| // Copyright 2012 Google Inc. All Rights Reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #ifndef POLO_ENCODING_HEXADECIMALENCODER_H_ |
| #define POLO_ENCODING_HEXADECIMALENCODER_H_ |
| |
| #include <string> |
| #include <vector> |
| |
| #include "polo/encoding/secretencoder.h" |
| |
| namespace polo { |
| namespace encoding { |
| |
| // Encodes and decodes secret challenges as hexadecimal strings. |
| class HexadecimalEncoder : public SecretEncoder { |
| public: |
| // @override |
| virtual std::string EncodeToString( |
| const std::vector<uint8_t>& secret) const; |
| |
| // @override |
| virtual std::vector<uint8_t> DecodeToBytes( |
| const std::string& secret) const; |
| |
| // @override |
| virtual size_t symbols_per_byte() const;\ |
| private: |
| enum { |
| // Hex encoding has 2 symbols per byte since each hex character uses 4 bits. |
| HEX_SYMBOLS_PER_BYTE = 2 |
| }; |
| }; |
| |
| } // namespace encoding |
| } // namespace polo |
| |
| #endif // POLO_ENCODING_HEXADECIMALENCODER_H_ |