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/**
* ISymmetricKey
*
* An interface for symmetric encryption keys to implement.
* Copyright (c) 2007 Henri Torgemane
*
* See LICENSE.txt for full license information.
*/
package com.hurlant.crypto.symmetric
{
import flash.utils.ByteArray;
public interface ISymmetricKey
{
/**
* Returns the block size used by this particular encryption algorithm
*/
function getBlockSize():uint;
/**
* Encrypt one block of data in "block", starting at "index", of length "getBlockSize()"
*/
function encrypt(block:ByteArray, index:uint=0):void;
/**
* Decrypt one block of data in "block", starting at "index", of length "getBlockSize()"
*/
function decrypt(block:ByteArray, index:uint=0):void;
/**
* Attempts to destroy sensitive information from memory, such as encryption keys.
* Note: This is not guaranteed to work given the Flash sandbox model.
*/
function dispose():void;
function toString():String;
}
}
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