Top Description Fields Constructors Methods

org.bouncycastle.crypto.generators

public Class KDFDoublePipelineIterationBytesGenerator

Class Inheritance

extends Object
implements MacDerivationFunction

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

All Implemented Interfaces

org.bouncycastle.crypto.MacDerivationFunction, org.bouncycastle.crypto.DerivationFunction

Imports

java.math.BigInteger, org.bouncycastle.crypto.DataLengthException, .DerivationParameters, .Mac, .MacDerivationFunction, org.bouncycastle.crypto.params.KDFDoublePipelineIterationParameters, .KeyParameter

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

Field Summary

Modifier and Type	Field and Description
private byte[]	a
private byte[]	fixedInputData
private int	generatedBytes
private final int	h
private static final BigInteger	INTEGER_MAX
private byte[]	ios
private byte[]	k
private int	maxSizeExcl
private final Mac	prf
private static final BigInteger	TWO
private boolean	useCounter

Constructor Summary

Access	Constructor and Description
public	KDFDoublePipelineIterationBytesGenerator(Mac prf)

Method Summary

Modifier and Type	Method and Description
public int	generateBytes(byte[] out, int outOff, int len) Implements org.bouncycastle.crypto.DerivationFunction.generateBytes.
private void	generateNext()
public Mac	getMac() Implements org.bouncycastle.crypto.MacDerivationFunction.getMac. return the MAC used as the basis for the function
public void	init(DerivationParameters params) Implements org.bouncycastle.crypto.DerivationFunction.init.

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

Field Detail

a	back to summary
private byte[] a

fixedInputData	back to summary
private byte[] fixedInputData

generatedBytes	back to summary
private int generatedBytes

h	back to summary
private final int h

INTEGER_MAX	back to summary
private static final BigInteger INTEGER_MAX

ios	back to summary
private byte[] ios

k	back to summary
private byte[] k

maxSizeExcl	back to summary
private int maxSizeExcl

prf	back to summary
private final Mac prf

TWO	back to summary
private static final BigInteger TWO

useCounter	back to summary
private boolean useCounter

Constructor Detail

KDFDoublePipelineIterationBytesGenerator	back to summary
public KDFDoublePipelineIterationBytesGenerator(Mac prf)

Method Detail

generateBytes	back to summary
public int generateBytes(byte[] out, int outOff, int len) throws DataLengthException, IllegalArgumentException Implements org.bouncycastle.crypto.DerivationFunction.generateBytes.

generateNext	back to summary
private void generateNext()

getMac

back to summary

public Mac getMac()

Implements org.bouncycastle.crypto.MacDerivationFunction.getMac.

Doc from org.bouncycastle.crypto.MacDerivationFunction.getMac.

return the MAC used as the basis for the function

Returns:Mac: the Mac.

init	back to summary
public void init(DerivationParameters params) Implements org.bouncycastle.crypto.DerivationFunction.init.