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// 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_
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