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Question:
(a) What is the use of digital certificate?
(b) What is meant by a hierarchical trust model in a Public Key Infrastructure? How does the Pretty Good Privacy (PGP) model of trust differ from this? Illustrate your answer with diagrams. Why is it important that PGP certificates allow multiple signers?
(c) What do you understand by certificate revocation? Give two instances when a certificate needs to be revoked. How does the public key infrastructure handle revocation?
(d) As a web user, how can you tell if the site you are communicating with is using SSL security?
(e) Explain how the dual signature used in the Secure Electronic Transaction (SET) protocol allows privacy, that is, the merchant can see only the order information and the bank can access only the payment information.
(f) Why is the 3-D secure protocol more secure than SET?
Question: (a) Your office administrator is being trained to take server backups. Which authorization model could be ideal for this situation: MAC, DAC or RBAC? Justify your a
#questioAn elliptic curve y^2=x^3+ax+b(mod29) includes points P=(7, 15) and Q=(16, 13) a)Determine the equation of the crve b) Determine all values of x for which there is no point
You have been asked to design a Banking Network with two primary types of locations. Branches that will have 3 subnets, one /25 subnet one /26 subnet for ABMS and one /26 s
Code to implement Otway-Rees Key Exchange Protocol
DEPLOYMENT AND IMPLEMENTING OF AN IDS The strategy for deploying IDS should consider various factors. These factors will determine the number of administrators required to insta
How does the POP functions? What are the advantages/benefits of IMAP over POP? POP stands for Post Office Protocol, version 3 (POP3) is one of the easiest message access protoc
What do you understand by cryptanalysis? Discuss about the transposition ciphers substitution cipher, and onetime pads. The messages which are intended to transmit secretly and
Ask You have been asked by a new client to assist in setting up a new computer for her coffee shop. She has just purchased the newest Apple computer from an online site. Should wou
Problem (a) Below is a capture of an Ethernet II frame which contains an IPv4 packet and a TCP segment. The second screen capture is from the data portion of the frame.
ROUTING TABLES AND ADDRESS MASKS Additional information is saved in routing table. Destination is kept as network address. Next hop is saved as IP address of router. Address m
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