org.bouncycastle.jcajce.provider.asymmetric.util

Class BaseAgreementSpi

java.lang.Object

javax.crypto.KeyAgreementSpi

org.bouncycastle.jcajce.provider.asymmetric.util.BaseAgreementSpi

Direct Known Subclasses:

KeyAgreementSpi, KeyAgreementSpi, KeyAgreementSpi, KeyAgreementSpi, KeyAgreementSpi, KeyAgreementSpi

public abstract class BaseAgreementSpi
extends KeyAgreementSpi

Field Summary

Fields

Modifier and Type	Field and Description
protected String	kaAlgorithm
protected DerivationFunction	kdf
protected byte[]	ukmParameters

Constructor Summary

Constructors

Constructor and Description
BaseAgreementSpi(String kaAlgorithm, DerivationFunction kdf)

Method Summary

Modifier and Type	Method and Description
protected abstract byte[]	calcSecret()
protected byte[]	engineGenerateSecret()
protected int	engineGenerateSecret(byte[] sharedSecret, int offset)
protected SecretKey	engineGenerateSecret(String algorithm)
protected static String	getAlgorithm(String algDetails)
protected static int	getKeySize(String algDetails)
protected static byte[]	trimZeroes(byte[] secret)

Methods inherited from class javax.crypto.KeyAgreementSpi

engineDoPhase, engineInit, engineInit

Methods inherited from class java.lang.Object

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

Field Detail

kaAlgorithm

protected final String kaAlgorithm

kdf

protected final DerivationFunction kdf

ukmParameters

protected byte[] ukmParameters

Constructor Detail

BaseAgreementSpi

public BaseAgreementSpi(String kaAlgorithm,
                        DerivationFunction kdf)

Method Detail

getAlgorithm

protected static String getAlgorithm(String algDetails)

getKeySize

protected static int getKeySize(String algDetails)

trimZeroes

protected static byte[] trimZeroes(byte[] secret)

engineGenerateSecret

protected byte[] engineGenerateSecret()
                               throws IllegalStateException

Specified by:

engineGenerateSecret in class KeyAgreementSpi

Throws:

IllegalStateException

engineGenerateSecret

protected int engineGenerateSecret(byte[] sharedSecret,
                                   int offset)
                            throws IllegalStateException,
                                   ShortBufferException

Specified by:

engineGenerateSecret in class KeyAgreementSpi

Throws:

IllegalStateException

ShortBufferException

engineGenerateSecret

protected SecretKey engineGenerateSecret(String algorithm)
                                  throws NoSuchAlgorithmException

Specified by:

engineGenerateSecret in class KeyAgreementSpi

Throws:

NoSuchAlgorithmException

calcSecret

protected abstract byte[] calcSecret()