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#include <machine/rtems-bsd-config.h>
/* $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("$FreeBSD$");
#include <rtems/bsd/sys/types.h>
#include <rtems/bsd/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];
}
}
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