/* p12_mutl.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). * */#ifndef OPENSSL_NO_HMAC#include <stdio.h>#include "cryptlib.h"#include <openssl/hmac.h>#include <openssl/rand.h>#include <openssl/pkcs12.h>/* Generate a MAC */int PKCS12_gen_mac (PKCS12 *p12, const char *pass, int passlen,		    unsigned char *mac, unsigned int *maclen){	const EVP_MD *md_type;	HMAC_CTX hmac;	unsigned char key[PKCS12_MAC_KEY_LENGTH], *salt;	int saltlen, iter;	if (!PKCS7_type_is_data(p12->authsafes))		{		PKCS12err(PKCS12_F_PKCS12_GEN_MAC,PKCS12_R_CONTENT_TYPE_NOT_DATA);		return 0;		}	salt = p12->mac->salt->data;	saltlen = p12->mac->salt->length;	if (!p12->mac->iter) iter = 1;	else iter = ASN1_INTEGER_get (p12->mac->iter);    	if(!(md_type =		 EVP_get_digestbyobj (p12->mac->dinfo->algor->algorithm))) {		PKCS12err(PKCS12_F_PKCS12_GEN_MAC,PKCS12_R_UNKNOWN_DIGEST_ALGORITHM);		return 0;	}	if(!PKCS12_key_gen (pass, passlen, salt, saltlen, PKCS12_MAC_ID, iter,				 PKCS12_MAC_KEY_LENGTH, key, md_type)) {		PKCS12err(PKCS12_F_PKCS12_GEN_MAC,PKCS12_R_KEY_GEN_ERROR);		return 0;	}	HMAC_CTX_init(&hmac);	HMAC_Init_ex(&hmac, key, PKCS12_MAC_KEY_LENGTH, md_type, NULL);    	HMAC_Update(&hmac, p12->authsafes->d.data->data,					 p12->authsafes->d.data->length);    	HMAC_Final(&hmac, mac, maclen);    	HMAC_CTX_cleanup(&hmac);	return 1;}/* Verify the mac */int PKCS12_verify_mac (PKCS12 *p12, const char *pass, int passlen){	unsigned char mac[EVP_MAX_MD_SIZE];	unsigned int maclen;	if(p12->mac == NULL) {		PKCS12err(PKCS12_F_VERIFY_MAC,PKCS12_R_MAC_ABSENT);		return 0;	}	if (!PKCS12_gen_mac (p12, pass, passlen, mac, &maclen)) {		PKCS12err(PKCS12_F_VERIFY_MAC,PKCS12_R_MAC_GENERATION_ERROR);		return 0;	}	if ((maclen != (unsigned int)p12->mac->dinfo->digest->length)	|| memcmp (mac, p12->mac->dinfo->digest->data, maclen)) return 0;	return 1;}/* Set a mac */int PKCS12_set_mac (PKCS12 *p12, const char *pass, int passlen,	     unsigned char *salt, int saltlen, int iter, const EVP_MD *md_type){	unsigned char mac[EVP_MAX_MD_SIZE];	unsigned int maclen;	if (!md_type) md_type = EVP_sha1();	if (PKCS12_setup_mac (p12, iter, salt, saltlen, md_type) ==				 	PKCS12_ERROR) {		PKCS12err(PKCS12_F_PKCS12_SET_MAC,PKCS12_R_MAC_SETUP_ERROR);		return 0;	}	if (!PKCS12_gen_mac (p12, pass, passlen, mac, &maclen)) {		PKCS12err(PKCS12_F_PKCS12_SET_MAC,PKCS12_R_MAC_GENERATION_ERROR);		return 0;	}	if (!(M_ASN1_OCTET_STRING_set (p12->mac->dinfo->digest, mac, maclen))) {		PKCS12err(PKCS12_F_PKCS12_SET_MAC,PKCS12_R_MAC_STRING_SET_ERROR);						return 0;	}	return 1;}/* Set up a mac structure */int PKCS12_setup_mac (PKCS12 *p12, int iter, unsigned char *salt, int saltlen,	     const EVP_MD *md_type){	if (!(p12->mac = PKCS12_MAC_DATA_new())) return PKCS12_ERROR;	if (iter > 1) {		if(!(p12->mac->iter = M_ASN1_INTEGER_new())) {			PKCS12err(PKCS12_F_PKCS12_SETUP_MAC, ERR_R_MALLOC_FAILURE);			return 0;		}		if (!ASN1_INTEGER_set(p12->mac->iter, iter)) {			PKCS12err(PKCS12_F_PKCS12_SETUP_MAC, ERR_R_MALLOC_FAILURE);			return 0;		}	}	if (!saltlen) saltlen = PKCS12_SALT_LEN;	p12->mac->salt->length = saltlen;	if (!(p12->mac->salt->data = OPENSSL_malloc (saltlen))) {		PKCS12err(PKCS12_F_PKCS12_SETUP_MAC, ERR_R_MALLOC_FAILURE);		return 0;	}	if (!salt) {		if (RAND_pseudo_bytes (p12->mac->salt->data, saltlen) < 0)			return 0;	}	else memcpy (p12->mac->salt->data, salt, saltlen);	p12->mac->dinfo->algor->algorithm = OBJ_nid2obj(EVP_MD_type(md_type));	if (!(p12->mac->dinfo->algor->parameter = ASN1_TYPE_new())) {		PKCS12err(PKCS12_F_PKCS12_SETUP_MAC, ERR_R_MALLOC_FAILURE);		return 0;	}	p12->mac->dinfo->algor->parameter->type = V_ASN1_NULL;		return 1;}#endif