mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-18 10:35:55 +00:00
e119960112
Remove unneeded includes. Deal with unused function arguments. Resolve a boatload of signed/unsigned imcompatabilities. Etc.
119 lines
3.6 KiB
C
119 lines
3.6 KiB
C
/*-
|
|
* Copyright (c) 2000 Mark R V Murray
|
|
* All rights reserved.
|
|
*
|
|
* 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 above copyright
|
|
* notice, this list of conditions and the following disclaimer
|
|
* in this position and unchanged.
|
|
* 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.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
|
|
#include <crypto/rijndael/rijndael.h>
|
|
|
|
#include <dev/random/hash.h>
|
|
|
|
/* initialise the hash by zeroing it */
|
|
void
|
|
yarrow_hash_init(struct yarrowhash *context)
|
|
{
|
|
rijndael_cipherInit(&context->cipher, MODE_CBC, NULL);
|
|
bzero(context->hash, KEYSIZE);
|
|
context->partial = 0;
|
|
}
|
|
|
|
/* Do a Davies-Meyer hash using a block cipher.
|
|
* H_0 = I
|
|
* H_i = E_M_i(H_i-1) ^ H_i-1
|
|
*/
|
|
void
|
|
yarrow_hash_iterate(struct yarrowhash *context, void *data, size_t size)
|
|
{
|
|
u_char temp[KEYSIZE];
|
|
u_int i, j;
|
|
union {
|
|
void *pv;
|
|
char *pc;
|
|
} trans;
|
|
|
|
trans.pv = data;
|
|
for (i = 0; i < size; i++) {
|
|
context->accum[context->partial++] = trans.pc[i];
|
|
if (context->partial == (KEYSIZE - 1)) {
|
|
rijndael_makeKey(&context->hashkey, DIR_ENCRYPT,
|
|
KEYSIZE*8, context->accum);
|
|
rijndael_blockEncrypt(&context->cipher,
|
|
&context->hashkey, context->hash,
|
|
KEYSIZE*8, temp);
|
|
for (j = 0; j < KEYSIZE; j++)
|
|
context->hash[j] ^= temp[j];
|
|
bzero(context->accum, KEYSIZE);
|
|
context->partial = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Conclude by returning the hash in the supplied /buf/ which must be
|
|
* KEYSIZE bytes long. Trailing data (less than KEYSIZE bytes) are
|
|
* not forgotten.
|
|
*/
|
|
void
|
|
yarrow_hash_finish(struct yarrowhash *context, void *buf)
|
|
{
|
|
u_char temp[KEYSIZE];
|
|
int i;
|
|
|
|
if (context->partial) {
|
|
rijndael_makeKey(&context->hashkey, DIR_ENCRYPT,
|
|
KEYSIZE*8, context->accum);
|
|
rijndael_blockEncrypt(&context->cipher,
|
|
&context->hashkey, context->hash,
|
|
KEYSIZE*8, temp);
|
|
for (i = 0; i < KEYSIZE; i++)
|
|
context->hash[i] ^= temp[i];
|
|
}
|
|
memcpy(buf, context->hash, KEYSIZE);
|
|
bzero(context->hash, KEYSIZE);
|
|
}
|
|
|
|
/* Initialise the encryption routine by setting up the key schedule
|
|
* from the supplied /key/ which must be KEYSIZE bytes of binary
|
|
* data.
|
|
*/
|
|
void
|
|
yarrow_encrypt_init(struct yarrowkey *context, void *data)
|
|
{
|
|
rijndael_cipherInit(&context->cipher, MODE_CBC, NULL);
|
|
rijndael_makeKey(&context->key, DIR_ENCRYPT, KEYSIZE*8, data);
|
|
}
|
|
|
|
/* Encrypt the supplied data using the key schedule preset in the context.
|
|
* KEYSIZE bytes are encrypted from /d_in/ to /d_out/.
|
|
*/
|
|
void
|
|
yarrow_encrypt(struct yarrowkey *context, void *d_in, void *d_out)
|
|
{
|
|
rijndael_blockEncrypt(&context->cipher, &context->key, d_in,
|
|
KEYSIZE*8, d_out);
|
|
}
|