sl@0: /* pk7_smime.c */
sl@0: /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
sl@0:  * project.
sl@0:  */
sl@0: /* ====================================================================
sl@0:  * Copyright (c) 1999-2004 The OpenSSL Project.  All rights reserved.
sl@0:  *
sl@0:  * Redistribution and use in source and binary forms, with or without
sl@0:  * modification, are permitted provided that the following conditions
sl@0:  * are met:
sl@0:  *
sl@0:  * 1. Redistributions of source code must retain the above copyright
sl@0:  *    notice, this list of conditions and the following disclaimer. 
sl@0:  *
sl@0:  * 2. Redistributions in binary form must reproduce the above copyright
sl@0:  *    notice, this list of conditions and the following disclaimer in
sl@0:  *    the documentation and/or other materials provided with the
sl@0:  *    distribution.
sl@0:  *
sl@0:  * 3. All advertising materials mentioning features or use of this
sl@0:  *    software must display the following acknowledgment:
sl@0:  *    "This product includes software developed by the OpenSSL Project
sl@0:  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
sl@0:  *
sl@0:  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
sl@0:  *    endorse or promote products derived from this software without
sl@0:  *    prior written permission. For written permission, please contact
sl@0:  *    licensing@OpenSSL.org.
sl@0:  *
sl@0:  * 5. Products derived from this software may not be called "OpenSSL"
sl@0:  *    nor may "OpenSSL" appear in their names without prior written
sl@0:  *    permission of the OpenSSL Project.
sl@0:  *
sl@0:  * 6. Redistributions of any form whatsoever must retain the following
sl@0:  *    acknowledgment:
sl@0:  *    "This product includes software developed by the OpenSSL Project
sl@0:  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
sl@0:  *
sl@0:  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
sl@0:  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
sl@0:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
sl@0:  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
sl@0:  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
sl@0:  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
sl@0:  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
sl@0:  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
sl@0:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
sl@0:  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
sl@0:  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
sl@0:  * OF THE POSSIBILITY OF SUCH DAMAGE.
sl@0:  * ====================================================================
sl@0:  *
sl@0:  * This product includes cryptographic software written by Eric Young
sl@0:  * (eay@cryptsoft.com).  This product includes software written by Tim
sl@0:  * Hudson (tjh@cryptsoft.com).
sl@0:  *
sl@0:  */
sl@0: /*
sl@0:  © Portions copyright (c) 2006 Nokia Corporation.  All rights reserved.
sl@0:  */
sl@0: /* Simple PKCS#7 processing functions */
sl@0: 
sl@0: #include <stdio.h>
sl@0: #include "cryptlib.h"
sl@0: #include <openssl/x509.h>
sl@0: #include <openssl/x509v3.h>
sl@0: 
sl@0: EXPORT_C PKCS7 *PKCS7_sign(X509 *signcert, EVP_PKEY *pkey, STACK_OF(X509) *certs,
sl@0: 		  BIO *data, int flags)
sl@0: {
sl@0: 	PKCS7 *p7 = NULL;
sl@0: 	PKCS7_SIGNER_INFO *si;
sl@0: 	BIO *p7bio = NULL;
sl@0: 	STACK_OF(X509_ALGOR) *smcap = NULL;
sl@0: 	int i;
sl@0: 
sl@0: 	if(!X509_check_private_key(signcert, pkey)) {
sl@0: 		PKCS7err(PKCS7_F_PKCS7_SIGN,PKCS7_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE);
sl@0:                 return NULL;
sl@0: 	}
sl@0: 
sl@0: 	if(!(p7 = PKCS7_new())) {
sl@0: 		PKCS7err(PKCS7_F_PKCS7_SIGN,ERR_R_MALLOC_FAILURE);
sl@0: 		return NULL;
sl@0: 	}
sl@0: 
sl@0: 	if (!PKCS7_set_type(p7, NID_pkcs7_signed))
sl@0: 		goto err;
sl@0: 
sl@0: 	if (!PKCS7_content_new(p7, NID_pkcs7_data))
sl@0: 		goto err;
sl@0: 
sl@0: 	if (!(si = PKCS7_add_signature(p7,signcert,pkey,EVP_sha1()))) {
sl@0: 		PKCS7err(PKCS7_F_PKCS7_SIGN,PKCS7_R_PKCS7_ADD_SIGNATURE_ERROR);
sl@0: 		goto err;
sl@0: 	}
sl@0: 
sl@0: 	if(!(flags & PKCS7_NOCERTS)) {
sl@0: 		if (!PKCS7_add_certificate(p7, signcert))
sl@0: 			goto err;
sl@0: 		if(certs) for(i = 0; i < sk_X509_num(certs); i++)
sl@0: 			if (!PKCS7_add_certificate(p7, sk_X509_value(certs, i)))
sl@0: 				goto err;
sl@0: 	}
sl@0: 
sl@0: 	if(!(flags & PKCS7_NOATTR)) {
sl@0: 		if (!PKCS7_add_signed_attribute(si, NID_pkcs9_contentType,
sl@0: 				V_ASN1_OBJECT, OBJ_nid2obj(NID_pkcs7_data)))
sl@0: 			goto err;
sl@0: 		/* Add SMIMECapabilities */
sl@0: 		if(!(flags & PKCS7_NOSMIMECAP))
sl@0: 		{
sl@0: 		if(!(smcap = sk_X509_ALGOR_new_null())) {
sl@0: 			PKCS7err(PKCS7_F_PKCS7_SIGN,ERR_R_MALLOC_FAILURE);
sl@0: 			goto err;
sl@0: 		}
sl@0: #ifndef OPENSSL_NO_DES
sl@0: 		if (!PKCS7_simple_smimecap (smcap, NID_des_ede3_cbc, -1))
sl@0: 			goto err;
sl@0: #endif
sl@0: #ifndef OPENSSL_NO_RC2
sl@0: 		if (!PKCS7_simple_smimecap (smcap, NID_rc2_cbc, 128))
sl@0: 			goto err;
sl@0: 		if (!PKCS7_simple_smimecap (smcap, NID_rc2_cbc, 64))
sl@0: 			goto err;
sl@0: #endif
sl@0: #ifndef OPENSSL_NO_DES
sl@0: 		if (!PKCS7_simple_smimecap (smcap, NID_des_cbc, -1))
sl@0: 			goto err;
sl@0: #endif
sl@0: #ifndef OPENSSL_NO_RC2
sl@0: 		if (!PKCS7_simple_smimecap (smcap, NID_rc2_cbc, 40))
sl@0: 			goto err;
sl@0: #endif
sl@0: 		if (!PKCS7_add_attrib_smimecap (si, smcap))
sl@0: 			goto err;
sl@0: 		sk_X509_ALGOR_pop_free(smcap, X509_ALGOR_free);
sl@0: 		smcap = NULL;
sl@0: 		}
sl@0: 	}
sl@0: 	if(flags & PKCS7_DETACHED)PKCS7_set_detached(p7, 1);
sl@0: 
sl@0: 	if (flags & PKCS7_STREAM)
sl@0: 		return p7;
sl@0: 
sl@0: 	if (!(p7bio = PKCS7_dataInit(p7, NULL))) {
sl@0: 		PKCS7err(PKCS7_F_PKCS7_SIGN,ERR_R_MALLOC_FAILURE);
sl@0: 		goto err;
sl@0: 	}
sl@0: 
sl@0: 	SMIME_crlf_copy(data, p7bio, flags);
sl@0: 
sl@0: 	        if (!PKCS7_dataFinal(p7,p7bio)) {
sl@0: 		PKCS7err(PKCS7_F_PKCS7_SIGN,PKCS7_R_PKCS7_DATASIGN);
sl@0: 		goto err;
sl@0: 	}
sl@0: 
sl@0: 	BIO_free_all(p7bio);
sl@0: 	return p7;
sl@0: err:
sl@0: 	sk_X509_ALGOR_pop_free(smcap, X509_ALGOR_free);
sl@0: 	BIO_free_all(p7bio);
sl@0: 	PKCS7_free(p7);
sl@0: 	return NULL;
sl@0: }
sl@0: 
sl@0: EXPORT_C int PKCS7_verify(PKCS7 *p7, STACK_OF(X509) *certs, X509_STORE *store,
sl@0: 					BIO *indata, BIO *out, int flags)
sl@0: {
sl@0: 	STACK_OF(X509) *signers;
sl@0: 	X509 *signer;
sl@0: 	STACK_OF(PKCS7_SIGNER_INFO) *sinfos;
sl@0: 	PKCS7_SIGNER_INFO *si;
sl@0: 	X509_STORE_CTX cert_ctx;
sl@0: #ifndef SYMBIAN	
sl@0: 	char buf[4096];
sl@0: #else
sl@0:   char buf[512];
sl@0: #endif
sl@0: 	
sl@0: 	int i, j=0, k, ret = 0;
sl@0: 	BIO *p7bio;
sl@0: 	BIO *tmpin, *tmpout;
sl@0: 
sl@0: 	if(!p7) {
sl@0: 		PKCS7err(PKCS7_F_PKCS7_VERIFY,PKCS7_R_INVALID_NULL_POINTER);
sl@0: 		return 0;
sl@0: 	}
sl@0: 
sl@0: 	if(!PKCS7_type_is_signed(p7)) {
sl@0: 		PKCS7err(PKCS7_F_PKCS7_VERIFY,PKCS7_R_WRONG_CONTENT_TYPE);
sl@0: 		return 0;
sl@0: 	}
sl@0: 
sl@0: 	/* Check for no data and no content: no data to verify signature */
sl@0: 	if(PKCS7_get_detached(p7) && !indata) {
sl@0: 		PKCS7err(PKCS7_F_PKCS7_VERIFY,PKCS7_R_NO_CONTENT);
sl@0: 		return 0;
sl@0: 	}
sl@0: #if 0
sl@0: 	/* NB: this test commented out because some versions of Netscape
sl@0: 	 * illegally include zero length content when signing data.
sl@0: 	 */
sl@0: 
sl@0: 	/* Check for data and content: two sets of data */
sl@0: 	if(!PKCS7_get_detached(p7) && indata) {
sl@0: 				PKCS7err(PKCS7_F_PKCS7_VERIFY,PKCS7_R_CONTENT_AND_DATA_PRESENT);
sl@0: 		return 0;
sl@0: 	}
sl@0: #endif
sl@0: 
sl@0: 	sinfos = PKCS7_get_signer_info(p7);
sl@0: 
sl@0: 	if(!sinfos || !sk_PKCS7_SIGNER_INFO_num(sinfos)) {
sl@0: 		PKCS7err(PKCS7_F_PKCS7_VERIFY,PKCS7_R_NO_SIGNATURES_ON_DATA);
sl@0: 		return 0;
sl@0: 	}
sl@0: 
sl@0: 
sl@0: 	signers = PKCS7_get0_signers(p7, certs, flags);
sl@0: 
sl@0: 	if(!signers) return 0;
sl@0: 
sl@0: 	/* Now verify the certificates */
sl@0: 
sl@0: 	if (!(flags & PKCS7_NOVERIFY)) for (k = 0; k < sk_X509_num(signers); k++) {
sl@0: 		signer = sk_X509_value (signers, k);
sl@0: 		if (!(flags & PKCS7_NOCHAIN)) {
sl@0: 			if(!X509_STORE_CTX_init(&cert_ctx, store, signer,
sl@0: 							p7->d.sign->cert))
sl@0: 				{
sl@0: 				PKCS7err(PKCS7_F_PKCS7_VERIFY,ERR_R_X509_LIB);
sl@0: 				sk_X509_free(signers);
sl@0: 				return 0;
sl@0: 				}
sl@0: 			X509_STORE_CTX_set_purpose(&cert_ctx,
sl@0: 						X509_PURPOSE_SMIME_SIGN);
sl@0: 		} else if(!X509_STORE_CTX_init (&cert_ctx, store, signer, NULL)) {
sl@0: 			PKCS7err(PKCS7_F_PKCS7_VERIFY,ERR_R_X509_LIB);
sl@0: 			sk_X509_free(signers);
sl@0: 			return 0;
sl@0: 		}
sl@0: 		if (!(flags & PKCS7_NOCRL))
sl@0: 			X509_STORE_CTX_set0_crls(&cert_ctx, p7->d.sign->crl);
sl@0: 		i = X509_verify_cert(&cert_ctx);
sl@0: 		if (i <= 0) j = X509_STORE_CTX_get_error(&cert_ctx);
sl@0: 		X509_STORE_CTX_cleanup(&cert_ctx);
sl@0: 		if (i <= 0) {
sl@0: 			PKCS7err(PKCS7_F_PKCS7_VERIFY,PKCS7_R_CERTIFICATE_VERIFY_ERROR);
sl@0: 			ERR_add_error_data(2, "Verify error:",
sl@0: 					 X509_verify_cert_error_string(j));
sl@0: 			sk_X509_free(signers);
sl@0: 			return 0;
sl@0: 		}
sl@0: 		/* Check for revocation status here */
sl@0: 	}
sl@0: 
sl@0: 	/* Performance optimization: if the content is a memory BIO then
sl@0: 	 * store its contents in a temporary read only memory BIO. This
sl@0: 	 * avoids potentially large numbers of slow copies of data which will
sl@0: 	 * occur when reading from a read write memory BIO when signatures
sl@0: 	 * are calculated.
sl@0: 	 */
sl@0: 
sl@0: 	if (indata && (BIO_method_type(indata) == BIO_TYPE_MEM))
sl@0: 		{
sl@0: 		char *ptr;
sl@0: 		long len;
sl@0: 		len = BIO_get_mem_data(indata, &ptr);
sl@0: 		tmpin = BIO_new_mem_buf(ptr, len);
sl@0: 		if (tmpin == NULL)
sl@0: 			{
sl@0: 			PKCS7err(PKCS7_F_PKCS7_VERIFY,ERR_R_MALLOC_FAILURE);
sl@0: 			return 0;
sl@0: 			}
sl@0: 		}
sl@0: 	else
sl@0: 		tmpin = indata;
sl@0: 		
sl@0: 
sl@0: 	if (!(p7bio=PKCS7_dataInit(p7,tmpin)))
sl@0: 		goto err;
sl@0: 
sl@0: 	if(flags & PKCS7_TEXT) {
sl@0: 		if(!(tmpout = BIO_new(BIO_s_mem()))) {
sl@0: 			PKCS7err(PKCS7_F_PKCS7_VERIFY,ERR_R_MALLOC_FAILURE);
sl@0: 			goto err;
sl@0: 		}
sl@0: 	} else tmpout = out;
sl@0: 
sl@0: 	/* We now have to 'read' from p7bio to calculate digests etc. */
sl@0: 	for (;;)
sl@0: 	{
sl@0: 		i=BIO_read(p7bio,buf,sizeof(buf));
sl@0: 		if (i <= 0) break;
sl@0: 		if (tmpout) BIO_write(tmpout, buf, i);
sl@0: 	}
sl@0: 
sl@0: 	if(flags & PKCS7_TEXT) {
sl@0: 		if(!SMIME_text(tmpout, out)) {
sl@0: 			PKCS7err(PKCS7_F_PKCS7_VERIFY,PKCS7_R_SMIME_TEXT_ERROR);
sl@0: 			BIO_free(tmpout);
sl@0: 			goto err;
sl@0: 		}
sl@0: 		BIO_free(tmpout);
sl@0: 	}
sl@0: 
sl@0: 	/* Now Verify All Signatures */
sl@0: 	if (!(flags & PKCS7_NOSIGS))
sl@0: 	    for (i=0; i<sk_PKCS7_SIGNER_INFO_num(sinfos); i++)
sl@0: 		{
sl@0: 		si=sk_PKCS7_SIGNER_INFO_value(sinfos,i);
sl@0: 		signer = sk_X509_value (signers, i);
sl@0: 		j=PKCS7_signatureVerify(p7bio,p7,si, signer);
sl@0: 		if (j <= 0) {
sl@0: 			PKCS7err(PKCS7_F_PKCS7_VERIFY,PKCS7_R_SIGNATURE_FAILURE);
sl@0: 			goto err;
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: 	ret = 1;
sl@0: 
sl@0: 	err:
sl@0: 	
sl@0: 	if (tmpin == indata)
sl@0: 		{
sl@0: 		if (indata) BIO_pop(p7bio);
sl@0: 		}
sl@0: 	BIO_free_all(p7bio);
sl@0: 
sl@0: 	sk_X509_free(signers);
sl@0: 
sl@0: 	return ret;
sl@0: }
sl@0: 
sl@0: EXPORT_C STACK_OF(X509) *PKCS7_get0_signers(PKCS7 *p7, STACK_OF(X509) *certs, int flags)
sl@0: {
sl@0: 	STACK_OF(X509) *signers;
sl@0: 	STACK_OF(PKCS7_SIGNER_INFO) *sinfos;
sl@0: 	PKCS7_SIGNER_INFO *si;
sl@0: 	PKCS7_ISSUER_AND_SERIAL *ias;
sl@0: 	X509 *signer;
sl@0: 	int i;
sl@0: 
sl@0: 	if(!p7) {
sl@0: 		PKCS7err(PKCS7_F_PKCS7_GET0_SIGNERS,PKCS7_R_INVALID_NULL_POINTER);
sl@0: 		return NULL;
sl@0: 	}
sl@0: 
sl@0: 	if(!PKCS7_type_is_signed(p7)) {
sl@0: 		PKCS7err(PKCS7_F_PKCS7_GET0_SIGNERS,PKCS7_R_WRONG_CONTENT_TYPE);
sl@0: 		return NULL;
sl@0: 	}
sl@0: 
sl@0: 	/* Collect all the signers together */
sl@0: 
sl@0: 	sinfos = PKCS7_get_signer_info(p7);
sl@0: 
sl@0: 	if(sk_PKCS7_SIGNER_INFO_num(sinfos) <= 0) {
sl@0: 		PKCS7err(PKCS7_F_PKCS7_GET0_SIGNERS,PKCS7_R_NO_SIGNERS);
sl@0: 		return NULL;
sl@0: 	}
sl@0: 
sl@0: 	if(!(signers = sk_X509_new_null())) {
sl@0: 		PKCS7err(PKCS7_F_PKCS7_GET0_SIGNERS,ERR_R_MALLOC_FAILURE);
sl@0: 		return NULL;
sl@0: 	}
sl@0: 
sl@0: 	for (i = 0; i < sk_PKCS7_SIGNER_INFO_num(sinfos); i++)
sl@0: 	{
sl@0: 	    si = sk_PKCS7_SIGNER_INFO_value(sinfos, i);
sl@0: 	    ias = si->issuer_and_serial;
sl@0: 	    signer = NULL;
sl@0: 		/* If any certificates passed they take priority */
sl@0: 	    if (certs) signer = X509_find_by_issuer_and_serial (certs,
sl@0: 					 	ias->issuer, ias->serial);
sl@0: 	    if (!signer && !(flags & PKCS7_NOINTERN)
sl@0: 			&& p7->d.sign->cert) signer =
sl@0: 		              X509_find_by_issuer_and_serial (p7->d.sign->cert,
sl@0: 					      	ias->issuer, ias->serial);
sl@0: 	    if (!signer) {
sl@0: 			PKCS7err(PKCS7_F_PKCS7_GET0_SIGNERS,PKCS7_R_SIGNER_CERTIFICATE_NOT_FOUND);
sl@0: 			sk_X509_free(signers);
sl@0: 			return NULL;
sl@0: 	    }
sl@0: 
sl@0: 	    if (!sk_X509_push(signers, signer)) {
sl@0: 			sk_X509_free(signers);
sl@0: 			return NULL;
sl@0: 	    }
sl@0: 	}
sl@0: 	return signers;
sl@0: }
sl@0: 
sl@0: 
sl@0: /* Build a complete PKCS#7 enveloped data */
sl@0: 
sl@0: EXPORT_C PKCS7 *PKCS7_encrypt(STACK_OF(X509) *certs, BIO *in, const EVP_CIPHER *cipher,
sl@0: 								int flags)
sl@0: {
sl@0: 	PKCS7 *p7;
sl@0: 	BIO *p7bio = NULL;
sl@0: 	int i;
sl@0: 	X509 *x509;
sl@0: 	if(!(p7 = PKCS7_new())) {
sl@0: 		PKCS7err(PKCS7_F_PKCS7_ENCRYPT,ERR_R_MALLOC_FAILURE);
sl@0: 		return NULL;
sl@0: 	}
sl@0: 
sl@0: 	if (!PKCS7_set_type(p7, NID_pkcs7_enveloped))
sl@0: 		goto err;
sl@0: 	if(!PKCS7_set_cipher(p7, cipher)) {
sl@0: 		PKCS7err(PKCS7_F_PKCS7_ENCRYPT,PKCS7_R_ERROR_SETTING_CIPHER);
sl@0: 		goto err;
sl@0: 	}
sl@0: 
sl@0: 	for(i = 0; i < sk_X509_num(certs); i++) {
sl@0: 		x509 = sk_X509_value(certs, i);
sl@0: 		if(!PKCS7_add_recipient(p7, x509)) {
sl@0: 			PKCS7err(PKCS7_F_PKCS7_ENCRYPT,
sl@0: 					PKCS7_R_ERROR_ADDING_RECIPIENT);
sl@0: 			goto err;
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: 	if(!(p7bio = PKCS7_dataInit(p7, NULL))) {
sl@0: 		PKCS7err(PKCS7_F_PKCS7_ENCRYPT,ERR_R_MALLOC_FAILURE);
sl@0: 		goto err;
sl@0: 	}
sl@0: 
sl@0: 	SMIME_crlf_copy(in, p7bio, flags);
sl@0: 
sl@0: 	(void)BIO_flush(p7bio);
sl@0: 
sl@0:         if (!PKCS7_dataFinal(p7,p7bio)) {
sl@0: 		PKCS7err(PKCS7_F_PKCS7_ENCRYPT,PKCS7_R_PKCS7_DATAFINAL_ERROR);
sl@0: 		goto err;
sl@0: 	}
sl@0:         BIO_free_all(p7bio);
sl@0: 
sl@0: 	return p7;
sl@0: 
sl@0: 	err:
sl@0: 
sl@0: 	BIO_free_all(p7bio);
sl@0: 	PKCS7_free(p7);
sl@0: 	return NULL;
sl@0: 
sl@0: }
sl@0: 
sl@0: EXPORT_C int PKCS7_decrypt(PKCS7 *p7, EVP_PKEY *pkey, X509 *cert, BIO *data, int flags)
sl@0: {
sl@0: 	BIO *tmpmem;
sl@0: 	int ret, i;
sl@0: #ifndef SYMBIAN	
sl@0: 	char buf[4096];
sl@0: #else
sl@0:   char buf[512];
sl@0: #endif	
sl@0: 
sl@0: 	if(!p7) {
sl@0: 		PKCS7err(PKCS7_F_PKCS7_DECRYPT,PKCS7_R_INVALID_NULL_POINTER);
sl@0: 		return 0;
sl@0: 	}
sl@0: 
sl@0: 	if(!PKCS7_type_is_enveloped(p7)) {
sl@0: 		PKCS7err(PKCS7_F_PKCS7_DECRYPT,PKCS7_R_WRONG_CONTENT_TYPE);
sl@0: 		return 0;
sl@0: 	}
sl@0: 
sl@0: 	if(cert && !X509_check_private_key(cert, pkey)) {
sl@0: 		PKCS7err(PKCS7_F_PKCS7_DECRYPT,
sl@0: 				PKCS7_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE);
sl@0: 		return 0;
sl@0: 	}
sl@0: 
sl@0: 	if(!(tmpmem = PKCS7_dataDecode(p7, pkey, NULL, cert))) {
sl@0: 		PKCS7err(PKCS7_F_PKCS7_DECRYPT, PKCS7_R_DECRYPT_ERROR);
sl@0: 		return 0;
sl@0: 	}
sl@0: 
sl@0: 	if (flags & PKCS7_TEXT) {
sl@0: 		BIO *tmpbuf, *bread;
sl@0: 		/* Encrypt BIOs can't do BIO_gets() so add a buffer BIO */
sl@0: 		if(!(tmpbuf = BIO_new(BIO_f_buffer()))) {
sl@0: 			PKCS7err(PKCS7_F_PKCS7_DECRYPT, ERR_R_MALLOC_FAILURE);
sl@0: 			BIO_free_all(tmpmem);
sl@0: 			return 0;
sl@0: 		}
sl@0: 		if(!(bread = BIO_push(tmpbuf, tmpmem))) {
sl@0: 			PKCS7err(PKCS7_F_PKCS7_DECRYPT, ERR_R_MALLOC_FAILURE);
sl@0: 			BIO_free_all(tmpbuf);
sl@0: 			BIO_free_all(tmpmem);
sl@0: 			return 0;
sl@0: 		}
sl@0: 		ret = SMIME_text(bread, data);
sl@0: 		BIO_free_all(bread);
sl@0: 		return ret;
sl@0: 	} else {
sl@0: 		for(;;) {
sl@0: 			i = BIO_read(tmpmem, buf, sizeof(buf));
sl@0: 			if(i <= 0) break;
sl@0: 			BIO_write(data, buf, i);
sl@0: 		}
sl@0: 		BIO_free_all(tmpmem);
sl@0: 		return 1;
sl@0: 	}
sl@0: }