org.bouncycastle.crypto.generators
Class KDFFeedbackBytesGenerator

java.lang.Object
  org.bouncycastle.crypto.generators.KDFFeedbackBytesGenerator

All Implemented Interfaces:

DerivationFunction, MacDerivationFunction

public class KDFFeedbackBytesGenerator

extends java.lang.Object

implements MacDerivationFunction

This KDF has been defined by the publicly available NIST SP 800-108 specification.

Constructor Summary

KDFFeedbackBytesGenerator(Mac prf)

Method Summary

int	generateBytes(byte[] out, int outOff, int len)
Mac	getMac() return the MAC used as the basis for the function
void	init(DerivationParameters params)

Methods inherited from class java.lang.Object

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

Constructor Detail

KDFFeedbackBytesGenerator

public KDFFeedbackBytesGenerator(Mac prf)

Method Detail

init

public void init(DerivationParameters params)

Specified by:

init in interface DerivationFunction

getMac

public Mac getMac()

Description copied from interface: MacDerivationFunction

return the MAC used as the basis for the function

Specified by:

getMac in interface MacDerivationFunction

Returns:

the Mac.

generateBytes

public int generateBytes(byte[] out,
                         int outOff,
                         int len)
                  throws DataLengthException,
                         java.lang.IllegalArgumentException

Specified by:

generateBytes in interface DerivationFunction

Throws:

DataLengthException

java.lang.IllegalArgumentException