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| 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 |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #ifndef CRYPTO_SECURE_HASH_H_ |
| 6 #define CRYPTO_SECURE_HASH_H_ |
| 7 #pragma once |
| 8 |
| 9 #include "base/basictypes.h" |
| 10 |
| 11 namespace crypto { |
| 12 |
| 13 // A wrapper to calculate secure hashes incrementally, allowing to |
| 14 // be used when the full input is not known in advance. |
| 15 class SecureHash { |
| 16 public: |
| 17 enum Algorithm { |
| 18 SHA256, |
| 19 }; |
| 20 virtual ~SecureHash() {} |
| 21 |
| 22 static SecureHash* Create(Algorithm type); |
| 23 |
| 24 virtual void Update(const void* input, size_t len) = 0; |
| 25 virtual void Finish(void* output, size_t len) = 0; |
| 26 |
| 27 protected: |
| 28 SecureHash() {} |
| 29 |
| 30 private: |
| 31 DISALLOW_COPY_AND_ASSIGN(SecureHash); |
| 32 }; |
| 33 |
| 34 } // namespace crypto |
| 35 |
| 36 #endif // CRYPTO_SECURE_HASH_H_ |
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