sl@0: /* p5_crpt.c */ sl@0: /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL sl@0: * project 1999. sl@0: */ sl@0: /* ==================================================================== sl@0: * Copyright (c) 1999 The OpenSSL Project. All rights reserved. sl@0: * sl@0: * Redistribution and use in source and binary forms, with or without sl@0: * modification, are permitted provided that the following conditions sl@0: * are met: sl@0: * sl@0: * 1. Redistributions of source code must retain the above copyright sl@0: * notice, this list of conditions and the following disclaimer. sl@0: * sl@0: * 2. Redistributions in binary form must reproduce the above copyright sl@0: * notice, this list of conditions and the following disclaimer in sl@0: * the documentation and/or other materials provided with the sl@0: * distribution. sl@0: * sl@0: * 3. All advertising materials mentioning features or use of this sl@0: * software must display the following acknowledgment: sl@0: * "This product includes software developed by the OpenSSL Project sl@0: * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" sl@0: * sl@0: * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to sl@0: * endorse or promote products derived from this software without sl@0: * prior written permission. For written permission, please contact sl@0: * licensing@OpenSSL.org. sl@0: * sl@0: * 5. Products derived from this software may not be called "OpenSSL" sl@0: * nor may "OpenSSL" appear in their names without prior written sl@0: * permission of the OpenSSL Project. sl@0: * sl@0: * 6. Redistributions of any form whatsoever must retain the following sl@0: * acknowledgment: sl@0: * "This product includes software developed by the OpenSSL Project sl@0: * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" sl@0: * sl@0: * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY sl@0: * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE sl@0: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR sl@0: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR sl@0: * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, sl@0: * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT sl@0: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; sl@0: * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) sl@0: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, sl@0: * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) sl@0: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED sl@0: * OF THE POSSIBILITY OF SUCH DAMAGE. sl@0: * ==================================================================== sl@0: * sl@0: * This product includes cryptographic software written by Eric Young sl@0: * (eay@cryptsoft.com). This product includes software written by Tim sl@0: * Hudson (tjh@cryptsoft.com). sl@0: * sl@0: */ sl@0: sl@0: #include sl@0: #include sl@0: #include "cryptlib.h" sl@0: #include sl@0: #include sl@0: sl@0: /* PKCS#5 v1.5 compatible PBE functions: see PKCS#5 v2.0 for more info. sl@0: */ sl@0: sl@0: EXPORT_C void PKCS5_PBE_add(void) sl@0: { sl@0: #ifndef OPENSSL_NO_DES sl@0: # ifndef OPENSSL_NO_MD5 sl@0: EVP_PBE_alg_add(NID_pbeWithMD5AndDES_CBC, EVP_des_cbc(), EVP_md5(), sl@0: PKCS5_PBE_keyivgen); sl@0: # endif sl@0: # ifndef OPENSSL_NO_MD2 sl@0: EVP_PBE_alg_add(NID_pbeWithMD2AndDES_CBC, EVP_des_cbc(), EVP_md2(), sl@0: PKCS5_PBE_keyivgen); sl@0: # endif sl@0: # ifndef OPENSSL_NO_SHA sl@0: EVP_PBE_alg_add(NID_pbeWithSHA1AndDES_CBC, EVP_des_cbc(), EVP_sha1(), sl@0: PKCS5_PBE_keyivgen); sl@0: # endif sl@0: #endif sl@0: #ifndef OPENSSL_NO_RC2 sl@0: # ifndef OPENSSL_NO_MD5 sl@0: EVP_PBE_alg_add(NID_pbeWithMD5AndRC2_CBC, EVP_rc2_64_cbc(), EVP_md5(), sl@0: PKCS5_PBE_keyivgen); sl@0: # endif sl@0: # ifndef OPENSSL_NO_MD2 sl@0: EVP_PBE_alg_add(NID_pbeWithMD2AndRC2_CBC, EVP_rc2_64_cbc(), EVP_md2(), sl@0: PKCS5_PBE_keyivgen); sl@0: # endif sl@0: # ifndef OPENSSL_NO_SHA sl@0: EVP_PBE_alg_add(NID_pbeWithSHA1AndRC2_CBC, EVP_rc2_64_cbc(), EVP_sha1(), sl@0: PKCS5_PBE_keyivgen); sl@0: # endif sl@0: #endif sl@0: #ifndef OPENSSL_NO_HMAC sl@0: EVP_PBE_alg_add(NID_pbes2, NULL, NULL, PKCS5_v2_PBE_keyivgen); sl@0: #endif sl@0: } sl@0: sl@0: EXPORT_C int PKCS5_PBE_keyivgen(EVP_CIPHER_CTX *cctx, const char *pass, int passlen, sl@0: ASN1_TYPE *param, const EVP_CIPHER *cipher, const EVP_MD *md, sl@0: int en_de) sl@0: { sl@0: EVP_MD_CTX ctx; sl@0: unsigned char md_tmp[EVP_MAX_MD_SIZE]; sl@0: unsigned char key[EVP_MAX_KEY_LENGTH], iv[EVP_MAX_IV_LENGTH]; sl@0: int i; sl@0: PBEPARAM *pbe; sl@0: int saltlen, iter; sl@0: unsigned char *salt; sl@0: const unsigned char *pbuf; sl@0: sl@0: /* Extract useful info from parameter */ sl@0: if (param == NULL || param->type != V_ASN1_SEQUENCE || sl@0: param->value.sequence == NULL) { sl@0: EVPerr(EVP_F_PKCS5_PBE_KEYIVGEN,EVP_R_DECODE_ERROR); sl@0: return 0; sl@0: } sl@0: sl@0: pbuf = param->value.sequence->data; sl@0: if (!(pbe = d2i_PBEPARAM(NULL, &pbuf, param->value.sequence->length))) { sl@0: EVPerr(EVP_F_PKCS5_PBE_KEYIVGEN,EVP_R_DECODE_ERROR); sl@0: return 0; sl@0: } sl@0: sl@0: if (!pbe->iter) iter = 1; sl@0: else iter = ASN1_INTEGER_get (pbe->iter); sl@0: salt = pbe->salt->data; sl@0: saltlen = pbe->salt->length; sl@0: sl@0: if(!pass) passlen = 0; sl@0: else if(passlen == -1) passlen = strlen(pass); sl@0: sl@0: EVP_MD_CTX_init(&ctx); sl@0: EVP_DigestInit_ex(&ctx, md, NULL); sl@0: EVP_DigestUpdate(&ctx, pass, passlen); sl@0: EVP_DigestUpdate(&ctx, salt, saltlen); sl@0: PBEPARAM_free(pbe); sl@0: EVP_DigestFinal_ex(&ctx, md_tmp, NULL); sl@0: for (i = 1; i < iter; i++) { sl@0: EVP_DigestInit_ex(&ctx, md, NULL); sl@0: EVP_DigestUpdate(&ctx, md_tmp, EVP_MD_size(md)); sl@0: EVP_DigestFinal_ex (&ctx, md_tmp, NULL); sl@0: } sl@0: EVP_MD_CTX_cleanup(&ctx); sl@0: OPENSSL_assert(EVP_CIPHER_key_length(cipher) <= (int)sizeof(md_tmp)); sl@0: memcpy(key, md_tmp, EVP_CIPHER_key_length(cipher)); sl@0: OPENSSL_assert(EVP_CIPHER_iv_length(cipher) <= 16); sl@0: memcpy(iv, md_tmp + (16 - EVP_CIPHER_iv_length(cipher)), sl@0: EVP_CIPHER_iv_length(cipher)); sl@0: EVP_CipherInit_ex(cctx, cipher, NULL, key, iv, en_de); sl@0: OPENSSL_cleanse(md_tmp, EVP_MAX_MD_SIZE); sl@0: OPENSSL_cleanse(key, EVP_MAX_KEY_LENGTH); sl@0: OPENSSL_cleanse(iv, EVP_MAX_IV_LENGTH); sl@0: return 1; sl@0: }