Can you guys help me answer these questions please? Thanks in advance.

5. (15 pts) In the Kerberos protocol, the ticket generated by the TGS comtains the following information; , and (10 pts) Is this ticket encrypted? If not, explain why encryption is not necessary. If yes, what and whose key is used? , and explain why encryption is necessary. (3 ptS) . (2 pts) 6. (12 pts) Bob is sending a signed and encrypted S/MIME message to Alice. What and whose key is used to encrypted the message's hash? (3 pts) What and whose key is used to encrypted the message content? (3 pts) Is any of Alice's keys used? If yes, what key is that? And what part of the email is encrypted with that key? (6 pts)