Classical Cryptography Simulator

Kerberos Authentication Protocol - Visual Simulation

Interactive canvas-based Kerberos authentication simulation with animated message flow.

Interactive Kerberos Simulation
Visual demonstration of Kerberos authentication with animated message flow

Authentication Service (AS) Exchange

Client authenticates with Authentication Service to obtain Ticket Granting Ticket (TGT)

Step Outcome

Alice receives TGT and session key Kc,tgs encrypted with her password

User Authentication Simulation
Simulate Kerberos authentication with custom parameters

Authentication Context

User Principal:alice@REALM.COM
Service Principal:fileserver/host@REALM.COM
Current Step:Step 1 - Authentication Service (AS) Exchange
Messages Exchanged:0/2
Kerberos Servers
The three main Kerberos servers and their roles

🛡️ Authentication Service (AS)

Verifies client identity and issues Ticket Granting Tickets (TGTs)

🎫 Ticket Granting Service (TGS)

Validates TGTs and issues service tickets for specific services

🖥️ Service Server (SS)

Validates service tickets and provides access to requested services

Security Features
Key security mechanisms in Kerberos

Timestamp Protection

Prevents replay attacks using timestamps with short validity periods

Session Keys

Unique session keys for each client-service communication

Mutual Authentication

Both client and server authenticate each other

Ticket Lifetime

Tickets have limited lifetime to prevent misuse