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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 BASE_HMAC_H_ | 8 #ifndef CRYPTO_HMAC_H_ |
9 #define BASE_HMAC_H_ | 9 #define CRYPTO_HMAC_H_ |
10 #pragma once | 10 #pragma once |
11 | 11 |
12 #include <string> | 12 #include <string> |
13 | 13 |
14 #include "base/base_api.h" | |
15 #include "base/basictypes.h" | 14 #include "base/basictypes.h" |
16 #include "base/memory/scoped_ptr.h" | 15 #include "base/memory/scoped_ptr.h" |
17 | 16 |
18 namespace base { | 17 namespace crypto { |
19 | 18 |
20 // Simplify the interface and reduce includes by abstracting out the internals. | 19 // Simplify the interface and reduce includes by abstracting out the internals. |
21 struct HMACPlatformData; | 20 struct HMACPlatformData; |
22 | 21 |
23 class BASE_API HMAC { | 22 class HMAC { |
24 public: | 23 public: |
25 // The set of supported hash functions. Extend as required. | 24 // The set of supported hash functions. Extend as required. |
26 enum HashAlgorithm { | 25 enum HashAlgorithm { |
27 SHA1, | 26 SHA1, |
28 SHA256, | 27 SHA256, |
29 }; | 28 }; |
30 | 29 |
31 explicit HMAC(HashAlgorithm hash_alg); | 30 explicit HMAC(HashAlgorithm hash_alg); |
32 ~HMAC(); | 31 ~HMAC(); |
33 | 32 |
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49 | 48 |
50 // TODO(albertb): Add a Verify method. | 49 // TODO(albertb): Add a Verify method. |
51 | 50 |
52 private: | 51 private: |
53 HashAlgorithm hash_alg_; | 52 HashAlgorithm hash_alg_; |
54 scoped_ptr<HMACPlatformData> plat_; | 53 scoped_ptr<HMACPlatformData> plat_; |
55 | 54 |
56 DISALLOW_COPY_AND_ASSIGN(HMAC); | 55 DISALLOW_COPY_AND_ASSIGN(HMAC); |
57 }; | 56 }; |
58 | 57 |
59 } // namespace base | 58 } // namespace crypto |
60 | 59 |
61 #endif // BASE_HMAC_H_ | 60 #endif // CRYPTO_HMAC_H_ |
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