Java tutorial
//package com.java2s; /** * Copyright (C) 2011 Whisper Systems * Copyright (C) 2013 Open Whisper Systems * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ import java.security.GeneralSecurityException; import javax.crypto.SecretKey; import javax.crypto.SecretKeyFactory; import javax.crypto.spec.PBEKeySpec; public class Main { private static SecretKey getKeyFromPassphrase(String passphrase, byte[] salt, int iterations) throws GeneralSecurityException { PBEKeySpec keyspec = new PBEKeySpec(passphrase.toCharArray(), salt, iterations); SecretKeyFactory skf = SecretKeyFactory.getInstance("PBEWITHSHA1AND128BITAES-CBC-BC"); return skf.generateSecret(keyspec); } }