diff options
Diffstat (limited to 'sys/netinet6/esp_rijndael.c')
| -rw-r--r-- | sys/netinet6/esp_rijndael.c | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/sys/netinet6/esp_rijndael.c b/sys/netinet6/esp_rijndael.c new file mode 100644 index 0000000..5b0e5fa --- /dev/null +++ b/sys/netinet6/esp_rijndael.c @@ -0,0 +1,116 @@ +/* $FreeBSD$ */ +/* $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 <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; +} |
