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 | |
38 | void random_cpu_init(int cpu); |
39 | |
40 | #endif /* XNU_KERNEL_PRIVATE */ |
41 | |
42 | void 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 |
47 | struct bool_gen { |
48 | unsigned int seed[RANDOM_BOOL_GEN_SEED_COUNT]; |
49 | unsigned int state; |
50 | decl_simple_lock_data(, lock); |
51 | }; |
52 | |
53 | extern void random_bool_init(struct bool_gen * bg); |
54 | |
55 | extern void random_bool_gen_entropy(struct bool_gen * bg, unsigned int * buffer, int count); |
56 | |
57 | extern 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 | |