1/*
2 * Copyright (C) 2009 Google Inc.  All rights reserved.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.google.polo.encoding;
18
19import com.google.polo.pairing.PoloUtil;
20
21/**
22 * A {@link SecretEncoder} for the hexadecimal secret encoding scheme.
23 */
24public class HexadecimalEncoder implements SecretEncoder {
25
26  public static final int SYMBOLS_PER_BYTE = 2;
27
28  public byte[] decodeToBytes(String encodedString) {
29    return PoloUtil.hexStringToBytes(encodedString);
30  }
31
32  public String encodeToString(byte[] secretBytes) {
33    return PoloUtil.bytesToHexString(secretBytes).toLowerCase();
34  }
35
36  public int symbolsPerByte() {
37    return SYMBOLS_PER_BYTE;
38  }
39
40}
41