Current Path : /sys/crypto/blowfish/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
Current File : //sys/crypto/blowfish/bf_skey.c |
/* $KAME: bf_skey.c,v 1.7 2002/02/27 01:33:59 itojun Exp $ */ /* crypto/bf/bf_skey.c */ /* Copyright (C) 1995-1997 Eric Young (eay@mincom.oz.au) * All rights reserved. * * This package is an SSL implementation written * by Eric Young (eay@mincom.oz.au). * 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@mincom.oz.au). * * 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@mincom.oz.au)" * 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@mincom.oz.au)" * * 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/cdefs.h> __FBSDID("$FreeBSD: release/9.1.0/sys/crypto/blowfish/bf_skey.c 116174 2003-06-10 21:44:29Z obrien $"); #include <sys/types.h> #include <sys/time.h> #include <sys/systm.h> #include <crypto/blowfish/blowfish.h> #include <crypto/blowfish/bf_locl.h> #include <crypto/blowfish/bf_pi.h> void BF_set_key(key, len, data) BF_KEY *key; int len; unsigned char *data; { int i; BF_LONG *p, ri, in[2]; unsigned char *d, *end; memcpy((char *)key, (const char *)&bf_init, sizeof(BF_KEY)); p = key->P; if (len > ((BF_ROUNDS + 2) * 4)) len = (BF_ROUNDS + 2) * 4; d = data; end= &(data[len]); for (i = 0; i < BF_ROUNDS + 2; i++) { ri = *(d++); if (d >= end) d = data; ri <<= 8; ri |= *(d++); if (d >= end) d = data; ri <<= 8; ri |= *(d++); if (d >= end) d = data; ri <<= 8; ri |= *(d++); if (d >= end) d = data; p[i] ^= ri; } in[0] = 0L; in[1] = 0L; for (i = 0; i < BF_ROUNDS + 2; i += 2) { BF_encrypt(in, key); p[i ] = in[0]; p[i+1] = in[1]; } p = key->S; for (i = 0; i < 4 * 256; i += 2) { BF_encrypt(in, key); p[i ] = in[0]; p[i+1] = in[1]; } }