/* * Glue Code for assembler optimized version of TWOFISH * * Originally Twofish for GPG * By Matthew Skala <[email protected]>, July 26, 1998 * 256-bit key length added March 20, 1999 * Some modifications to reduce the text size by Werner Koch, April, 1998 * Ported to the kerneli patch by Marc Mutz <[email protected]> * Ported to CryptoAPI by Colin Slater <[email protected]> * * The original author has disclaimed all copyright interest in this * code and thus put it in the public domain. The subsequent authors * have put this under the GNU General Public License. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 * USA * * This code is a "clean room" implementation, written from the paper * _Twofish: A 128-Bit Block Cipher_ by Bruce Schneier, John Kelsey, * Doug Whiting, David Wagner, Chris Hall, and Niels Ferguson, available * through http://www.counterpane.com/twofish.html * * For background information on multiplication in finite fields, used for * the matrix operations in the key schedule, see the book _Contemporary * Abstract Algebra_ by Joseph A. Gallian, especially chapter 22 in the * Third Edition. */ #include <crypto/algapi.h> #include <crypto/twofish.h> #include <linux/init.h> #include <linux/module.h> #include <linux/types.h> asmlinkage void twofish_enc_blk(struct twofish_ctx *ctx, u8 *dst, const u8 *src); EXPORT_SYMBOL_GPL(…); asmlinkage void twofish_dec_blk(struct twofish_ctx *ctx, u8 *dst, const u8 *src); EXPORT_SYMBOL_GPL(…); static void twofish_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src) { … } static void twofish_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src) { … } static struct crypto_alg alg = …; static int __init twofish_glue_init(void) { … } static void __exit twofish_glue_fini(void) { … } module_init(…) …; module_exit(twofish_glue_fini); MODULE_LICENSE(…) …; MODULE_DESCRIPTION(…) …; MODULE_ALIAS_CRYPTO(…) …; MODULE_ALIAS_CRYPTO(…) …;
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