1*0Sstevel@tonic-gate /* p5_crpt.c */ 2*0Sstevel@tonic-gate /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL 3*0Sstevel@tonic-gate * project 1999. 4*0Sstevel@tonic-gate */ 5*0Sstevel@tonic-gate /* ==================================================================== 6*0Sstevel@tonic-gate * Copyright (c) 1999 The OpenSSL Project. All rights reserved. 7*0Sstevel@tonic-gate * 8*0Sstevel@tonic-gate * Redistribution and use in source and binary forms, with or without 9*0Sstevel@tonic-gate * modification, are permitted provided that the following conditions 10*0Sstevel@tonic-gate * are met: 11*0Sstevel@tonic-gate * 12*0Sstevel@tonic-gate * 1. Redistributions of source code must retain the above copyright 13*0Sstevel@tonic-gate * notice, this list of conditions and the following disclaimer. 14*0Sstevel@tonic-gate * 15*0Sstevel@tonic-gate * 2. Redistributions in binary form must reproduce the above copyright 16*0Sstevel@tonic-gate * notice, this list of conditions and the following disclaimer in 17*0Sstevel@tonic-gate * the documentation and/or other materials provided with the 18*0Sstevel@tonic-gate * distribution. 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * 3. All advertising materials mentioning features or use of this 21*0Sstevel@tonic-gate * software must display the following acknowledgment: 22*0Sstevel@tonic-gate * "This product includes software developed by the OpenSSL Project 23*0Sstevel@tonic-gate * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" 24*0Sstevel@tonic-gate * 25*0Sstevel@tonic-gate * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 26*0Sstevel@tonic-gate * endorse or promote products derived from this software without 27*0Sstevel@tonic-gate * prior written permission. For written permission, please contact 28*0Sstevel@tonic-gate * licensing@OpenSSL.org. 29*0Sstevel@tonic-gate * 30*0Sstevel@tonic-gate * 5. Products derived from this software may not be called "OpenSSL" 31*0Sstevel@tonic-gate * nor may "OpenSSL" appear in their names without prior written 32*0Sstevel@tonic-gate * permission of the OpenSSL Project. 33*0Sstevel@tonic-gate * 34*0Sstevel@tonic-gate * 6. Redistributions of any form whatsoever must retain the following 35*0Sstevel@tonic-gate * acknowledgment: 36*0Sstevel@tonic-gate * "This product includes software developed by the OpenSSL Project 37*0Sstevel@tonic-gate * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" 38*0Sstevel@tonic-gate * 39*0Sstevel@tonic-gate * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 40*0Sstevel@tonic-gate * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 41*0Sstevel@tonic-gate * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 42*0Sstevel@tonic-gate * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 43*0Sstevel@tonic-gate * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 44*0Sstevel@tonic-gate * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 45*0Sstevel@tonic-gate * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 46*0Sstevel@tonic-gate * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 47*0Sstevel@tonic-gate * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 48*0Sstevel@tonic-gate * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 49*0Sstevel@tonic-gate * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 50*0Sstevel@tonic-gate * OF THE POSSIBILITY OF SUCH DAMAGE. 51*0Sstevel@tonic-gate * ==================================================================== 52*0Sstevel@tonic-gate * 53*0Sstevel@tonic-gate * This product includes cryptographic software written by Eric Young 54*0Sstevel@tonic-gate * (eay@cryptsoft.com). This product includes software written by Tim 55*0Sstevel@tonic-gate * Hudson (tjh@cryptsoft.com). 56*0Sstevel@tonic-gate * 57*0Sstevel@tonic-gate */ 58*0Sstevel@tonic-gate 59*0Sstevel@tonic-gate #include <stdio.h> 60*0Sstevel@tonic-gate #include <stdlib.h> 61*0Sstevel@tonic-gate #include "cryptlib.h" 62*0Sstevel@tonic-gate #include <openssl/x509.h> 63*0Sstevel@tonic-gate #include <openssl/evp.h> 64*0Sstevel@tonic-gate 65*0Sstevel@tonic-gate /* PKCS#5 v1.5 compatible PBE functions: see PKCS#5 v2.0 for more info. 66*0Sstevel@tonic-gate */ 67*0Sstevel@tonic-gate 68*0Sstevel@tonic-gate void PKCS5_PBE_add(void) 69*0Sstevel@tonic-gate { 70*0Sstevel@tonic-gate #ifndef OPENSSL_NO_DES 71*0Sstevel@tonic-gate # ifndef OPENSSL_NO_MD5 72*0Sstevel@tonic-gate EVP_PBE_alg_add(NID_pbeWithMD5AndDES_CBC, EVP_des_cbc(), EVP_md5(), 73*0Sstevel@tonic-gate PKCS5_PBE_keyivgen); 74*0Sstevel@tonic-gate # endif 75*0Sstevel@tonic-gate # ifndef OPENSSL_NO_MD2 76*0Sstevel@tonic-gate EVP_PBE_alg_add(NID_pbeWithMD2AndDES_CBC, EVP_des_cbc(), EVP_md2(), 77*0Sstevel@tonic-gate PKCS5_PBE_keyivgen); 78*0Sstevel@tonic-gate # endif 79*0Sstevel@tonic-gate # ifndef OPENSSL_NO_SHA 80*0Sstevel@tonic-gate EVP_PBE_alg_add(NID_pbeWithSHA1AndDES_CBC, EVP_des_cbc(), EVP_sha1(), 81*0Sstevel@tonic-gate PKCS5_PBE_keyivgen); 82*0Sstevel@tonic-gate # endif 83*0Sstevel@tonic-gate #endif 84*0Sstevel@tonic-gate #ifndef OPENSSL_NO_RC2 85*0Sstevel@tonic-gate # ifndef OPENSSL_NO_MD5 86*0Sstevel@tonic-gate EVP_PBE_alg_add(NID_pbeWithMD5AndRC2_CBC, EVP_rc2_64_cbc(), EVP_md5(), 87*0Sstevel@tonic-gate PKCS5_PBE_keyivgen); 88*0Sstevel@tonic-gate # endif 89*0Sstevel@tonic-gate # ifndef OPENSSL_NO_MD2 90*0Sstevel@tonic-gate EVP_PBE_alg_add(NID_pbeWithMD2AndRC2_CBC, EVP_rc2_64_cbc(), EVP_md2(), 91*0Sstevel@tonic-gate PKCS5_PBE_keyivgen); 92*0Sstevel@tonic-gate # endif 93*0Sstevel@tonic-gate # ifndef OPENSSL_NO_SHA 94*0Sstevel@tonic-gate EVP_PBE_alg_add(NID_pbeWithSHA1AndRC2_CBC, EVP_rc2_64_cbc(), EVP_sha1(), 95*0Sstevel@tonic-gate PKCS5_PBE_keyivgen); 96*0Sstevel@tonic-gate # endif 97*0Sstevel@tonic-gate #endif 98*0Sstevel@tonic-gate #ifndef OPENSSL_NO_HMAC 99*0Sstevel@tonic-gate EVP_PBE_alg_add(NID_pbes2, NULL, NULL, PKCS5_v2_PBE_keyivgen); 100*0Sstevel@tonic-gate #endif 101*0Sstevel@tonic-gate } 102*0Sstevel@tonic-gate 103*0Sstevel@tonic-gate int PKCS5_PBE_keyivgen(EVP_CIPHER_CTX *cctx, const char *pass, int passlen, 104*0Sstevel@tonic-gate ASN1_TYPE *param, const EVP_CIPHER *cipher, const EVP_MD *md, 105*0Sstevel@tonic-gate int en_de) 106*0Sstevel@tonic-gate { 107*0Sstevel@tonic-gate EVP_MD_CTX ctx; 108*0Sstevel@tonic-gate unsigned char md_tmp[EVP_MAX_MD_SIZE]; 109*0Sstevel@tonic-gate unsigned char key[EVP_MAX_KEY_LENGTH], iv[EVP_MAX_IV_LENGTH]; 110*0Sstevel@tonic-gate int i; 111*0Sstevel@tonic-gate PBEPARAM *pbe; 112*0Sstevel@tonic-gate int saltlen, iter; 113*0Sstevel@tonic-gate unsigned char *salt, *pbuf; 114*0Sstevel@tonic-gate 115*0Sstevel@tonic-gate /* Extract useful info from parameter */ 116*0Sstevel@tonic-gate pbuf = param->value.sequence->data; 117*0Sstevel@tonic-gate if (!param || (param->type != V_ASN1_SEQUENCE) || 118*0Sstevel@tonic-gate !(pbe = d2i_PBEPARAM (NULL, &pbuf, param->value.sequence->length))) { 119*0Sstevel@tonic-gate EVPerr(EVP_F_PKCS5_PBE_KEYIVGEN,EVP_R_DECODE_ERROR); 120*0Sstevel@tonic-gate return 0; 121*0Sstevel@tonic-gate } 122*0Sstevel@tonic-gate 123*0Sstevel@tonic-gate if (!pbe->iter) iter = 1; 124*0Sstevel@tonic-gate else iter = ASN1_INTEGER_get (pbe->iter); 125*0Sstevel@tonic-gate salt = pbe->salt->data; 126*0Sstevel@tonic-gate saltlen = pbe->salt->length; 127*0Sstevel@tonic-gate 128*0Sstevel@tonic-gate if(!pass) passlen = 0; 129*0Sstevel@tonic-gate else if(passlen == -1) passlen = strlen(pass); 130*0Sstevel@tonic-gate 131*0Sstevel@tonic-gate EVP_MD_CTX_init(&ctx); 132*0Sstevel@tonic-gate EVP_DigestInit_ex(&ctx, md, NULL); 133*0Sstevel@tonic-gate EVP_DigestUpdate(&ctx, pass, passlen); 134*0Sstevel@tonic-gate EVP_DigestUpdate(&ctx, salt, saltlen); 135*0Sstevel@tonic-gate PBEPARAM_free(pbe); 136*0Sstevel@tonic-gate EVP_DigestFinal_ex(&ctx, md_tmp, NULL); 137*0Sstevel@tonic-gate for (i = 1; i < iter; i++) { 138*0Sstevel@tonic-gate EVP_DigestInit_ex(&ctx, md, NULL); 139*0Sstevel@tonic-gate EVP_DigestUpdate(&ctx, md_tmp, EVP_MD_size(md)); 140*0Sstevel@tonic-gate EVP_DigestFinal_ex (&ctx, md_tmp, NULL); 141*0Sstevel@tonic-gate } 142*0Sstevel@tonic-gate EVP_MD_CTX_cleanup(&ctx); 143*0Sstevel@tonic-gate OPENSSL_assert(EVP_CIPHER_key_length(cipher) <= sizeof md_tmp); 144*0Sstevel@tonic-gate memcpy(key, md_tmp, EVP_CIPHER_key_length(cipher)); 145*0Sstevel@tonic-gate OPENSSL_assert(EVP_CIPHER_iv_length(cipher) <= 16); 146*0Sstevel@tonic-gate memcpy(iv, md_tmp + (16 - EVP_CIPHER_iv_length(cipher)), 147*0Sstevel@tonic-gate EVP_CIPHER_iv_length(cipher)); 148*0Sstevel@tonic-gate EVP_CipherInit_ex(cctx, cipher, NULL, key, iv, en_de); 149*0Sstevel@tonic-gate OPENSSL_cleanse(md_tmp, EVP_MAX_MD_SIZE); 150*0Sstevel@tonic-gate OPENSSL_cleanse(key, EVP_MAX_KEY_LENGTH); 151*0Sstevel@tonic-gate OPENSSL_cleanse(iv, EVP_MAX_IV_LENGTH); 152*0Sstevel@tonic-gate return 1; 153*0Sstevel@tonic-gate } 154