1/*
2 * Copyright (C) 2011 Google Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *
8 * 1.  Redistributions of source code must retain the above copyright
9 *     notice, this list of conditions and the following disclaimer.
10 * 2.  Redistributions in binary form must reproduce the above copyright
11 *     notice, this list of conditions and the following disclaimer in the
12 *     documentation and/or other materials provided with the distribution.
13 * 3.  Neither the name of Google, Inc. ("Google") nor the names of
14 *     its contributors may be used to endorse or promote products derived
15 *     from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY GOOGLE AND ITS CONTRIBUTORS "AS IS" AND ANY
18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
20 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29
30#include "config.h"
31#include "Crypto.h"
32
33#include "ExceptionCode.h"
34#include "Uint8Array.h"
35#include <wtf/CryptographicallyRandomNumber.h>
36
37namespace WebCore {
38
39namespace {
40
41bool isIntegerArray(ArrayBufferView* array)
42{
43    return array->isByteArray()
44        || array->isUnsignedByteArray()
45        || array->isShortArray()
46        || array->isUnsignedShortArray()
47        || array->isIntArray()
48        || array->isUnsignedIntArray();
49}
50
51}
52
53Crypto::Crypto()
54{
55}
56
57void Crypto::getRandomValues(ArrayBufferView* array, ExceptionCode& ec)
58{
59#if USE(OS_RANDOMNESS)
60    if (!array || !isIntegerArray(array)) {
61        ec = TYPE_MISMATCH_ERR;
62        return;
63    }
64    cryptographicallyRandomValues(array->baseAddress(), array->byteLength());
65#else
66    ASSERT_UNUSED(array, array);
67    ec = NOT_SUPPORTED_ERR;
68#endif
69}
70
71}
72