org.spongycastle.crypto.generators

Class KDFFeedbackBytesGenerator

java.lang.Object

org.spongycastle.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

Constructors

Constructor and Description
KDFFeedbackBytesGenerator(Mac prf)

Method Summary

Modifier and Type	Method and Description
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

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