mirror of
https://github.com/openssl/openssl.git
synced 2024-11-27 05:21:51 +08:00
113 lines
4.5 KiB
C
113 lines
4.5 KiB
C
/* 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 NO_IDEA
|
|
|
|
#include <stdio.h>
|
|
#include "cryptlib.h"
|
|
#include <openssl/evp.h>
|
|
#include <openssl/objects.h>
|
|
#include "evp_locl.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->c.idea_ks);
|
|
return 1;
|
|
}
|
|
|
|
/* Can't use IMPLEMENT_BLOCK_CIPHER because idea_ecb_encrypt is different */
|
|
|
|
BLOCK_CIPHER_func_cbc(idea, idea, idea_ks)
|
|
BLOCK_CIPHER_func_ofb(idea, idea, idea_ks)
|
|
BLOCK_CIPHER_func_cfb(idea, idea, idea_ks)
|
|
|
|
BLOCK_CIPHER_defs(idea, idea_ks, NID_idea, 8, 16, 8,
|
|
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->c.idea_ks));
|
|
else
|
|
{
|
|
IDEA_KEY_SCHEDULE tmp;
|
|
|
|
idea_set_encrypt_key(key,&tmp);
|
|
idea_set_decrypt_key(&tmp,&(ctx->c.idea_ks));
|
|
memset((unsigned char *)&tmp,0,
|
|
sizeof(IDEA_KEY_SCHEDULE));
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
#endif
|