001    /*
002     * Copyright 2006-2008 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     */
016    package org.kuali.rice.kns.web.format;
017    
018    import java.security.GeneralSecurityException;
019    
020    import org.kuali.rice.kns.service.KNSServiceLocator;
021    
022    /**
023     * This formatter calls the encryption service to encrypt/decrypt values.
024     * 
025     * 
026     */
027    public class EncryptionFormatter extends Formatter {
028        private static final long serialVersionUID = -4109390572922205211L;
029    
030        protected Object convertToObject(String target) {
031            if (Formatter.isEmptyValue(target))
032                return null;
033    
034            String decryptedValue = null;
035            try {
036                decryptedValue = KNSServiceLocator.getEncryptionService().decrypt(target);
037            }
038            catch (GeneralSecurityException e) {
039                throw new RuntimeException("Unable to decrypt value.");
040            }
041    
042            return decryptedValue;
043        }
044    
045        public Object format(Object target) {
046            String encryptedValue = null;
047            try {
048                encryptedValue = KNSServiceLocator.getEncryptionService().encrypt(target);
049            }
050            catch (GeneralSecurityException e) {
051                throw new RuntimeException("Unable to encrypt secure field.");
052            }
053    
054            return encryptedValue;
055        }
056    }