1/*
2 * Copyright (C) 2017 Apple 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 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#pragma once
27
28#include "BufferSource.h"
29#include "CryptoAlgorithmParameters.h"
30#include <wtf/Vector.h>
31
32#if ENABLE(WEB_CRYPTO)
33
34namespace WebCore {
35
36class CryptoAlgorithmAesCtrParams final : public CryptoAlgorithmParameters {
37public:
38 BufferSource counter;
39 size_t length;
40
41 Class parametersClass() const final { return Class::AesCtrParams; }
42
43 const Vector<uint8_t>& counterVector() const
44 {
45 if (!m_counterVector.isEmpty() || !counter.length())
46 return m_counterVector;
47
48 m_counterVector.append(counter.data(), counter.length());
49 return m_counterVector;
50 }
51
52 CryptoAlgorithmAesCtrParams isolatedCopy() const
53 {
54 CryptoAlgorithmAesCtrParams result;
55 result.identifier = identifier;
56 result.m_counterVector = counterVector();
57 result.length = length;
58
59 return result;
60 }
61
62private:
63 mutable Vector<uint8_t> m_counterVector;
64};
65
66} // namespace WebCore
67
68SPECIALIZE_TYPE_TRAITS_CRYPTO_ALGORITHM_PARAMETERS(AesCtrParams)
69
70#endif // ENABLE(WEB_CRYPTO)
71