e_des.c revision 109998
1/* crypto/evp/e_des.c */ 2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay@cryptsoft.com). 7 * The implementation was written so as to conform with Netscapes SSL. 8 * 9 * This library is free for commercial and non-commercial use as long as 10 * the following conditions are aheared to. The following conditions 11 * apply to all code found in this distribution, be it the RC4, RSA, 12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13 * included with this distribution is covered by the same copyright terms 14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15 * 16 * Copyright remains Eric Young's, and as such any Copyright notices in 17 * the code are not to be removed. 18 * If this package is used in a product, Eric Young should be given attribution 19 * as the author of the parts of the library used. 20 * This can be in the form of a textual message at program startup or 21 * in documentation (online or textual) provided with the package. 22 * 23 * Redistribution and use in source and binary forms, with or without 24 * modification, are permitted provided that the following conditions 25 * are met: 26 * 1. Redistributions of source code must retain the copyright 27 * notice, this list of conditions and the following disclaimer. 28 * 2. Redistributions in binary form must reproduce the above copyright 29 * notice, this list of conditions and the following disclaimer in the 30 * documentation and/or other materials provided with the distribution. 31 * 3. All advertising materials mentioning features or use of this software 32 * must display the following acknowledgement: 33 * "This product includes cryptographic software written by 34 * Eric Young (eay@cryptsoft.com)" 35 * The word 'cryptographic' can be left out if the rouines from the library 36 * being used are not cryptographic related :-). 37 * 4. If you include any Windows specific code (or a derivative thereof) from 38 * the apps directory (application code) you must include an acknowledgement: 39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40 * 41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51 * SUCH DAMAGE. 52 * 53 * The licence and distribution terms for any publically available version or 54 * derivative of this code cannot be changed. i.e. this code cannot simply be 55 * copied and put under another distribution licence 56 * [including the GNU Public Licence.] 57 */ 58 59#ifndef OPENSSL_NO_DES 60#include <stdio.h> 61#include "cryptlib.h" 62#include <openssl/evp.h> 63#include <openssl/objects.h> 64#include "evp_locl.h" 65#include <openssl/des.h> 66 67static int des_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, 68 const unsigned char *iv, int enc); 69 70/* Because of various casts and different names can't use IMPLEMENT_BLOCK_CIPHER */ 71 72static int des_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 73 const unsigned char *in, unsigned int inl) 74{ 75 BLOCK_CIPHER_ecb_loop() 76 DES_ecb_encrypt((DES_cblock *)(in + i), (DES_cblock *)(out + i), ctx->cipher_data, ctx->encrypt); 77 return 1; 78} 79 80static int des_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 81 const unsigned char *in, unsigned int inl) 82{ 83 DES_ofb64_encrypt(in, out, (long)inl, ctx->cipher_data, (DES_cblock *)ctx->iv, &ctx->num); 84 return 1; 85} 86 87static int des_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 88 const unsigned char *in, unsigned int inl) 89{ 90 DES_ncbc_encrypt(in, out, (long)inl, ctx->cipher_data, 91 (DES_cblock *)ctx->iv, ctx->encrypt); 92 return 1; 93} 94 95static int des_cfb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 96 const unsigned char *in, unsigned int inl) 97{ 98 DES_cfb64_encrypt(in, out, (long)inl, ctx->cipher_data, 99 (DES_cblock *)ctx->iv, &ctx->num, ctx->encrypt); 100 return 1; 101} 102 103BLOCK_CIPHER_defs(des, DES_key_schedule, NID_des, 8, 8, 8, 64, 104 0, des_init_key, NULL, 105 EVP_CIPHER_set_asn1_iv, 106 EVP_CIPHER_get_asn1_iv, 107 NULL) 108 109 110static int des_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, 111 const unsigned char *iv, int enc) 112 { 113 DES_cblock *deskey = (DES_cblock *)key; 114 115 DES_set_key_unchecked(deskey,ctx->cipher_data); 116 return 1; 117 } 118 119#endif 120