1/*
2 * Copyright (c) 2011-12 Apple Inc. All Rights Reserved.
3 *
4 * @APPLE_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. Please obtain a copy of the License at
10 * http://www.opensource.apple.com/apsl/ and read it before using this
11 * file.
12 *
13 * The Original Code and all software distributed under the License are
14 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
15 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
16 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
18 * Please see the License for the specific language governing rights and
19 * limitations under the License.
20 *
21 * @APPLE_LICENSE_HEADER_END@
22 */
23
24#include "ossl-config.h"
25
26
27#include <stdio.h>
28#include <stdlib.h>
29
30#include "ossl-rand.h"
31/* #include "rk-roken.h" */
32#include "ossl-randi.h"
33
34/*
35 * ARC4RANDOM(3)
36 */
37static void
38arc4_seed(const void *indata, int size)
39{
40	arc4random_addrandom((unsigned char *)indata, size);
41}
42
43
44static int
45arc4_bytes(unsigned char *outdata, int size)
46{
47	arc4random_buf((void *)outdata, (size_t)size);
48	return (1);
49}
50
51
52static void
53arc4_cleanup(void)
54{
55}
56
57
58static void
59arc4_add(const void *indata, int size, double entropi)
60{
61	arc4random_addrandom((unsigned char *)indata, size);
62}
63
64
65static int
66arc4_pseudorand(unsigned char *outdata, int size)
67{
68	return (arc4_bytes(outdata, size));
69}
70
71
72static int
73arc4_status(void)
74{
75	return (1);
76}
77
78
79const RAND_METHOD ossl_rand_arc4_method =
80{
81	.seed		= arc4_seed,
82	.bytes		= arc4_bytes,
83	.cleanup	= arc4_cleanup,
84	.add		= arc4_add,
85	.pseudorand	= arc4_pseudorand,
86	.status		= arc4_status
87};
88
89const RAND_METHOD *
90RAND_arc4_method(void)
91{
92	return (&ossl_rand_arc4_method);
93}
94