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
37 namespace WebCore {
38
39 namespace {
40
isIntegerArray(ArrayBufferView * array)41 bool 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
Crypto()53 Crypto::Crypto()
54 {
55 }
56
getRandomValues(ArrayBufferView * array,ExceptionCode & ec)57 void 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