LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034
M.Sc. DEGREE EXAMINATION – COMPUTER SC.
SECOND SEMESTER – APRIL 2011
CS 2813 – CRYPTOGRAPHY & NETWORK SECURITY
Date : 12-04-2011 Dept. No. Max. : 100 Marks
Time : 1:00 – 4:00
SECTION-A
ANSWER ALL THE QUESTIONS: (10 x 2 = 20)
- Write down the difference between services and mechanisms
- What is the functionality of X.800
- What are the characteristics of a random number?
- Write down the categories of public key Cryptosystems.
- List out the message authentication functions
- What are birthday attacks?
- What are the parts of the signature compound?
- What are the components of private key ring?
- What are honey pots?
- What is Zombie?
SECTION-B
ANSWER ALL THE QUESTIONS: (5 x 8 =40)
- a) Explain cryptographic systems and cryptanalysis
(OR)
- b) Explain OSI security architecture
- a) What is meet in the middle attack and how it is resolved?
(OR)
- b) Write down the requirements of Cryptography.
- a) Explain authentication requirements
(OR)
- b) Explain Message authentication code.
14.a) Write down the applications of IPSec.
(OR)
- b) Explain SSL architecture.
- a) Explain Intrusion Techniques.
(OR)
Explain password protection methods
SECTION-C
ANSWER ANY TWO QUESTIONS: (2 x 20 = 40)
- i)) Explain the modes of operation of Block Cipher
ii)Explain RC5 algorithm
- i) Explain Diffie- Hellman Key exchange algorithm
- ii) Explain Digital Signature in Secured Electronic Transaction.
- i) Explain different types of Firewalls.
ii)Explain Simplified DES in Detail.