iaik.security.ec.ecdh

Class ECDHParameterSpec

java.lang.Object

java.security.spec.ECParameterSpec

iaik.security.ec.common.ECParameterSpec

iaik.security.ec.ecdh.ECDHParameterSpec

All Implemented Interfaces:

Cloneable, AlgorithmParameterSpec

public final class ECDHParameterSpec
extends ECParameterSpec

This parameter class is intended for use with ECDH. It extends the ordinary ECParameterSpec with additional parameters for a key derivation function (KDF). If no KDF parameters are present, then the raw secret will be generated.

Author:

Christian Hanser, Sebastian Ramacher

See Also:

ECParameterSpec, ECDHKeyAgreement, ECDHWithCofactorKeyAgreement

Constructor Summary

Constructors

Constructor and Description
ECDHParameterSpec(ECParameterSpec ecParams) Creates a new parameter spec object without KDF parameters.
ECDHParameterSpec(ECParameterSpec ecParams, KDFParameterSpec kdfParams) Creates a new parameter spec object.

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object obj)
KDFParameterSpec	getKDFParams() Returns the KDF parameters.
int	hashCode()

Methods inherited from class iaik.security.ec.common.ECParameterSpec

clone, decode, getCurve, getEndomorphismAux0, getEndomorphismAux1, getHashAlgorithmID, getOID, getParameterSpec, getParameterSpec, setDefaultOIDEncoding, toASN1Object, toString, usesDefaultOIDEncoding

Methods inherited from class java.security.spec.ECParameterSpec

getCofactor, getGenerator, getOrder

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

ECDHParameterSpec

public ECDHParameterSpec(ECParameterSpec ecParams,
                         KDFParameterSpec kdfParams)

Creates a new parameter spec object.

Parameters:

ecParams - the elliptic curve domain parameters

kdfParams - the KDF parameters

ECDHParameterSpec

public ECDHParameterSpec(ECParameterSpec ecParams)

Creates a new parameter spec object without KDF parameters. Hence, using this parameter instance the ECDH routine will output the raw secret.

Parameters:

ecParams - the elliptic curve domain parameters

Method Detail

getKDFParams

public KDFParameterSpec getKDFParams()

Returns the KDF parameters.

Returns:

the KDF parameters if present, or null otherwise.

equals

public boolean equals(Object obj)

Overrides:

equals in class ECParameterSpec

hashCode

public int hashCode()

Overrides:

hashCode in class ECParameterSpec