1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
|
// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_WEBCRYPTO_ALGORITHM_DISPATCH_H_
#define COMPONENTS_WEBCRYPTO_ALGORITHM_DISPATCH_H_
#include <stdint.h>
#include <vector>
#include "base/memory/scoped_ptr.h"
#include "third_party/WebKit/public/platform/WebCrypto.h"
namespace webcrypto {
class AlgorithmImplementation;
class CryptoData;
class GenerateKeyResult;
class Status;
// These functions provide an entry point for synchronous webcrypto operations.
//
// The inputs to these methods come from Blink, and hence the validations done
// by Blink can be assumed:
//
// * The algorithm parameters are consistent with the algorithm
// * The key contains the required usage for the operation
Status Encrypt(const blink::WebCryptoAlgorithm& algorithm,
const blink::WebCryptoKey& key,
const CryptoData& data,
std::vector<uint8_t>* buffer);
Status Decrypt(const blink::WebCryptoAlgorithm& algorithm,
const blink::WebCryptoKey& key,
const CryptoData& data,
std::vector<uint8_t>* buffer);
Status Digest(const blink::WebCryptoAlgorithm& algorithm,
const CryptoData& data,
std::vector<uint8_t>* buffer);
Status GenerateKey(const blink::WebCryptoAlgorithm& algorithm,
bool extractable,
blink::WebCryptoKeyUsageMask usages,
GenerateKeyResult* result);
Status ImportKey(blink::WebCryptoKeyFormat format,
const CryptoData& key_data,
const blink::WebCryptoAlgorithm& algorithm,
bool extractable,
blink::WebCryptoKeyUsageMask usages,
blink::WebCryptoKey* key);
Status ExportKey(blink::WebCryptoKeyFormat format,
const blink::WebCryptoKey& key,
std::vector<uint8_t>* buffer);
Status Sign(const blink::WebCryptoAlgorithm& algorithm,
const blink::WebCryptoKey& key,
const CryptoData& data,
std::vector<uint8_t>* buffer);
Status Verify(const blink::WebCryptoAlgorithm& algorithm,
const blink::WebCryptoKey& key,
const CryptoData& signature,
const CryptoData& data,
bool* signature_match);
Status WrapKey(blink::WebCryptoKeyFormat format,
const blink::WebCryptoKey& key_to_wrap,
const blink::WebCryptoKey& wrapping_key,
const blink::WebCryptoAlgorithm& wrapping_algorithm,
std::vector<uint8_t>* buffer);
Status UnwrapKey(blink::WebCryptoKeyFormat format,
const CryptoData& wrapped_key_data,
const blink::WebCryptoKey& wrapping_key,
const blink::WebCryptoAlgorithm& wrapping_algorithm,
const blink::WebCryptoAlgorithm& algorithm,
bool extractable,
blink::WebCryptoKeyUsageMask usages,
blink::WebCryptoKey* key);
Status DeriveBits(const blink::WebCryptoAlgorithm& algorithm,
const blink::WebCryptoKey& base_key,
unsigned int length_bits,
std::vector<uint8_t>* derived_bytes);
// Derives a key by calling the underlying deriveBits/getKeyLength/importKey
// operations.
//
// Note that whereas the WebCrypto spec uses a single "derivedKeyType"
// AlgorithmIdentifier in its specification of deriveKey(), here two separate
// AlgorithmIdentifiers are used:
//
// * |import_algorithm| -- The parameters required by the derived key's
// "importKey" operation.
//
// * |key_length_algorithm| -- The parameters required by the derived key's
// "get key length" operation.
//
// WebCryptoAlgorithm is not a flexible type like AlgorithmIdentifier (it cannot
// be easily re-interpreted as a different parameter type).
//
// Therefore being provided with separate parameter types for the import
// parameters and the key length parameters simplifies passing the right
// parameters onto ImportKey() and GetKeyLength() respectively.
Status DeriveKey(const blink::WebCryptoAlgorithm& algorithm,
const blink::WebCryptoKey& base_key,
const blink::WebCryptoAlgorithm& import_algorithm,
const blink::WebCryptoAlgorithm& key_length_algorithm,
bool extractable,
blink::WebCryptoKeyUsageMask usages,
blink::WebCryptoKey* derived_key);
scoped_ptr<blink::WebCryptoDigestor> CreateDigestor(
blink::WebCryptoAlgorithmId algorithm);
bool SerializeKeyForClone(const blink::WebCryptoKey& key,
blink::WebVector<uint8_t>* key_data);
bool DeserializeKeyForClone(const blink::WebCryptoKeyAlgorithm& algorithm,
blink::WebCryptoKeyType type,
bool extractable,
blink::WebCryptoKeyUsageMask usages,
const CryptoData& key_data,
blink::WebCryptoKey* key);
} // namespace webcrypto
#endif // COMPONENTS_WEBCRYPTO_ALGORITHM_DISPATCH_H_
|
