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org.bouncycastle.crypto.fips

pack-priv Class ConcatenationKDFGenerator

Class Inheritance

extends Object
implements DerivationFunction

java.lang.Object
org.bouncycastle.crypto.fips.ConcatenationKDFGenerator

All Implemented Interfaces

org.bouncycastle.crypto.internal.DerivationFunction

Imports

org.bouncycastle.crypto.internal.DataLengthException, .DerivationFunction, .DerivationParameters, .Digest, org.bouncycastle.crypto.internal.params.KDFParameters

Generator for Concatenation Key Derivation Function defined in NIST SP 800-56A, Sect 5.8.1

Field Summary

Modifier and Type	Field and Description
private Digest	digest
private int	hLen
private byte[]	otherInfo
private byte[]	shared

Constructor Summary

Access	Constructor and Description
public	ConcatenationKDFGenerator(Digest the digest to be used as the source of generated bytes digest)

Method Summary

Modifier and Type	Method and Description
public int	generateBytes(byte[] out, int outOff, int len) Implements org.bouncycastle.crypto.internal.DerivationFunction.generateBytes. fill len bytes of the output buffer with bytes generated from the derivation function.
public Digest	getDigest() return the underlying digest.
public void	init(DerivationParameters param) Implements org.bouncycastle.crypto.internal.DerivationFunction.init.
private void	ItoOSP(int i, byte[] sp) int to octet string.

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

Field Detail

digest	back to summary
private Digest digest

hLen	back to summary
private int hLen

otherInfo	back to summary
private byte[] otherInfo

shared	back to summary
private byte[] shared

Constructor Detail

ConcatenationKDFGenerator	back to summary
public ConcatenationKDFGenerator(Digest digest) Parameters digest:Digest the digest to be used as the source of generated bytes

Method Detail

generateBytes

back to summary

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

Implements org.bouncycastle.crypto.internal.DerivationFunction.generateBytes.

fill len bytes of the output buffer with bytes generated from the derivation function.

Exceptions

DataLengthException:: if the out buffer is too small.

getDigest	back to summary
public Digest getDigest() return the underlying digest.

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

ItoOSP	back to summary
private void ItoOSP(int i, byte[] sp) int to octet string.