com.nervousync.commons.zip.crypto.Decryptor Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of nervousync-utils Show documentation

Java Utils collections, development by Nervousync Studio (NSYC)

The newest version!

/*
 * Licensed to the Nervousync Studio (NSYC) 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 com.nervousync.commons.zip.crypto;

import com.nervousync.exceptions.zip.ZipException;

/**
 * Zip file decryptor
 * @author Steven Wee	[email protected]
 * @version $Revision: 1.0 $ $Date: Dec 2, 2017 10:34:24 AM $
 */
public interface Decryptor {

	/**
	 * Decrypt given datas
	 * @param buff	datas
	 * @return processed data length
	 * @throws ZipException if decrypt engine was not initialized or data index out of size
	 */
	public int decryptData(byte[] buff) throws ZipException;

	/**
	 * Decrypt given datas which index from start and process data length was given
	 * @param buff		data buffer
	 * @param start		start index
	 * @param len		process length
	 * @return processed data length
	 * @throws ZipException if decrypt engine was not initialized or data index out of size
	 */
	public int decryptData(byte[] buff, int start, int len) throws ZipException;
}