This document contains an examination for an Information Security course. It has two parts: Part A with short answer questions worth 25 marks, and Part B with longer answer questions worth 50 marks total. Part B questions cover topics like symmetric and asymmetric cryptography, transposition ciphers, the Blowfish algorithm, RSA encryption/decryption, secure hash algorithms like SHA, the Kerberos protocol, PGP, IPsec, secure payment transactions, and firewall implementations. Students must answer all of Part A and choose one question from each unit in Part B.
This document contains an examination for an Information Security course. It has two parts: Part A with short answer questions worth 25 marks, and Part B with longer answer questions worth 50 marks total. Part B questions cover topics like symmetric and asymmetric cryptography, transposition ciphers, the Blowfish algorithm, RSA encryption/decryption, secure hash algorithms like SHA, the Kerberos protocol, PGP, IPsec, secure payment transactions, and firewall implementations. Students must answer all of Part A and choose one question from each unit in Part B.
This document contains an examination for an Information Security course. It has two parts: Part A with short answer questions worth 25 marks, and Part B with longer answer questions worth 50 marks total. Part B questions cover topics like symmetric and asymmetric cryptography, transposition ciphers, the Blowfish algorithm, RSA encryption/decryption, secure hash algorithms like SHA, the Kerberos protocol, PGP, IPsec, secure payment transactions, and firewall implementations. Students must answer all of Part A and choose one question from each unit in Part B.
This document contains an examination for an Information Security course. It has two parts: Part A with short answer questions worth 25 marks, and Part B with longer answer questions worth 50 marks total. Part B questions cover topics like symmetric and asymmetric cryptography, transposition ciphers, the Blowfish algorithm, RSA encryption/decryption, secure hash algorithms like SHA, the Kerberos protocol, PGP, IPsec, secure payment transactions, and firewall implementations. Students must answer all of Part A and choose one question from each unit in Part B.
R13 JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD B. Tech III Year II Semester Examinations, December - 2017 INFORMATION SECURITY (Computer Science and Engineering) Time: 3 hours Max. Marks: 75
Note: This question paper contains two parts A and B.
Part A is compulsory which carries 25 marks. Answer all questions in Part A. Part B consists of 5 Units. Answer any one full question from each unit. Each question carries 10 marks and may have a, b, c as sub questions.
PART - A (25 Marks)
1.a) Define Non Repudiation. [2]
b) Write a short notes on steganography. [3] c) Define linear cryptanalysis. [2] d) Discuss about Electronic code book mode? [3] e) Define Message Authentication Code. [2] f) Illustrate about biometric authentication. [3] g) What is IP Security? [2] h) Discuss about the concept of combining security associations. [3] i) What is Firewall? [2] j) Write short notes on virtual elections. [3]
PART - B (50 Marks)
2. Compare and Contrast between Symmetric and Asymmetric key cryptography. [10] OR 3. Give an example to explain the concept of transposition ciphers in detail. [10]
4. With a neat diagram explain how encryption and decryption are done using Blowfish algorithm? [10] OR 5. Given two prime numbers p=5 and q=11, and encryption key e=7 derive the decryption key d. Let the message be x=24. Perform the encryption and decryption using R.S.A algorithm. [10]
6. Give a neat sketch to explain the concept of Secured Hash Algorithm (SHA). [10] OR 7. Client machine C wants to communicate with server S. Explain how it can be achieved through Kerberos protocol? [10]
WWW.MANARESULTS.CO.IN 8. How the messages are generated and transmitted in pretty good privacy (PGP) protocol? Explain with clear diagrams. [10] OR 9. Draw the IP security authentication header and explain the functions of each field. [10]
10. Explain the steps involved in performing Secure Inter-branch Payment Transactions. [10] OR 11. List the characteristics of a good firewall implementation? How is circuit gateway different from application gateway? [10]
