Replay Attack Prevention in Kerberos Authentication Protocol using Triple Password
Gagan Dua, Nitin Gautam, Dharmendar Sharma, Ankit Arora · International journal of Computer Networks & Communications · 2013
Replay attack and password attacks are serious issues in the Kerberos authentication protocol.Many ideas have been proposed to prevent these attacks but they increase complexity of the total Kerberos environment.In this paper we present an improved method which prevents replay attacks and password attacks by using Triple password scheme.Three passwords are stored on Authentication Server and Authentication Server sends two passwords to Ticket Granting Server (one for Application Server) by encrypting with the secret key shared between Authentication server and Ticket Granting server.Similarly, Ticket Granting Server sends one password to Application Server by encrypting with the secret key shared between TGS and application server.Meanwhile