com.ocpsoft.rewrite.servlet.config.encodequery.ChecksumStrategy Maven / Gradle / Ivy

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/*
 * Copyright 2011 Lincoln Baxter, III
 * 
 * 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 com.ocpsoft.rewrite.servlet.config.encodequery;

/**
 * @author Lincoln Baxter, III
 * 
 */
public interface ChecksumStrategy
{
   /**
    * Return true if the given token contains a valid checksum.
    */
   boolean checksumValid(String token);

   /**
    * Return the given token with an additional added checksum.
    */
   String embedChecksum(String token);

   /**
    * Extract the token from the given string with checksum.
    */
   String removeChecksum(String token);

}