_STRING *os=NULL;
-
- EVP_MD_CTX_init(&ctx_tmp);
- 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,ERR_R_INTERNAL_ERROR);
- goto err;
- }
- if (EVP_MD_CTX_type(mdc) == j)
- break;
- else
- btmp=BIO_next(btmp);
- }
-
- /* We now have the EVP_MD_CTX, lets do the
- * signing. */
- EVP_MD_CTX_copy_ex(&ctx_tmp,mdc);
- if (!BUF_MEM_grow_clean(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], *abuf=NULL;
- unsigned int md_len, alen;
- ASN1_OCTET_STRING *digest;
- ASN1_UTCTIME *sign_time;
- const EVP_MD *md_tmp;
-
- /* Add signing time if not already present */
- if (!PKCS7_get_signed_attribute(si,
- NID_pkcs9_signingTime))
- {
- 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_ex(&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 attributes */
- EVP_SignInit_ex(&ctx_tmp,md_tmp,NULL);
- alen = ASN1_item_i2d((ASN1_VALUE *)sk,&abuf,
- ASN1_ITEM_rptr(PKCS7_ATTR_SIGN));
- if(!abuf) goto err;
- EVP_SignUpdate(&ctx_tmp,abuf,alen);
- OPENSSL_free(abuf);
- }
-
-#ifndef OPENSSL_NO_DSA
- if (si->pkey->type == EVP_PKEY_DSA)
- ctx_tmp.digest=EVP_dss1();
-#endif
-
- 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 (!PKCS7_is_detached(p7))
- {
- 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
- }
- ret=1;
-err:
- EVP_MD_CTX_cleanup(&ctx_tmp);
- 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 */
- if(!X509_STORE_CTX_init(ctx,cert_store,x509,cert))
- {
- PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,ERR_R_X509_LIB);
- goto err;
- }
- 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;
- int ret=0,i;
- int md_type;
- STACK_OF(X509_ATTRIBUTE) *sk;
- BIO *btmp;
- EVP_PKEY *pkey;
-
- EVP_MD_CTX_init(&mdc_tmp);
-
- 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,
- ERR_R_INTERNAL_ERROR);
- goto err;
- }
- if (EVP_MD_CTX_type(mdc) == md_type)
- break;
- /* Workaround for some broken clients that put the signature
- * OID instead of the digest OID in digest_alg->algorithm
- */
- if (EVP_MD_pkey_type(EVP_MD_CTX_md(mdc)) == md_type)
- break;
- btmp=BIO_next(btmp);
- }
-
- /* mdc is the digest ctx that we want, unless there are attributes,
- * in which case the digest is the signed attributes */
- EVP_MD_CTX_copy_ex(&mdc_tmp,mdc);
-
- sk=si->auth_attr;
- if ((sk != NULL) && (sk_X509_ATTRIBUTE_num(sk) != 0))
- {
- unsigned char md_dat[EVP_MAX_MD_SIZE], *abuf = NULL;
- unsigned int md_len, alen;
- ASN1_OCTET_STRING *message_digest;
-
- EVP_DigestFinal_ex(&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_ex(&mdc_tmp,EVP_get_digestbynid(md_type), NULL);
-
- alen = ASN1_item_i2d((ASN1_VALUE *)sk, &abuf,
- ASN1_ITEM_rptr(PKCS7_ATTR_VERIFY));
- EVP_VerifyUpdate(&mdc_tmp, abuf, alen);
-
- OPENSSL_free(abuf);
- }
-
- os=si->enc_digest;
- pkey = X509_get_pubkey(x509);
- if (!pkey)
- {
- ret = -1;
- goto err;
- }
-#ifndef OPENSSL_NO_DSA
- if(pkey->type == EVP_PKEY_DSA) mdc_tmp.digest=EVP_dss1();
-#endif
-
- 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:
- EVP_MD_CTX_cleanup(&mdc_tmp);
- 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->single && 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);
- }
-
projects / bcm963xx.git / blobdiff