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