iaik.security.ec.ecmqv

Class ECMQVKeyAgreement

java.lang.Object

javax.crypto.KeyAgreementSpi

iaik.security.ec.ecmqv.ECMQVKeyAgreement

public final class ECMQVKeyAgreement
extends KeyAgreementSpi

Implements the elliptic curve MQV key agreement scheme (ECMQV) according to [1], using ECDHParameterSpec as key agreement parameters.

References:

[1] Certicom Research. 2009. Standards for Efficient Cryptography - SEC 1: Elliptic Curve Cryptography v2.0

Author:

Christian Wagner, Christian Hanser

See Also:

ECDHParameterSpec

Constructor Summary

Constructors

Constructor and Description
ECMQVKeyAgreement() Creates a new instance.

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

ECMQVKeyAgreement

public ECMQVKeyAgreement()

Creates a new instance.

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 SecretKey engineGenerateSecret(String algorithm)
                                  throws IllegalStateException,
                                         NoSuchAlgorithmException,
                                         InvalidKeyException

Specified by:

engineGenerateSecret in class KeyAgreementSpi

Throws:

IllegalStateException

NoSuchAlgorithmException

InvalidKeyException

engineGenerateSecret

protected int engineGenerateSecret(byte[] sharedSecret,
                                   int offset)
                            throws IllegalStateException,
                                   ShortBufferException

Specified by:

engineGenerateSecret in class KeyAgreementSpi

Throws:

IllegalStateException

ShortBufferException

engineInit

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

Specified by:

engineInit in class KeyAgreementSpi

Throws:

InvalidKeyException

engineInit

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

Specified by:

engineInit in class KeyAgreementSpi

Throws:

InvalidKeyException

InvalidAlgorithmParameterException