old.org.bouncycastle.jce.provider.asymmetric.ec

Class KeyAgreement

java.lang.Object

javax.crypto.KeyAgreementSpi

old.org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement

Direct Known Subclasses:

KeyAgreement.DH, KeyAgreement.DHC, KeyAgreement.DHwithSHA1KDF, KeyAgreement.MQV, KeyAgreement.MQVwithSHA1KDF

public class KeyAgreement
extends KeyAgreementSpi

Diffie-Hellman key agreement using elliptic curve keys, ala IEEE P1363 both the simple one, and the simple one with cofactors are supported. Also, MQV key agreement per SEC-1

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	KeyAgreement.DH
static class	KeyAgreement.DHC
static class	KeyAgreement.DHwithSHA1KDF
static class	KeyAgreement.MQV
static class	KeyAgreement.MQVwithSHA1KDF

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	KeyAgreement(String kaAlgorithm, BasicAgreement agreement, DerivationFunction kdf)

Method Summary

Modifier and Type	Method and Description
protected Key	engineDoPhase(Key key, boolean lastPhase)
protected byte[]	engineGenerateSecret()
protected int	engineGenerateSecret(byte[] sharedSecret, int offset)
protected SecretKey	engineGenerateSecret(String algorithm)
protected void	engineInit(Key key, AlgorithmParameterSpec params, SecureRandom random)
protected void	engineInit(Key key, SecureRandom random)

Methods inherited from class java.lang.Object

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

Constructor Detail

KeyAgreement

protected KeyAgreement(String kaAlgorithm,
                       BasicAgreement agreement,
                       DerivationFunction kdf)

Method Detail

engineDoPhase

protected Key engineDoPhase(Key key,
                            boolean lastPhase)
                     throws InvalidKeyException,
                            IllegalStateException

Specified by:

engineDoPhase in class KeyAgreementSpi

Throws:

InvalidKeyException

IllegalStateException

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

engineInit

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

Specified by:

engineInit in class KeyAgreementSpi

Throws:

InvalidKeyException

InvalidAlgorithmParameterException

engineInit

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

Specified by:

engineInit in class KeyAgreementSpi

Throws:

InvalidKeyException