LocalVerifier.java

/**
 * Copyright 2005-2014 Restlet
 * 
 * The contents of this file are subject to the terms of one of the following
 * open source licenses: Apache 2.0 or or EPL 1.0 (the "Licenses"). You can
 * select the license that you prefer but you may not use this file except in
 * compliance with one of these Licenses.
 * 
 * You can obtain a copy of the Apache 2.0 license at
 * http://www.opensource.org/licenses/apache-2.0
 * 
 * You can obtain a copy of the EPL 1.0 license at
 * http://www.opensource.org/licenses/eclipse-1.0
 * 
 * See the Licenses for the specific language governing permissions and
 * limitations under the Licenses.
 * 
 * Alternatively, you can obtain a royalty free commercial license with less
 * limitations, transferable or non-transferable, directly at
 * http://restlet.com/products/restlet-framework
 * 
 * Restlet is a registered trademark of Restlet S.A.S.
 */

package org.restlet.security;

/**
 * Verifier that can locally retrieve the secrets. This verifier assumes that
 * the secret associated to an identifier can be retrieved, which isn't always
 * possible or even desirable.
 * 
 * @author Jerome Louvel
 */
public abstract class LocalVerifier extends SecretVerifier {

    /**
     * Returns the local secret associated to a given identifier.
     * 
     * @param identifier
     *            The identifier to lookup.
     * @return The secret associated to the identifier or null.
     */
    public abstract char[] getLocalSecret(String identifier);

    @Override
    public int verify(String identifier, char[] secret) {
        return compare(secret, getLocalSecret(identifier)) ? RESULT_VALID
                : RESULT_INVALID;
    }

}