e_des3.c revision 68651
1/* crypto/evp/e_des3.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 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 66static int des_ede_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, 67 const unsigned char *iv,int enc); 68 69static int des_ede3_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, 70 const unsigned char *iv,int enc); 71 72/* Because of various casts and different args can't use IMPLEMENT_BLOCK_CIPHER */ 73 74static int des_ede_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 75 const unsigned char *in, unsigned int inl) 76{ 77 BLOCK_CIPHER_ecb_loop() 78 des_ecb3_encrypt((des_cblock *)(in + i), (des_cblock *)(out + i), 79 ctx->c.des_ede.ks1, ctx->c.des_ede.ks2, ctx->c.des_ede.ks3, 80 ctx->encrypt); 81 return 1; 82} 83 84static int des_ede_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 85 const unsigned char *in, unsigned int inl) 86{ 87 des_ede3_ofb64_encrypt(in, out, (long)inl, 88 ctx->c.des_ede.ks1, ctx->c.des_ede.ks2, ctx->c.des_ede.ks3, 89 (des_cblock *)ctx->iv, &ctx->num); 90 return 1; 91} 92 93static int des_ede_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 94 const unsigned char *in, unsigned int inl) 95{ 96 des_ede3_cbc_encrypt(in, out, (long)inl, 97 ctx->c.des_ede.ks1, ctx->c.des_ede.ks2, ctx->c.des_ede.ks3, 98 (des_cblock *)ctx->iv, ctx->encrypt); 99 return 1; 100} 101 102static int des_ede_cfb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 103 const unsigned char *in, unsigned int inl) 104{ 105 des_ede3_cfb64_encrypt(in, out, (long)inl, 106 ctx->c.des_ede.ks1, ctx->c.des_ede.ks2, ctx->c.des_ede.ks3, 107 (des_cblock *)ctx->iv, &ctx->num, ctx->encrypt); 108 return 1; 109} 110 111#define NID_des_ede_ecb NID_des_ede 112 113BLOCK_CIPHER_defs(des_ede, des_ede, NID_des_ede, 8, 16, 8, 114 0, des_ede_init_key, NULL, 115 EVP_CIPHER_set_asn1_iv, 116 EVP_CIPHER_get_asn1_iv, 117 NULL) 118 119#define NID_des_ede3_ecb NID_des_ede3 120#define des_ede3_cfb_cipher des_ede_cfb_cipher 121#define des_ede3_ofb_cipher des_ede_ofb_cipher 122#define des_ede3_cbc_cipher des_ede_cbc_cipher 123#define des_ede3_ecb_cipher des_ede_ecb_cipher 124 125BLOCK_CIPHER_defs(des_ede3, des_ede, NID_des_ede3, 8, 24, 8, 126 0, des_ede3_init_key, NULL, 127 EVP_CIPHER_set_asn1_iv, 128 EVP_CIPHER_get_asn1_iv, 129 NULL) 130 131static int des_ede_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, 132 const unsigned char *iv, int enc) 133 { 134 des_cblock *deskey = (des_cblock *)key; 135 136 des_set_key_unchecked(&deskey[0],ctx->c.des_ede.ks1); 137 des_set_key_unchecked(&deskey[1],ctx->c.des_ede.ks2); 138 memcpy( (char *)ctx->c.des_ede.ks3, 139 (char *)ctx->c.des_ede.ks1, 140 sizeof(ctx->c.des_ede.ks1)); 141 return 1; 142 } 143 144static int des_ede3_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, 145 const unsigned char *iv, int enc) 146 { 147 des_cblock *deskey = (des_cblock *)key; 148 149 des_set_key_unchecked(&deskey[0],ctx->c.des_ede.ks1); 150 des_set_key_unchecked(&deskey[1],ctx->c.des_ede.ks2); 151 des_set_key_unchecked(&deskey[2],ctx->c.des_ede.ks3); 152 153 return 1; 154 } 155 156EVP_CIPHER *EVP_des_ede(void) 157{ 158 return &des_ede_ecb; 159} 160 161EVP_CIPHER *EVP_des_ede3(void) 162{ 163 return &des_ede3_ecb; 164} 165#endif 166