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

public abstract class BaseAgreementSpi
extends javax.crypto.KeyAgreementSpi

Field Summary

Fields

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

Constructor Summary

Constructors

Constructor and Description
BaseAgreementSpi(java.lang.String kaAlgorithm, DerivationFunction kdf)

Method Summary

Modifier and Type	Method and Description
protected abstract byte[]	doCalcSecret()
protected abstract void	doInitFromKey(java.security.Key key, java.security.spec.AlgorithmParameterSpec parameterSpec, java.security.SecureRandom random)
protected byte[]	engineGenerateSecret()
protected int	engineGenerateSecret(byte[] sharedSecret, int offset)
protected javax.crypto.SecretKey	engineGenerateSecret(java.lang.String algorithm)
protected void	engineInit(java.security.Key key, java.security.spec.AlgorithmParameterSpec params, java.security.SecureRandom random)
protected void	engineInit(java.security.Key key, java.security.SecureRandom random)
protected static java.lang.String	getAlgorithm(java.lang.String algDetails)
protected static int	getKeySize(java.lang.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 Detail

kaAlgorithm

protected final java.lang.String kaAlgorithm

kdf

protected final DerivationFunction kdf

ukmParameters

protected byte[] ukmParameters

Constructor Detail

BaseAgreementSpi

public BaseAgreementSpi(java.lang.String kaAlgorithm,
                        DerivationFunction kdf)

Method Detail

getAlgorithm

protected static java.lang.String getAlgorithm(java.lang.String algDetails)

getKeySize

protected static int getKeySize(java.lang.String algDetails)

trimZeroes

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

engineInit

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

Specified by:

engineInit in class javax.crypto.KeyAgreementSpi

Throws:

java.security.InvalidKeyException

engineInit

protected void engineInit(java.security.Key key,
                          java.security.spec.AlgorithmParameterSpec params,
                          java.security.SecureRandom random)
                   throws java.security.InvalidKeyException,
                          java.security.InvalidAlgorithmParameterException

Specified by:

engineInit in class javax.crypto.KeyAgreementSpi

Throws:

java.security.InvalidKeyException

java.security.InvalidAlgorithmParameterException

engineGenerateSecret

protected byte[] engineGenerateSecret()
                               throws java.lang.IllegalStateException

Specified by:

engineGenerateSecret in class javax.crypto.KeyAgreementSpi

Throws:

java.lang.IllegalStateException

engineGenerateSecret

protected int engineGenerateSecret(byte[] sharedSecret,
                                   int offset)
                            throws java.lang.IllegalStateException,
                                   javax.crypto.ShortBufferException

Specified by:

engineGenerateSecret in class javax.crypto.KeyAgreementSpi

Throws:

java.lang.IllegalStateException

javax.crypto.ShortBufferException

engineGenerateSecret

protected javax.crypto.SecretKey engineGenerateSecret(java.lang.String algorithm)
                                               throws java.security.NoSuchAlgorithmException

Specified by:

engineGenerateSecret in class javax.crypto.KeyAgreementSpi

Throws:

java.security.NoSuchAlgorithmException

doCalcSecret

protected abstract byte[] doCalcSecret()

doInitFromKey

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

Throws:

java.security.InvalidKeyException

java.security.InvalidAlgorithmParameterException