org.gudy.bouncycastle.jce.provider
Class JCEECDHKeyAgreement

java.lang.Object
  extended by javax.crypto.KeyAgreementSpi
      extended by 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