Information Security — DU B. Voc – Software Development Previous Year Question Papers

Explain One way hash function. 5 What is the role of honeypot in network security? 5 c) Define Computer Security with its key objectives. (d) What are vulnerabilities? Explain any two vulnerabilities. 5 e) Write down the differences between Active and Passive Attack. f) Fill in the blanks: (i) Interruption is an attack on (i1) DES is _algorithm. (ii) The SHA-2 family includes several hash functions, such as _ and SHA-512. (iv) The Diffie Hellman Key exchange allows two parties to securely share a _ key over an insecure channel. (v) S/MIME uses algorithm for encrypting session keys 2 a) corresponding private key d and then decrypt the ciphertext C=5. Given the following RSA public key (p=7, q=11), calculate the 7 b) What is the difference between a Worn and a Bot? Describe how each spreads and the types of damage they can cause to a system or network. 3 a) How to create and use Digital Signatures? Explain its key components A user receives a Digital Certificate containing: Message (M) = 4 and n=33. Verify whether the certificate is valid using the RSA Digital Signature (S) = 16, Certification Authority (CA) public key: e=3. b) Write down the security issues for user authentication. b) Write short notes on: (b) Digital Certificates - (c) Back Door 5 a) Describe buffer overflow attack. How attackers take advantage of it. and what are its potential consequences? 8 b) What is Heartbeat Protocol? Explain its four general categories to group the attacks. 7 6 Explain the vulnerability of passwords and how can we identify the following attack strategies and countermeasures? For the Diffie-Hellman key exchange, Alice and Bob agree on a prime b) number p=23 and a primitive root g=5. Alice's private key is a=6, and Bob's private key is b=15 Compute the shared secret key.