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Welcome to the Number Theory and Cryptography MCQs Page

Dive deep into the fascinating world of Number Theory and Cryptography with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Number Theory and Cryptography, a crucial aspect of Discrete Mathematics. In this section, you will encounter a diverse range of MCQs that cover various aspects of Number Theory and Cryptography, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within Discrete Mathematics.

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Check out the MCQs below to embark on an enriching journey through Number Theory and Cryptography. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of Discrete Mathematics.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Number Theory and Cryptography. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Number Theory and Cryptography MCQs | Page 11 of 13

Explore more Topics under Discrete Mathematics

Q101.
How many bytes of the secret key is generated using Diffie-Hellman encryption/decryption scheme?
Discuss
Answer: (a).256
Q102.
In which of the following systems, encryption slower than decryption?
Discuss
Answer: (b).parabolic curve cryptography
Q103.
If there are 2⁡⁢ cipher texts per plain text and a total of 2¹βΈ plaintexts of length 18 exists. Then determine the number of distinct ciphertexts?
Discuss
Answer: (b).2⁷⁴
Q104.
TEA cipher uses which of the following structure?
Discuss
Answer: (c).feistel structure
Q105.
Let A’s public key is n=6, 736, 180, 7817, 961, 456, 267 and e = 5 and B sends the ciphertext. c = 456, 871, 122, 391, 882, 538 to A. Determine B’s message in numeric format?
Discuss
Answer: (c).770190.04
Q106.
In encryption, which of the following is the best text encoding technique?
Discuss
Answer: (c).Unicode technique
Q107.
_______ are used as the base of the Public Key Infrastructure.
Discuss
Answer: (c).X.509 certificates
Q108.
The default key size of RC2 Feistel cipher is _______
Discuss
Answer: (c).64 bytes
Q109.
How many combinations of keys can be constructed from a 72 ciphertext stream cipher?
Discuss
Answer: (d).2556
Q110.
What is the block size of RC6 Feistel block cipher?
Discuss
Answer: (b).128 bits

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