diff options
Diffstat (limited to 'sys/dev/randomdev/hash.c')
-rw-r--r-- | sys/dev/randomdev/hash.c | 119 |
1 files changed, 0 insertions, 119 deletions
diff --git a/sys/dev/randomdev/hash.c b/sys/dev/randomdev/hash.c deleted file mode 100644 index 432a54b..0000000 --- a/sys/dev/randomdev/hash.c +++ /dev/null @@ -1,119 +0,0 @@ -/*- - * 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 <sys/queue.h> -#include <sys/libkern.h> -#include <sys/random.h> -#include <sys/time.h> -#include <sys/types.h> -#include <crypto/blowfish/blowfish.h> - -#include <dev/randomdev/hash.h> - -/* initialise the hash by copying in some supplied data */ -void -yarrow_hash_init(struct yarrowhash *context, void *data, size_t size) -{ - size_t count; - - count = size > KEYSIZE ? KEYSIZE : size; - memset(context->hash, 0xff, KEYSIZE); - memcpy(context->hash, data, count); -} - -/* 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 keybuffer[KEYSIZE], temp[KEYSIZE]; - size_t count; - int iteration, last, i; - - iteration = 0; - last = 0; - for (;;) { - if (size <= KEYSIZE) - last = 1; - count = size > KEYSIZE ? KEYSIZE : size; - memcpy(keybuffer, &((u_char *)data)[iteration], count); - memset(&keybuffer[KEYSIZE - count], 0xff, count); - BF_set_key(&context->hashkey, count, - &((u_char *)data)[iteration]); - BF_cbc_encrypt(context->hash, temp, KEYSIZE, &context->hashkey, - context->ivec, BF_ENCRYPT); - for (i = 0; i < KEYSIZE; i++) - context->hash[i] ^= temp[i]; - if (last) - break; - iteration += KEYSIZE; - size -= KEYSIZE; - } -} - -/* Conclude by returning a pointer to the data */ -void -yarrow_hash_finish(struct yarrowhash *context, void *buf) -{ - memcpy(buf, context->hash, sizeof(context->hash)); -} - -/* Initialise the encryption routine by setting up the key schedule */ -void -yarrow_encrypt_init(struct yarrowkey *context, void *data, size_t size) -{ - size_t count; - - count = size > KEYSIZE ? KEYSIZE : size; - BF_set_key(&context->key, size, data); -} - -/* Encrypt the supplied data using the key schedule preset in the context */ -void -yarrow_encrypt(struct yarrowkey *context, void *d_in, void *d_out, size_t size) -{ - size_t count; - int iteration, last; - - last = 0; - for (iteration = 0;; iteration += KEYSIZE) { - if (size <= KEYSIZE) - last = 1; - count = size > KEYSIZE ? KEYSIZE : size; - BF_cbc_encrypt(&((u_char *)d_in)[iteration], - &((u_char *)d_out)[iteration], count, &context->key, - context->ivec, BF_ENCRYPT); - if (last) - break; - size -= KEYSIZE; - } -} |