simplesigningutility.java

一个完整的XACML工程,学习XACML技术的好例子!

/*
* Copyright (c) 2000-2005, University of Salford
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without 
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this 
* list of conditions and the following disclaimer.
* 
* 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. 
*
* Neither the name of the University of Salford nor the names of its 
* contributors may be used to endorse or promote products derived from this 
* software without specific prior written permission. 
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
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*/

package issrg.pa.extensions;

import issrg.pa.ACCreationException;
import issrg.security.SecurityException;

/**
 * This is a Signing Utility that uses files with PKCS#8 encoded private keys to sign and BER-encoded
 * X.509 PKCs to get the signer information.
 */

public class SimpleSigningUtility extends issrg.pa.SigningUtility {

  private issrg.security.DefaultSecurity ds;

  public SimpleSigningUtility() {
    try{
      ds=new issrg.security.DefaultSecurity();
    }catch(SecurityException se){}
  }

  public String getSigningAlgorithmID() throws ACCreationException {
    if (!isLoggedIn()){
      throw new ACCreationException("User is not logged in yet");
    }

    try{
      return getVerificationCertificate().getSigAlgOID();
    }catch(issrg.security.SecurityException se){
      throw new ACCreationException("Failed to obtain Signature Algorithm ID", se);
    }
  }

  public void login(java.awt.Frame f, java.util.Map m) throws issrg.security.SecurityException {
    ds.login(f, m);
  }

  public void logout(java.awt.Frame f, java.util.Map m){
    ds.logout(f, m);
  }

  public byte [] sign(byte [] b) throws issrg.security.SecurityException {
    return ds.sign(b);
  }

  public java.security.cert.X509Certificate getVerificationCertificate() throws issrg.security.SecurityException {
    return ds.getVerificationCertificate();
  }

  public boolean isLoggedIn(){
    return ds.isLoggedIn();
  }
}