com.lowagie.text.pdf.crypto
Class IVGenerator

java.lang.Object
  com.lowagie.text.pdf.crypto.IVGenerator

public final class IVGenerator
extends Object

An initialization vector generator for a CBC block encryption. It's a random generator based on ARCFOUR.

Author:

Paulo Soares (psoares@consiste.pt)

Field Summary

private static ARCFOUREncryption

arcfour

Constructor Summary

private

IVGenerator() Creates a new instance of IVGenerator

Method Summary

static byte[]	getIV() Gets a 16 byte random initialization vector.
static byte[]	getIV(int len) Gets a random initialization vector.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

arcfour

private static ARCFOUREncryption arcfour

Constructor Detail

IVGenerator

private IVGenerator()

Creates a new instance of IVGenerator

Method Detail

getIV

public static byte[] getIV()

Gets a 16 byte random initialization vector.

Returns:

a 16 byte random initialization vector

getIV

public static byte[] getIV(int len)

Gets a random initialization vector.

Parameters:

len - the length of the initialization vector

Returns:

a random initialization vector