Thursday, November 10, 2016

CS6701 Cryptography and Network Security Nov Dec 2016 Important Questions

Anna University Chennai - Important University Questions / Question Bank / Previous University Questions
Seventh Semester
Department of Computer Science Engineering
CS6701 Cryptography and Network Security
Nov Dec 2016 Important Questions
(Regulation 2013)

16 Marks Important Questions asked in previous years university examinations.

1. Explain the substitution Encryption Techniques in detail
2. State and Describe (a) Fermat’s theorem (b) Eular’s theorem
3. Explain different security mechanisms focused by OSI security Architecture
4. Explain Data Encryption standard (DES) in detail
5. Explain the following modes of operation in block cipher (a) Electronic code book and Cipher block chaining(b) Cipher feedback mode and output feedback mode
6. Formulate the single round of DES algorithm
7. Evaluate using Diffie-Hellman key exchange technique. Users A and B use a common prime q=11 and a primitive root alpha=7.
If user A has private key XA=3.What is A’s public key YA?
(ii)If user B has private key XB=6. What is B’s public key YB?
8. Describe RSA Algorithm in detail and for the given values trace the sequence of calculation in RSA algorithm P=7, Q=13, E=5,M=10.
9. What is the shared secret key? Also write the algorithm.
10. Explain in detail EIGamal Public key cryptosystem in example.
11. Describe Digital signature algorithm & show how signing &verification is done using DSS
12. Explain the Characteristics and types of firewall in detail
13. Write about virus and related threats in detail
14. Discuss the architecture of Distributed Intrusion detection Systems with necessary diagrams
15. Explain Secure Socket Layer in detail
16. Explain Pretty Good Privacy in detail.
17. Explain PKI in detail
18. Explain about S/MIME in detail
19. Explain secure hash Algorithm in detail
20. Illustrate Birthday Attacks in detail.

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