118 lines
3.4 KiB
C
118 lines
3.4 KiB
C
/* $FreeBSD$ */
|
|
/* $KAME: esp_rijndael.c,v 1.4 2001/03/02 05:53:05 itojun Exp $ */
|
|
|
|
/*
|
|
* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
|
|
* All rights reserved.
|
|
*
|
|
* 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 above 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. Neither the name of the project nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``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 PROJECT 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.
|
|
*/
|
|
|
|
#include "opt_inet.h"
|
|
#include "opt_inet6.h"
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/queue.h>
|
|
|
|
#include <net/if.h>
|
|
#include <net/route.h>
|
|
#include <netinet/in.h>
|
|
|
|
#include <netinet6/ipsec.h>
|
|
#include <netinet6/esp.h>
|
|
#include <netinet6/esp_rijndael.h>
|
|
|
|
#include <crypto/rijndael/rijndael.h>
|
|
|
|
#include <net/net_osdep.h>
|
|
|
|
/* as rijndael uses assymetric scheduled keys, we need to do it twice. */
|
|
int
|
|
esp_rijndael_schedlen(algo)
|
|
const struct esp_algorithm *algo;
|
|
{
|
|
|
|
return sizeof(keyInstance) * 2;
|
|
}
|
|
|
|
int
|
|
esp_rijndael_schedule(algo, sav)
|
|
const struct esp_algorithm *algo;
|
|
struct secasvar *sav;
|
|
{
|
|
keyInstance *k;
|
|
|
|
k = (keyInstance *)sav->sched;
|
|
if (rijndael_makeKey(&k[0], DIR_DECRYPT, _KEYLEN(sav->key_enc) * 8,
|
|
_KEYBUF(sav->key_enc)) < 0)
|
|
return -1;
|
|
if (rijndael_makeKey(&k[1], DIR_ENCRYPT, _KEYLEN(sav->key_enc) * 8,
|
|
_KEYBUF(sav->key_enc)) < 0)
|
|
return -1;
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
esp_rijndael_blockdecrypt(algo, sav, s, d)
|
|
const struct esp_algorithm *algo;
|
|
struct secasvar *sav;
|
|
u_int8_t *s;
|
|
u_int8_t *d;
|
|
{
|
|
cipherInstance c;
|
|
keyInstance *p;
|
|
|
|
/* does not take advantage of CBC mode support */
|
|
bzero(&c, sizeof(c));
|
|
if (rijndael_cipherInit(&c, MODE_ECB, NULL) < 0)
|
|
return -1;
|
|
p = (keyInstance *)sav->sched;
|
|
if (rijndael_blockDecrypt(&c, &p[0], s, algo->padbound * 8, d) < 0)
|
|
return -1;
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
esp_rijndael_blockencrypt(algo, sav, s, d)
|
|
const struct esp_algorithm *algo;
|
|
struct secasvar *sav;
|
|
u_int8_t *s;
|
|
u_int8_t *d;
|
|
{
|
|
cipherInstance c;
|
|
keyInstance *p;
|
|
|
|
/* does not take advantage of CBC mode support */
|
|
bzero(&c, sizeof(c));
|
|
if (rijndael_cipherInit(&c, MODE_ECB, NULL) < 0)
|
|
return -1;
|
|
p = (keyInstance *)sav->sched;
|
|
if (rijndael_blockEncrypt(&c, &p[1], s, algo->padbound * 8, d) < 0)
|
|
return -1;
|
|
return 0;
|
|
}
|