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/blowfish/blowfish.h>
54 #include <opencrypto/xform_enc.h>
56 static int blf_setkey(u_int8_t **, u_int8_t *, int);
57 static void blf_encrypt(caddr_t, u_int8_t *);
58 static void blf_decrypt(caddr_t, u_int8_t *);
59 static void blf_zerokey(u_int8_t **);
61 /* Encryption instances */
62 struct enc_xform enc_xform_blf = {
63 CRYPTO_BLF_CBC, "Blowfish",
64 BLOWFISH_BLOCK_LEN, BLOWFISH_BLOCK_LEN, BLOWFISH_MIN_KEY,
74 * Encryption wrapper routines.
77 blf_encrypt(caddr_t key, u_int8_t *blk)
81 memcpy(t, blk, sizeof (t));
84 /* NB: BF_encrypt expects the block in host order! */
85 BF_encrypt(t, (BF_KEY *) key);
88 memcpy(blk, t, sizeof (t));
92 blf_decrypt(caddr_t key, u_int8_t *blk)
96 memcpy(t, blk, sizeof (t));
99 /* NB: BF_decrypt expects the block in host order! */
100 BF_decrypt(t, (BF_KEY *) key);
103 memcpy(blk, t, sizeof (t));
107 blf_setkey(u_int8_t **sched, u_int8_t *key, int len)
111 *sched = KMALLOC(sizeof(BF_KEY),
112 M_CRYPTO_DATA, M_NOWAIT|M_ZERO);
113 if (*sched != NULL) {
114 BF_set_key((BF_KEY *) *sched, len, key);
122 blf_zerokey(u_int8_t **sched)
124 bzero(*sched, sizeof(BF_KEY));
125 KFREE(*sched, M_CRYPTO_DATA);