001    /**
002     * Copyright (c) 2000-2013 Liferay, Inc. All rights reserved.
003     *
004     * The contents of this file are subject to the terms of the Liferay Enterprise
005     * Subscription License ("License"). You may not use this file except in
006     * compliance with the License. You can obtain a copy of the License by
007     * contacting Liferay, Inc. See the License for the specific language governing
008     * permissions and limitations under the License, including but not limited to
009     * distribution rights of the Software.
010     *
011     *
012     *
013     */
014    
015    package com.liferay.portal.security.pwd;
016    
017    import com.liferay.portal.PwdEncryptorException;
018    import com.liferay.portal.kernel.util.Validator;
019    
020    /**
021     * @author Michael C. Han
022     */
023    public abstract class BasePasswordEncryptor implements PasswordEncryptor {
024    
025            @Override
026            public String encrypt(
027                            String algorithm, String plainTextPassword,
028                            String encryptedPassword)
029                    throws PwdEncryptorException {
030    
031                    if (Validator.isNull(plainTextPassword)) {
032                            throw new PwdEncryptorException("Unable to encrypt blank password");
033                    }
034    
035                    return doEncrypt(algorithm, plainTextPassword, encryptedPassword);
036            }
037    
038            protected abstract String doEncrypt(
039                            String algorithm, String plainTextPassword,
040                            String encryptedPassword)
041                    throws PwdEncryptorException;
042    
043    }