hexadecimalencoder.cc revision 7c9978567a202d6aa98beac5da5e1b3b34792862 
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// A SecretEncoder implementation that uses hexadecimal encoding. This encoding
16// has 2 symbols per byte since each hex character uses 4 bits.
17
18#include "polo/encoding/hexadecimalencoder.h"
19
20#include <string>
21#include <vector>
22#include "polo/util/poloutil.h"
23
24namespace polo {
25namespace encoding {
26
27std::string HexadecimalEncoder::EncodeToString(
28    const std::vector<uint8_t>& secret) const {
29  return polo::util::PoloUtil::BytesToHexString(&secret[0], secret.size());
30}
31
32std::vector<uint8_t> HexadecimalEncoder::DecodeToBytes(
33    const std::string& secret) const {
34  uint8_t* bytes;
35  size_t length = polo::util::PoloUtil::HexStringToBytes(secret, bytes);
36  std::vector<uint8_t> decoded(bytes, bytes + length);
37  delete[] bytes;
38
39  return decoded;
40}
41
42size_t HexadecimalEncoder::symbols_per_byte() const {
43  return HEX_SYMBOLS_PER_BYTE;
44}
45
46}  // namespace encoding
47}  // namespace polo
48