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/*-
* Copyright (c) 2000-2015 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.
*
* $FreeBSD$
*/
#ifndef SYS_DEV_RANDOM_HASH_H_INCLUDED
#define SYS_DEV_RANDOM_HASH_H_INCLUDED
/* Keys are formed from cipher blocks */
#define RANDOM_KEYSIZE 32 /* (in bytes) == 256 bits */
#define RANDOM_KEYSIZE_WORDS (RANDOM_KEYSIZE/sizeof(uint32_t))
#define RANDOM_BLOCKSIZE 16 /* (in bytes) == 128 bits */
#define RANDOM_BLOCKSIZE_WORDS (RANDOM_BLOCKSIZE/sizeof(uint32_t))
#define RANDOM_KEYS_PER_BLOCK (RANDOM_KEYSIZE/RANDOM_BLOCKSIZE)
/* The size of the zero block portion used to form H_d(m) */
#define RANDOM_ZERO_BLOCKSIZE 64 /* (in bytes) == 512 zero bits */
struct randomdev_hash {
SHA256_CTX sha;
};
struct randomdev_key {
keyInstance key; /* Key schedule */
cipherInstance cipher; /* Rijndael internal */
};
void randomdev_hash_init(struct randomdev_hash *);
void randomdev_hash_iterate(struct randomdev_hash *, const void *, size_t);
void randomdev_hash_finish(struct randomdev_hash *, void *);
void randomdev_encrypt_init(struct randomdev_key *, const void *);
void randomdev_encrypt(struct randomdev_key *context, const void *, void *, u_int);
#endif /* SYS_DEV_RANDOM_HASH_H_INCLUDED */
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