168651Skris/* crypto/evp/e_idea.c */ 268651Skris/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 368651Skris * All rights reserved. 468651Skris * 568651Skris * This package is an SSL implementation written 668651Skris * by Eric Young (eay@cryptsoft.com). 768651Skris * The implementation was written so as to conform with Netscapes SSL. 868651Skris * 968651Skris * This library is free for commercial and non-commercial use as long as 1068651Skris * the following conditions are aheared to. The following conditions 1168651Skris * apply to all code found in this distribution, be it the RC4, RSA, 1268651Skris * lhash, DES, etc., code; not just the SSL code. The SSL documentation 1368651Skris * included with this distribution is covered by the same copyright terms 1468651Skris * except that the holder is Tim Hudson (tjh@cryptsoft.com). 1568651Skris * 1668651Skris * Copyright remains Eric Young's, and as such any Copyright notices in 1768651Skris * the code are not to be removed. 1868651Skris * If this package is used in a product, Eric Young should be given attribution 1968651Skris * as the author of the parts of the library used. 2068651Skris * This can be in the form of a textual message at program startup or 2168651Skris * in documentation (online or textual) provided with the package. 2268651Skris * 2368651Skris * Redistribution and use in source and binary forms, with or without 2468651Skris * modification, are permitted provided that the following conditions 2568651Skris * are met: 2668651Skris * 1. Redistributions of source code must retain the copyright 2768651Skris * notice, this list of conditions and the following disclaimer. 2868651Skris * 2. Redistributions in binary form must reproduce the above copyright 2968651Skris * notice, this list of conditions and the following disclaimer in the 3068651Skris * documentation and/or other materials provided with the distribution. 3168651Skris * 3. All advertising materials mentioning features or use of this software 3268651Skris * must display the following acknowledgement: 3368651Skris * "This product includes cryptographic software written by 3468651Skris * Eric Young (eay@cryptsoft.com)" 3568651Skris * The word 'cryptographic' can be left out if the rouines from the library 3668651Skris * being used are not cryptographic related :-). 3768651Skris * 4. If you include any Windows specific code (or a derivative thereof) from 3868651Skris * the apps directory (application code) you must include an acknowledgement: 3968651Skris * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 4068651Skris * 4168651Skris * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 4268651Skris * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 4368651Skris * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 4468651Skris * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 4568651Skris * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 4668651Skris * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 4768651Skris * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 4868651Skris * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 4968651Skris * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 5068651Skris * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 5168651Skris * SUCH DAMAGE. 5268651Skris * 5368651Skris * The licence and distribution terms for any publically available version or 5468651Skris * derivative of this code cannot be changed. i.e. this code cannot simply be 5568651Skris * copied and put under another distribution licence 5668651Skris * [including the GNU Public Licence.] 5768651Skris */ 5868651Skris 5968651Skris#include <stdio.h> 6068651Skris#include "cryptlib.h" 61160814Ssimon 62160814Ssimon#ifndef OPENSSL_NO_IDEA 6368651Skris#include <openssl/evp.h> 6468651Skris#include <openssl/objects.h> 6568651Skris#include "evp_locl.h" 66109998Smarkm#include <openssl/idea.h> 6768651Skris 6868651Skrisstatic int idea_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, 6968651Skris const unsigned char *iv,int enc); 7068651Skris 7168651Skris/* NB idea_ecb_encrypt doesn't take an 'encrypt' argument so we treat it as a special 7268651Skris * case 7368651Skris */ 7468651Skris 7568651Skrisstatic int idea_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 76238405Sjkim const unsigned char *in, size_t inl) 7768651Skris{ 7868651Skris BLOCK_CIPHER_ecb_loop() 79109998Smarkm idea_ecb_encrypt(in + i, out + i, ctx->cipher_data); 8068651Skris return 1; 8168651Skris} 8268651Skris 8368651Skris/* Can't use IMPLEMENT_BLOCK_CIPHER because idea_ecb_encrypt is different */ 8468651Skris 85109998Smarkmtypedef struct 86109998Smarkm { 87109998Smarkm IDEA_KEY_SCHEDULE ks; 88109998Smarkm } EVP_IDEA_KEY; 8968651Skris 90109998SmarkmBLOCK_CIPHER_func_cbc(idea, idea, EVP_IDEA_KEY, ks) 91109998SmarkmBLOCK_CIPHER_func_ofb(idea, idea, 64, EVP_IDEA_KEY, ks) 92109998SmarkmBLOCK_CIPHER_func_cfb(idea, idea, 64, EVP_IDEA_KEY, ks) 93109998Smarkm 94109998SmarkmBLOCK_CIPHER_defs(idea, IDEA_KEY_SCHEDULE, NID_idea, 8, 16, 8, 64, 9568651Skris 0, idea_init_key, NULL, 9668651Skris EVP_CIPHER_set_asn1_iv, EVP_CIPHER_get_asn1_iv, NULL) 9768651Skris 9868651Skrisstatic int idea_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, 9968651Skris const unsigned char *iv, int enc) 10068651Skris { 10168651Skris if(!enc) { 10268651Skris if (EVP_CIPHER_CTX_mode(ctx) == EVP_CIPH_OFB_MODE) enc = 1; 10368651Skris else if (EVP_CIPHER_CTX_mode(ctx) == EVP_CIPH_CFB_MODE) enc = 1; 10468651Skris } 105109998Smarkm if (enc) idea_set_encrypt_key(key,ctx->cipher_data); 10668651Skris else 10768651Skris { 10868651Skris IDEA_KEY_SCHEDULE tmp; 10968651Skris 11068651Skris idea_set_encrypt_key(key,&tmp); 111109998Smarkm idea_set_decrypt_key(&tmp,ctx->cipher_data); 112109998Smarkm OPENSSL_cleanse((unsigned char *)&tmp, 11368651Skris sizeof(IDEA_KEY_SCHEDULE)); 11468651Skris } 11568651Skris return 1; 11668651Skris } 11768651Skris 11868651Skris#endif 119