Here you can find the source of getKeyPair(KeyStore keyStore, String alias, String password)
public static KeyPair getKeyPair(KeyStore keyStore, String alias, String password) throws GeneralSecurityException
//package com.java2s; /******************************************************************************* * Copyright 2011 Clockwork/*from w ww. j av a 2 s . c o m*/ * * 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. ******************************************************************************/ import java.security.GeneralSecurityException; import java.security.Key; import java.security.KeyPair; import java.security.KeyStore; import java.security.PrivateKey; import java.security.PublicKey; import java.security.cert.Certificate; public class Main { public static KeyPair getKeyPair(KeyStore keyStore, String alias, String password) throws GeneralSecurityException { Key key = keyStore.getKey(alias, password.toCharArray()); if (key instanceof PrivateKey) { Certificate cert = keyStore.getCertificate(alias); PublicKey publicKey = cert.getPublicKey(); return new KeyPair(publicKey, (PrivateKey) key); } return null; } }