137 lines
4.8 KiB
C
Executable file
137 lines
4.8 KiB
C
Executable file
/* $OpenBSD: e_xcbc_d.c,v 1.12 2014/07/11 08:44:48 jsing Exp $ */
|
|
/* 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.]
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
|
|
#include <openssl/opensslconf.h>
|
|
|
|
#ifndef OPENSSL_NO_DES
|
|
|
|
#include <openssl/des.h>
|
|
#include <openssl/evp.h>
|
|
#include <openssl/objects.h>
|
|
|
|
#include "evp_locl.h"
|
|
|
|
static int desx_cbc_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
|
|
const unsigned char *iv, int enc);
|
|
static int desx_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
|
const unsigned char *in, size_t inl);
|
|
|
|
|
|
typedef struct {
|
|
DES_key_schedule ks;/* key schedule */
|
|
DES_cblock inw;
|
|
DES_cblock outw;
|
|
} DESX_CBC_KEY;
|
|
|
|
#define data(ctx) ((DESX_CBC_KEY *)(ctx)->cipher_data)
|
|
|
|
static const EVP_CIPHER d_xcbc_cipher = {
|
|
NID_desx_cbc,
|
|
8, 24, 8,
|
|
EVP_CIPH_CBC_MODE,
|
|
desx_cbc_init_key,
|
|
desx_cbc_cipher,
|
|
NULL,
|
|
sizeof(DESX_CBC_KEY),
|
|
EVP_CIPHER_set_asn1_iv,
|
|
EVP_CIPHER_get_asn1_iv,
|
|
NULL,
|
|
NULL
|
|
};
|
|
|
|
const EVP_CIPHER *
|
|
EVP_desx_cbc(void)
|
|
{
|
|
return (&d_xcbc_cipher);
|
|
}
|
|
|
|
static int
|
|
desx_cbc_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
|
|
const unsigned char *iv, int enc)
|
|
{
|
|
DES_cblock *deskey = (DES_cblock *)key;
|
|
|
|
DES_set_key_unchecked(deskey, &data(ctx)->ks);
|
|
memcpy(&data(ctx)->inw[0], &key[8], 8);
|
|
memcpy(&data(ctx)->outw[0], &key[16], 8);
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
desx_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
|
const unsigned char *in, size_t inl)
|
|
{
|
|
while (inl >= EVP_MAXCHUNK) {
|
|
DES_xcbc_encrypt(in, out, (long)EVP_MAXCHUNK, &data(ctx)->ks,
|
|
(DES_cblock *)&(ctx->iv[0]), &data(ctx)->inw,
|
|
&data(ctx)->outw, ctx->encrypt);
|
|
inl -= EVP_MAXCHUNK;
|
|
in += EVP_MAXCHUNK;
|
|
out += EVP_MAXCHUNK;
|
|
}
|
|
if (inl)
|
|
DES_xcbc_encrypt(in, out, (long)inl, &data(ctx)->ks,
|
|
(DES_cblock *)&(ctx->iv[0]), &data(ctx)->inw,
|
|
&data(ctx)->outw, ctx->encrypt);
|
|
return 1;
|
|
}
|
|
#endif
|