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/* crypto/evp/e_des3.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_DES
#include <stdio.h>
#include "cryptlib.h"
#include <openssl/evp.h>
#include <openssl/objects.h>
#include "evp_locl.h"
static int des_ede_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
const unsigned char *iv,int enc);
static int des_ede3_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
const unsigned char *iv,int enc);
/* Because of various casts and different args can't use IMPLEMENT_BLOCK_CIPHER */
static int des_ede_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, unsigned int inl)
{
BLOCK_CIPHER_ecb_loop()
des_ecb3_encrypt((des_cblock *)(in + i), (des_cblock *)(out + i),
ctx->c.des_ede.ks1, ctx->c.des_ede.ks2, ctx->c.des_ede.ks3,
ctx->encrypt);
return 1;
}
static int des_ede_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, unsigned int inl)
{
des_ede3_ofb64_encrypt(in, out, (long)inl,
ctx->c.des_ede.ks1, ctx->c.des_ede.ks2, ctx->c.des_ede.ks3,
(des_cblock *)ctx->iv, &ctx->num);
return 1;
}
static int des_ede_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, unsigned int inl)
{
#ifdef KSSL_DEBUG
{
int i;
char *cp;
printf("des_ede_cbc_cipher(ctx=%lx, buflen=%d)\n", ctx, ctx->buf_len);
printf("\t iv= ");
for(i=0;i<8;i++)
printf("%02X",ctx->iv[i]);
printf("\n");
}
#endif /* KSSL_DEBUG */
des_ede3_cbc_encrypt(in, out, (long)inl,
ctx->c.des_ede.ks1, ctx->c.des_ede.ks2, ctx->c.des_ede.ks3,
(des_cblock *)ctx->iv, ctx->encrypt);
return 1;
}
static int des_ede_cfb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, unsigned int inl)
{
des_ede3_cfb64_encrypt(in, out, (long)inl,
ctx->c.des_ede.ks1, ctx->c.des_ede.ks2, ctx->c.des_ede.ks3,
(des_cblock *)ctx->iv, &ctx->num, ctx->encrypt);
return 1;
}
#define NID_des_ede_ecb NID_des_ede
BLOCK_CIPHER_defs(des_ede, des_ede, NID_des_ede, 8, 16, 8,
0, des_ede_init_key, NULL,
EVP_CIPHER_set_asn1_iv,
EVP_CIPHER_get_asn1_iv,
NULL)
#define NID_des_ede3_ecb NID_des_ede3
#define des_ede3_cfb_cipher des_ede_cfb_cipher
#define des_ede3_ofb_cipher des_ede_ofb_cipher
#define des_ede3_cbc_cipher des_ede_cbc_cipher
#define des_ede3_ecb_cipher des_ede_ecb_cipher
BLOCK_CIPHER_defs(des_ede3, des_ede, NID_des_ede3, 8, 24, 8,
0, des_ede3_init_key, NULL,
EVP_CIPHER_set_asn1_iv,
EVP_CIPHER_get_asn1_iv,
NULL)
static int des_ede_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[0],ctx->c.des_ede.ks1);
des_set_key_unchecked(&deskey[1],ctx->c.des_ede.ks2);
memcpy( (char *)ctx->c.des_ede.ks3,
(char *)ctx->c.des_ede.ks1,
sizeof(ctx->c.des_ede.ks1));
return 1;
}
static int des_ede3_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
const unsigned char *iv, int enc)
{
des_cblock *deskey = (des_cblock *)key;
#ifdef KSSL_DEBUG
{
int i;
printf("des_ede3_init_key(ctx=%lx)\n", ctx);
printf("\tKEY= ");
for(i=0;i<24;i++) printf("%02X",key[i]); printf("\n");
printf("\t IV= ");
for(i=0;i<8;i++) printf("%02X",iv[i]); printf("\n");
}
#endif /* KSSL_DEBUG */
des_set_key_unchecked(&deskey[0],ctx->c.des_ede.ks1);
des_set_key_unchecked(&deskey[1],ctx->c.des_ede.ks2);
des_set_key_unchecked(&deskey[2],ctx->c.des_ede.ks3);
return 1;
}
EVP_CIPHER *EVP_des_ede(void)
{
return &des_ede_ecb;
}
EVP_CIPHER *EVP_des_ede3(void)
{
return &des_ede3_ecb;
}
#endif
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