org.bouncycastle.crypto.agreement
Class DHAgreement
java.lang.Object
|
+--org.bouncycastle.crypto.agreement.DHAgreement
- public class DHAgreement
- extends java.lang.Object
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.
| Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
DHAgreement
public DHAgreement()
init
public void init(CipherParameters param)
calculateMessage
public java.math.BigInteger calculateMessage()
- calculate our initial message.
calculateAgreement
public java.math.BigInteger calculateAgreement(DHPublicKeyParameters pub,
java.math.BigInteger message)
- given a message from a given party and the coresponding public key
calculate the next message in the agreement sequence. In this case
this will represent the shared secret.