org.spongycastle.crypto.agreement

Class DHBasicAgreement

java.lang.Object

org.spongycastle.crypto.agreement.DHBasicAgreement

All Implemented Interfaces:

BasicAgreement

public class DHBasicAgreement
extends java.lang.Object
implements BasicAgreement

a Diffie-Hellman key agreement class.

note: This is only the basic algorithm, it doesn't take advantage of long term public keys if they are available. See the DHAgreement class for a "better" implementation.

Constructor Summary

Constructors

Constructor and Description
DHBasicAgreement()

Method Summary

Modifier and Type	Method and Description
java.math.BigInteger	calculateAgreement(CipherParameters pubKey) given a short term public key from a given party calculate the next message in the agreement sequence.
int	getFieldSize() return the field size for the agreement algorithm in bytes.
void	init(CipherParameters param) initialise the agreement engine.

Methods inherited from class java.lang.Object

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

Constructor Detail

DHBasicAgreement

public DHBasicAgreement()

Method Detail

init

public void init(CipherParameters param)

Description copied from interface: BasicAgreement

initialise the agreement engine.

Specified by:

init in interface BasicAgreement

getFieldSize

public int getFieldSize()

Description copied from interface: BasicAgreement

return the field size for the agreement algorithm in bytes.

Specified by:

getFieldSize in interface BasicAgreement

calculateAgreement

public java.math.BigInteger calculateAgreement(CipherParameters pubKey)

given a short term public key from a given party calculate the next message in the agreement sequence.

Specified by:

calculateAgreement in interface BasicAgreement