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 27#ifndef SYS_DEV_RANDOM_HASH_H_INCLUDED 28#define SYS_DEV_RANDOM_HASH_H_INCLUDED 29 30#include <dev/random/uint128.h> 31 32#ifndef _KERNEL 33#define __read_frequently 34#endif 35 36/* Keys are formed from cipher blocks */ 37#define RANDOM_KEYSIZE 32 /* (in bytes) == 256 bits */ 38#define RANDOM_KEYSIZE_WORDS (RANDOM_KEYSIZE/sizeof(uint32_t)) 39#define RANDOM_BLOCKSIZE 16 /* (in bytes) == 128 bits */ 40#define RANDOM_BLOCKSIZE_WORDS (RANDOM_BLOCKSIZE/sizeof(uint32_t)) 41#define RANDOM_KEYS_PER_BLOCK (RANDOM_KEYSIZE/RANDOM_BLOCKSIZE) 42 43/* The size of the zero block portion used to form H_d(m) */ 44#define RANDOM_ZERO_BLOCKSIZE 64 /* (in bytes) == 512 zero bits */ 45 46struct randomdev_hash { 47 SHA256_CTX sha; 48}; 49 50struct randomdev_key { 51 keyInstance key; /* Key schedule */ 52 cipherInstance cipher; /* Rijndael internal */ 53}; 54 55 56extern bool random_chachamode; 57 58void randomdev_hash_init(struct randomdev_hash *); 59void randomdev_hash_iterate(struct randomdev_hash *, const void *, size_t); 60void randomdev_hash_finish(struct randomdev_hash *, void *); 61void randomdev_encrypt_init(struct randomdev_key *, const void *); 62void randomdev_encrypt(struct randomdev_key *context, const void *, void *, u_int); 63 64#endif /* SYS_DEV_RANDOM_HASH_H_INCLUDED */ 65