Jerome Poichet | 7c99785 | 2014-05-20 10:50:05 -0700 | [diff] [blame^] | 1 | // Copyright 2012 Google Inc. All Rights Reserved. |
| 2 | // |
| 3 | // Licensed under the Apache License, Version 2.0 (the "License"); |
| 4 | // you may not use this file except in compliance with the License. |
| 5 | // You may obtain a copy of the License at |
| 6 | // |
| 7 | // http://www.apache.org/licenses/LICENSE-2.0 |
| 8 | // |
| 9 | // Unless required by applicable law or agreed to in writing, software |
| 10 | // distributed under the License is distributed on an "AS IS" BASIS, |
| 11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 12 | // See the License for the specific language governing permissions and |
| 13 | // limitations under the License. |
| 14 | |
| 15 | #ifndef POLO_ENCODING_HEXADECIMALENCODER_H_ |
| 16 | #define POLO_ENCODING_HEXADECIMALENCODER_H_ |
| 17 | |
| 18 | #include <string> |
| 19 | #include <vector> |
| 20 | |
| 21 | #include "polo/encoding/secretencoder.h" |
| 22 | |
| 23 | namespace polo { |
| 24 | namespace encoding { |
| 25 | |
| 26 | // Encodes and decodes secret challenges as hexadecimal strings. |
| 27 | class HexadecimalEncoder : public SecretEncoder { |
| 28 | public: |
| 29 | // @override |
| 30 | virtual std::string EncodeToString( |
| 31 | const std::vector<uint8_t>& secret) const; |
| 32 | |
| 33 | // @override |
| 34 | virtual std::vector<uint8_t> DecodeToBytes( |
| 35 | const std::string& secret) const; |
| 36 | |
| 37 | // @override |
| 38 | virtual size_t symbols_per_byte() const;\ |
| 39 | private: |
| 40 | enum { |
| 41 | // Hex encoding has 2 symbols per byte since each hex character uses 4 bits. |
| 42 | HEX_SYMBOLS_PER_BYTE = 2 |
| 43 | }; |
| 44 | }; |
| 45 | |
| 46 | } // namespace encoding |
| 47 | } // namespace polo |
| 48 | |
| 49 | #endif // POLO_ENCODING_HEXADECIMALENCODER_H_ |