sys/netinet6/esp_rijndael.c

   1 /*      $NetBSD: esp_rijndael.c,v 1.19 2006/10/12 01:32:38 christos Exp $       */
   2 /*      $KAME: esp_rijndael.c,v 1.4 2001/03/02 05:53:05 itojun Exp $    */
   3
   4 /*
   5  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. Neither the name of the project nor the names of its contributors
  17  *    may be used to endorse or promote products derived from this software
  18  *    without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
  21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
  24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30  * SUCH DAMAGE.
  31  */
  32
  33 #include <sys/cdefs.h>
  34 __KERNEL_RCSID(0, "$NetBSD: esp_rijndael.c,v 1.19 2006/10/12 01:32:38 christos Exp $");
  35
  36 #include <sys/param.h>
  37 #include <sys/systm.h>
  38 #include <sys/socket.h>
  39 #include <sys/queue.h>
  40
  41 #include <net/if.h>
  42 #include <net/route.h>
  43 #include <netinet/in.h>
  44
  45 #include <netinet6/ipsec.h>
  46 #include <netinet6/esp.h>
  47 #include <netinet6/esp_rijndael.h>
  48
  49 #include <crypto/rijndael/rijndael.h>
  50
  51 #include <net/net_osdep.h>
  52
  53 size_t
  54 esp_rijndael_schedlen(const struct esp_algorithm *algo)
  55 {
  56
  57         return sizeof(rijndael_ctx);
  58 }
  59
  60 int
  61 esp_rijndael_schedule(const struct esp_algorithm *algo,
  62     struct secasvar *sav)
  63 {
  64         rijndael_ctx *ctx;
  65
  66         ctx = (rijndael_ctx *)sav->sched;
  67         rijndael_set_key(ctx,
  68             (u_char *)_KEYBUF(sav->key_enc), _KEYLEN(sav->key_enc) * 8);
  69         return 0;
  70 }
  71
  72 int
  73 esp_rijndael_blockdecrypt(const struct esp_algorithm *algo,
  74     struct secasvar *sav, u_int8_t *s, u_int8_t *d)
  75 {
  76         rijndael_ctx *ctx;
  77
  78         ctx = (rijndael_ctx *)sav->sched;
  79         rijndael_decrypt(ctx, s, d);
  80         return 0;
  81 }
  82
  83 int
  84 esp_rijndael_blockencrypt(const struct esp_algorithm *algo,
  85     struct secasvar *sav, u_int8_t *s, u_int8_t *d)
  86 {
  87         rijndael_ctx *ctx;
  88
  89         ctx = (rijndael_ctx *)sav->sched;
  90         rijndael_encrypt(ctx, s, d);
  91         return 0;
  92 }