org.gudy.bouncycastle.jce.provider
Class JCEECDHKeyAgreement

java.lang.Object
  javax.crypto.KeyAgreementSpi
      org.gudy.bouncycastle.jce.provider.JCEECDHKeyAgreement

Direct Known Subclasses:

JCEECDHKeyAgreement.DH

public class JCEECDHKeyAgreement
extends javax.crypto.KeyAgreementSpi

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

Nested Class Summary

static class

JCEECDHKeyAgreement.DH

Constructor Summary

protected

JCEECDHKeyAgreement(BasicAgreement agreement)

Method Summary

java.security.Key	doPhase(java.security.Key key, boolean lastPhase)
protected java.security.Key	engineDoPhase(java.security.Key key, boolean lastPhase)
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)
byte[]	generateSecret()
void	init(java.security.Key key)

Methods inherited from class java.lang.Object

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

Constructor Detail

JCEECDHKeyAgreement

protected JCEECDHKeyAgreement(BasicAgreement agreement)

Method Detail

doPhase

public java.security.Key doPhase(java.security.Key key,
                                 boolean lastPhase)
                          throws java.security.InvalidKeyException,
                                 java.lang.IllegalStateException

Throws:

java.security.InvalidKeyException

java.lang.IllegalStateException

engineDoPhase

protected java.security.Key engineDoPhase(java.security.Key key,
                                          boolean lastPhase)
                                   throws java.security.InvalidKeyException,
                                          java.lang.IllegalStateException

Specified by:

engineDoPhase in class javax.crypto.KeyAgreementSpi

Throws:

java.security.InvalidKeyException

java.lang.IllegalStateException

generateSecret

public byte[] generateSecret()
                      throws java.lang.IllegalStateException

Throws:

java.lang.IllegalStateException

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)

Specified by:

engineGenerateSecret in class javax.crypto.KeyAgreementSpi

init

public void init(java.security.Key key)
          throws java.security.InvalidKeyException,
                 java.security.InvalidAlgorithmParameterException

Throws:

java.security.InvalidKeyException

java.security.InvalidAlgorithmParameterException

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

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