Package 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	Description
protected final String	kaAlgorithm
protected final DerivationFunction	kdf
protected byte[]	ukmParameters
protected byte[]	ukmParametersSalt

Constructor Summary

Constructors

Constructor	Description
BaseAgreementSpi(String kaAlgorithm, DerivationFunction kdf)

Method Summary

Modifier and Type	Method	Description
protected abstract byte[]	doCalcSecret()
protected abstract void	doInitFromKey(Key key, AlgorithmParameterSpec parameterSpec, SecureRandom random)
protected byte[]	engineGenerateSecret()
protected int	engineGenerateSecret(byte[] sharedSecret, int offset)
protected SecretKey	engineGenerateSecret(String algorithm)
protected void	engineInit(Key key, SecureRandom random)
protected void	engineInit(Key key, AlgorithmParameterSpec params, SecureRandom random)
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

Methods inherited from class java.lang.Object

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

Field Details

kaAlgorithm

protected final String kaAlgorithm

kdf

protected final DerivationFunction kdf

ukmParameters

protected byte[] ukmParameters

ukmParametersSalt

protected byte[] ukmParametersSalt

Constructor Details

BaseAgreementSpi

public BaseAgreementSpi(String kaAlgorithm,
 DerivationFunction kdf)

Method Details

getAlgorithm

protected static String getAlgorithm(String algDetails)

getKeySize

protected static int getKeySize(String algDetails)

trimZeroes

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

engineInit

protected void engineInit(Key key,
 SecureRandom random)
                   throws InvalidKeyException

Specified by:

engineInit in class KeyAgreementSpi

Throws:

InvalidKeyException

engineInit

protected void engineInit(Key key,
 AlgorithmParameterSpec params,
 SecureRandom random)
                   throws InvalidKeyException,
InvalidAlgorithmParameterException

Specified by:

engineInit in class KeyAgreementSpi

Throws:

InvalidKeyException

InvalidAlgorithmParameterException

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

doCalcSecret

protected abstract byte[] doCalcSecret()

doInitFromKey

protected abstract void doInitFromKey(Key key,
 AlgorithmParameterSpec parameterSpec,
 SecureRandom random)
                               throws InvalidKeyException,
InvalidAlgorithmParameterException

Throws:

InvalidKeyException

InvalidAlgorithmParameterException