1/*	$OpenBSD: xform.c,v 1.16 2001/08/28 12:20:43 ben Exp $	*/
2/*-
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).
7 *
8 * This code was written by John Ioannidis for BSD/OS in Athens, Greece,
9 * in November 1995.
10 *
11 * Ported to OpenBSD and NetBSD, with additional transforms, in December 1996,
12 * by Angelos D. Keromytis.
13 *
14 * Additional transforms and features in 1997 and 1998 by Angelos D. Keromytis
15 * and Niels Provos.
16 *
17 * Additional features in 1999 by Angelos D. Keromytis.
18 *
19 * AES XTS implementation in 2008 by Damien Miller
20 *
21 * Copyright (C) 1995, 1996, 1997, 1998, 1999 by John Ioannidis,
22 * Angelos D. Keromytis and Niels Provos.
23 *
24 * Copyright (C) 2001, Angelos D. Keromytis.
25 *
26 * Copyright (C) 2008, Damien Miller
27 * Copyright (c) 2014 The FreeBSD Foundation
28 * All rights reserved.
29 *
30 * Portions of this software were developed by John-Mark Gurney
31 * under sponsorship of the FreeBSD Foundation and
32 * Rubicon Communications, LLC (Netgate).
33 *
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
41 * all.
42 *
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
47 * PURPOSE.
48 */
49
50#include <sys/cdefs.h>
51__FBSDID("$FreeBSD$");
52
53#include <crypto/rijndael/rijndael.h>
54#include <opencrypto/xform_enc.h>
55
56static	int rijndael128_setkey(void *, const uint8_t *, int);
57static	void rijndael128_encrypt(void *, const uint8_t *, uint8_t *);
58static	void rijndael128_decrypt(void *, const uint8_t *, uint8_t *);
59
60/* Encryption instances */
61struct enc_xform enc_xform_rijndael128 = {
62	.type = CRYPTO_RIJNDAEL128_CBC,
63	.name = "Rijndael-128/AES",
64	.ctxsize = sizeof(rijndael_ctx),
65	.blocksize = RIJNDAEL128_BLOCK_LEN,
66	.ivsize = RIJNDAEL128_BLOCK_LEN,
67	.minkey = RIJNDAEL_MIN_KEY,
68	.maxkey = RIJNDAEL_MAX_KEY,
69	.encrypt = rijndael128_encrypt,
70	.decrypt = rijndael128_decrypt,
71	.setkey = rijndael128_setkey,
72};
73
74/*
75 * Encryption wrapper routines.
76 */
77static void
78rijndael128_encrypt(void *key, const uint8_t *in, uint8_t *out)
79{
80	rijndael_encrypt(key, in, out);
81}
82
83static void
84rijndael128_decrypt(void *key, const uint8_t *in, uint8_t *out)
85{
86	rijndael_decrypt(key, in, out);
87}
88
89static int
90rijndael128_setkey(void *sched, const uint8_t *key, int len)
91{
92
93	if (len != 16 && len != 24 && len != 32)
94		return (EINVAL);
95
96	rijndael_set_key(sched, key, len * 8);
97	return (0);
98}
99