p12_mutl.c
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- /* 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_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