/* crypto/evp/e_idea.c *//* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) * All rights reserved. * * This package is an SSL implementation written * by Eric Young (eay@cryptsoft.com). * The implementation was written so as to conform with Netscapes SSL. *  * This library is free for commercial and non-commercial use as long as * the following conditions are aheared to.  The following conditions * apply to all code found in this distribution, be it the RC4, RSA, * lhash, DES, etc., code; not just the SSL code.  The SSL documentation * included with this distribution is covered by the same copyright terms * except that the holder is Tim Hudson (tjh@cryptsoft.com). *  * Copyright remains Eric Young's, and as such any Copyright notices in * the code are not to be removed. * If this package is used in a product, Eric Young should be given attribution * as the author of the parts of the library used. * This can be in the form of a textual message at program startup or * in documentation (online or textual) provided with the package. *  * 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 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 acknowledgement: *    "This product includes cryptographic software written by *     Eric Young (eay@cryptsoft.com)" *    The word 'cryptographic' can be left out if the rouines from the library *    being used are not cryptographic related :-). * 4. If you include any Windows specific code (or a derivative thereof) from  *    the apps directory (application code) you must include an acknowledgement: *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" *  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND * ANY EXPRESS 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 AUTHOR OR 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. *  * The licence and distribution terms for any publically available version or * derivative of this code cannot be changed.  i.e. this code cannot simply be * copied and put under another distribution licence * [including the GNU Public Licence.] */#ifndef OPENSSL_NO_IDEA#include <stdio.h>#include "cryptlib.h"#include <openssl/evp.h>#include <openssl/objects.h>#include "evp_locl.h"#include <openssl/idea.h>static int idea_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,			 const unsigned char *iv,int enc);/* NB idea_ecb_encrypt doesn't take an 'encrypt' argument so we treat it as a special * case  */static int idea_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,			   const unsigned char *in, unsigned int inl){	BLOCK_CIPHER_ecb_loop()		idea_ecb_encrypt(in + i, out + i, ctx->cipher_data);	return 1;}/* Can't use IMPLEMENT_BLOCK_CIPHER because idea_ecb_encrypt is different */typedef struct	{	IDEA_KEY_SCHEDULE ks;	} EVP_IDEA_KEY;BLOCK_CIPHER_func_cbc(idea, idea, EVP_IDEA_KEY, ks)BLOCK_CIPHER_func_ofb(idea, idea, 64, EVP_IDEA_KEY, ks)BLOCK_CIPHER_func_cfb(idea, idea, 64, EVP_IDEA_KEY, ks)BLOCK_CIPHER_defs(idea, IDEA_KEY_SCHEDULE, NID_idea, 8, 16, 8, 64,			0, idea_init_key, NULL, 			EVP_CIPHER_set_asn1_iv, EVP_CIPHER_get_asn1_iv, NULL)static int idea_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,			 const unsigned char *iv, int enc)	{	if(!enc) {		if (EVP_CIPHER_CTX_mode(ctx) == EVP_CIPH_OFB_MODE) enc = 1;		else if (EVP_CIPHER_CTX_mode(ctx) == EVP_CIPH_CFB_MODE) enc = 1;	}	if (enc) idea_set_encrypt_key(key,ctx->cipher_data);	else		{		IDEA_KEY_SCHEDULE tmp;		idea_set_encrypt_key(key,&tmp);		idea_set_decrypt_key(&tmp,ctx->cipher_data);		OPENSSL_cleanse((unsigned char *)&tmp,				sizeof(IDEA_KEY_SCHEDULE));		}	return 1;	}#endif