(10) Consider the following message from Ann to Bob: ID_Ann || E (M,Ksession), where ID_Ann is Ann's identity and it is concatenated with the encrypted plain text M using secret key Ksession. Only Ann and Bob knows Ksesson. Ann's identity is not confidential; M should be known by Ann and Bob only; and Bob should know that the message is coming from Ann. Show whether the following attacks by Eve compromise any of these security requirements. Justify your answers. a. Eavesdropping c. Replay d. Modify e. Delete (15) Modify the above message such that it provides sender's authentication and verification of integrity. Show the authentication activities at Bob's side