xnu-344.tar.gz

[apple/xnu.git] / bsd / netinet6 / esp_rijndael.c

diff --git a/bsd/netinet6/esp_rijndael.c b/bsd/netinet6/esp_rijndael.c
new file mode 100644 (file)
index 0000000..fa35c59
--- /dev/null
+++ b/bsd/netinet6/esp_rijndael.c
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+/*     $FreeBSD: src/sys/netinet6/esp_rijndael.c,v 1.1.2.1 2001/07/03 11:01:50 ume Exp $       */
+/*     $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 <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;
+}