1/* 2 * Licensed to the Apache Software Foundation (ASF) under one or more 3 * contributor license agreements. See the NOTICE file distributed with 4 * this work for additional information regarding copyright ownership. 5 * The ASF licenses this file to You under the Apache License, Version 2.0 6 * (the "License"); you may not use this file except in compliance with 7 * the License. You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 18package java.security; 19 20import java.security.spec.AlgorithmParameterSpec; 21 22/** 23 * {@code KeyPairGeneratorSpi} is the Service Provider Interface (SPI) 24 * definition for {@link KeyPairGenerator}. 25 * 26 * @see KeyPairGenerator 27 */ 28public abstract class KeyPairGeneratorSpi { 29 /** 30 * Constructs a new instance of {@code KeyPairGeneratorSpi}. 31 */ 32 public KeyPairGeneratorSpi() { 33 } 34 35 /** 36 * Computes and returns a new unique {@code KeyPair} each time this method 37 * is called. 38 * 39 * @return a new unique {@code KeyPair} each time this method is called. 40 */ 41 public abstract KeyPair generateKeyPair(); 42 43 /** 44 * Initializes this {@code KeyPairGeneratorSpi} with the given key size and 45 * the given {@code SecureRandom}. The default parameter set will be used. 46 * 47 * @param keysize 48 * the key size (number of bits). 49 * @param random 50 * the source of randomness. 51 */ 52 public abstract void initialize(int keysize, SecureRandom random); 53 54 /** 55 * Initializes this {@code KeyPairGeneratorSpi} with the given {@code 56 * AlgorithmParameterSpec} and the given {@code SecureRandom}. 57 * 58 * @param params 59 * the parameters to use. 60 * @param random 61 * the source of randomness. 62 * @throws InvalidAlgorithmParameterException 63 * if the specified parameters are not supported. 64 */ 65 public void initialize(AlgorithmParameterSpec params, SecureRandom random) 66 throws InvalidAlgorithmParameterException { 67 throw new UnsupportedOperationException(); 68 } 69} 70