/* $OpenBSD: p12_mutl.c,v 1.16 2014/07/10 22:45:57 jsing Exp $ */ /* Written by Dr Stephen N Henson (steve@openssl.org) 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 #include #include #ifndef OPENSSL_NO_HMAC #include #include #include #include /* 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; int md_size; 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; } md_size = EVP_MD_size(md_type); if (md_size < 0) return 0; if (!PKCS12_key_gen (pass, passlen, salt, saltlen, PKCS12_MAC_ID, iter, md_size, key, md_type)) { PKCS12err(PKCS12_F_PKCS12_GEN_MAC, PKCS12_R_KEY_GEN_ERROR); return 0; } HMAC_CTX_init(&hmac); if (!HMAC_Init_ex(&hmac, key, md_size, 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 0; } 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 = 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