1/*
2 * Copyright (C) 2013 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#include "config.h"
27#include "CryptoKey.h"
28
29#if ENABLE(SUBTLE_CRYPTO)
30
31#include "CryptoAlgorithmDescriptionBuilder.h"
32#include "CryptoAlgorithmRegistry.h"
33#include <wtf/CryptographicallyRandomNumber.h>
34#include <wtf/text/WTFString.h>
35
36namespace WebCore {
37
38CryptoKey::CryptoKey(CryptoAlgorithmIdentifier algorithm, CryptoKeyType type, bool extractable, CryptoKeyUsage usages)
39    : m_algorithm(algorithm)
40    , m_type(type)
41    , m_extractable(extractable)
42    , m_usages(usages)
43{
44}
45
46CryptoKey::~CryptoKey()
47{
48}
49
50String CryptoKey::type() const
51{
52    switch (m_type) {
53    case CryptoKeyType::Secret:
54        return ASCIILiteral("secret");
55    case CryptoKeyType::Public:
56        return ASCIILiteral("public");
57    case CryptoKeyType::Private:
58        return ASCIILiteral("private");
59    }
60}
61
62void CryptoKey::buildAlgorithmDescription(CryptoAlgorithmDescriptionBuilder& builder) const
63{
64    builder.add("name", CryptoAlgorithmRegistry::shared().nameForIdentifier(m_algorithm));
65    // Subclasses will add other keys.
66}
67
68Vector<String> CryptoKey::usages() const
69{
70    // The result is ordered alphabetically.
71    Vector<String> result;
72    if (m_usages & CryptoKeyUsageDecrypt)
73        result.append(ASCIILiteral("decrypt"));
74    if (m_usages & CryptoKeyUsageDeriveBits)
75        result.append(ASCIILiteral("deriveBits"));
76    if (m_usages & CryptoKeyUsageDeriveKey)
77        result.append(ASCIILiteral("deriveKey"));
78    if (m_usages & CryptoKeyUsageEncrypt)
79        result.append(ASCIILiteral("encrypt"));
80    if (m_usages & CryptoKeyUsageSign)
81        result.append(ASCIILiteral("sign"));
82    if (m_usages & CryptoKeyUsageUnwrapKey)
83        result.append(ASCIILiteral("unwrapKey"));
84    if (m_usages & CryptoKeyUsageVerify)
85        result.append(ASCIILiteral("verify"));
86    if (m_usages & CryptoKeyUsageWrapKey)
87        result.append(ASCIILiteral("wrapKey"));
88
89    return result;
90}
91
92#if !OS(DARWIN) || PLATFORM(EFL) || PLATFORM(GTK)
93Vector<uint8_t> CryptoKey::randomData(size_t size)
94{
95    Vector<uint8_t> result(size);
96    cryptographicallyRandomValues(result.data(), result.size());
97    return result;
98}
99#endif
100} // namespace WebCore
101
102#endif // ENABLE(SUBTLE_CRYPTO)
103