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Subject

Cryptography

The course introduces the underlying the principles and design of cryptosystems. The course covers the basics concepts of cryptography including: traditional ciphers, block ciphers, stream ciphers, public and private key cryptosystems. The course also includes the theory of hash functions, authentication systems, network security protocols and malicious logic.

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Describe the Fiestel Cipher structure. Given the key {2B, 7E, 15, 16, 28, AE, D2, A6, AB, F7, 97, 66, 01, 02, 03, 04}, compute the first 4 byte of next key after first iteration, using the following S-Box in AES.

0 1 2 3 4 5 6 7 8 9 A B C D E F
0 63 7C 77 7B F2 6B 6F C5 30 01 67 2B FE D7 AB 76
Not Answered Cryptography Asked on 2082 Exam
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List the properties of hash function. Describe the algorithm for SHA -1.

Not Answered Cryptography Asked on 2082 Exam
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Illustrate the man in middle attack in Diffie – Hellman key exchange protocol. Assume the prime number be 19 and 10 as its primitive root. Select 5 as private key and 4 as random integer. Find the cipher text of M = 2 using Elgamal crypto system.
Not Answered Cryptography Asked on 2082 Exam
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Define authentication system. Discuss about challenge response system.

Not Answered Cryptography Asked on 2082 Exam
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What is digital certificate? Discuss the certificate life cycle.
Not Answered Cryptography Asked on 2082 Exam
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List and explain the types of firewall.
Not Answered Cryptography Asked on 2082 Exam
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Describe the working mechanism of digital signature algorithm.
Not Answered Cryptography Asked on 2082 Exam
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State Fermat’s theorem with example. What is the implication of discrete logarithm?
Not Answered Cryptography Asked on 2082 Exam
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Explain any two modes of block cipher encryption.
Not Answered Cryptography Asked on 2082 Exam
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Describe any three types of malicious logic.
Not Answered Cryptography Asked on 2082 Exam
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