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

public abstract class BaseAgreementSpi

extends javax.crypto.KeyAgreementSpi

Field Summary

protected java.lang.String	kaAlgorithm
protected DerivationFunction	kdf
protected byte[]	ukmParameters

Constructor Summary

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

Method Summary

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

Overrides:

engineInit in class javax.crypto.KeyAgreementSpi

engineInit

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

Overrides:

engineInit in class javax.crypto.KeyAgreementSpi

engineGenerateSecret

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

Overrides:

engineGenerateSecret in class javax.crypto.KeyAgreementSpi

engineGenerateSecret

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

Overrides:

engineGenerateSecret in class javax.crypto.KeyAgreementSpi

engineGenerateSecret

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

Overrides:

engineGenerateSecret in class javax.crypto.KeyAgreementSpi

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