ref: 5ebb1a29d8250027e8b7f2287f3bfa3a6f3d13ac
dir: /sys/src/ape/lib/openssl/crypto/pkcs12/p12_mutl.c/
/* p12_mutl.c */
/* Written by Dr Stephen N Henson ([email protected]) 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
* [email protected].
*
* 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
* ([email protected]). This product includes software written by Tim
* Hudson ([email protected]).
*
*/
#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[EVP_MAX_MD_SIZE], *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,
EVP_MD_size(md_type), 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, EVP_MD_size(md_type), 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_PKCS12_VERIFY_MAC,PKCS12_R_MAC_ABSENT);
return 0;
}
if (!PKCS12_gen_mac (p12, pass, passlen, mac, &maclen)) {
PKCS12err(PKCS12_F_PKCS12_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