org.bouncycastle.cert.crmf
Class FixedLengthMGF1Padder

java.lang.Object
  org.bouncycastle.cert.crmf.FixedLengthMGF1Padder

All Implemented Interfaces:

EncryptedValuePadder

public class FixedLengthMGF1Padder
extends java.lang.Object
implements EncryptedValuePadder

An encrypted value padder that uses MGF1 as the basis of the padding.

Constructor Summary

FixedLengthMGF1Padder(int length)
Create a padder to so that padded output will always be at least length bytes long.

FixedLengthMGF1Padder(int length, java.security.SecureRandom random)
Create a padder to so that padded output will always be at least length bytes long, using the passed in source of randomness to provide the random material for the padder.

Method Summary

byte[]	getPaddedData(byte[] data) Return a byte array of padded data.
byte[]	getUnpaddedData(byte[] paddedData) Return a byte array of with padding removed.

Methods inherited from class java.lang.Object

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

Constructor Detail

FixedLengthMGF1Padder

public FixedLengthMGF1Padder(int length)

Create a padder to so that padded output will always be at least length bytes long.

Parameters:

length - fixed length for padded output.

FixedLengthMGF1Padder

public FixedLengthMGF1Padder(int length,
                             java.security.SecureRandom random)

Create a padder to so that padded output will always be at least length bytes long, using the passed in source of randomness to provide the random material for the padder.

Parameters:

length - fixed length for padded output.

random - a source of randomness.

Method Detail

getPaddedData

public byte[] getPaddedData(byte[] data)

Description copied from interface: EncryptedValuePadder

Return a byte array of padded data.

Specified by:

getPaddedData in interface EncryptedValuePadder

Parameters:

data - the data to be padded.

Returns:

a padded byte array containing data.

getUnpaddedData

public byte[] getUnpaddedData(byte[] paddedData)

Description copied from interface: EncryptedValuePadder

Return a byte array of with padding removed.

Specified by:

getUnpaddedData in interface EncryptedValuePadder

Parameters:

paddedData - the data to be padded.

Returns:

an array containing the original unpadded data.