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/* * Java Keystore JKS Export Private Key to PKCS8 format * Copyright � 2005 TJ (tj@tjworld.net) * * The GNU General Public License version 2 or later applies. * http://www.gnu.org/licenses/gpl.html * * Exports a private key from a (standard) Java JKS keystore file */ import java.io.FileInputStream; import java.security.KeyStore; import java.security.Key; /** * Exports a private key from a (standard) Java JKS keystore file * * @author tj */ public class ExportPrvKey { /** * Exports a private key from a (standard) Java JKS keystore file.</b> * Modified from code published at http://forum.java.sun.com/thread.jspa?threadID=154587&tstart=195 * by alef-sun.</b> * Invoke with:</b> * * java ExportPrvKey keystore password alias</b> * * @param args Command Line Arguments */ static public void main(String[] args) { if(args.length < 3) System.out.println("usage: java ExportPrvKey keystore password alias"); try { KeyStore ks = KeyStore.getInstance("jks"); ks.load(new FileInputStream(args[0]), args[1].toCharArray()); Key key = ks.getKey(args[2], args[1].toCharArray()); System.out.write(key.getEncoded()); } catch (Exception e) { e.printStackTrace(); } } }