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/* p5_pbe.c */
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/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
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* project 1999.
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*/
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/* ====================================================================
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* Copyright (c) 1999 The OpenSSL Project. All rights reserved.
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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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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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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
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. All advertising materials mentioning features or use of this
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* software must display the following acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
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*
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* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
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* endorse or promote products derived from this software without
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* prior written permission. For written permission, please contact
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* licensing@OpenSSL.org.
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*
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* 5. Products derived from this software may not be called "OpenSSL"
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* nor may "OpenSSL" appear in their names without prior written
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* permission of the OpenSSL Project.
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*
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* 6. Redistributions of any form whatsoever must retain the following
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* acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
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*
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* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
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* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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* ====================================================================
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*
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* This product includes cryptographic software written by Eric Young
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* (eay@cryptsoft.com). This product includes software written by Tim
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* Hudson (tjh@cryptsoft.com).
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*
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*/
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#include <stdio.h>
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#include "cryptlib.h"
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#include <openssl/asn1t.h>
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#include <openssl/x509.h>
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#include <openssl/rand.h>
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/* PKCS#5 password based encryption structure */
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ASN1_SEQUENCE(PBEPARAM) = {
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ASN1_SIMPLE(PBEPARAM, salt, ASN1_OCTET_STRING),
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ASN1_SIMPLE(PBEPARAM, iter, ASN1_INTEGER)
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} ASN1_SEQUENCE_END(PBEPARAM)
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IMPLEMENT_ASN1_FUNCTIONS(PBEPARAM)
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/* Return an algorithm identifier for a PKCS#5 PBE algorithm */
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EXPORT_C X509_ALGOR *PKCS5_pbe_set(int alg, int iter, unsigned char *salt,
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int saltlen)
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{
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PBEPARAM *pbe=NULL;
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ASN1_OBJECT *al;
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X509_ALGOR *algor;
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ASN1_TYPE *astype=NULL;
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if (!(pbe = PBEPARAM_new ())) {
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ASN1err(ASN1_F_PKCS5_PBE_SET,ERR_R_MALLOC_FAILURE);
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goto err;
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}
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if(iter <= 0) iter = PKCS5_DEFAULT_ITER;
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if (!ASN1_INTEGER_set(pbe->iter, iter)) {
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ASN1err(ASN1_F_PKCS5_PBE_SET,ERR_R_MALLOC_FAILURE);
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goto err;
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}
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if (!saltlen) saltlen = PKCS5_SALT_LEN;
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if (!(pbe->salt->data = OPENSSL_malloc (saltlen))) {
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ASN1err(ASN1_F_PKCS5_PBE_SET,ERR_R_MALLOC_FAILURE);
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goto err;
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}
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pbe->salt->length = saltlen;
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if (salt) memcpy (pbe->salt->data, salt, saltlen);
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else if (RAND_pseudo_bytes (pbe->salt->data, saltlen) < 0)
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goto err;
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if (!(astype = ASN1_TYPE_new())) {
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ASN1err(ASN1_F_PKCS5_PBE_SET,ERR_R_MALLOC_FAILURE);
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goto err;
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}
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astype->type = V_ASN1_SEQUENCE;
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if(!ASN1_pack_string_of(PBEPARAM, pbe, i2d_PBEPARAM,
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&astype->value.sequence)) {
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ASN1err(ASN1_F_PKCS5_PBE_SET,ERR_R_MALLOC_FAILURE);
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goto err;
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}
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PBEPARAM_free (pbe);
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pbe = NULL;
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al = OBJ_nid2obj(alg); /* never need to free al */
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if (!(algor = X509_ALGOR_new())) {
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ASN1err(ASN1_F_PKCS5_PBE_SET,ERR_R_MALLOC_FAILURE);
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goto err;
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}
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ASN1_OBJECT_free(algor->algorithm);
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algor->algorithm = al;
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algor->parameter = astype;
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return (algor);
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err:
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if (pbe != NULL) PBEPARAM_free(pbe);
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if (astype != NULL) ASN1_TYPE_free(astype);
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return NULL;
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}
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