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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 // Utility class for calculating the HMAC for a given message. We currently | 5 // Utility class for calculating the HMAC for a given message. We currently |
6 // only support SHA1 for the hash algorithm, but this can be extended easily. | 6 // only support SHA1 for the hash algorithm, but this can be extended easily. |
7 | 7 |
8 #ifndef CRYPTO_HMAC_H_ | 8 #ifndef CRYPTO_HMAC_H_ |
9 #define CRYPTO_HMAC_H_ | 9 #define CRYPTO_HMAC_H_ |
10 #pragma once | 10 #pragma once |
11 | 11 |
12 #include "base/basictypes.h" | 12 #include "base/basictypes.h" |
13 #include "base/compiler_specific.h" | 13 #include "base/compiler_specific.h" |
14 #include "base/memory/scoped_ptr.h" | 14 #include "base/memory/scoped_ptr.h" |
15 #include "base/string_piece.h" | 15 #include "base/string_piece.h" |
16 #include "crypto/crypto_api.h" | 16 #include "crypto/crypto_export.h" |
17 | 17 |
18 namespace crypto { | 18 namespace crypto { |
19 | 19 |
20 // Simplify the interface and reduce includes by abstracting out the internals. | 20 // Simplify the interface and reduce includes by abstracting out the internals. |
21 struct HMACPlatformData; | 21 struct HMACPlatformData; |
22 | 22 |
23 class CRYPTO_API HMAC { | 23 class CRYPTO_EXPORT HMAC { |
24 public: | 24 public: |
25 // The set of supported hash functions. Extend as required. | 25 // The set of supported hash functions. Extend as required. |
26 enum HashAlgorithm { | 26 enum HashAlgorithm { |
27 SHA1, | 27 SHA1, |
28 SHA256, | 28 SHA256, |
29 }; | 29 }; |
30 | 30 |
31 explicit HMAC(HashAlgorithm hash_alg); | 31 explicit HMAC(HashAlgorithm hash_alg); |
32 ~HMAC(); | 32 ~HMAC(); |
33 | 33 |
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74 private: | 74 private: |
75 HashAlgorithm hash_alg_; | 75 HashAlgorithm hash_alg_; |
76 scoped_ptr<HMACPlatformData> plat_; | 76 scoped_ptr<HMACPlatformData> plat_; |
77 | 77 |
78 DISALLOW_COPY_AND_ASSIGN(HMAC); | 78 DISALLOW_COPY_AND_ASSIGN(HMAC); |
79 }; | 79 }; |
80 | 80 |
81 } // namespace crypto | 81 } // namespace crypto |
82 | 82 |
83 #endif // CRYPTO_HMAC_H_ | 83 #endif // CRYPTO_HMAC_H_ |
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