2 /* $KAME: esp_rijndael.c,v 1.4 2001/03/02 05:53:05 itojun Exp $ */
5 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
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.
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
34 #include "opt_inet6.h"
36 #include <sys/param.h>
37 #include <sys/systm.h>
38 #include <sys/socket.h>
39 #include <sys/queue.h>
42 #include <net/route.h>
44 #include <netinet6/ipsec.h>
45 #include <netinet6/esp.h>
46 #include <netinet6/esp_rijndael.h>
48 #include <crypto/rijndael/rijndael.h>
50 #include <net/net_osdep.h>
52 /* as rijndael uses assymetric scheduled keys, we need to do it twice. */
54 esp_rijndael_schedlen(algo)
55 const struct esp_algorithm *algo;
58 return sizeof(keyInstance) * 2;
62 esp_rijndael_schedule(algo, sav)
63 const struct esp_algorithm *algo;
68 k = (keyInstance *)sav->sched;
69 if (rijndael_makeKey(&k[0], DIR_DECRYPT, _KEYLEN(sav->key_enc) * 8,
70 _KEYBUF(sav->key_enc)) < 0)
72 if (rijndael_makeKey(&k[1], DIR_ENCRYPT, _KEYLEN(sav->key_enc) * 8,
73 _KEYBUF(sav->key_enc)) < 0)
79 esp_rijndael_blockdecrypt(algo, sav, s, d)
80 const struct esp_algorithm *algo;
88 /* does not take advantage of CBC mode support */
90 if (rijndael_cipherInit(&c, MODE_ECB, NULL) < 0)
92 p = (keyInstance *)sav->sched;
93 if (rijndael_blockDecrypt(&c, &p[0], s, algo->padbound * 8, d) < 0)
99 esp_rijndael_blockencrypt(algo, sav, s, d)
100 const struct esp_algorithm *algo;
101 struct secasvar *sav;
108 /* does not take advantage of CBC mode support */
109 bzero(&c, sizeof(c));
110 if (rijndael_cipherInit(&c, MODE_ECB, NULL) < 0)
112 p = (keyInstance *)sav->sched;
113 if (rijndael_blockEncrypt(&c, &p[1], s, algo->padbound * 8, d) < 0)