sl@0: /* crypto/pkcs7/pk7_doit.c */
sl@0: /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
sl@0:  * All rights reserved.
sl@0:  *
sl@0:  * This package is an SSL implementation written
sl@0:  * by Eric Young (eay@cryptsoft.com).
sl@0:  * The implementation was written so as to conform with Netscapes SSL.
sl@0:  * 
sl@0:  * This library is free for commercial and non-commercial use as long as
sl@0:  * the following conditions are aheared to.  The following conditions
sl@0:  * apply to all code found in this distribution, be it the RC4, RSA,
sl@0:  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
sl@0:  * included with this distribution is covered by the same copyright terms
sl@0:  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
sl@0:  * 
sl@0:  * Copyright remains Eric Young's, and as such any Copyright notices in
sl@0:  * the code are not to be removed.
sl@0:  * If this package is used in a product, Eric Young should be given attribution
sl@0:  * as the author of the parts of the library used.
sl@0:  * This can be in the form of a textual message at program startup or
sl@0:  * in documentation (online or textual) provided with the package.
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:  * 1. Redistributions of source code must retain the copyright
sl@0:  *    notice, this list of conditions and the following disclaimer.
sl@0:  * 2. Redistributions in binary form must reproduce the above copyright
sl@0:  *    notice, this list of conditions and the following disclaimer in the
sl@0:  *    documentation and/or other materials provided with the distribution.
sl@0:  * 3. All advertising materials mentioning features or use of this software
sl@0:  *    must display the following acknowledgement:
sl@0:  *    "This product includes cryptographic software written by
sl@0:  *     Eric Young (eay@cryptsoft.com)"
sl@0:  *    The word 'cryptographic' can be left out if the rouines from the library
sl@0:  *    being used are not cryptographic related :-).
sl@0:  * 4. If you include any Windows specific code (or a derivative thereof) from 
sl@0:  *    the apps directory (application code) you must include an acknowledgement:
sl@0:  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
sl@0:  * 
sl@0:  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
sl@0:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
sl@0:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
sl@0:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
sl@0:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
sl@0:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
sl@0:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
sl@0:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
sl@0:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
sl@0:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
sl@0:  * SUCH DAMAGE.
sl@0:  * 
sl@0:  * The licence and distribution terms for any publically available version or
sl@0:  * derivative of this code cannot be changed.  i.e. this code cannot simply be
sl@0:  * copied and put under another distribution licence
sl@0:  * [including the GNU Public Licence.]
sl@0:  */
sl@0: 
sl@0: #include <stdio.h>
sl@0: #include "cryptlib.h"
sl@0: #include <openssl/rand.h>
sl@0: #include <openssl/objects.h>
sl@0: #include <openssl/x509.h>
sl@0: #include <openssl/x509v3.h>
sl@0: #include <openssl/err.h>
sl@0: 
sl@0: static int add_attribute(STACK_OF(X509_ATTRIBUTE) **sk, int nid, int atrtype,
sl@0: 			 void *value);
sl@0: static ASN1_TYPE *get_attribute(STACK_OF(X509_ATTRIBUTE) *sk, int nid);
sl@0: 
sl@0: static int PKCS7_type_is_other(PKCS7* p7)
sl@0: 	{
sl@0: 	int isOther=1;
sl@0: 	
sl@0: 	int nid=OBJ_obj2nid(p7->type);
sl@0: 
sl@0: 	switch( nid )
sl@0: 		{
sl@0: 	case NID_pkcs7_data:
sl@0: 	case NID_pkcs7_signed:
sl@0: 	case NID_pkcs7_enveloped:
sl@0: 	case NID_pkcs7_signedAndEnveloped:
sl@0: 	case NID_pkcs7_digest:
sl@0: 	case NID_pkcs7_encrypted:
sl@0: 		isOther=0;
sl@0: 		break;
sl@0: 	default:
sl@0: 		isOther=1;
sl@0: 		}
sl@0: 
sl@0: 	return isOther;
sl@0: 
sl@0: 	}
sl@0: 
sl@0: static ASN1_OCTET_STRING *PKCS7_get_octet_string(PKCS7 *p7)
sl@0: 	{
sl@0: 	if ( PKCS7_type_is_data(p7))
sl@0: 		return p7->d.data;
sl@0: 	if ( PKCS7_type_is_other(p7) && p7->d.other
sl@0: 		&& (p7->d.other->type == V_ASN1_OCTET_STRING))
sl@0: 		return p7->d.other->value.octet_string;
sl@0: 	return NULL;
sl@0: 	}
sl@0: 
sl@0: static int PKCS7_bio_add_digest(BIO **pbio, X509_ALGOR *alg)
sl@0: 	{
sl@0: 	BIO *btmp;
sl@0: 	const EVP_MD *md;
sl@0: 	if ((btmp=BIO_new(BIO_f_md())) == NULL)
sl@0: 		{
sl@0: 		PKCS7err(PKCS7_F_PKCS7_BIO_ADD_DIGEST,ERR_R_BIO_LIB);
sl@0: 		goto err;
sl@0: 		}
sl@0: 
sl@0: 	md=EVP_get_digestbyobj(alg->algorithm);
sl@0: 	if (md == NULL)
sl@0: 		{
sl@0: 		PKCS7err(PKCS7_F_PKCS7_BIO_ADD_DIGEST,PKCS7_R_UNKNOWN_DIGEST_TYPE);
sl@0: 		goto err;
sl@0: 		}
sl@0: 
sl@0: 	BIO_set_md(btmp,md);
sl@0: 	if (*pbio == NULL)
sl@0: 		*pbio=btmp;
sl@0: 	else if (!BIO_push(*pbio,btmp))
sl@0: 		{
sl@0: 		PKCS7err(PKCS7_F_PKCS7_BIO_ADD_DIGEST,ERR_R_BIO_LIB);
sl@0: 		goto err;
sl@0: 		}
sl@0: 	btmp=NULL;
sl@0: 
sl@0: 	return 1;
sl@0: 
sl@0: 	err:
sl@0: 	if (btmp)
sl@0: 		BIO_free(btmp);
sl@0: 	return 0;
sl@0: 
sl@0: 	}
sl@0: 
sl@0: EXPORT_C BIO *PKCS7_dataInit(PKCS7 *p7, BIO *bio)
sl@0: 	{
sl@0: 	int i;
sl@0: 	BIO *out=NULL,*btmp=NULL;
sl@0: 	X509_ALGOR *xa = NULL;
sl@0: 	const EVP_CIPHER *evp_cipher=NULL;
sl@0: 	STACK_OF(X509_ALGOR) *md_sk=NULL;
sl@0: 	STACK_OF(PKCS7_RECIP_INFO) *rsk=NULL;
sl@0: 	X509_ALGOR *xalg=NULL;
sl@0: 	PKCS7_RECIP_INFO *ri=NULL;
sl@0: 	EVP_PKEY *pkey;
sl@0: 	ASN1_OCTET_STRING *os=NULL;
sl@0: 
sl@0: 	i=OBJ_obj2nid(p7->type);
sl@0: 	p7->state=PKCS7_S_HEADER;
sl@0: 
sl@0: 	switch (i)
sl@0: 		{
sl@0: 	case NID_pkcs7_signed:
sl@0: 		md_sk=p7->d.sign->md_algs;
sl@0: 		os = PKCS7_get_octet_string(p7->d.sign->contents);
sl@0: 		break;
sl@0: 	case NID_pkcs7_signedAndEnveloped:
sl@0: 		rsk=p7->d.signed_and_enveloped->recipientinfo;
sl@0: 		md_sk=p7->d.signed_and_enveloped->md_algs;
sl@0: 		xalg=p7->d.signed_and_enveloped->enc_data->algorithm;
sl@0: 		evp_cipher=p7->d.signed_and_enveloped->enc_data->cipher;
sl@0: 		if (evp_cipher == NULL)
sl@0: 			{
sl@0: 			PKCS7err(PKCS7_F_PKCS7_DATAINIT,
sl@0: 						PKCS7_R_CIPHER_NOT_INITIALIZED);
sl@0: 			goto err;
sl@0: 			}
sl@0: 		break;
sl@0: 	case NID_pkcs7_enveloped:
sl@0: 		rsk=p7->d.enveloped->recipientinfo;
sl@0: 		xalg=p7->d.enveloped->enc_data->algorithm;
sl@0: 		evp_cipher=p7->d.enveloped->enc_data->cipher;
sl@0: 		if (evp_cipher == NULL)
sl@0: 			{
sl@0: 			PKCS7err(PKCS7_F_PKCS7_DATAINIT,
sl@0: 						PKCS7_R_CIPHER_NOT_INITIALIZED);
sl@0: 			goto err;
sl@0: 			}
sl@0: 		break;
sl@0: 	case NID_pkcs7_digest:
sl@0: 		xa = p7->d.digest->md;
sl@0: 		os = PKCS7_get_octet_string(p7->d.digest->contents);
sl@0: 		break;
sl@0: 	default:
sl@0: 		PKCS7err(PKCS7_F_PKCS7_DATAINIT,PKCS7_R_UNSUPPORTED_CONTENT_TYPE);
sl@0: 	        goto err;
sl@0: 		}
sl@0: 
sl@0: 	for (i=0; i<sk_X509_ALGOR_num(md_sk); i++)
sl@0: 		if (!PKCS7_bio_add_digest(&out, sk_X509_ALGOR_value(md_sk, i)))
sl@0: 			goto err;
sl@0: 
sl@0: 	if (xa && !PKCS7_bio_add_digest(&out, xa))
sl@0: 			goto err;
sl@0: 
sl@0: 	if (evp_cipher != NULL)
sl@0: 		{
sl@0: 		unsigned char key[EVP_MAX_KEY_LENGTH];
sl@0: 		unsigned char iv[EVP_MAX_IV_LENGTH];
sl@0: 		int keylen,ivlen;
sl@0: 		int jj,max;
sl@0: 		unsigned char *tmp;
sl@0: 		EVP_CIPHER_CTX *ctx;
sl@0: 
sl@0: 		if ((btmp=BIO_new(BIO_f_cipher())) == NULL)
sl@0: 			{
sl@0: 			PKCS7err(PKCS7_F_PKCS7_DATAINIT,ERR_R_BIO_LIB);
sl@0: 			goto err;
sl@0: 			}
sl@0: 		BIO_get_cipher_ctx(btmp, &ctx);
sl@0: 		keylen=EVP_CIPHER_key_length(evp_cipher);
sl@0: 		ivlen=EVP_CIPHER_iv_length(evp_cipher);
sl@0: 		xalg->algorithm = OBJ_nid2obj(EVP_CIPHER_type(evp_cipher));
sl@0: 		if (ivlen > 0)
sl@0: 			if (RAND_pseudo_bytes(iv,ivlen) <= 0)
sl@0: 				goto err;
sl@0: 		if (EVP_CipherInit_ex(ctx, evp_cipher, NULL, NULL, NULL, 1)<=0)
sl@0: 			goto err;
sl@0: 		if (EVP_CIPHER_CTX_rand_key(ctx, key) <= 0)
sl@0: 			goto err;
sl@0: 		if (EVP_CipherInit_ex(ctx, NULL, NULL, key, iv, 1) <= 0)
sl@0: 			goto err;
sl@0: 
sl@0: 		if (ivlen > 0) {
sl@0: 			if (xalg->parameter == NULL) {
sl@0: 				xalg->parameter = ASN1_TYPE_new();
sl@0: 				if (xalg->parameter == NULL)
sl@0: 					goto err;
sl@0: 			}
sl@0: 			if(EVP_CIPHER_param_to_asn1(ctx, xalg->parameter) < 0)
sl@0: 								       goto err;
sl@0: 		}
sl@0: 
sl@0: 		/* Lets do the pub key stuff :-) */
sl@0: 		max=0;
sl@0: 		for (i=0; i<sk_PKCS7_RECIP_INFO_num(rsk); i++)
sl@0: 			{
sl@0: 			ri=sk_PKCS7_RECIP_INFO_value(rsk,i);
sl@0: 			if (ri->cert == NULL)
sl@0: 				{
sl@0: 				PKCS7err(PKCS7_F_PKCS7_DATAINIT,PKCS7_R_MISSING_CERIPEND_INFO);
sl@0: 				goto err;
sl@0: 				}
sl@0: 			if ((pkey=X509_get_pubkey(ri->cert)) == NULL)
sl@0: 				goto err;
sl@0: 			jj=EVP_PKEY_size(pkey);
sl@0: 			EVP_PKEY_free(pkey);
sl@0: 			if (max < jj) max=jj;
sl@0: 			}
sl@0: 		if ((tmp=(unsigned char *)OPENSSL_malloc(max)) == NULL)
sl@0: 			{
sl@0: 			PKCS7err(PKCS7_F_PKCS7_DATAINIT,ERR_R_MALLOC_FAILURE);
sl@0: 			goto err;
sl@0: 			}
sl@0: 		for (i=0; i<sk_PKCS7_RECIP_INFO_num(rsk); i++)
sl@0: 			{
sl@0: 			ri=sk_PKCS7_RECIP_INFO_value(rsk,i);
sl@0: 			if ((pkey=X509_get_pubkey(ri->cert)) == NULL)
sl@0: 				goto err;
sl@0: 			jj=EVP_PKEY_encrypt(tmp,key,keylen,pkey);
sl@0: 			EVP_PKEY_free(pkey);
sl@0: 			if (jj <= 0)
sl@0: 				{
sl@0: 				PKCS7err(PKCS7_F_PKCS7_DATAINIT,ERR_R_EVP_LIB);
sl@0: 				OPENSSL_free(tmp);
sl@0: 				goto err;
sl@0: 				}
sl@0: 			if (!M_ASN1_OCTET_STRING_set(ri->enc_key,tmp,jj))
sl@0: 				{
sl@0: 				PKCS7err(PKCS7_F_PKCS7_DATAINIT,
sl@0: 					ERR_R_MALLOC_FAILURE);
sl@0: 				OPENSSL_free(tmp);
sl@0: 				goto err;
sl@0: 				}
sl@0: 			}
sl@0: 		OPENSSL_free(tmp);
sl@0: 		OPENSSL_cleanse(key, keylen);
sl@0: 
sl@0: 		if (out == NULL)
sl@0: 			out=btmp;
sl@0: 		else
sl@0: 			BIO_push(out,btmp);
sl@0: 		btmp=NULL;
sl@0: 		}
sl@0: 
sl@0: 	if (bio == NULL)
sl@0: 		{
sl@0: 		if (PKCS7_is_detached(p7))
sl@0: 			bio=BIO_new(BIO_s_null());
sl@0: 		else if (os && os->length > 0)
sl@0: 			bio = BIO_new_mem_buf(os->data, os->length);
sl@0: 		if(bio == NULL)
sl@0: 			{
sl@0: 			bio=BIO_new(BIO_s_mem());
sl@0: 			if (bio == NULL)
sl@0: 				goto err;
sl@0: 			BIO_set_mem_eof_return(bio,0);
sl@0: 			}
sl@0: 		}
sl@0: 	BIO_push(out,bio);
sl@0: 	bio=NULL;
sl@0: 	if (0)
sl@0: 		{
sl@0: err:
sl@0: 		if (out != NULL)
sl@0: 			BIO_free_all(out);
sl@0: 		if (btmp != NULL)
sl@0: 			BIO_free_all(btmp);
sl@0: 		out=NULL;
sl@0: 		}
sl@0: 	return(out);
sl@0: 	}
sl@0: 
sl@0: static int pkcs7_cmp_ri(PKCS7_RECIP_INFO *ri, X509 *pcert)
sl@0: 	{
sl@0: 	int ret;
sl@0: 	ret = X509_NAME_cmp(ri->issuer_and_serial->issuer,
sl@0: 				pcert->cert_info->issuer);
sl@0: 	if (ret)
sl@0: 		return ret;
sl@0: 	return M_ASN1_INTEGER_cmp(pcert->cert_info->serialNumber,
sl@0: 					ri->issuer_and_serial->serial);
sl@0: 	}
sl@0: 
sl@0: /* int */
sl@0: EXPORT_C BIO *PKCS7_dataDecode(PKCS7 *p7, EVP_PKEY *pkey, BIO *in_bio, X509 *pcert)
sl@0: 	{
sl@0: 	int i,j;
sl@0: 	BIO *out=NULL,*btmp=NULL,*etmp=NULL,*bio=NULL;
sl@0: 	unsigned char *tmp=NULL;
sl@0: 	X509_ALGOR *xa;
sl@0: 	ASN1_OCTET_STRING *data_body=NULL;
sl@0: 	const EVP_MD *evp_md;
sl@0: 	const EVP_CIPHER *evp_cipher=NULL;
sl@0: 	EVP_CIPHER_CTX *evp_ctx=NULL;
sl@0: 	X509_ALGOR *enc_alg=NULL;
sl@0: 	STACK_OF(X509_ALGOR) *md_sk=NULL;
sl@0: 	STACK_OF(PKCS7_RECIP_INFO) *rsk=NULL;
sl@0: 	X509_ALGOR *xalg=NULL;
sl@0: 	PKCS7_RECIP_INFO *ri=NULL;
sl@0: 
sl@0: 	i=OBJ_obj2nid(p7->type);
sl@0: 	p7->state=PKCS7_S_HEADER;
sl@0: 
sl@0: 	switch (i)
sl@0: 		{
sl@0: 	case NID_pkcs7_signed:
sl@0: 		data_body=PKCS7_get_octet_string(p7->d.sign->contents);
sl@0: 		md_sk=p7->d.sign->md_algs;
sl@0: 		break;
sl@0: 	case NID_pkcs7_signedAndEnveloped:
sl@0: 		rsk=p7->d.signed_and_enveloped->recipientinfo;
sl@0: 		md_sk=p7->d.signed_and_enveloped->md_algs;
sl@0: 		data_body=p7->d.signed_and_enveloped->enc_data->enc_data;
sl@0: 		enc_alg=p7->d.signed_and_enveloped->enc_data->algorithm;
sl@0: 		evp_cipher=EVP_get_cipherbyobj(enc_alg->algorithm);
sl@0: 		if (evp_cipher == NULL)
sl@0: 			{
sl@0: 			PKCS7err(PKCS7_F_PKCS7_DATADECODE,PKCS7_R_UNSUPPORTED_CIPHER_TYPE);
sl@0: 			goto err;
sl@0: 			}
sl@0: 		xalg=p7->d.signed_and_enveloped->enc_data->algorithm;
sl@0: 		break;
sl@0: 	case NID_pkcs7_enveloped:
sl@0: 		rsk=p7->d.enveloped->recipientinfo;
sl@0: 		enc_alg=p7->d.enveloped->enc_data->algorithm;
sl@0: 		data_body=p7->d.enveloped->enc_data->enc_data;
sl@0: 		evp_cipher=EVP_get_cipherbyobj(enc_alg->algorithm);
sl@0: 		if (evp_cipher == NULL)
sl@0: 			{
sl@0: 			PKCS7err(PKCS7_F_PKCS7_DATADECODE,PKCS7_R_UNSUPPORTED_CIPHER_TYPE);
sl@0: 			goto err;
sl@0: 			}
sl@0: 		xalg=p7->d.enveloped->enc_data->algorithm;
sl@0: 		break;
sl@0: 	default:
sl@0: 		PKCS7err(PKCS7_F_PKCS7_DATADECODE,PKCS7_R_UNSUPPORTED_CONTENT_TYPE);
sl@0: 	        goto err;
sl@0: 		}
sl@0: 
sl@0: 	/* We will be checking the signature */
sl@0: 	if (md_sk != NULL)
sl@0: 		{
sl@0: 		for (i=0; i<sk_X509_ALGOR_num(md_sk); i++)
sl@0: 			{
sl@0: 			xa=sk_X509_ALGOR_value(md_sk,i);
sl@0: 			if ((btmp=BIO_new(BIO_f_md())) == NULL)
sl@0: 				{
sl@0: 				PKCS7err(PKCS7_F_PKCS7_DATADECODE,ERR_R_BIO_LIB);
sl@0: 				goto err;
sl@0: 				}
sl@0: 
sl@0: 			j=OBJ_obj2nid(xa->algorithm);
sl@0: 			evp_md=EVP_get_digestbynid(j);
sl@0: 			if (evp_md == NULL)
sl@0: 				{
sl@0: 				PKCS7err(PKCS7_F_PKCS7_DATADECODE,PKCS7_R_UNKNOWN_DIGEST_TYPE);
sl@0: 				goto err;
sl@0: 				}
sl@0: 
sl@0: 			BIO_set_md(btmp,evp_md);
sl@0: 			if (out == NULL)
sl@0: 				out=btmp;
sl@0: 			else
sl@0: 				BIO_push(out,btmp);
sl@0: 			btmp=NULL;
sl@0: 			}
sl@0: 		}
sl@0: 
sl@0: 	if (evp_cipher != NULL)
sl@0: 		{
sl@0: #if 0
sl@0: 		unsigned char key[EVP_MAX_KEY_LENGTH];
sl@0: 		unsigned char iv[EVP_MAX_IV_LENGTH];
sl@0: 		unsigned char *p;
sl@0: 		int keylen,ivlen;
sl@0: 		int max;
sl@0: 		X509_OBJECT ret;
sl@0: #endif
sl@0: 		int jj;
sl@0: 
sl@0: 		if ((etmp=BIO_new(BIO_f_cipher())) == NULL)
sl@0: 			{
sl@0: 			PKCS7err(PKCS7_F_PKCS7_DATADECODE,ERR_R_BIO_LIB);
sl@0: 			goto err;
sl@0: 			}
sl@0: 
sl@0: 		/* It was encrypted, we need to decrypt the secret key
sl@0: 		 * with the private key */
sl@0: 
sl@0: 		/* Find the recipientInfo which matches the passed certificate
sl@0: 		 * (if any)
sl@0: 		 */
sl@0: 
sl@0: 		if (pcert) {
sl@0: 			for (i=0; i<sk_PKCS7_RECIP_INFO_num(rsk); i++) {
sl@0: 				ri=sk_PKCS7_RECIP_INFO_value(rsk,i);
sl@0: 				if (!pkcs7_cmp_ri(ri, pcert))
sl@0: 					break;
sl@0: 				ri=NULL;
sl@0: 			}
sl@0: 			if (ri == NULL) {
sl@0: 				PKCS7err(PKCS7_F_PKCS7_DATADECODE,
sl@0: 				      PKCS7_R_NO_RECIPIENT_MATCHES_CERTIFICATE);
sl@0: 				goto err;
sl@0: 			}
sl@0: 		}
sl@0: 
sl@0: 		jj=EVP_PKEY_size(pkey);
sl@0: 		tmp=(unsigned char *)OPENSSL_malloc(jj+10);
sl@0: 		if (tmp == NULL)
sl@0: 			{
sl@0: 			PKCS7err(PKCS7_F_PKCS7_DATADECODE,ERR_R_MALLOC_FAILURE);
sl@0: 			goto err;
sl@0: 			}
sl@0: 
sl@0: 		/* If we haven't got a certificate try each ri in turn */
sl@0: 
sl@0: 		if (pcert == NULL)
sl@0: 			{
sl@0: 			for (i=0; i<sk_PKCS7_RECIP_INFO_num(rsk); i++)
sl@0: 				{
sl@0: 				ri=sk_PKCS7_RECIP_INFO_value(rsk,i);
sl@0: 				jj=EVP_PKEY_decrypt(tmp,
sl@0: 					M_ASN1_STRING_data(ri->enc_key),
sl@0: 					M_ASN1_STRING_length(ri->enc_key),
sl@0: 						pkey);
sl@0: 				if (jj > 0)
sl@0: 					break;
sl@0: 				ERR_clear_error();
sl@0: 				ri = NULL;
sl@0: 				}
sl@0: 			if (ri == NULL)
sl@0: 				{
sl@0: 				PKCS7err(PKCS7_F_PKCS7_DATADECODE,
sl@0: 				      PKCS7_R_NO_RECIPIENT_MATCHES_KEY);
sl@0: 				goto err;
sl@0: 				}
sl@0: 			}
sl@0: 		else
sl@0: 			{
sl@0: 			jj=EVP_PKEY_decrypt(tmp,
sl@0: 				M_ASN1_STRING_data(ri->enc_key),
sl@0: 				M_ASN1_STRING_length(ri->enc_key), pkey);
sl@0: 			if (jj <= 0)
sl@0: 				{
sl@0: 				PKCS7err(PKCS7_F_PKCS7_DATADECODE,
sl@0: 								ERR_R_EVP_LIB);
sl@0: 				goto err;
sl@0: 				}
sl@0: 			}
sl@0: 
sl@0: 		evp_ctx=NULL;
sl@0: 		BIO_get_cipher_ctx(etmp,&evp_ctx);
sl@0: 		if (EVP_CipherInit_ex(evp_ctx,evp_cipher,NULL,NULL,NULL,0) <= 0)
sl@0: 			goto err;
sl@0: 		if (EVP_CIPHER_asn1_to_param(evp_ctx,enc_alg->parameter) < 0)
sl@0: 			goto err;
sl@0: 
sl@0: 		if (jj != EVP_CIPHER_CTX_key_length(evp_ctx)) {
sl@0: 			/* Some S/MIME clients don't use the same key
sl@0: 			 * and effective key length. The key length is
sl@0: 			 * determined by the size of the decrypted RSA key.
sl@0: 			 */
sl@0: 			if(!EVP_CIPHER_CTX_set_key_length(evp_ctx, jj))
sl@0: 				{
sl@0: 				PKCS7err(PKCS7_F_PKCS7_DATADECODE,
sl@0: 					PKCS7_R_DECRYPTED_KEY_IS_WRONG_LENGTH);
sl@0: 				goto err;
sl@0: 				}
sl@0: 		} 
sl@0: 		if (EVP_CipherInit_ex(evp_ctx,NULL,NULL,tmp,NULL,0) <= 0)
sl@0: 			goto err;
sl@0: 
sl@0: 		OPENSSL_cleanse(tmp,jj);
sl@0: 
sl@0: 		if (out == NULL)
sl@0: 			out=etmp;
sl@0: 		else
sl@0: 			BIO_push(out,etmp);
sl@0: 		etmp=NULL;
sl@0: 		}
sl@0: 
sl@0: #if 1
sl@0: 	if (PKCS7_is_detached(p7) || (in_bio != NULL))
sl@0: 		{
sl@0: 		bio=in_bio;
sl@0: 		}
sl@0: 	else 
sl@0: 		{
sl@0: #if 0
sl@0: 		bio=BIO_new(BIO_s_mem());
sl@0: 		/* We need to set this so that when we have read all
sl@0: 		 * the data, the encrypt BIO, if present, will read
sl@0: 		 * EOF and encode the last few bytes */
sl@0: 		BIO_set_mem_eof_return(bio,0);
sl@0: 
sl@0: 		if (data_body->length > 0)
sl@0: 			BIO_write(bio,(char *)data_body->data,data_body->length);
sl@0: #else
sl@0: 		if (data_body->length > 0)
sl@0: 		      bio = BIO_new_mem_buf(data_body->data,data_body->length);
sl@0: 		else {
sl@0: 			bio=BIO_new(BIO_s_mem());
sl@0: 			BIO_set_mem_eof_return(bio,0);
sl@0: 		}
sl@0: 		if (bio == NULL)
sl@0: 			goto err;
sl@0: #endif
sl@0: 		}
sl@0: 	BIO_push(out,bio);
sl@0: 	bio=NULL;
sl@0: #endif
sl@0: 	if (0)
sl@0: 		{
sl@0: err:
sl@0: 		if (out != NULL) BIO_free_all(out);
sl@0: 		if (btmp != NULL) BIO_free_all(btmp);
sl@0: 		if (etmp != NULL) BIO_free_all(etmp);
sl@0: 		if (bio != NULL) BIO_free_all(bio);
sl@0: 		out=NULL;
sl@0: 		}
sl@0: 	if (tmp != NULL)
sl@0: 		OPENSSL_free(tmp);
sl@0: 	return(out);
sl@0: 	}
sl@0: 
sl@0: static BIO *PKCS7_find_digest(EVP_MD_CTX **pmd, BIO *bio, int nid)
sl@0: 	{
sl@0: 	for (;;)
sl@0: 		{
sl@0: 		bio=BIO_find_type(bio,BIO_TYPE_MD);
sl@0: 		if (bio == NULL)
sl@0: 			{
sl@0: 			PKCS7err(PKCS7_F_PKCS7_FIND_DIGEST,PKCS7_R_UNABLE_TO_FIND_MESSAGE_DIGEST);
sl@0: 			return NULL;	
sl@0: 			}
sl@0: 		BIO_get_md_ctx(bio,pmd);
sl@0: 		if (*pmd == NULL)
sl@0: 			{
sl@0: 			PKCS7err(PKCS7_F_PKCS7_FIND_DIGEST,ERR_R_INTERNAL_ERROR);
sl@0: 			return NULL;
sl@0: 			}	
sl@0: 		if (EVP_MD_CTX_type(*pmd) == nid)
sl@0: 			return bio;
sl@0: 		bio=BIO_next(bio);
sl@0: 		}
sl@0: 	return NULL;
sl@0: 	}
sl@0: 
sl@0: EXPORT_C int PKCS7_dataFinal(PKCS7 *p7, BIO *bio)
sl@0: 	{
sl@0: 	int ret=0;
sl@0: 	int i,j;
sl@0: 	BIO *btmp;
sl@0: 	BUF_MEM *buf_mem=NULL;
sl@0: 	BUF_MEM *buf=NULL;
sl@0: 	PKCS7_SIGNER_INFO *si;
sl@0: 	EVP_MD_CTX *mdc,ctx_tmp;
sl@0: 	STACK_OF(X509_ATTRIBUTE) *sk;
sl@0: 	STACK_OF(PKCS7_SIGNER_INFO) *si_sk=NULL;
sl@0: 	ASN1_OCTET_STRING *os=NULL;
sl@0: 
sl@0: 	EVP_MD_CTX_init(&ctx_tmp);
sl@0: 	i=OBJ_obj2nid(p7->type);
sl@0: 	p7->state=PKCS7_S_HEADER;
sl@0: 
sl@0: 	switch (i)
sl@0: 		{
sl@0: 	case NID_pkcs7_signedAndEnveloped:
sl@0: 		/* XXXXXXXXXXXXXXXX */
sl@0: 		si_sk=p7->d.signed_and_enveloped->signer_info;
sl@0: 		if (!(os=M_ASN1_OCTET_STRING_new()))
sl@0: 			{
sl@0: 			PKCS7err(PKCS7_F_PKCS7_DATAFINAL,ERR_R_MALLOC_FAILURE);
sl@0: 			goto err;
sl@0: 			}
sl@0: 		p7->d.signed_and_enveloped->enc_data->enc_data=os;
sl@0: 		break;
sl@0: 	case NID_pkcs7_enveloped:
sl@0: 		/* XXXXXXXXXXXXXXXX */
sl@0: 		if (!(os=M_ASN1_OCTET_STRING_new()))
sl@0: 			{
sl@0: 			PKCS7err(PKCS7_F_PKCS7_DATAFINAL,ERR_R_MALLOC_FAILURE);
sl@0: 			goto err;
sl@0: 			}
sl@0: 		p7->d.enveloped->enc_data->enc_data=os;
sl@0: 		break;
sl@0: 	case NID_pkcs7_signed:
sl@0: 		si_sk=p7->d.sign->signer_info;
sl@0: 		os=PKCS7_get_octet_string(p7->d.sign->contents);
sl@0: 		/* If detached data then the content is excluded */
sl@0: 		if(PKCS7_type_is_data(p7->d.sign->contents) && p7->detached) {
sl@0: 			M_ASN1_OCTET_STRING_free(os);
sl@0: 			p7->d.sign->contents->d.data = NULL;
sl@0: 		}
sl@0: 		break;
sl@0: 
sl@0: 	case NID_pkcs7_digest:
sl@0: 		os=PKCS7_get_octet_string(p7->d.digest->contents);
sl@0: 		/* If detached data then the content is excluded */
sl@0: 		if(PKCS7_type_is_data(p7->d.digest->contents) && p7->detached)
sl@0: 			{
sl@0: 			M_ASN1_OCTET_STRING_free(os);
sl@0: 			p7->d.digest->contents->d.data = NULL;
sl@0: 			}
sl@0: 		break;
sl@0: 
sl@0: 		}
sl@0: 
sl@0: 	if (si_sk != NULL)
sl@0: 		{
sl@0: 		if ((buf=BUF_MEM_new()) == NULL)
sl@0: 			{
sl@0: 			PKCS7err(PKCS7_F_PKCS7_DATAFINAL,ERR_R_BIO_LIB);
sl@0: 			goto err;
sl@0: 			}
sl@0: 		for (i=0; i<sk_PKCS7_SIGNER_INFO_num(si_sk); i++)
sl@0: 			{
sl@0: 			si=sk_PKCS7_SIGNER_INFO_value(si_sk,i);
sl@0: 			if (si->pkey == NULL) continue;
sl@0: 
sl@0: 			j=OBJ_obj2nid(si->digest_alg->algorithm);
sl@0: 
sl@0: 			btmp=bio;
sl@0: 
sl@0: 			btmp = PKCS7_find_digest(&mdc, btmp, j);
sl@0: 
sl@0: 			if (btmp == NULL)
sl@0: 				goto err;
sl@0: 
sl@0: 			/* We now have the EVP_MD_CTX, lets do the
sl@0: 			 * signing. */
sl@0: 			EVP_MD_CTX_copy_ex(&ctx_tmp,mdc);
sl@0: 			if (!BUF_MEM_grow_clean(buf,EVP_PKEY_size(si->pkey)))
sl@0: 				{
sl@0: 				PKCS7err(PKCS7_F_PKCS7_DATAFINAL,ERR_R_BIO_LIB);
sl@0: 				goto err;
sl@0: 				}
sl@0: 
sl@0: 			sk=si->auth_attr;
sl@0: 
sl@0: 			/* If there are attributes, we add the digest
sl@0: 			 * attribute and only sign the attributes */
sl@0: 			if ((sk != NULL) && (sk_X509_ATTRIBUTE_num(sk) != 0))
sl@0: 				{
sl@0: 				unsigned char md_data[EVP_MAX_MD_SIZE], *abuf=NULL;
sl@0: 				unsigned int md_len, alen;
sl@0: 				ASN1_OCTET_STRING *digest;
sl@0: 				ASN1_UTCTIME *sign_time;
sl@0: 				const EVP_MD *md_tmp;
sl@0: 
sl@0: 				/* Add signing time if not already present */
sl@0: 				if (!PKCS7_get_signed_attribute(si,
sl@0: 							NID_pkcs9_signingTime))
sl@0: 					{
sl@0: 					if (!(sign_time=X509_gmtime_adj(NULL,0)))
sl@0: 						{
sl@0: 						PKCS7err(PKCS7_F_PKCS7_DATAFINAL,
sl@0: 							ERR_R_MALLOC_FAILURE);
sl@0: 						goto err;
sl@0: 						}
sl@0: 					if (!PKCS7_add_signed_attribute(si,
sl@0: 						NID_pkcs9_signingTime,
sl@0: 						V_ASN1_UTCTIME,sign_time))
sl@0: 						{
sl@0: 						M_ASN1_UTCTIME_free(sign_time);
sl@0: 						goto err;
sl@0: 						}
sl@0: 					}
sl@0: 
sl@0: 				/* Add digest */
sl@0: 				md_tmp=EVP_MD_CTX_md(&ctx_tmp);
sl@0: 				EVP_DigestFinal_ex(&ctx_tmp,md_data,&md_len);
sl@0: 				if (!(digest=M_ASN1_OCTET_STRING_new()))
sl@0: 					{
sl@0: 					PKCS7err(PKCS7_F_PKCS7_DATAFINAL,
sl@0: 						ERR_R_MALLOC_FAILURE);
sl@0: 					goto err;
sl@0: 					}
sl@0: 				if (!M_ASN1_OCTET_STRING_set(digest,md_data,
sl@0: 								md_len))
sl@0: 					{
sl@0: 					PKCS7err(PKCS7_F_PKCS7_DATAFINAL,
sl@0: 						ERR_R_MALLOC_FAILURE);
sl@0: 					M_ASN1_OCTET_STRING_free(digest);
sl@0: 					goto err;
sl@0: 					}
sl@0: 				if (!PKCS7_add_signed_attribute(si,
sl@0: 					NID_pkcs9_messageDigest,
sl@0: 					V_ASN1_OCTET_STRING,digest))
sl@0: 					{
sl@0: 					M_ASN1_OCTET_STRING_free(digest);
sl@0: 					goto err;
sl@0: 					}
sl@0: 
sl@0: 				/* Now sign the attributes */
sl@0: 				EVP_SignInit_ex(&ctx_tmp,md_tmp,NULL);
sl@0: 				alen = ASN1_item_i2d((ASN1_VALUE *)sk,&abuf,
sl@0: 							ASN1_ITEM_rptr(PKCS7_ATTR_SIGN));
sl@0: 				if(!abuf) goto err;
sl@0: 				EVP_SignUpdate(&ctx_tmp,abuf,alen);
sl@0: 				OPENSSL_free(abuf);
sl@0: 				}
sl@0: 
sl@0: #ifndef OPENSSL_NO_DSA
sl@0: 			if (si->pkey->type == EVP_PKEY_DSA)
sl@0: 				ctx_tmp.digest=EVP_dss1();
sl@0: #endif
sl@0: #ifndef OPENSSL_NO_ECDSA
sl@0:  			if (si->pkey->type == EVP_PKEY_EC)
sl@0:  				ctx_tmp.digest=EVP_ecdsa();
sl@0: #endif
sl@0: 
sl@0: 			if (!EVP_SignFinal(&ctx_tmp,(unsigned char *)buf->data,
sl@0: 				(unsigned int *)&buf->length,si->pkey))
sl@0: 				{
sl@0: 				PKCS7err(PKCS7_F_PKCS7_DATAFINAL,ERR_R_EVP_LIB);
sl@0: 				goto err;
sl@0: 				}
sl@0: 			if (!ASN1_STRING_set(si->enc_digest,
sl@0: 				(unsigned char *)buf->data,buf->length))
sl@0: 				{
sl@0: 				PKCS7err(PKCS7_F_PKCS7_DATAFINAL,ERR_R_ASN1_LIB);
sl@0: 				goto err;
sl@0: 				}
sl@0: 			}
sl@0: 		}
sl@0: 	else if (i == NID_pkcs7_digest)
sl@0: 		{
sl@0: 		unsigned char md_data[EVP_MAX_MD_SIZE];
sl@0: 		unsigned int md_len;
sl@0: 		if (!PKCS7_find_digest(&mdc, bio,
sl@0: 				OBJ_obj2nid(p7->d.digest->md->algorithm)))
sl@0: 			goto err;
sl@0: 		EVP_DigestFinal_ex(mdc,md_data,&md_len);
sl@0: 		M_ASN1_OCTET_STRING_set(p7->d.digest->digest, md_data, md_len);
sl@0: 		}
sl@0: 
sl@0: 	if (!PKCS7_is_detached(p7))
sl@0: 		{
sl@0: 		btmp=BIO_find_type(bio,BIO_TYPE_MEM);
sl@0: 		if (btmp == NULL)
sl@0: 			{
sl@0: 			PKCS7err(PKCS7_F_PKCS7_DATAFINAL,PKCS7_R_UNABLE_TO_FIND_MEM_BIO);
sl@0: 			goto err;
sl@0: 			}
sl@0: 		BIO_get_mem_ptr(btmp,&buf_mem);
sl@0: 		/* Mark the BIO read only then we can use its copy of the data
sl@0: 		 * instead of making an extra copy.
sl@0: 		 */
sl@0: 		BIO_set_flags(btmp, BIO_FLAGS_MEM_RDONLY);
sl@0: 		BIO_set_mem_eof_return(btmp, 0);
sl@0: 		os->data = (unsigned char *)buf_mem->data;
sl@0: 		os->length = buf_mem->length;
sl@0: #if 0
sl@0: 		M_ASN1_OCTET_STRING_set(os,
sl@0: 			(unsigned char *)buf_mem->data,buf_mem->length);
sl@0: #endif
sl@0: 		}
sl@0: 	ret=1;
sl@0: err:
sl@0: 	EVP_MD_CTX_cleanup(&ctx_tmp);
sl@0: 	if (buf != NULL) BUF_MEM_free(buf);
sl@0: 	return(ret);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C int PKCS7_dataVerify(X509_STORE *cert_store, X509_STORE_CTX *ctx, BIO *bio,
sl@0: 	     PKCS7 *p7, PKCS7_SIGNER_INFO *si)
sl@0: 	{
sl@0: 	PKCS7_ISSUER_AND_SERIAL *ias;
sl@0: 	int ret=0,i;
sl@0: 	STACK_OF(X509) *cert;
sl@0: 	X509 *x509;
sl@0: 
sl@0: 	if (PKCS7_type_is_signed(p7))
sl@0: 		{
sl@0: 		cert=p7->d.sign->cert;
sl@0: 		}
sl@0: 	else if (PKCS7_type_is_signedAndEnveloped(p7))
sl@0: 		{
sl@0: 		cert=p7->d.signed_and_enveloped->cert;
sl@0: 		}
sl@0: 	else
sl@0: 		{
sl@0: 		PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,PKCS7_R_WRONG_PKCS7_TYPE);
sl@0: 		goto err;
sl@0: 		}
sl@0: 	/* XXXXXXXXXXXXXXXXXXXXXXX */
sl@0: 	ias=si->issuer_and_serial;
sl@0: 
sl@0: 	x509=X509_find_by_issuer_and_serial(cert,ias->issuer,ias->serial);
sl@0: 
sl@0: 	/* were we able to find the cert in passed to us */
sl@0: 	if (x509 == NULL)
sl@0: 		{
sl@0: 		PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,PKCS7_R_UNABLE_TO_FIND_CERTIFICATE);
sl@0: 		goto err;
sl@0: 		}
sl@0: 
sl@0: 	/* Lets verify */
sl@0: 	if(!X509_STORE_CTX_init(ctx,cert_store,x509,cert))
sl@0: 		{
sl@0: 		PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,ERR_R_X509_LIB);
sl@0: 		goto err;
sl@0: 		}
sl@0: 	X509_STORE_CTX_set_purpose(ctx, X509_PURPOSE_SMIME_SIGN);
sl@0: 	i=X509_verify_cert(ctx);
sl@0: 	if (i <= 0) 
sl@0: 		{
sl@0: 		PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,ERR_R_X509_LIB);
sl@0: 		X509_STORE_CTX_cleanup(ctx);
sl@0: 		goto err;
sl@0: 		}
sl@0: 	X509_STORE_CTX_cleanup(ctx);
sl@0: 
sl@0: 	return PKCS7_signatureVerify(bio, p7, si, x509);
sl@0: 	err:
sl@0: 	return ret;
sl@0: 	}
sl@0: 
sl@0: EXPORT_C int PKCS7_signatureVerify(BIO *bio, PKCS7 *p7, PKCS7_SIGNER_INFO *si,
sl@0: 								X509 *x509)
sl@0: 	{
sl@0: 	ASN1_OCTET_STRING *os;
sl@0: 	EVP_MD_CTX mdc_tmp,*mdc;
sl@0: 	int ret=0,i;
sl@0: 	int md_type;
sl@0: 	STACK_OF(X509_ATTRIBUTE) *sk;
sl@0: 	BIO *btmp;
sl@0: 	EVP_PKEY *pkey;
sl@0: 
sl@0: 	EVP_MD_CTX_init(&mdc_tmp);
sl@0: 
sl@0: 	if (!PKCS7_type_is_signed(p7) && 
sl@0: 				!PKCS7_type_is_signedAndEnveloped(p7)) {
sl@0: 		PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY,
sl@0: 						PKCS7_R_WRONG_PKCS7_TYPE);
sl@0: 		goto err;
sl@0: 	}
sl@0: 
sl@0: 	md_type=OBJ_obj2nid(si->digest_alg->algorithm);
sl@0: 
sl@0: 	btmp=bio;
sl@0: 	for (;;)
sl@0: 		{
sl@0: 		if ((btmp == NULL) ||
sl@0: 			((btmp=BIO_find_type(btmp,BIO_TYPE_MD)) == NULL))
sl@0: 			{
sl@0: 			PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY,
sl@0: 					PKCS7_R_UNABLE_TO_FIND_MESSAGE_DIGEST);
sl@0: 			goto err;
sl@0: 			}
sl@0: 		BIO_get_md_ctx(btmp,&mdc);
sl@0: 		if (mdc == NULL)
sl@0: 			{
sl@0: 			PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY,
sl@0: 							ERR_R_INTERNAL_ERROR);
sl@0: 			goto err;
sl@0: 			}
sl@0: 		if (EVP_MD_CTX_type(mdc) == md_type)
sl@0: 			break;
sl@0: 		/* Workaround for some broken clients that put the signature
sl@0: 		 * OID instead of the digest OID in digest_alg->algorithm
sl@0: 		 */
sl@0: 		if (EVP_MD_pkey_type(EVP_MD_CTX_md(mdc)) == md_type)
sl@0: 			break;
sl@0: 		btmp=BIO_next(btmp);
sl@0: 		}
sl@0: 
sl@0: 	/* mdc is the digest ctx that we want, unless there are attributes,
sl@0: 	 * in which case the digest is the signed attributes */
sl@0: 	EVP_MD_CTX_copy_ex(&mdc_tmp,mdc);
sl@0: 
sl@0: 	sk=si->auth_attr;
sl@0: 	if ((sk != NULL) && (sk_X509_ATTRIBUTE_num(sk) != 0))
sl@0: 		{
sl@0: 		unsigned char md_dat[EVP_MAX_MD_SIZE], *abuf = NULL;
sl@0:                 unsigned int md_len, alen;
sl@0: 		ASN1_OCTET_STRING *message_digest;
sl@0: 
sl@0: 		EVP_DigestFinal_ex(&mdc_tmp,md_dat,&md_len);
sl@0: 		message_digest=PKCS7_digest_from_attributes(sk);
sl@0: 		if (!message_digest)
sl@0: 			{
sl@0: 			PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY,
sl@0: 					PKCS7_R_UNABLE_TO_FIND_MESSAGE_DIGEST);
sl@0: 			goto err;
sl@0: 			}
sl@0: 		if ((message_digest->length != (int)md_len) ||
sl@0: 			(memcmp(message_digest->data,md_dat,md_len)))
sl@0: 			{
sl@0: #if 0
sl@0: {
sl@0: int ii;
sl@0: for (ii=0; ii<message_digest->length; ii++)
sl@0: 	printf("%02X",message_digest->data[ii]); printf(" sent\n");
sl@0: for (ii=0; ii<md_len; ii++) printf("%02X",md_dat[ii]); printf(" calc\n");
sl@0: }
sl@0: #endif
sl@0: 			PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY,
sl@0: 							PKCS7_R_DIGEST_FAILURE);
sl@0: 			ret= -1;
sl@0: 			goto err;
sl@0: 			}
sl@0: 
sl@0: 		EVP_VerifyInit_ex(&mdc_tmp,EVP_get_digestbynid(md_type), NULL);
sl@0: 
sl@0: 		alen = ASN1_item_i2d((ASN1_VALUE *)sk, &abuf,
sl@0: 						ASN1_ITEM_rptr(PKCS7_ATTR_VERIFY));
sl@0: 		EVP_VerifyUpdate(&mdc_tmp, abuf, alen);
sl@0: 
sl@0: 		OPENSSL_free(abuf);
sl@0: 		}
sl@0: 
sl@0: 	os=si->enc_digest;
sl@0: 	pkey = X509_get_pubkey(x509);
sl@0: 	if (!pkey)
sl@0: 		{
sl@0: 		ret = -1;
sl@0: 		goto err;
sl@0: 		}
sl@0: #ifndef OPENSSL_NO_DSA
sl@0: 	if(pkey->type == EVP_PKEY_DSA) mdc_tmp.digest=EVP_dss1();
sl@0: #endif
sl@0: #ifndef OPENSSL_NO_ECDSA
sl@0: 	if (pkey->type == EVP_PKEY_EC) mdc_tmp.digest=EVP_ecdsa();
sl@0: #endif
sl@0: 
sl@0: 	i=EVP_VerifyFinal(&mdc_tmp,os->data,os->length, pkey);
sl@0: 	EVP_PKEY_free(pkey);
sl@0: 	if (i <= 0)
sl@0: 		{
sl@0: 		PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY,
sl@0: 						PKCS7_R_SIGNATURE_FAILURE);
sl@0: 		ret= -1;
sl@0: 		goto err;
sl@0: 		}
sl@0: 	else
sl@0: 		ret=1;
sl@0: err:
sl@0: 	EVP_MD_CTX_cleanup(&mdc_tmp);
sl@0: 	return(ret);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C PKCS7_ISSUER_AND_SERIAL *PKCS7_get_issuer_and_serial(PKCS7 *p7, int idx)
sl@0: 	{
sl@0: 	STACK_OF(PKCS7_RECIP_INFO) *rsk;
sl@0: 	PKCS7_RECIP_INFO *ri;
sl@0: 	int i;
sl@0: 
sl@0: 	i=OBJ_obj2nid(p7->type);
sl@0: 	if (i != NID_pkcs7_signedAndEnveloped)
sl@0: 		return NULL;
sl@0: 	if (p7->d.signed_and_enveloped == NULL)
sl@0: 		return NULL;
sl@0: 	rsk=p7->d.signed_and_enveloped->recipientinfo;
sl@0: 	if (rsk == NULL)
sl@0: 		return NULL;
sl@0: 	ri=sk_PKCS7_RECIP_INFO_value(rsk,0);
sl@0: 	if (sk_PKCS7_RECIP_INFO_num(rsk) <= idx) return(NULL);
sl@0: 	ri=sk_PKCS7_RECIP_INFO_value(rsk,idx);
sl@0: 	return(ri->issuer_and_serial);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C ASN1_TYPE *PKCS7_get_signed_attribute(PKCS7_SIGNER_INFO *si, int nid)
sl@0: 	{
sl@0: 	return(get_attribute(si->auth_attr,nid));
sl@0: 	}
sl@0: 
sl@0: EXPORT_C ASN1_TYPE *PKCS7_get_attribute(PKCS7_SIGNER_INFO *si, int nid)
sl@0: 	{
sl@0: 	return(get_attribute(si->unauth_attr,nid));
sl@0: 	}
sl@0: 
sl@0: static ASN1_TYPE *get_attribute(STACK_OF(X509_ATTRIBUTE) *sk, int nid)
sl@0: 	{
sl@0: 	int i;
sl@0: 	X509_ATTRIBUTE *xa;
sl@0: 	ASN1_OBJECT *o;
sl@0: 
sl@0: 	o=OBJ_nid2obj(nid);
sl@0: 	if (!o || !sk) return(NULL);
sl@0: 	for (i=0; i<sk_X509_ATTRIBUTE_num(sk); i++)
sl@0: 		{
sl@0: 		xa=sk_X509_ATTRIBUTE_value(sk,i);
sl@0: 		if (OBJ_cmp(xa->object,o) == 0)
sl@0: 			{
sl@0: 			if (!xa->single && sk_ASN1_TYPE_num(xa->value.set))
sl@0: 				return(sk_ASN1_TYPE_value(xa->value.set,0));
sl@0: 			else
sl@0: 				return(NULL);
sl@0: 			}
sl@0: 		}
sl@0: 	return(NULL);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C ASN1_OCTET_STRING *PKCS7_digest_from_attributes(STACK_OF(X509_ATTRIBUTE) *sk)
sl@0: {
sl@0: 	ASN1_TYPE *astype;
sl@0: 	if(!(astype = get_attribute(sk, NID_pkcs9_messageDigest))) return NULL;
sl@0: 	return astype->value.octet_string;
sl@0: }
sl@0: 
sl@0: EXPORT_C int PKCS7_set_signed_attributes(PKCS7_SIGNER_INFO *p7si,
sl@0: 				STACK_OF(X509_ATTRIBUTE) *sk)
sl@0: 	{
sl@0: 	int i;
sl@0: 
sl@0: 	if (p7si->auth_attr != NULL)
sl@0: 		sk_X509_ATTRIBUTE_pop_free(p7si->auth_attr,X509_ATTRIBUTE_free);
sl@0: 	p7si->auth_attr=sk_X509_ATTRIBUTE_dup(sk);
sl@0: 	if (p7si->auth_attr == NULL)
sl@0: 		return 0;
sl@0: 	for (i=0; i<sk_X509_ATTRIBUTE_num(sk); i++)
sl@0: 		{
sl@0: 		if ((sk_X509_ATTRIBUTE_set(p7si->auth_attr,i,
sl@0: 			X509_ATTRIBUTE_dup(sk_X509_ATTRIBUTE_value(sk,i))))
sl@0: 		    == NULL)
sl@0: 			return(0);
sl@0: 		}
sl@0: 	return(1);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C int PKCS7_set_attributes(PKCS7_SIGNER_INFO *p7si, STACK_OF(X509_ATTRIBUTE) *sk)
sl@0: 	{
sl@0: 	int i;
sl@0: 
sl@0: 	if (p7si->unauth_attr != NULL)
sl@0: 		sk_X509_ATTRIBUTE_pop_free(p7si->unauth_attr,
sl@0: 					   X509_ATTRIBUTE_free);
sl@0: 	p7si->unauth_attr=sk_X509_ATTRIBUTE_dup(sk);
sl@0: 	if (p7si->unauth_attr == NULL)
sl@0: 		return 0;
sl@0: 	for (i=0; i<sk_X509_ATTRIBUTE_num(sk); i++)
sl@0: 		{
sl@0: 		if ((sk_X509_ATTRIBUTE_set(p7si->unauth_attr,i,
sl@0:                         X509_ATTRIBUTE_dup(sk_X509_ATTRIBUTE_value(sk,i))))
sl@0: 		    == NULL)
sl@0: 			return(0);
sl@0: 		}
sl@0: 	return(1);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C int PKCS7_add_signed_attribute(PKCS7_SIGNER_INFO *p7si, int nid, int atrtype,
sl@0: 	     void *value)
sl@0: 	{
sl@0: 	return(add_attribute(&(p7si->auth_attr),nid,atrtype,value));
sl@0: 	}
sl@0: 
sl@0: EXPORT_C int PKCS7_add_attribute(PKCS7_SIGNER_INFO *p7si, int nid, int atrtype,
sl@0: 	     void *value)
sl@0: 	{
sl@0: 	return(add_attribute(&(p7si->unauth_attr),nid,atrtype,value));
sl@0: 	}
sl@0: 
sl@0: static int add_attribute(STACK_OF(X509_ATTRIBUTE) **sk, int nid, int atrtype,
sl@0: 			 void *value)
sl@0: 	{
sl@0: 	X509_ATTRIBUTE *attr=NULL;
sl@0: 
sl@0: 	if (*sk == NULL)
sl@0: 		{
sl@0: 		if (!(*sk = sk_X509_ATTRIBUTE_new_null()))
sl@0: 			return 0;
sl@0: new_attrib:
sl@0: 		if (!(attr=X509_ATTRIBUTE_create(nid,atrtype,value)))
sl@0: 			return 0;
sl@0: 		if (!sk_X509_ATTRIBUTE_push(*sk,attr))
sl@0: 			{
sl@0: 			X509_ATTRIBUTE_free(attr);
sl@0: 			return 0;
sl@0: 			}
sl@0: 		}
sl@0: 	else
sl@0: 		{
sl@0: 		int i;
sl@0: 
sl@0: 		for (i=0; i<sk_X509_ATTRIBUTE_num(*sk); i++)
sl@0: 			{
sl@0: 			attr=sk_X509_ATTRIBUTE_value(*sk,i);
sl@0: 			if (OBJ_obj2nid(attr->object) == nid)
sl@0: 				{
sl@0: 				X509_ATTRIBUTE_free(attr);
sl@0: 				attr=X509_ATTRIBUTE_create(nid,atrtype,value);
sl@0: 				if (attr == NULL)
sl@0: 					return 0;
sl@0: 				if (!sk_X509_ATTRIBUTE_set(*sk,i,attr))
sl@0: 					{
sl@0: 					X509_ATTRIBUTE_free(attr);
sl@0: 					return 0;
sl@0: 					}
sl@0: 				goto end;
sl@0: 				}
sl@0: 			}
sl@0: 		goto new_attrib;
sl@0: 		}
sl@0: end:
sl@0: 	return(1);
sl@0: 	}
sl@0: