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/*
25 * Copyright (c) 2010 Kungliga Tekniska Högskolan
26 * (Royal Institute of Technology, Stockholm, Sweden).
27 * All rights reserved.
28 *
29 * Portions Copyright (c) 2010 Apple Inc. All rights reserved.
30 *
31 * Redistribution and use in source and binary forms, with or without
32 * modification, are permitted provided that the following conditions
33 * are met:
34 *
35 * 1. Redistributions of source code must retain the above copyright
36 *    notice, this list of conditions and the following disclaimer.
37 *
38 * 2. Redistributions in binary form must reproduce the above copyright
39 *    notice, this list of conditions and the following disclaimer in the
40 *    documentation and/or other materials provided with the distribution.
41 *
42 * 3. Neither the name of the Institute nor the names of its contributors
43 *    may be used to endorse or promote products derived from this software
44 *    without specific prior written permission.
45 *
46 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
47 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
48 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
49 * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
50 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
51 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
52 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
53 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
54 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
55 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
56 * SUCH DAMAGE.
57 */
58
59#include "ossl-config.h"
60
61
62#include <stdio.h>
63#include <stdlib.h>
64
65#include "ossl-rand.h"
66#include "ossl-randi.h"
67
68#if defined(__APPLE_PRIVATE__) && !defined(__APPLE_TARGET_EMBEDDED__)
69
70#include <CommonCrypto/CommonRandomSPI.h>
71
72/*
73 * Unix /dev/random
74 */
75static void
76cc_seed(const void *indata, int size)
77{
78}
79
80
81static int
82cc_bytes(unsigned char *outdata, int size)
83{
84	/*
85	 * XXX until rdar://problem/8174874 is fixed CCRandomCopyBytes()
86	 * won't work for sshd.
87	 */
88	if (CCRandomCopyBytes(kCCRandomDefault, outdata, size) != kCCSuccess) {
89		return (0);
90	}
91	return (1);
92}
93
94
95static void
96cc_cleanup(void)
97{
98}
99
100
101static void
102cc_add(const void *indata, int size, double entropi)
103{
104}
105
106
107static int
108cc_pseudorand(unsigned char *outdata, int size)
109{
110	return (cc_bytes(outdata, size));
111}
112
113
114static int
115cc_status(void)
116{
117	return (1);
118}
119
120
121const RAND_METHOD ossl_rand_cc_method =
122{
123	.seed		= cc_seed,
124	.bytes		= cc_bytes,
125	.cleanup	= cc_cleanup,
126	.add		= cc_add,
127	.pseudorand	= cc_pseudorand,
128	.status		= cc_status
129};
130
131#endif /* __APPLE_PRIVATE__ */
132
133const RAND_METHOD *
134RAND_cc_method(void)
135{
136#if defined(__APPLE_PRIVATE__) && !defined(__APPLE_TARGET_EMBEDDED__)
137	return (&ossl_rand_cc_method);
138
139#else
140	return (NULL);
141#endif
142}
143