gov.nih.nci.security.util.StringEncrypter.java Source code

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Here is the source code for gov.nih.nci.security.util.StringEncrypter.java

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/*L
 *  Copyright Ekagra Software Technologies Ltd.
 *  Copyright SAIC, SAIC-Frederick
 *
 *  Distributed under the OSI-approved BSD 3-Clause License.
 *  See http://ncip.github.com/common-security-module/LICENSE.txt for details.
 */

package gov.nih.nci.security.util;

import org.apache.commons.configuration.DataConfiguration;

import gov.nih.nci.security.constants.Constants;
import gov.nih.nci.security.exceptions.CSConfigurationException;

public class StringEncrypter {

    Encryption encryption = null;

    public StringEncrypter() throws EncryptionException {
        this(Constants.AES_ENCRYPTION);
    }

    public StringEncrypter(String encryptionScheme) throws EncryptionException {
        if (encryptionScheme != null && encryptionScheme.equals(Constants.DES_ENCRYPTION))
            encryption = new DESEncryption();
        else {
            DataConfiguration config = null;
            try {
                config = ConfigurationHelper.getConfiguration();
            } catch (CSConfigurationException e) {
                e.printStackTrace();
            }
            encryption = new AESEncryption(config.getString("AES_ENCRYPTION_KEY"),
                    Boolean.parseBoolean(config.getString("MD5_HASH_KEY")));
        }
    }

    public synchronized String encrypt(String unencryptedString) throws EncryptionException {
        return encryption.encrypt(unencryptedString);
    }

    public synchronized String decrypt(String encryptedString) throws EncryptionException {
        return encryption.decrypt(encryptedString);
    }

    public static class EncryptionException extends Exception {
        public EncryptionException(Throwable t) {
            super(t);
        }
    }
}