ajanta.util
Class Ticketing

java.lang.Object
  |
  +--ajanta.util.Ticketing

Direct Known Subclasses:

AgentTicketing

public class Ticketing

extends java.lang.Object

Base ticketing class.This object take care of create and verify ticket. Imporantly it stores the challeges send to the other.

Field Summary

protected java.security.Signature	caller_dsa
protected java.util.Hashtable	challenges

Constructor Summary

Ticketing(ajanta.naming.URN name, java.security.PrivateKey k)
Constructor

Method Summary

int	getChallenge(ajanta.naming.URN callee, ajanta.util.ContextObject context) register nonce for initial challenge, so that it can be used for verification
ajanta.util.Ticket	getTicket(ajanta.naming.URN caller, int nonce, ajanta.util.ContextObject context) Gets a ticket for the caller
boolean	verifyTicket(ajanta.util.Ticket t, java.security.PublicKey vk) verifies a ticket

Methods inherited from class java.lang.Object

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

Field Detail

challenges

protected java.util.Hashtable challenges

caller_dsa

protected java.security.Signature caller_dsa

Constructor Detail

Ticketing

public Ticketing(ajanta.naming.URN name,
                 java.security.PrivateKey k)

Constructor

Parameters:

name - - the ticket granter

k - - private key of the ticket granter who will sign the ticket

Method Detail

getChallenge

public int getChallenge(ajanta.naming.URN callee,
                        ajanta.util.ContextObject context)

register nonce for initial challenge, so that it can be used for verification

Parameters:

callee - - to whom the initial challenge is sent

Returns:

- the ramdom nonce for the callee

getTicket

public ajanta.util.Ticket getTicket(ajanta.naming.URN caller,
                                    int nonce,
                                    ajanta.util.ContextObject context)

Gets a ticket for the caller

Parameters:

caller - for whom the ticket will be issued

nonce - the challenge provoded by the caller

verifyTicket

public boolean verifyTicket(ajanta.util.Ticket t,
                            java.security.PublicKey vk)
                     throws java.rmi.RemoteException,
                            java.security.InvalidKeyException,
                            java.security.SignatureException

verifies a ticket

Parameters:

t - - the ticket which would be verified.

vk - - the public key of the ticket granter

java.rmi.RemoteException

java.security.InvalidKeyException

java.security.SignatureException