org.spongycastle.crypto.agreement.kdf

Class ECDHKEKGenerator

java.lang.Object

org.spongycastle.crypto.agreement.kdf.ECDHKEKGenerator

All Implemented Interfaces:

DerivationFunction, DigestDerivationFunction

public class ECDHKEKGenerator
extends java.lang.Object
implements DigestDerivationFunction

X9.63 based key derivation function for ECDH CMS.

Constructor Summary

Constructors

Constructor and Description
ECDHKEKGenerator(Digest digest)

Method Summary

Modifier and Type	Method and Description
int	generateBytes(byte[] out, int outOff, int len)
Digest	getDigest() return the message digest used as the basis for the function
void	init(DerivationParameters param)

Methods inherited from class java.lang.Object

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

Constructor Detail

ECDHKEKGenerator

public ECDHKEKGenerator(Digest digest)

Method Detail

init

public void init(DerivationParameters param)

Specified by:

init in interface DerivationFunction

getDigest

public Digest getDigest()

Description copied from interface: DigestDerivationFunction

return the message digest used as the basis for the function

Specified by:

getDigest in interface DigestDerivationFunction

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