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author | allanjude <allanjude@FreeBSD.org> | 2015-12-30 22:43:07 +0000 |
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committer | allanjude <allanjude@FreeBSD.org> | 2015-12-30 22:43:07 +0000 |
commit | 2502999acda612f4678ed5461267695dd4647fb8 (patch) | |
tree | 12247b119e71bb44ed83dadc7581550fdd65e5c2 /sys/opencrypto/xform_rijndael.c | |
parent | f0089fdb6f3501da95454665558d11f5ee6c699c (diff) | |
download | FreeBSD-src-2502999acda612f4678ed5461267695dd4647fb8.zip FreeBSD-src-2502999acda612f4678ed5461267695dd4647fb8.tar.gz |
Break up opencrypto/xform.c so it can be reused piecemeal
Keep xform.c as a meta-file including the broken out bits
existing code that includes xform.c continues to work as normal
Individual algorithms can now be reused elsewhere, including outside
of the kernel
Reviewed by: bapt (previous version), gnn, delphij
Approved by: secteam
MFC after: 1 week
Sponsored by: ScaleEngine Inc.
Differential Revision: https://reviews.freebsd.org/D4674
Diffstat (limited to 'sys/opencrypto/xform_rijndael.c')
-rw-r--r-- | sys/opencrypto/xform_rijndael.c | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/sys/opencrypto/xform_rijndael.c b/sys/opencrypto/xform_rijndael.c new file mode 100644 index 0000000..2c974f3 --- /dev/null +++ b/sys/opencrypto/xform_rijndael.c @@ -0,0 +1,113 @@ +/* $OpenBSD: xform.c,v 1.16 2001/08/28 12:20:43 ben Exp $ */ +/*- + * The authors of this code are John Ioannidis (ji@tla.org), + * Angelos D. Keromytis (kermit@csd.uch.gr), + * Niels Provos (provos@physnet.uni-hamburg.de) and + * Damien Miller (djm@mindrot.org). + * + * This code was written by John Ioannidis for BSD/OS in Athens, Greece, + * in November 1995. + * + * Ported to OpenBSD and NetBSD, with additional transforms, in December 1996, + * by Angelos D. Keromytis. + * + * Additional transforms and features in 1997 and 1998 by Angelos D. Keromytis + * and Niels Provos. + * + * Additional features in 1999 by Angelos D. Keromytis. + * + * AES XTS implementation in 2008 by Damien Miller + * + * Copyright (C) 1995, 1996, 1997, 1998, 1999 by John Ioannidis, + * Angelos D. Keromytis and Niels Provos. + * + * Copyright (C) 2001, Angelos D. Keromytis. + * + * Copyright (C) 2008, Damien Miller + * Copyright (c) 2014 The FreeBSD Foundation + * All rights reserved. + * + * Portions of this software were developed by John-Mark Gurney + * under sponsorship of the FreeBSD Foundation and + * Rubicon Communications, LLC (Netgate). + * + * Permission to use, copy, and modify this software with or without fee + * is hereby granted, provided that this entire notice is included in + * all copies of any software which is or includes a copy or + * modification of this software. + * You may use this code under the GNU public license if you so wish. Please + * contribute changes back to the authors under this freer than GPL license + * so that we may further the use of strong encryption without limitations to + * all. + * + * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR + * IMPLIED WARRANTY. IN PARTICULAR, NONE OF THE AUTHORS MAKES ANY + * REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE + * MERCHANTABILITY OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR + * PURPOSE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <crypto/rijndael/rijndael.h> +#include <opencrypto/xform_enc.h> + +static int rijndael128_setkey(u_int8_t **, u_int8_t *, int); +static void rijndael128_encrypt(caddr_t, u_int8_t *); +static void rijndael128_decrypt(caddr_t, u_int8_t *); +static void rijndael128_zerokey(u_int8_t **); + +/* Encryption instances */ +struct enc_xform enc_xform_rijndael128 = { + CRYPTO_RIJNDAEL128_CBC, "Rijndael-128/AES", + RIJNDAEL128_BLOCK_LEN, RIJNDAEL128_BLOCK_LEN, RIJNDAEL_MIN_KEY, + RIJNDAEL_MAX_KEY, + rijndael128_encrypt, + rijndael128_decrypt, + rijndael128_setkey, + rijndael128_zerokey, + NULL, +}; + +/* + * Encryption wrapper routines. + */ +static void +rijndael128_encrypt(caddr_t key, u_int8_t *blk) +{ + rijndael_encrypt((rijndael_ctx *) key, (u_char *) blk, (u_char *) blk); +} + +static void +rijndael128_decrypt(caddr_t key, u_int8_t *blk) +{ + rijndael_decrypt(((rijndael_ctx *) key), (u_char *) blk, + (u_char *) blk); +} + +static int +rijndael128_setkey(u_int8_t **sched, u_int8_t *key, int len) +{ + int err; + + if (len != 16 && len != 24 && len != 32) + return (EINVAL); + *sched = KMALLOC(sizeof(rijndael_ctx), M_CRYPTO_DATA, + M_NOWAIT|M_ZERO); + if (*sched != NULL) { + rijndael_set_key((rijndael_ctx *) *sched, (u_char *) key, + len * 8); + err = 0; + } else + err = ENOMEM; + return err; +} + +static void +rijndael128_zerokey(u_int8_t **sched) +{ + bzero(*sched, sizeof(rijndael_ctx)); + KFREE(*sched, M_CRYPTO_DATA); + *sched = NULL; +} |