org.spongycastle.jcajce.provider.asymmetric.util

Class BaseAgreementSpi

java.lang.Object

javax.crypto.KeyAgreementSpi

org.spongycastle.jcajce.provider.asymmetric.util.BaseAgreementSpi

Direct Known Subclasses:

KeyAgreementSpi, KeyAgreementSpi

public abstract class BaseAgreementSpi
extends javax.crypto.KeyAgreementSpi

Field Summary

Fields

Modifier and Type	Field and Description
protected java.math.BigInteger	result
protected byte[]	ukmParameters

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method and Description
protected abstract byte[]	bigIntToBytes(java.math.BigInteger result)
protected byte[]	engineGenerateSecret()
protected int	engineGenerateSecret(byte[] sharedSecret, int offset)
protected javax.crypto.SecretKey	engineGenerateSecret(java.lang.String algorithm)
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, engineInit, engineInit

Methods inherited from class java.lang.Object

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

Field Detail

result

protected java.math.BigInteger result

ukmParameters

protected byte[] ukmParameters

Constructor Detail

BaseAgreementSpi

public BaseAgreementSpi(java.lang.String kaAlgorithm,
                        org.spongycastle.crypto.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)

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

bigIntToBytes

protected abstract byte[] bigIntToBytes(java.math.BigInteger result)