Kerberos is a computer$-$network authentication protocol that works on the basis of tickets to allow nodes communicating over a non$-$secure network to prove their identity to one another in a secure manner. Which of the following statements about Kerberos is not true?

Each Server $($S$)$ initially shares a secret key with the Key Distribution Center $($KDC$).$

Each Clinet $($C$)$ initially shares a secret key with the Ticket Granting Server $($TGS$).$

The Ticket Granting Server $($TGS$)$ initialliy shares a secret key with KDC$.$

Kerberos users the Diffie$-$Hellman key exchange protocol to establish all session keys.

The session key is generated by the Client.

Kerberos uses the Digital Signature Standard for the client to authenticate the server