X-Git-Url: https://git.openssl.org/gitweb/?a=blobdiff_plain;f=crypto%2Fevp%2Fp5_crpt.c;h=7e55d0bfb8172decba39cebba9bce93d95c296c8;hb=4eefdbda815c2cd76d788049c839e90a5ac6b843;hp=48d50014a04147843fc93ef5dc9390f4e76e4322;hpb=c755c5fd8ba5771691451e9d1b163544fdadb7ec;p=openssl.git diff --git a/crypto/evp/p5_crpt.c b/crypto/evp/p5_crpt.c index 48d50014a0..7e55d0bfb8 100644 --- a/crypto/evp/p5_crpt.c +++ b/crypto/evp/p5_crpt.c @@ -1,159 +1,103 @@ -/* p5_crpt.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). +/* + * Copyright 1999-2016 The OpenSSL Project Authors. All Rights Reserved. * + * Licensed under the OpenSSL license (the "License"). You may not use + * this file except in compliance with the License. You can obtain a copy + * in the file LICENSE in the source distribution or at + * https://www.openssl.org/source/license.html */ #include #include -#include "cryptlib.h" +#include "internal/cryptlib.h" #include #include -/* PKCS#5 v1.5 compatible PBE functions: see PKCS#5 v2.0 for more info. +/* + * Doesn't do anything now: Builtin PBE algorithms in static table. */ void PKCS5_PBE_add(void) { -#ifndef OPENSSL_NO_DES -# ifndef OPENSSL_NO_MD5 -EVP_PBE_alg_add(NID_pbeWithMD5AndDES_CBC, EVP_des_cbc(), EVP_md5(), - PKCS5_PBE_keyivgen); -# endif -# ifndef OPENSSL_NO_MD2 -EVP_PBE_alg_add(NID_pbeWithMD2AndDES_CBC, EVP_des_cbc(), EVP_md2(), - PKCS5_PBE_keyivgen); -# endif -# ifndef OPENSSL_NO_SHA -EVP_PBE_alg_add(NID_pbeWithSHA1AndDES_CBC, EVP_des_cbc(), EVP_sha1(), - PKCS5_PBE_keyivgen); -# endif -#endif -#ifndef OPENSSL_NO_RC2 -# ifndef OPENSSL_NO_MD5 -EVP_PBE_alg_add(NID_pbeWithMD5AndRC2_CBC, EVP_rc2_64_cbc(), EVP_md5(), - PKCS5_PBE_keyivgen); -# endif -# ifndef OPENSSL_NO_MD2 -EVP_PBE_alg_add(NID_pbeWithMD2AndRC2_CBC, EVP_rc2_64_cbc(), EVP_md2(), - PKCS5_PBE_keyivgen); -# endif -# ifndef OPENSSL_NO_SHA -EVP_PBE_alg_add(NID_pbeWithSHA1AndRC2_CBC, EVP_rc2_64_cbc(), EVP_sha1(), - PKCS5_PBE_keyivgen); -# endif -#endif -#ifndef OPENSSL_NO_HMAC -EVP_PBE_alg_add(NID_pbes2, NULL, NULL, PKCS5_v2_PBE_keyivgen); -#endif } int PKCS5_PBE_keyivgen(EVP_CIPHER_CTX *cctx, const char *pass, int passlen, - ASN1_TYPE *param, const EVP_CIPHER *cipher, const EVP_MD *md, - int en_de) + ASN1_TYPE *param, const EVP_CIPHER *cipher, + const EVP_MD *md, int en_de) { - EVP_MD_CTX ctx; - unsigned char md_tmp[EVP_MAX_MD_SIZE]; - unsigned char key[EVP_MAX_KEY_LENGTH], iv[EVP_MAX_IV_LENGTH]; - int i; - PBEPARAM *pbe; - int saltlen, iter; - unsigned char *salt; - const unsigned char *pbuf; + EVP_MD_CTX *ctx; + unsigned char md_tmp[EVP_MAX_MD_SIZE]; + unsigned char key[EVP_MAX_KEY_LENGTH], iv[EVP_MAX_IV_LENGTH]; + int i; + PBEPARAM *pbe; + int saltlen, iter; + unsigned char *salt; + int mdsize; + int rv = 0; + + /* Extract useful info from parameter */ + if (param == NULL || param->type != V_ASN1_SEQUENCE || + param->value.sequence == NULL) { + EVPerr(EVP_F_PKCS5_PBE_KEYIVGEN, EVP_R_DECODE_ERROR); + return 0; + } - /* Extract useful info from parameter */ - if (param == NULL || param->type != V_ASN1_SEQUENCE || - param->value.sequence == NULL) { - EVPerr(EVP_F_PKCS5_PBE_KEYIVGEN,EVP_R_DECODE_ERROR); - return 0; - } + pbe = ASN1_TYPE_unpack_sequence(ASN1_ITEM_rptr(PBEPARAM), param); + if (pbe == NULL) { + EVPerr(EVP_F_PKCS5_PBE_KEYIVGEN, EVP_R_DECODE_ERROR); + return 0; + } - pbuf = param->value.sequence->data; - if (!(pbe = d2i_PBEPARAM(NULL, &pbuf, param->value.sequence->length))) { - EVPerr(EVP_F_PKCS5_PBE_KEYIVGEN,EVP_R_DECODE_ERROR); - return 0; - } + if (!pbe->iter) + iter = 1; + else + iter = ASN1_INTEGER_get(pbe->iter); + salt = pbe->salt->data; + saltlen = pbe->salt->length; - if (!pbe->iter) iter = 1; - else iter = ASN1_INTEGER_get (pbe->iter); - salt = pbe->salt->data; - saltlen = pbe->salt->length; + if (!pass) + passlen = 0; + else if (passlen == -1) + passlen = strlen(pass); - if(!pass) passlen = 0; - else if(passlen == -1) passlen = strlen(pass); + ctx = EVP_MD_CTX_new(); + if (ctx == NULL) { + EVPerr(EVP_F_PKCS5_PBE_KEYIVGEN, ERR_R_MALLOC_FAILURE); + goto err; + } - EVP_MD_CTX_init(&ctx); - EVP_DigestInit_ex(&ctx, md, NULL); - EVP_DigestUpdate(&ctx, pass, passlen); - EVP_DigestUpdate(&ctx, salt, saltlen); - PBEPARAM_free(pbe); - EVP_DigestFinal_ex(&ctx, md_tmp, NULL); - for (i = 1; i < iter; i++) { - EVP_DigestInit_ex(&ctx, md, NULL); - EVP_DigestUpdate(&ctx, md_tmp, EVP_MD_size(md)); - EVP_DigestFinal_ex (&ctx, md_tmp, NULL); - } - EVP_MD_CTX_cleanup(&ctx); - OPENSSL_assert(EVP_CIPHER_key_length(cipher) <= (int)sizeof(md_tmp)); - memcpy(key, md_tmp, EVP_CIPHER_key_length(cipher)); - OPENSSL_assert(EVP_CIPHER_iv_length(cipher) <= 16); - memcpy(iv, md_tmp + (16 - EVP_CIPHER_iv_length(cipher)), - EVP_CIPHER_iv_length(cipher)); - EVP_CipherInit_ex(cctx, cipher, NULL, key, iv, en_de); - OPENSSL_cleanse(md_tmp, EVP_MAX_MD_SIZE); - OPENSSL_cleanse(key, EVP_MAX_KEY_LENGTH); - OPENSSL_cleanse(iv, EVP_MAX_IV_LENGTH); - return 1; + if (!EVP_DigestInit_ex(ctx, md, NULL)) + goto err; + if (!EVP_DigestUpdate(ctx, pass, passlen)) + goto err; + if (!EVP_DigestUpdate(ctx, salt, saltlen)) + goto err; + PBEPARAM_free(pbe); + if (!EVP_DigestFinal_ex(ctx, md_tmp, NULL)) + goto err; + mdsize = EVP_MD_size(md); + if (mdsize < 0) + return 0; + for (i = 1; i < iter; i++) { + if (!EVP_DigestInit_ex(ctx, md, NULL)) + goto err; + if (!EVP_DigestUpdate(ctx, md_tmp, mdsize)) + goto err; + if (!EVP_DigestFinal_ex(ctx, md_tmp, NULL)) + goto err; + } + OPENSSL_assert(EVP_CIPHER_key_length(cipher) <= (int)sizeof(md_tmp)); + memcpy(key, md_tmp, EVP_CIPHER_key_length(cipher)); + OPENSSL_assert(EVP_CIPHER_iv_length(cipher) <= 16); + memcpy(iv, md_tmp + (16 - EVP_CIPHER_iv_length(cipher)), + EVP_CIPHER_iv_length(cipher)); + if (!EVP_CipherInit_ex(cctx, cipher, NULL, key, iv, en_de)) + goto err; + OPENSSL_cleanse(md_tmp, EVP_MAX_MD_SIZE); + OPENSSL_cleanse(key, EVP_MAX_KEY_LENGTH); + OPENSSL_cleanse(iv, EVP_MAX_IV_LENGTH); + rv = 1; + err: + EVP_MD_CTX_free(ctx); + return rv; }