hash.h revision 255362 
1/*-
2 * Copyright (c) 2000-2013 Mark R V Murray
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer
10 *    in this position and unchanged.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 *
26 * $FreeBSD: head/sys/dev/random/hash.h 255362 2013-09-07 14:15:13Z markm $
27 */
28
29#define	KEYSIZE		32	/* (in bytes) == 256 bits */
30#define	BLOCKSIZE	16	/* (in bytes) == 128 bits */
31
32struct randomdev_hash {		/* Big! Make static! */
33	SHA256_CTX	sha;
34};
35
36struct randomdev_key {		/* Big! Make static! */
37	keyInstance key;	/* Key schedule */
38	cipherInstance cipher;	/* Rijndael internal */
39};
40
41void randomdev_hash_init(struct randomdev_hash *);
42void randomdev_hash_iterate(struct randomdev_hash *, void *, size_t);
43void randomdev_hash_finish(struct randomdev_hash *, void *);
44void randomdev_encrypt_init(struct randomdev_key *, void *);
45void randomdev_encrypt(struct randomdev_key *context, void *, void *, unsigned);
46