/*
 * The Apache Software License, Version 1.1
 *
 *
 * Copyright (c) 1999 The Apache Software Foundation.  All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
 *
 * 4. The names "<WebSig>" and "Apache Software Foundation" must
 *    not be used to endorse or promote products derived from this
 *    software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache",
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 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation and was
 * originally based on software copyright (c) 2001, Institute for
 * Data Communications Systems, <http://www.nue.et-inf.uni-siegen.de/>.
 * The development of this software was partly funded by the European
 * Commission in the <WebSig> project in the ISIS Programme.
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 * <http://www.apache.org/>.
 */
package org.apache.xml.security.keys;



import java.io.PrintStream;
import java.security.NoSuchAlgorithmException;
import java.security.PublicKey;
import java.security.spec.InvalidKeySpecException;

import org.apache.xml.security.exceptions.XMLSecurityException;
import org.apache.xml.security.keys.content.KeyName;
import org.apache.xml.security.keys.content.KeyValue;
import org.apache.xml.security.keys.content.MgmtData;
import org.apache.xml.security.keys.content.X509Data;


/**
 * Utility class for for <CODE>org.apache.xml.security.keys</CODE> package.
 *
 * @author $Author$
 */
public class KeyUtils {

   private KeyUtils() {
      // no instantiation
   }

   /**
    * Method prinoutKeyInfo
    *
    * @param ki
    * @param os
    * @throws InvalidKeySpecException
    * @throws NoSuchAlgorithmException
    * @throws XMLSecurityException
    */
   public static void prinoutKeyInfo(KeyInfo ki, PrintStream os)
           throws NoSuchAlgorithmException, InvalidKeySpecException,
                  XMLSecurityException {

      for (int i = 0; i < ki.lengthKeyName(); i++) {
         KeyName x = ki.itemKeyName(i);

         os.println("KeyName(" + i + ")=\"" + x.getKeyName() + "\"");
      }

      for (int i = 0; i < ki.lengthKeyValue(); i++) {
         KeyValue x = ki.itemKeyValue(i);
         PublicKey pk = x.getPublicKey();

         os.println("KeyValue Nr. " + i);
         os.println(pk);
      }

      for (int i = 0; i < ki.lengthMgmtData(); i++) {
         MgmtData x = ki.itemMgmtData(i);

         os.println("MgmtData(" + i + ")=\"" + x.getMgmtData() + "\"");
      }

      for (int i = 0; i < ki.lengthX509Data(); i++) {
         X509Data x = ki.itemX509Data(i);

         os.println("X509Data(" + i + ")=\"" + (x.containsCertificate()
                                                ? "Certificate "
                                                : "") + (x
                                                   .containsIssuerSerial()
                                                         ? "IssuerSerial "
                                                         : "") + "\"");
      }
   }
}