Class KEMKDFSpec

java.lang.Object

org.bouncycastle.jcajce.spec.KEMKDFSpec

Direct Known Subclasses:

KEMExtractSpec, KEMGenerateSpec, KTSParameterSpec

public class KEMKDFSpec
extends Object

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	KEMKDFSpec(AlgorithmIdentifier kdfAlgorithm, byte[] otherInfo, String keyAlgorithmName, int keySizeInBits)	Base constructor.

Method Summary

Modifier and Type	Method	Description
AlgorithmIdentifier	getKdfAlgorithm()
String	getKeyAlgorithmName()
int	getKeySize()
byte[]	getOtherInfo()

Methods inherited from class Object

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

Constructor Details

KEMKDFSpec

protected KEMKDFSpec(AlgorithmIdentifier kdfAlgorithm,
 byte[] otherInfo,
 String keyAlgorithmName,
 int keySizeInBits)

Base constructor.

A null otherInfo is stored as empty, so getOtherInfo() never returns null. The Builder of every spec in this package already does that, but this constructor is reachable directly by a subclass - the deprecated KEMParameterSpec is one - and org.bouncycastle.jcajce.provider.asymmetric.util.KdfUtil's KMAC and SHAKE-256 branches read the otherInfo length without a guard, so a null here would surface as a NullPointerException out of a KEM operation.

Parameters:

kdfAlgorithm - the KDF to derive with, or null for the shared secret as it comes.

otherInfo - the otherInfo/IV to feed the KDF, may be null for none.

keyAlgorithmName - the algorithm name for the derived key.

keySizeInBits - the size of the key to derive.

Method Details

getKeyAlgorithmName

public String getKeyAlgorithmName()

getKeySize

public int getKeySize()

getKdfAlgorithm

public AlgorithmIdentifier getKdfAlgorithm()

getOtherInfo

public byte[] getOtherInfo()