sl@0: /* p5_pbe.c */
sl@0: /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
sl@0:  * project 1999.
sl@0:  */
sl@0: /* ====================================================================
sl@0:  * Copyright (c) 1999 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: #include <stdio.h>
sl@0: #include "cryptlib.h"
sl@0: #include <openssl/asn1t.h>
sl@0: #include <openssl/x509.h>
sl@0: #include <openssl/rand.h>
sl@0: 
sl@0: /* PKCS#5 password based encryption structure */
sl@0: 
sl@0: ASN1_SEQUENCE(PBEPARAM) = {
sl@0: 	ASN1_SIMPLE(PBEPARAM, salt, ASN1_OCTET_STRING),
sl@0: 	ASN1_SIMPLE(PBEPARAM, iter, ASN1_INTEGER)
sl@0: } ASN1_SEQUENCE_END(PBEPARAM)
sl@0: 
sl@0: IMPLEMENT_ASN1_FUNCTIONS(PBEPARAM)
sl@0: 
sl@0: /* Return an algorithm identifier for a PKCS#5 PBE algorithm */
sl@0: 
sl@0: EXPORT_C X509_ALGOR *PKCS5_pbe_set(int alg, int iter, unsigned char *salt,
sl@0: 	     int saltlen)
sl@0: {
sl@0: 	PBEPARAM *pbe=NULL;
sl@0: 	ASN1_OBJECT *al;
sl@0: 	X509_ALGOR *algor;
sl@0: 	ASN1_TYPE *astype=NULL;
sl@0: 
sl@0: 	if (!(pbe = PBEPARAM_new ())) {
sl@0: 		ASN1err(ASN1_F_PKCS5_PBE_SET,ERR_R_MALLOC_FAILURE);
sl@0: 		goto err;
sl@0: 	}
sl@0: 	if(iter <= 0) iter = PKCS5_DEFAULT_ITER;
sl@0: 	if (!ASN1_INTEGER_set(pbe->iter, iter)) {
sl@0: 		ASN1err(ASN1_F_PKCS5_PBE_SET,ERR_R_MALLOC_FAILURE);
sl@0: 		goto err;
sl@0: 	}
sl@0: 	if (!saltlen) saltlen = PKCS5_SALT_LEN;
sl@0: 	if (!(pbe->salt->data = OPENSSL_malloc (saltlen))) {
sl@0: 		ASN1err(ASN1_F_PKCS5_PBE_SET,ERR_R_MALLOC_FAILURE);
sl@0: 		goto err;
sl@0: 	}
sl@0: 	pbe->salt->length = saltlen;
sl@0: 	if (salt) memcpy (pbe->salt->data, salt, saltlen);
sl@0: 	else if (RAND_pseudo_bytes (pbe->salt->data, saltlen) < 0)
sl@0: 		goto err;
sl@0: 
sl@0: 	if (!(astype = ASN1_TYPE_new())) {
sl@0: 		ASN1err(ASN1_F_PKCS5_PBE_SET,ERR_R_MALLOC_FAILURE);
sl@0: 		goto err;
sl@0: 	}
sl@0: 
sl@0: 	astype->type = V_ASN1_SEQUENCE;
sl@0: 	if(!ASN1_pack_string_of(PBEPARAM, pbe, i2d_PBEPARAM,
sl@0: 				&astype->value.sequence)) {
sl@0: 		ASN1err(ASN1_F_PKCS5_PBE_SET,ERR_R_MALLOC_FAILURE);
sl@0: 		goto err;
sl@0: 	}
sl@0: 	PBEPARAM_free (pbe);
sl@0: 	pbe = NULL;
sl@0: 	
sl@0: 	al = OBJ_nid2obj(alg); /* never need to free al */
sl@0: 	if (!(algor = X509_ALGOR_new())) {
sl@0: 		ASN1err(ASN1_F_PKCS5_PBE_SET,ERR_R_MALLOC_FAILURE);
sl@0: 		goto err;
sl@0: 	}
sl@0: 	ASN1_OBJECT_free(algor->algorithm);
sl@0: 	algor->algorithm = al;
sl@0: 	algor->parameter = astype;
sl@0: 
sl@0: 	return (algor);
sl@0: err:
sl@0: 	if (pbe != NULL) PBEPARAM_free(pbe);
sl@0: 	if (astype != NULL) ASN1_TYPE_free(astype);
sl@0: 	return NULL;
sl@0: }