1/*
2 * Copyright (C) 2011 Google Inc. All rights reserved.
3 * Copyright (C) 2013 Apple Inc. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. Neither the name of Google, Inc. ("Google") nor the names of
15 * its contributors may be used to endorse or promote products derived
16 * from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY GOOGLE AND ITS CONTRIBUTORS "AS IS" AND ANY
19 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
20 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
21 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
22 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
23 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
24 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
25 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30
31#include "config.h"
32#include "Crypto.h"
33
34#include "Document.h"
35#include "SubtleCrypto.h"
36#include <JavaScriptCore/ArrayBufferView.h>
37#include <wtf/CryptographicallyRandomNumber.h>
38
39#if OS(DARWIN)
40#include "CommonCryptoUtilities.h"
41#endif
42
43namespace WebCore {
44
45Crypto::Crypto(ScriptExecutionContext* context)
46 : ContextDestructionObserver(context)
47#if ENABLE(WEB_CRYPTO)
48 , m_subtle(SubtleCrypto::create(context))
49#endif
50{
51}
52
53Crypto::~Crypto() = default;
54
55ExceptionOr<void> Crypto::getRandomValues(ArrayBufferView& array)
56{
57 if (!isInt(array.getType()))
58 return Exception { TypeMismatchError };
59 if (array.byteLength() > 65536)
60 return Exception { QuotaExceededError };
61#if OS(DARWIN)
62 auto rc = CCRandomGenerateBytes(array.baseAddress(), array.byteLength());
63 RELEASE_ASSERT(rc == kCCSuccess);
64#else
65 cryptographicallyRandomValues(array.baseAddress(), array.byteLength());
66#endif
67 return { };
68}
69
70#if ENABLE(WEB_CRYPTO)
71
72SubtleCrypto& Crypto::subtle()
73{
74 return m_subtle;
75}
76
77#endif
78
79}
80