001/**
002 * Copyright 2005-2017 The Kuali Foundation
003 *
004 * Licensed under the Educational Community License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 * http://www.opensource.org/licenses/ecl2.php
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016package org.kuali.rice.ksb.security;
017
018import java.security.Signature;
019import java.security.cert.Certificate;
020
021import org.apache.commons.codec.binary.Base64;
022
023/**
024 * An abstract implementation of a DigitalSigner which provides convienance utilities for storing a reference
025 * to the Signature and also generating and encoding the actual digital signature.
026 * 
027 * @author Kuali Rice Team (rice.collab@kuali.org)
028 */
029public abstract class AbstractDigitalSigner implements DigitalSigner {
030
031        private Signature signature;
032        
033        public AbstractDigitalSigner(Signature signature) {
034                this.signature = signature;
035        }
036        
037        public Signature getSignature() {
038                return this.signature;
039        }
040        
041        protected byte[] getSignatureBytes() throws Exception {
042                return getSignature().sign();
043        }
044        
045    protected String getEncodedSignature() throws Exception {
046        return new String(Base64.encodeBase64(getSignatureBytes()), "UTF-8");
047    }
048
049    protected String getEncodedCertificate(Certificate certificate) throws Exception {
050        return new String(Base64.encodeBase64(certificate.getEncoded()), "UTF-8");
051    }
052
053}