1 /* $OpenBSD: xform.c,v 1.16 2001/08/28 12:20:43 ben Exp $ */
3 * The authors of this code are John Ioannidis (ji@tla.org),
4 * Angelos D. Keromytis (kermit@csd.uch.gr),
5 * Niels Provos (provos@physnet.uni-hamburg.de) and
6 * Damien Miller (djm@mindrot.org).
8 * This code was written by John Ioannidis for BSD/OS in Athens, Greece,
11 * Ported to OpenBSD and NetBSD, with additional transforms, in December 1996,
12 * by Angelos D. Keromytis.
14 * Additional transforms and features in 1997 and 1998 by Angelos D. Keromytis
17 * Additional features in 1999 by Angelos D. Keromytis.
19 * AES XTS implementation in 2008 by Damien Miller
21 * Copyright (C) 1995, 1996, 1997, 1998, 1999 by John Ioannidis,
22 * Angelos D. Keromytis and Niels Provos.
24 * Copyright (C) 2001, Angelos D. Keromytis.
26 * Copyright (C) 2008, Damien Miller
27 * Copyright (c) 2014 The FreeBSD Foundation
28 * All rights reserved.
30 * Portions of this software were developed by John-Mark Gurney
31 * under sponsorship of the FreeBSD Foundation and
32 * Rubicon Communications, LLC (Netgate).
34 * Permission to use, copy, and modify this software with or without fee
35 * is hereby granted, provided that this entire notice is included in
36 * all copies of any software which is or includes a copy or
37 * modification of this software.
38 * You may use this code under the GNU public license if you so wish. Please
39 * contribute changes back to the authors under this freer than GPL license
40 * so that we may further the use of strong encryption without limitations to
43 * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR
44 * IMPLIED WARRANTY. IN PARTICULAR, NONE OF THE AUTHORS MAKES ANY
45 * REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE
46 * MERCHANTABILITY OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR
50 #include <sys/cdefs.h>
51 __FBSDID("$FreeBSD$");
53 #include <crypto/rijndael/rijndael.h>
54 #include <opencrypto/xform_enc.h>
56 static int rijndael128_setkey(u_int8_t **, u_int8_t *, int);
57 static void rijndael128_encrypt(caddr_t, u_int8_t *);
58 static void rijndael128_decrypt(caddr_t, u_int8_t *);
59 static void rijndael128_zerokey(u_int8_t **);
61 /* Encryption instances */
62 struct enc_xform enc_xform_rijndael128 = {
63 CRYPTO_RIJNDAEL128_CBC, "Rijndael-128/AES",
64 RIJNDAEL128_BLOCK_LEN, RIJNDAEL128_BLOCK_LEN, RIJNDAEL_MIN_KEY,
74 * Encryption wrapper routines.
77 rijndael128_encrypt(caddr_t key, u_int8_t *blk)
79 rijndael_encrypt((rijndael_ctx *) key, (u_char *) blk, (u_char *) blk);
83 rijndael128_decrypt(caddr_t key, u_int8_t *blk)
85 rijndael_decrypt(((rijndael_ctx *) key), (u_char *) blk,
90 rijndael128_setkey(u_int8_t **sched, u_int8_t *key, int len)
94 if (len != 16 && len != 24 && len != 32)
96 *sched = KMALLOC(sizeof(rijndael_ctx), M_CRYPTO_DATA,
99 rijndael_set_key((rijndael_ctx *) *sched, (u_char *) key,
108 rijndael128_zerokey(u_int8_t **sched)
110 bzero(*sched, sizeof(rijndael_ctx));
111 KFREE(*sched, M_CRYPTO_DATA);