Q3. Explain public-key cryptosystem in detail.

This is question 3 (7 marks) from the GTU Information Security BE Winter 2018 question paper. Subject code: 160702.

Q3. Explain Rail fence Cipher technique.

This is question 3 (7 marks) from the GTU Information Security BE Winter 2018 question paper. Subject code: 160702.

This is question 4 (null marks) from the GTU Information Security BE Winter 2018 question paper. Subject code: 160702.

Information Security | B.E. Semester VI Winter 2018 | GTU Papers

Q: Q1. Explain data confidentiality ,data authentication and non-repudiation

This is question 1 (7 marks) from the GTU Information Security BE Winter 2018 question paper. Subject code: 160702.

Q: Q1. What is cryptography? Briefly explain the model of Asymmetric Cryptosystem

This is question 1 (7 marks) from the GTU Information Security BE Winter 2018 question paper. Subject code: 160702.

Q: Q2. Explain monoalphabetic cipher and polyalphabetic cipher by giving an example.

This is question 2 (7 marks) from the GTU Information Security BE Winter 2018 question paper. Subject code: 160702.

Q: Q2. List various modes of operations of block cipher. Explain any three of them briefly. OR

This is question 2 (7 marks) from the GTU Information Security BE Winter 2018 question paper. Subject code: 160702.

Q: Q2. What is the purpose of S-box in DES? Explain the avalanche effect in DES.

This is question 2 (7 marks) from the GTU Information Security BE Winter 2018 question paper. Subject code: 160702.

Explain data confidentiality ,data authentication and non-repudiation

[7 marks]

What is cryptography? Briefly explain the model of Asymmetric Cryptosystem

[7 marks]

Explain monoalphabetic cipher and polyalphabetic cipher by giving an example.

[7 marks]

List various modes of operations of block cipher. Explain any three of them briefly. OR

[7 marks]

What is the purpose of S-box in DES? Explain the avalanche effect in DES.

[7 marks]

What is the limitation of Electronic Codebook Mode (ECB)? explain CBC mode in detail.

[7 marks]

Explain public-key cryptosystem in detail.

[7 marks]

Explain Rail fence Cipher technique.

[7 marks]

Describe MD5 message digest algorithm. What is message authentication code? What are the requirements for MACs?

[7 marks]

[ marks]

BBrriieeffllyy dexispcluasins MDiAffCie -bHaseelldm oann DkeEyS e. xchange. Is it vulnerable to man in the middle attack? Justify.

[7 marks]

What characteristics are needed in secure hash function? Explain the concept of simple hash function.

[7 marks]

What is authentication? How it can be done using cryptography?

[7 marks]

Explain the general format of PGP(Pretty Good Privacy) message

[7 marks]

What are the requirements of digital signature? Explain the concept of07 arbitrated digital signature.

[ marks]

Explain SSL architecture.

[7 marks]

What problem was Kerberos designed to address? Briefly explain how session key is distributed in Kerberos.

[7 marks]

Information Security — Winter 2018

Questions17

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