1 /*- 2 * Copyright (c) 2000-2015 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 * $FreeBSD$ 27 */ 28 29 #ifndef SYS_DEV_RANDOM_HASH_H_INCLUDED 30 #define SYS_DEV_RANDOM_HASH_H_INCLUDED 31 32 /* Keys are formed from cipher blocks */ 33 #define RANDOM_KEYSIZE 32 /* (in bytes) == 256 bits */ 34 #define RANDOM_KEYSIZE_WORDS (RANDOM_KEYSIZE/sizeof(uint32_t)) 35 #define RANDOM_BLOCKSIZE 16 /* (in bytes) == 128 bits */ 36 #define RANDOM_BLOCKSIZE_WORDS (RANDOM_BLOCKSIZE/sizeof(uint32_t)) 37 #define RANDOM_KEYS_PER_BLOCK (RANDOM_KEYSIZE/RANDOM_BLOCKSIZE) 38 39 /* The size of the zero block portion used to form H_d(m) */ 40 #define RANDOM_ZERO_BLOCKSIZE 64 /* (in bytes) == 512 zero bits */ 41 42 struct randomdev_hash { 43 SHA256_CTX sha; 44 }; 45 46 struct randomdev_key { 47 keyInstance key; /* Key schedule */ 48 cipherInstance cipher; /* Rijndael internal */ 49 }; 50 51 void randomdev_hash_init(struct randomdev_hash *); 52 void randomdev_hash_iterate(struct randomdev_hash *, const void *, size_t); 53 void randomdev_hash_finish(struct randomdev_hash *, void *); 54 void randomdev_encrypt_init(struct randomdev_key *, const void *); 55 void randomdev_encrypt(struct randomdev_key *context, const void *, void *, u_int); 56 57 #endif /* SYS_DEV_RANDOM_HASH_H_INCLUDED */ 58