155714Skris/* p12_mutl.c */ 2194206Ssimon/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL 355714Skris * project 1999. 455714Skris */ 555714Skris/* ==================================================================== 655714Skris * Copyright (c) 1999 The OpenSSL Project. All rights reserved. 755714Skris * 855714Skris * Redistribution and use in source and binary forms, with or without 955714Skris * modification, are permitted provided that the following conditions 1055714Skris * are met: 1155714Skris * 1255714Skris * 1. Redistributions of source code must retain the above copyright 1355714Skris * notice, this list of conditions and the following disclaimer. 1455714Skris * 1555714Skris * 2. Redistributions in binary form must reproduce the above copyright 1655714Skris * notice, this list of conditions and the following disclaimer in 1755714Skris * the documentation and/or other materials provided with the 1855714Skris * distribution. 1955714Skris * 2055714Skris * 3. All advertising materials mentioning features or use of this 2155714Skris * software must display the following acknowledgment: 2255714Skris * "This product includes software developed by the OpenSSL Project 2355714Skris * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" 2455714Skris * 2555714Skris * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 2655714Skris * endorse or promote products derived from this software without 2755714Skris * prior written permission. For written permission, please contact 2855714Skris * licensing@OpenSSL.org. 2955714Skris * 3055714Skris * 5. Products derived from this software may not be called "OpenSSL" 3155714Skris * nor may "OpenSSL" appear in their names without prior written 3255714Skris * permission of the OpenSSL Project. 3355714Skris * 3455714Skris * 6. Redistributions of any form whatsoever must retain the following 3555714Skris * acknowledgment: 3655714Skris * "This product includes software developed by the OpenSSL Project 3755714Skris * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" 3855714Skris * 3955714Skris * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 4055714Skris * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 4155714Skris * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 4255714Skris * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 4355714Skris * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 4455714Skris * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 4555714Skris * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 4655714Skris * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 4755714Skris * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 4855714Skris * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 4955714Skris * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 5055714Skris * OF THE POSSIBILITY OF SUCH DAMAGE. 5155714Skris * ==================================================================== 5255714Skris * 5355714Skris * This product includes cryptographic software written by Eric Young 5455714Skris * (eay@cryptsoft.com). This product includes software written by Tim 5555714Skris * Hudson (tjh@cryptsoft.com). 5655714Skris * 5755714Skris */ 5855714Skris 59109998Smarkm#ifndef OPENSSL_NO_HMAC 6055714Skris#include <stdio.h> 6155714Skris#include "cryptlib.h" 6255714Skris#include <openssl/hmac.h> 6355714Skris#include <openssl/rand.h> 6455714Skris#include <openssl/pkcs12.h> 6555714Skris 6655714Skris/* Generate a MAC */ 67160814Ssimonint PKCS12_gen_mac(PKCS12 *p12, const char *pass, int passlen, 68160814Ssimon unsigned char *mac, unsigned int *maclen) 6955714Skris{ 7055714Skris const EVP_MD *md_type; 7155714Skris HMAC_CTX hmac; 72162911Ssimon unsigned char key[EVP_MAX_MD_SIZE], *salt; 7355714Skris int saltlen, iter; 74238405Sjkim int md_size; 75109998Smarkm 76160814Ssimon if (!PKCS7_type_is_data(p12->authsafes)) 77160814Ssimon { 78160814Ssimon PKCS12err(PKCS12_F_PKCS12_GEN_MAC,PKCS12_R_CONTENT_TYPE_NOT_DATA); 79160814Ssimon return 0; 80160814Ssimon } 81160814Ssimon 8255714Skris salt = p12->mac->salt->data; 8355714Skris saltlen = p12->mac->salt->length; 8455714Skris if (!p12->mac->iter) iter = 1; 8555714Skris else iter = ASN1_INTEGER_get (p12->mac->iter); 8655714Skris if(!(md_type = 8755714Skris EVP_get_digestbyobj (p12->mac->dinfo->algor->algorithm))) { 8855714Skris PKCS12err(PKCS12_F_PKCS12_GEN_MAC,PKCS12_R_UNKNOWN_DIGEST_ALGORITHM); 8955714Skris return 0; 9055714Skris } 91238405Sjkim md_size = EVP_MD_size(md_type); 92238405Sjkim if (md_size < 0) 93238405Sjkim return 0; 9455714Skris if(!PKCS12_key_gen (pass, passlen, salt, saltlen, PKCS12_MAC_ID, iter, 95238405Sjkim md_size, key, md_type)) { 9655714Skris PKCS12err(PKCS12_F_PKCS12_GEN_MAC,PKCS12_R_KEY_GEN_ERROR); 9755714Skris return 0; 9855714Skris } 99109998Smarkm HMAC_CTX_init(&hmac); 100238405Sjkim if (!HMAC_Init_ex(&hmac, key, md_size, md_type, NULL) 101238405Sjkim || !HMAC_Update(&hmac, p12->authsafes->d.data->data, 102238405Sjkim p12->authsafes->d.data->length) 103238405Sjkim || !HMAC_Final(&hmac, mac, maclen)) 104238405Sjkim { 105238405Sjkim HMAC_CTX_cleanup(&hmac); 106238405Sjkim return 0; 107238405Sjkim } 108109998Smarkm HMAC_CTX_cleanup(&hmac); 10955714Skris return 1; 11055714Skris} 11155714Skris 11255714Skris/* Verify the mac */ 113160814Ssimonint PKCS12_verify_mac(PKCS12 *p12, const char *pass, int passlen) 11455714Skris{ 11555714Skris unsigned char mac[EVP_MAX_MD_SIZE]; 11655714Skris unsigned int maclen; 11755714Skris if(p12->mac == NULL) { 118160814Ssimon PKCS12err(PKCS12_F_PKCS12_VERIFY_MAC,PKCS12_R_MAC_ABSENT); 11955714Skris return 0; 12055714Skris } 12155714Skris if (!PKCS12_gen_mac (p12, pass, passlen, mac, &maclen)) { 122160814Ssimon PKCS12err(PKCS12_F_PKCS12_VERIFY_MAC,PKCS12_R_MAC_GENERATION_ERROR); 12355714Skris return 0; 12455714Skris } 12555714Skris if ((maclen != (unsigned int)p12->mac->dinfo->digest->length) 12668651Skris || memcmp (mac, p12->mac->dinfo->digest->data, maclen)) return 0; 12755714Skris return 1; 12855714Skris} 12955714Skris 13055714Skris/* Set a mac */ 13155714Skris 132160814Ssimonint PKCS12_set_mac(PKCS12 *p12, const char *pass, int passlen, 133109998Smarkm unsigned char *salt, int saltlen, int iter, const EVP_MD *md_type) 13455714Skris{ 13555714Skris unsigned char mac[EVP_MAX_MD_SIZE]; 13655714Skris unsigned int maclen; 13755714Skris 13855714Skris if (!md_type) md_type = EVP_sha1(); 13955714Skris if (PKCS12_setup_mac (p12, iter, salt, saltlen, md_type) == 14055714Skris PKCS12_ERROR) { 14155714Skris PKCS12err(PKCS12_F_PKCS12_SET_MAC,PKCS12_R_MAC_SETUP_ERROR); 14255714Skris return 0; 14355714Skris } 14455714Skris if (!PKCS12_gen_mac (p12, pass, passlen, mac, &maclen)) { 14555714Skris PKCS12err(PKCS12_F_PKCS12_SET_MAC,PKCS12_R_MAC_GENERATION_ERROR); 14655714Skris return 0; 14755714Skris } 14859191Skris if (!(M_ASN1_OCTET_STRING_set (p12->mac->dinfo->digest, mac, maclen))) { 14955714Skris PKCS12err(PKCS12_F_PKCS12_SET_MAC,PKCS12_R_MAC_STRING_SET_ERROR); 15055714Skris return 0; 15155714Skris } 15255714Skris return 1; 15355714Skris} 15455714Skris 15555714Skris/* Set up a mac structure */ 156160814Ssimonint PKCS12_setup_mac(PKCS12 *p12, int iter, unsigned char *salt, int saltlen, 157109998Smarkm const EVP_MD *md_type) 15855714Skris{ 15959191Skris if (!(p12->mac = PKCS12_MAC_DATA_new())) return PKCS12_ERROR; 16055714Skris if (iter > 1) { 16159191Skris if(!(p12->mac->iter = M_ASN1_INTEGER_new())) { 16255714Skris PKCS12err(PKCS12_F_PKCS12_SETUP_MAC, ERR_R_MALLOC_FAILURE); 16355714Skris return 0; 16455714Skris } 165160814Ssimon if (!ASN1_INTEGER_set(p12->mac->iter, iter)) { 166160814Ssimon PKCS12err(PKCS12_F_PKCS12_SETUP_MAC, ERR_R_MALLOC_FAILURE); 167160814Ssimon return 0; 168160814Ssimon } 16955714Skris } 17055714Skris if (!saltlen) saltlen = PKCS12_SALT_LEN; 17155714Skris p12->mac->salt->length = saltlen; 17268651Skris if (!(p12->mac->salt->data = OPENSSL_malloc (saltlen))) { 17355714Skris PKCS12err(PKCS12_F_PKCS12_SETUP_MAC, ERR_R_MALLOC_FAILURE); 17455714Skris return 0; 17555714Skris } 17659191Skris if (!salt) { 17759191Skris if (RAND_pseudo_bytes (p12->mac->salt->data, saltlen) < 0) 17859191Skris return 0; 17959191Skris } 18055714Skris else memcpy (p12->mac->salt->data, salt, saltlen); 18155714Skris p12->mac->dinfo->algor->algorithm = OBJ_nid2obj(EVP_MD_type(md_type)); 18255714Skris if (!(p12->mac->dinfo->algor->parameter = ASN1_TYPE_new())) { 18355714Skris PKCS12err(PKCS12_F_PKCS12_SETUP_MAC, ERR_R_MALLOC_FAILURE); 18455714Skris return 0; 18555714Skris } 18655714Skris p12->mac->dinfo->algor->parameter->type = V_ASN1_NULL; 18755714Skris 18855714Skris return 1; 18955714Skris} 19055714Skris#endif 191