Here you can find the source of generateRSAKeyPair()
public static KeyPair generateRSAKeyPair()
//package com.java2s; /*/*from ww w . j av a 2 s.c o m*/ * Copyright 2011-2015 B2i Healthcare Pte Ltd, http://b2i.sg * * 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.KeyPair; import java.security.KeyPairGenerator; import java.security.NoSuchAlgorithmException; public class Main { public final static String RSA_ALGORITHM_KEY = "RSA"; public static KeyPair generateRSAKeyPair() { try { KeyPairGenerator kpg = KeyPairGenerator.getInstance(RSA_ALGORITHM_KEY); kpg.initialize(2048); KeyPair keyPair = kpg.genKeyPair(); return keyPair; } catch (NoSuchAlgorithmException e) { //should not happen throw new RuntimeException("Unknown encryption algorithm provided: " + RSA_ALGORITHM_KEY, e); } } }