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/* p5_pbe.c */
/* Written by Dr Stephen N Henson (shenson@bigfoot.com) 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/asn1_mac.h>
#include <openssl/x509.h>
#include <openssl/rand.h>
/* PKCS#5 password based encryption structure */
int i2d_PBEPARAM(PBEPARAM *a, unsigned char **pp)
{
M_ASN1_I2D_vars(a);
M_ASN1_I2D_len (a->salt, i2d_ASN1_OCTET_STRING);
M_ASN1_I2D_len (a->iter, i2d_ASN1_INTEGER);
M_ASN1_I2D_seq_total ();
M_ASN1_I2D_put (a->salt, i2d_ASN1_OCTET_STRING);
M_ASN1_I2D_put (a->iter, i2d_ASN1_INTEGER);
M_ASN1_I2D_finish();
}
PBEPARAM *PBEPARAM_new(void)
{
PBEPARAM *ret=NULL;
ASN1_CTX c;
M_ASN1_New_Malloc(ret, PBEPARAM);
M_ASN1_New(ret->iter,M_ASN1_INTEGER_new);
M_ASN1_New(ret->salt,M_ASN1_OCTET_STRING_new);
return (ret);
M_ASN1_New_Error(ASN1_F_PBEPARAM_NEW);
}
PBEPARAM *d2i_PBEPARAM(PBEPARAM **a, unsigned char **pp, long length)
{
M_ASN1_D2I_vars(a,PBEPARAM *,PBEPARAM_new);
M_ASN1_D2I_Init();
M_ASN1_D2I_start_sequence();
M_ASN1_D2I_get (ret->salt, d2i_ASN1_OCTET_STRING);
M_ASN1_D2I_get (ret->iter, d2i_ASN1_INTEGER);
M_ASN1_D2I_Finish(a, PBEPARAM_free, ASN1_F_D2I_PBEPARAM);
}
void PBEPARAM_free (PBEPARAM *a)
{
if(a==NULL) return;
M_ASN1_OCTET_STRING_free(a->salt);
M_ASN1_INTEGER_free (a->iter);
Free (a);
}
/* Return an algorithm identifier for a PKCS#5 PBE algorithm */
X509_ALGOR *PKCS5_pbe_set(int alg, int iter, unsigned char *salt,
int saltlen)
{
PBEPARAM *pbe;
ASN1_OBJECT *al;
X509_ALGOR *algor;
ASN1_TYPE *astype;
if (!(pbe = PBEPARAM_new ())) {
ASN1err(ASN1_F_ASN1_PBE_SET,ERR_R_MALLOC_FAILURE);
return NULL;
}
if(iter <= 0) iter = PKCS5_DEFAULT_ITER;
ASN1_INTEGER_set (pbe->iter, iter);
if (!saltlen) saltlen = PKCS5_SALT_LEN;
if (!(pbe->salt->data = Malloc (saltlen))) {
ASN1err(ASN1_F_ASN1_PBE_SET,ERR_R_MALLOC_FAILURE);
return NULL;
}
pbe->salt->length = saltlen;
if (salt) memcpy (pbe->salt->data, salt, saltlen);
else if (RAND_bytes (pbe->salt->data, saltlen) <= 0)
return NULL;
if (!(astype = ASN1_TYPE_new())) {
ASN1err(ASN1_F_ASN1_PBE_SET,ERR_R_MALLOC_FAILURE);
return NULL;
}
astype->type = V_ASN1_SEQUENCE;
if(!ASN1_pack_string(pbe, i2d_PBEPARAM, &astype->value.sequence)) {
ASN1err(ASN1_F_ASN1_PBE_SET,ERR_R_MALLOC_FAILURE);
return NULL;
}
PBEPARAM_free (pbe);
al = OBJ_nid2obj(alg); /* never need to free al */
if (!(algor = X509_ALGOR_new())) {
ASN1err(ASN1_F_ASN1_PBE_SET,ERR_R_MALLOC_FAILURE);
return NULL;
}
ASN1_OBJECT_free(algor->algorithm);
algor->algorithm = al;
algor->parameter = astype;
return (algor);
}
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