+++ /dev/null
-/* $FreeBSD: src/sys/crypto/blowfish/bf_enc.c,v 1.1.2.3 2002/03/26 10:12:23 ume Exp $ */
-/* $KAME: bf_enc.c,v 1.7 2002/02/27 01:33:59 itojun Exp $ */
-
-/* crypto/bf/bf_enc.c */
-/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
- * All rights reserved.
- *
- * This package is an SSL implementation written
- * by Eric Young (eay@cryptsoft.com).
- * The implementation was written so as to conform with Netscapes SSL.
- *
- * This library is free for commercial and non-commercial use as long as
- * the following conditions are aheared to. The following conditions
- * apply to all code found in this distribution, be it the RC4, RSA,
- * lhash, DES, etc., code; not just the SSL code. The SSL documentation
- * included with this distribution is covered by the same copyright terms
- * except that the holder is Tim Hudson (tjh@cryptsoft.com).
- *
- * Copyright remains Eric Young's, and as such any Copyright notices in
- * the code are not to be removed.
- * If this package is used in a product, Eric Young should be given attribution
- * as the author of the parts of the library used.
- * This can be in the form of a textual message at program startup or
- * in documentation (online or textual) provided with the package.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * "This product includes cryptographic software written by
- * Eric Young (eay@cryptsoft.com)"
- * The word 'cryptographic' can be left out if the rouines from the library
- * being used are not cryptographic related :-).
- * 4. If you include any Windows specific code (or a derivative thereof) from
- * the apps directory (application code) you must include an acknowledgement:
- * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
- *
- * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * The licence and distribution terms for any publically available version or
- * derivative of this code cannot be changed. i.e. this code cannot simply be
- * copied and put under another distribution licence
- * [including the GNU Public Licence.]
- */
-
-#include <sys/types.h>
-#include <crypto/blowfish/blowfish.h>
-#include <crypto/blowfish/bf_locl.h>
-
-/* Blowfish as implemented from 'Blowfish: Springer-Verlag paper'
- * (From LECTURE NOTES IN COIMPUTER SCIENCE 809, FAST SOFTWARE ENCRYPTION,
- * CAMBRIDGE SECURITY WORKSHOP, CAMBRIDGE, U.K., DECEMBER 9-11, 1993)
- */
-
-#if (BF_ROUNDS != 16) && (BF_ROUNDS != 20)
-If you set BF_ROUNDS to some value other than 16 or 20, you will have
-to modify the code.
-#endif
-
-/* XXX "data" is host endian */
-void
-BF_encrypt(BF_LONG *data, BF_KEY *key)
-{
- BF_LONG l, r, *p, *s;
-
- p = key->P;
- s= &key->S[0];
- l = data[0];
- r = data[1];
-
- l^=p[0];
- BF_ENC(r, l, s, p[ 1]);
- BF_ENC(l, r, s, p[ 2]);
- BF_ENC(r, l, s, p[ 3]);
- BF_ENC(l, r, s, p[ 4]);
- BF_ENC(r, l, s, p[ 5]);
- BF_ENC(l, r, s, p[ 6]);
- BF_ENC(r, l, s, p[ 7]);
- BF_ENC(l, r, s, p[ 8]);
- BF_ENC(r, l, s, p[ 9]);
- BF_ENC(l, r, s, p[10]);
- BF_ENC(r, l, s, p[11]);
- BF_ENC(l, r, s, p[12]);
- BF_ENC(r, l, s, p[13]);
- BF_ENC(l, r, s, p[14]);
- BF_ENC(r, l, s, p[15]);
- BF_ENC(l, r, s, p[16]);
-#if BF_ROUNDS == 20
- BF_ENC(r, l, s, p[17]);
- BF_ENC(l, r, s, p[18]);
- BF_ENC(r, l, s, p[19]);
- BF_ENC(l, r, s, p[20]);
-#endif
- r ^= p[BF_ROUNDS + 1];
-
- data[1] = l & 0xffffffff;
- data[0] = r & 0xffffffff;
-}
-
-/* XXX "data" is host endian */
-void
-BF_decrypt(BF_LONG *data, BF_KEY *key)
-{
- BF_LONG l, r, *p, *s;
-
- p = key->P;
- s= &key->S[0];
- l = data[0];
- r = data[1];
-
- l ^= p[BF_ROUNDS + 1];
-#if BF_ROUNDS == 20
- BF_ENC(r, l, s, p[20]);
- BF_ENC(l, r, s, p[19]);
- BF_ENC(r, l, s, p[18]);
- BF_ENC(l, r, s, p[17]);
-#endif
- BF_ENC(r, l, s, p[16]);
- BF_ENC(l, r, s, p[15]);
- BF_ENC(r, l, s, p[14]);
- BF_ENC(l, r, s, p[13]);
- BF_ENC(r, l, s, p[12]);
- BF_ENC(l, r, s, p[11]);
- BF_ENC(r, l, s, p[10]);
- BF_ENC(l, r, s, p[ 9]);
- BF_ENC(r, l, s, p[ 8]);
- BF_ENC(l, r, s, p[ 7]);
- BF_ENC(r, l, s, p[ 6]);
- BF_ENC(l, r, s, p[ 5]);
- BF_ENC(r, l, s, p[ 4]);
- BF_ENC(l, r, s, p[ 3]);
- BF_ENC(r, l, s, p[ 2]);
- BF_ENC(l, r, s, p[ 1]);
- r ^= p[0];
-
- data[1] = l & 0xffffffff;
- data[0] = r & 0xffffffff;
-}
projects / apple / xnu.git / blobdiff