Welcome to the Message Authentication Codes and Key Management MCQs Page

Dive deep into the fascinating world of Message Authentication Codes and Key Management with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Message Authentication Codes and Key Management, a crucial aspect of Cryptography and Network Security. In this section, you will encounter a diverse range of MCQs that cover various aspects of Message Authentication Codes and Key Management, 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 Cryptography and Network Security.

Check out the MCQs below to embark on an enriching journey through Message Authentication Codes and Key Management. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of Cryptography and Network Security.

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

Message Authentication Codes and Key Management MCQs | Page 4 of 11

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Wireless Network Security

Q31.

Which of the following is not true for whirlpool hashing function?

It is a two way hashing function

It is based on a 512 bit block cipher

The block cipher is similar to AES structure

It is resistant to differential attacks

Discuss

Answer: (a).It is a two way hashing function

Q32.

The expected workload of generating a collision is of the order of ____________ executions of Whirlpool.

2^(n/2)

2^(n-1)

2^(n)

2^(2n)

Discuss

Answer: (a).2^(n/2)

Q33.

Given a message, the expected workload of finding a message that hashes to that value is of the order ____________

2^(n/2)

2^(n-1)

2^(n)

2^(2n)

Discuss

Answer: (c).2^(n)

Q34.

Given a message and its n-bit hash result, the expected workload of finding a message that hashes to the same value is of the order _______________

2^(n/2)

2^(n-1)

2^(n)

2^(2n)

Discuss

Answer: (c).2^(n)

Q35.

The message is padded to

1024 bits

512 bits

Odd multiple of 256 bits

Odd multiple of 512 bits

Discuss

Answer: (c).Odd multiple of 256 bits

Q36.

The length of the message is appended to the message. What is the size of this length?

256 bits

512 bits

128 bits

1024 bits

Discuss

Answer: (a).256 bits

Q37.

The hash matrix is of the size

16 × 8

16 × 4

8 × 8

4 × 16

Discuss

Answer: (c).8 × 8

Q38.

The 8 × 8 hash matrix holds values of size

16 bits

32 bits

8 bits

4 bits

Discuss

Answer: (c).8 bits

Q39.

The hash matrix of 8 × 8 is preferred over a 16 × 4 matrix because

it is symmetric

it is smaller in size

it is faster in computation

none of the mentioned

Discuss

Answer: (c).it is faster in computation

Q40.

How many rounds are there in one Whirlpool Iteration?

Discuss

Answer: (b).4

Page 4 of 11

Welcome to the Message Authentication Codes and Key Management MCQs Page

Message Authentication Codes and Key Management MCQs | Page 4 of 11

Explore more Topics under Cryptography and Network Security

Cryptography Basics

Encryption Techniques

Data Encryption Standard

Number Theory and Finite Fields

Advanced Encryption Algorithm

Pseudorandom Number Generation and Stream Ciphers

Public Key Cryptography and RSA

Cryptographic Hash Functions

Network Security Concepts

Security in the Internet

Wireless Network Security

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