Jawaharlal Nehru Technological University Anantapur 2010-1st Sem B.Tech Code :R7411206 2 IV ester(R07)Regular s, ember/ember INFORMATION SECURITY - Question Paper

Code :R7411206 2
IV B.Tech I Semester(R07)Regular Examinations, November/December 2010
info SECURITY
(Information Technology, Computer Science & Systems Engineering)
Time: three hours Max Marks: 80
ans any 5 ques.
1. (a) discuss TCP session hijacking.
(b) discuss man-in-the-middle attack .
2. (a) Consider the subsequent.
Plaintext = \ Network Security "
Key = \ Computer ".
obtain the corresponding cipher text using play fair cipher.
(b) discuss meet-in-the-middle attack in Triple DES.
3. Consider a Di±e- Heuman scheme with a common prime q=11, a primitive root ® =2.
(a) Show that two is a primitive root of 11.
(b) If user ` A' has public key YA=9, what is A's private key XA ?
(c) If user `B' has public key YB=3, what is the shared secret key K ?
4. discuss DSA algorithm.
5. (a) Draw and discuss the ¯elds in ESP header .
(b) discuss about Oakley Key determination protocol.
6. (a) discuss about SSl archietecture.
(b) discuss about secure electronic commerce components.
7. discuss about virus countermeasures.
8. (a) elaborate the different kinds of ¯re walls .
(b) discuss about Trusted system.

Earning:   Approval pending.