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/* p5_pbe.c */
/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
* project 1999.
*/
/* ====================================================================
* Copyright (c) 1999 The OpenSSL Project. All rights reserved.
*
* 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 above 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 acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
*
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For written permission, please contact
* licensing@OpenSSL.org.
*
* 5. Products derived from this software may not be called "OpenSSL"
* nor may "OpenSSL" appear in their names without prior written
* permission of the OpenSSL Project.
*
* 6. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
*
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
* EXPRESSED 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 OpenSSL PROJECT OR
* ITS 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.
* ====================================================================
*
* This product includes cryptographic software written by Eric Young
* (eay@cryptsoft.com). This product includes software written by Tim
* Hudson (tjh@cryptsoft.com).
*
*/
#include <stdio.h>
#include "cryptlib.h"
#include <openssl/asn1t.h>
#include <openssl/x509.h>
#include <openssl/rand.h>
/* PKCS#5 password based encryption structure */
ASN1_SEQUENCE(PBEPARAM) = {
ASN1_SIMPLE(PBEPARAM, salt, ASN1_OCTET_STRING),
ASN1_SIMPLE(PBEPARAM, iter, ASN1_INTEGER)
} ASN1_SEQUENCE_END(PBEPARAM)
IMPLEMENT_ASN1_FUNCTIONS(PBEPARAM)
/* Set an algorithm identifier for a PKCS#5 PBE algorithm */
int PKCS5_pbe_set0_algor(X509_ALGOR *algor, int alg, int iter,
const unsigned char *salt, int saltlen)
{
PBEPARAM *pbe=NULL;
ASN1_STRING *pbe_str=NULL;
unsigned char *sstr;
pbe = PBEPARAM_new();
if (!pbe)
{
ASN1err(ASN1_F_PKCS5_PBE_SET0_ALGOR,ERR_R_MALLOC_FAILURE);
goto err;
}
if(iter <= 0)
iter = PKCS5_DEFAULT_ITER;
if (!ASN1_INTEGER_set(pbe->iter, iter))
{
ASN1err(ASN1_F_PKCS5_PBE_SET0_ALGOR,ERR_R_MALLOC_FAILURE);
goto err;
}
if (!saltlen)
saltlen = PKCS5_SALT_LEN;
if (!ASN1_STRING_set(pbe->salt, NULL, saltlen))
{
ASN1err(ASN1_F_PKCS5_PBE_SET0_ALGOR,ERR_R_MALLOC_FAILURE);
goto err;
}
sstr = ASN1_STRING_data(pbe->salt);
if (salt)
memcpy(sstr, salt, saltlen);
else if (RAND_pseudo_bytes(sstr, saltlen) < 0)
goto err;
if(!ASN1_item_pack(pbe, ASN1_ITEM_rptr(PBEPARAM), &pbe_str))
{
ASN1err(ASN1_F_PKCS5_PBE_SET0_ALGOR,ERR_R_MALLOC_FAILURE);
goto err;
}
PBEPARAM_free(pbe);
pbe = NULL;
if (X509_ALGOR_set0(algor, OBJ_nid2obj(alg), V_ASN1_SEQUENCE, pbe_str))
return 1;
err:
if (pbe != NULL)
PBEPARAM_free(pbe);
if (pbe_str != NULL)
ASN1_STRING_free(pbe_str);
return 0;
}
/* Return an algorithm identifier for a PKCS#5 PBE algorithm */
X509_ALGOR *PKCS5_pbe_set(int alg, int iter,
const unsigned char *salt, int saltlen)
{
X509_ALGOR *ret;
ret = X509_ALGOR_new();
if (!ret)
{
ASN1err(ASN1_F_PKCS5_PBE_SET,ERR_R_MALLOC_FAILURE);
return NULL;
}
if (PKCS5_pbe_set0_algor(ret, alg, iter, salt, saltlen))
return ret;
X509_ALGOR_free(ret);
return NULL;
}