Java tutorial
/******************************************************************************* * * Copyright (c) 2004-2009 Oracle Corporation. * * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html * * Contributors: * * Kohsuke Kawaguchi * * *******************************************************************************/ package hudson.util; import java.io.IOException; import java.io.UnsupportedEncodingException; import org.apache.commons.codec.binary.Base64; /** * Used when storing passwords in configuration files. * * <p> This doesn't make passwords secure, but it prevents unwanted exposure to * passwords, such as when one is grepping the file system or looking at config * files for trouble-shooting. * * @author Kohsuke Kawaguchi * @see Protector */ public class Scrambler { public static String scramble(String secret) { if (secret == null) { return null; } try { return new String(Base64.encodeBase64(secret.getBytes("UTF-8"))); } catch (UnsupportedEncodingException e) { throw new Error(e); // impossible } } public static String descramble(String scrambled) { if (scrambled == null) { return null; } try { return new String(Base64.decodeBase64(scrambled), "UTF-8"); } catch (IOException e) { return ""; // corrupted data. } } }