STUPIDSID
1 (a)
Define the following examples
i) Substitution cipher
ii) Poly-alphabetic cipher
iii) Salami attack
iv) Session Hijacking
i) Substitution cipher
ii) Poly-alphabetic cipher
iii) Salami attack
iv) Session Hijacking
10 M
1 (b)
With the help of examples explain non-malicious programming errors.
5 M
1 (c)
Define the goals of security and specify mechanisms to archive each goal.
5 M
2 (a)
In an RSA system the public key (e,n) of user A is defined as (7,119). Calculate Φn and private key d. what is the cipher text when you encrypt message m=10, using the public key?
10 M
2 (b)
Give the format of X 509 digital certificate and explain the use of a digital signature in it.
5 M
2 (c)
Encrypt "The key is hidden under the door" using playfair cipher with keyword "domestic".
5 M
3 (a)
Explain how a key is shared between two parties using Diffie-Hellman by exchange algorithm. What is the drawback of this algorithm?
10 M
3 (b)
Differentiate between i) MD-5 and SHA ii) Firewall and IDS.
10 M
4 (a)
Explain working of DES detailing the Fiestel structure.
10 M
4 (b)
What is a Denial of service attack. What are the different ways in which an attacker can mount a DOS attack on a sytem?
10 M
5 (a)
List the functions of the different protocols of SSL. Explain the handshake protocol.
5 M
5 (b)
How does PGP achieve confidentially and authentication in emails?
5 M
5 (c)
Differentiate between the transport mode and tunnel mode of IP Sec and explain how authentication and confidentiality are achieved using IP Sec.
10 M
Write in brief about (any four):
6 (a)
Operating System Security.
5 M
6 (b)
Buffer overflow attack.
5 M
6 (c)
IP spoofing
5 M
6 (d)
Viruses and their types.
5 M
6 (e)
Key generation in IDEA.
5 M
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