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 17 package com.google.polo.encoding; 18 19 /** 20 * Methods that must be implemented by a secret encoding scheme. 21 */ 22 public interface SecretEncoder { 23 24 /** 25 * Converts the byte representation of a secret to the appropriate string 26 * value in this encoding. 27 */ 28 public String encodeToString(byte[] secretBytes); 29 30 /** 31 * Converts the encoded value of a secret to the raw byte representation. 32 */ 33 public byte[] decodeToBytes(String encodedString); 34 35 /** 36 * Returns the number of symbols produced per each byte of raw input. 37 */ 38 public int symbolsPerByte(); 39 40 } 41
