March 5, 2002
Practical Aspects of Modern Cryptography
6
The Kerberos Model
nClients
nServers
nThe Key Distribution Center (KDC)
n Centralized trust model
nKDC is trusted by all clients & servers
nKDC shares a secret, symmetric key with each client and server
nA “realm” is single trust domain consisting of one or more clients, servers, KDCs