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Pune University - Sem - III : Information Systems Security, April 2010

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Total No. of Questions :5] [Total No. of Pages : 2 P1066 [3733]-303 M.Sc. COMPUTER SCIENCE CS -303 : Information Systems Security (Old & New Course) (Sem. - III) Time :3Hours] [Max. Marks : 80 Instructions to the candidates: 1) All questions are compulsory. 2) All questions carry equal marks. 3) Neat diagrams must be drawn wherever necessary. 4) Assume suitable data, if necessary. Q1) Attempt all of the following : a) Explain meet-in-middle attack. b) What is algorithm modes? State four algorithm modes. c) What is cross certification? d) Differentiate between authentication and authorization. e) What is stenography? Give an example. f) State e-mail related crimes. g) What is mean by delta - CRL? h) [8 2 = 16] What is mean by message digest? Explain collision. Q2) Attempt any four of the following : [4 4 = 16] a) Explain working of RC-5 with suitable example. b) Write a note on Blowfish. c) Explain key generation and management using RSA. d) Explain working of HMAC. e) Explain how PGP provides authentication as well as confidentiality? P.T.O.

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Additional Info : M.Sc. COMPUTER SCIENCE, CS -303 : Information Systems Security ( New & Old Course) (Semister - III), Pune University
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