1/*
2 * Copyright (c) 2019 Apple Inc. All rights reserved.
3 *
4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. The rights granted to you under the License
10 * may not be used to create, or enable the creation or redistribution of,
11 * unlawful or unlicensed copies of an Apple operating system, or to
12 * circumvent, violate, or enable the circumvention or violation of, any
13 * terms of an Apple operating system software license agreement.
14 *
15 * Please obtain a copy of the License at
16 * http://www.opensource.apple.com/apsl/ and read it before using this file.
17 *
18 * The Original Code and all software distributed under the License are
19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23 * Please see the License for the specific language governing rights and
24 * limitations under the License.
25 *
26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27 */
28
29#ifndef _PRNG_RANDOM_H_
30#define _PRNG_RANDOM_H_
31
32__BEGIN_DECLS
33
34#include <corecrypto/cckprng.h>
35
36#ifdef XNU_KERNEL_PRIVATE
37
38void random_cpu_init(int cpu);
39
40#endif /* XNU_KERNEL_PRIVATE */
41
42void register_and_init_prng(struct cckprng_ctx *ctx, const struct cckprng_funcs *funcs);
43
44#include <kern/simple_lock.h>
45/* Definitions for boolean PRNG */
46#define RANDOM_BOOL_GEN_SEED_COUNT 4
47struct bool_gen {
48 unsigned int seed[RANDOM_BOOL_GEN_SEED_COUNT];
49 unsigned int state;
50 decl_simple_lock_data(, lock);
51};
52
53extern void random_bool_init(struct bool_gen * bg);
54
55extern void random_bool_gen_entropy(struct bool_gen * bg, unsigned int * buffer, int count);
56
57extern unsigned int random_bool_gen_bits(struct bool_gen * bg, unsigned int * buffer, unsigned int count, unsigned int numbits);
58
59__END_DECLS
60
61#endif /* _PRNG_RANDOM_H_ */
62