/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.apache.commons.vfs2.util;

/**
 * @since 2.0
 */
public interface Cryptor
{
    /**
     * Encrypt the plain text password.
     * @param plainKey The password.
     * @return The encrypted password String.
     * @throws Exception If an error occurs.
     */
    String encrypt(String plainKey) throws Exception;

    /**
     * Decrypts the password.
     * @param encryptedKey the encrypted password.
     * @return The plain text password.
     * @throws Exception If an error occurs.
     */
    String decrypt(String encryptedKey) throws Exception;
}