Manipal University 2007 B.E Information Technology SEVENTH SEMESTER (IT) END SEMESTER MAKEUP – , - Question Paper
SEVENTH SEMESTER B.E. (IT) DEGREE END SEMESTER MAKEUP exam – JAN, 2007
SUBJECT: E-COMMERCE & N/W SECURITY– ICT 407.6
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Manipal Institute of Technology
(Constituent Institute of MAHE - Deemed University) "
Manipal - 576 104
SEVENTH SEMESTER B.E. (IT) DEGREE END SEMESTER MAKEUP EXAMINATION - JAN, 2007
SUBJECT: E-COMMERCE & N/W SECURITY- ICT 407.6 (REVISED CREDIT SYSTEM)
TIME: 3 HOURS MAX.MARKS: 50
Instructions to Candidates:
Answer any 5 FULL questions.
All questions carry equal marks.
Write neat diagrams wherever necessary
IA. With suitable packet formats explain ESP encryption and authentication in both transport and tunnel mode.
IB. What is passive attack? Explain two types of passive attack in detail.
IC. Write a short note on Trojan horse.
(5+3+2)
2A. With an example explain data compression using ZIP algorithm.
2B. Explain any three cryptanalytic attacks on encrypted messages.
2C. Write a short note on RC5 algorithm.
(5+3+2)
3A. Explain the differences between Kerberos version 4 and version 5 with respect to the environmental shortcomings.
3B. Explain the man-in-middle attack with an example.
3C. In a public key system using RSA, intercept the cipher text C = 10 sent to a user whose public key is e = 5, n = 35. What is the plaintext M?
(5+3+2)
4A. Explain Phase 1 of handshake protocol in SSL.
4B. Briefly explain MIME transfer encodings.
4C. Briefly explain the following:
(i) PRE-AUTHENT (ii) PROXIABLE
(5+3+2)
5A. Briefly explain the packet filter router. What are its advantages and disadvantages?
5B. What is SCM? Write the characteristics of SCM.
5C. Write a short notes on Hypertext documents.
(5+3+2)
6A. Explain the online third party process in detail with a neat block diagram.
6B. Briefly describe about the different types of diffie-hellman key exchange method used in SSL handshake protocol.
6C. Briefly explain about the following e-cash related terms:
(i) blinding (ii) double spending
(5+3+2)
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