1 /*
2 * Copyright (C) 2014 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 are
6 * met:
7 *
8 * * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
13 * distribution.
14 * * Neither the name of Google Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31 #include "config.h"
32 #include "modules/crypto/KeyAlgorithm.h"
33
34 #include "modules/crypto/AesKeyAlgorithm.h"
35 #include "modules/crypto/HmacKeyAlgorithm.h"
36 #include "modules/crypto/NormalizeAlgorithm.h"
37 #include "modules/crypto/RsaHashedKeyAlgorithm.h"
38 #include "modules/crypto/RsaKeyAlgorithm.h"
39 #include "public/platform/WebCryptoAlgorithm.h"
40 #include "wtf/text/WTFString.h"
41
42 namespace WebCore {
43
~KeyAlgorithm()44 KeyAlgorithm::~KeyAlgorithm()
45 {
46 }
47
create(const blink::WebCryptoKeyAlgorithm & algorithm)48 KeyAlgorithm* KeyAlgorithm::create(const blink::WebCryptoKeyAlgorithm& algorithm)
49 {
50 switch (algorithm.paramsType()) {
51 case blink::WebCryptoKeyAlgorithmParamsTypeNone:
52 return new KeyAlgorithm(algorithm);
53 case blink::WebCryptoKeyAlgorithmParamsTypeAes:
54 return AesKeyAlgorithm::create(algorithm);
55 case blink::WebCryptoKeyAlgorithmParamsTypeHmac:
56 return HmacKeyAlgorithm::create(algorithm);
57 case blink::WebCryptoKeyAlgorithmParamsTypeRsaHashed:
58 return RsaHashedKeyAlgorithm::create(algorithm);
59 }
60 ASSERT_NOT_REACHED();
61 return 0;
62 }
63
createHash(const blink::WebCryptoAlgorithm & hash)64 KeyAlgorithm* KeyAlgorithm::createHash(const blink::WebCryptoAlgorithm& hash)
65 {
66 // Assume that none of the hash algorithms have any parameters.
67 ASSERT(hash.paramsType() == blink::WebCryptoAlgorithmParamsTypeNone);
68 return new KeyAlgorithm(blink::WebCryptoKeyAlgorithm(hash.id(), nullptr));
69 }
70
KeyAlgorithm(const blink::WebCryptoKeyAlgorithm & algorithm)71 KeyAlgorithm::KeyAlgorithm(const blink::WebCryptoKeyAlgorithm& algorithm)
72 : m_algorithm(algorithm)
73 {
74 ScriptWrappable::init(this);
75 }
76
name()77 String KeyAlgorithm::name()
78 {
79 const blink::WebCryptoAlgorithmInfo* info = blink::WebCryptoAlgorithm::lookupAlgorithmInfo(m_algorithm.id());
80 return info->name;
81 }
82
isAesKeyAlgorithm() const83 bool KeyAlgorithm::isAesKeyAlgorithm() const
84 {
85 return m_algorithm.paramsType() == blink::WebCryptoKeyAlgorithmParamsTypeAes;
86 }
87
isHmacKeyAlgorithm() const88 bool KeyAlgorithm::isHmacKeyAlgorithm() const
89 {
90 return m_algorithm.paramsType() == blink::WebCryptoKeyAlgorithmParamsTypeHmac;
91 }
92
isRsaHashedKeyAlgorithm() const93 bool KeyAlgorithm::isRsaHashedKeyAlgorithm() const
94 {
95 return m_algorithm.paramsType() == blink::WebCryptoKeyAlgorithmParamsTypeRsaHashed;
96 }
97
trace(Visitor *)98 void KeyAlgorithm::trace(Visitor*)
99 {
100 }
101
102 } // namespace WebCore
103