/*

  * Copyright 2005-2007 The Kuali Foundation

  * 

  * 

  * Licensed under the Educational Community License, Version 2.0 (the "License");

  * you may not use this file except in compliance with the License.

  * You may obtain a copy of the License at

  * 

  * http://www.opensource.org/licenses/ecl2.php

  * 

  * Unless required by applicable law or agreed to in writing, software

  * distributed under the License is distributed on an "AS IS" BASIS,

  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

  * See the License for the specific language governing permissions and

  * limitations under the License.

  */

 package org.kuali.rice.ksb.security;

 import java.security.Signature;

 import java.security.cert.Certificate;

 import org.apache.commons.codec.binary.Base64;

 /**

  * An abstract implementation of a DigitalSigner which provides convienance utilities for storing a reference

  * to the Signature and also generating and encoding the actual digital signature.

  * 

  * @author Kuali Rice Team (rice.collab@kuali.org)

  */

 public abstract class AbstractDigitalSigner implements DigitalSigner {

         private Signature signature;

         public AbstractDigitalSigner(Signature signature) {

                 this.signature = signature;

         }

         public Signature getSignature() {

                 return this.signature;

         }

         protected byte[] getSignatureBytes() throws Exception {

                 return getSignature().sign();

         }

     protected String getEncodedSignature() throws Exception {

         return new String(Base64.encodeBase64(getSignatureBytes()), "UTF-8");

     }

     protected String getEncodedCertificate(Certificate certificate) throws Exception {

         return new String(Base64.encodeBase64(certificate.getEncoded()), "UTF-8");

     }

 }