public class

DHAgreement

extends Object
java.lang.Object
   ↳ org.bouncycastle.crypto.agreement.DHAgreement

Class Overview

a Diffie-Hellman key exchange engine.

note: This uses MTI/A0 key agreement in order to make the key agreement secure against passive attacks. If you're doing Diffie-Hellman and both parties have long term public keys you should look at using this. For further information have a look at RFC 2631.

It's possible to extend this to more than two parties as well, for the moment that is left as an exercise for the reader.

Summary

Public Constructors
DHAgreement()
Public Methods
BigInteger calculateAgreement(DHPublicKeyParameters pub, BigInteger message)
given a message from a given party and the corresponding public key, calculate the next message in the agreement sequence.
BigInteger calculateMessage()
calculate our initial message.
void init(CipherParameters param)
[Expand]
Inherited Methods
From class java.lang.Object

Public Constructors

public DHAgreement ()

Public Methods

public BigInteger calculateAgreement (DHPublicKeyParameters pub, BigInteger message)

given a message from a given party and the corresponding public key, calculate the next message in the agreement sequence. In this case this will represent the shared secret.

public BigInteger calculateMessage ()

calculate our initial message.

public void init (CipherParameters param)