/*
 * Copyright 2005-2010 the original author or authors.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.wamblee.security.authentication;

/**
 * Utility class that encapsulates a message digest method.
 */
public interface MessageDigester {
    /**
     * Computes a message digest for a value and encodes it in some way.
     * 
     * @param aValue
     *            Value to compute digest for.
     * 
     * @return Encoded digest.
     */
    String hash(String aValue);
}