/* 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/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)/* 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=NULL;	ASN1_OBJECT *al;	X509_ALGOR *algor;	ASN1_TYPE *astype=NULL;	if (!(pbe = PBEPARAM_new ())) {		ASN1err(ASN1_F_ASN1_PBE_SET,ERR_R_MALLOC_FAILURE);		goto err;	}	if(iter <= 0) iter = PKCS5_DEFAULT_ITER;	if (!ASN1_INTEGER_set(pbe->iter, iter)) {		ASN1err(ASN1_F_ASN1_PBE_SET,ERR_R_MALLOC_FAILURE);		goto err;	}	if (!saltlen) saltlen = PKCS5_SALT_LEN;	if (!(pbe->salt->data = OPENSSL_malloc (saltlen))) {		ASN1err(ASN1_F_ASN1_PBE_SET,ERR_R_MALLOC_FAILURE);		goto err;	}	pbe->salt->length = saltlen;	if (salt) memcpy (pbe->salt->data, salt, saltlen);	else if (RAND_pseudo_bytes (pbe->salt->data, saltlen) < 0)		goto err;	if (!(astype = ASN1_TYPE_new())) {		ASN1err(ASN1_F_ASN1_PBE_SET,ERR_R_MALLOC_FAILURE);		goto err;	}	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);		goto err;	}	PBEPARAM_free (pbe);	pbe = NULL;		al = OBJ_nid2obj(alg); /* never need to free al */	if (!(algor = X509_ALGOR_new())) {		ASN1err(ASN1_F_ASN1_PBE_SET,ERR_R_MALLOC_FAILURE);		goto err;	}	ASN1_OBJECT_free(algor->algorithm);	algor->algorithm = al;	algor->parameter = astype;	return (algor);err:	if (pbe != NULL) PBEPARAM_free(pbe);	if (astype != NULL) ASN1_TYPE_free(astype);	return NULL;}