Get All Week Cryptographic Hash and Integrity Protection Quiz Answers
Table of Contents
Cryptographic Hash and Integrity Protection Week 01 Quiz Answers
Quiz 1: Cryptographic Hash Function
Q1. Which of the following statements are false for hash functions?
Q2. Which of the following terms are used to describe the output of the hash function?
ViewFingerprint
Hash value
Q3. Which of the following states that for any given input, it is computationally infeasible to find another input that produces the same hash as the given input
ViewQ4. Which of the following statements are true for cryptographic hash function requirements?
View2.Any hash function that is strong collision resistant is also weak collision resistant.
Q5. When the hash function uses a 1-byte long key, how many computations would it require an attacker to break strong collision resistance?
ViewQ6. When the hash function uses a 1-byte long key, how many computations would it require an attacker to break weak collision resistance?
ViewQ7. When the hash function uses a 1-byte long key, how many computations would it require an attacker to break preimage resistance?
ViewCryptographic Hash and Integrity Protection Week 02 Quiz Answers
Quiz 2: Hash Chain and Hash Tree
Q1. In hash chain, H^n indicates the output of the n-th hash. Suppose H^3 has an error and its value changed. Which of the values would get affected and change?
ViewH^4
H^3
Q2. The server, acting as the verifier, has the value H^n stored for the verification. What is the one-time password that will be used by the user?
ViewQ3. For a hash tree that covers 32 data blocks, how many hash checks do you need to perform to detect the error? Assume that error occurred on only one block.
ViewQ4. For a hash tree that covers 32 data blocks, how many hash checks do you need to perform to detect the error? Assume that error occurred on two distinct blocks.
ViewQ5. For a hash tree that covers 16 data blocks, how many hash checks do you need to perform to localize the error? Assume that error occurred on only one block.
ViewQ6. For a hash tree that covers 128 data blocks, how many hash checks do you need to perform to localize the error? Assume that error occurred on only one block.
ViewQ7. Now the error occurred on two distinct blocks. For a hash tree that covers 16 data blocks, how many hash checks do you need to perform to localize the error?
ViewQ8. Which of the followings are true for hash tree (Merkle tree)? The tree is binary where there are two child nodes for each parent node.
View2.Merkle root changes only if the majority of the data blocks change.
3.Hash tree requires fixed number of data blocks (which are the inputs of the lowest-level hash functions).
4.The computational complexity grows linearly as the number of data blocks increases exponentially.
Quiz 2: Cryptocurrency and TESLA
Q1. Cryptocurrency, e.g., bitcoin, uses the Merkle tree for efficient verification. Which of the following best describes the data (the input to the hash at the lowest level of the tree hierarchy) in cryptocurrency?
ViewQ2. Which of the following does the TESLA broadcasting authentication scheme use? Select all that apply.
View2.Hash chain
Cryptographic Hash and Integrity Protection Week 03 Quiz Answers
Quiz 1: Message Authentication Code
Q1. Which of the following is true about message authentication?
ViewQ2. Which of the following terms is not used interchangeably with message authentication code (MAC)?
ViewQ3. Which of the following is not a reason to use/prefer MAC over symmetric encryption for message authentication?
ViewQ4. A MAC, such as that based on DAA/DES, uses a 56-bit key and a 64-bit MAC code/tag. How many computations would it require for an attacker to brute-force the MAC on average?
View2.2^55
Q5. A MAC, such as that based on DAA/DES, uses a 56-bit key and a 64-bit MAC code/tag. However, now, the key gets updated very frequently; every MAC code that gets produced uses a different key. How many computations would it require for an attacker to brute-force the MAC on average?
ViewQ6. Which of the following is not a security requirement for MAC?
ViewQ7. How is CMAC different from the DAA algorithm? Select all that apply.
View2.CMAC has options for the block ciphers.
3.CMAC provides longer MAC code.
Cryptographic Hash and Integrity Protection Week 04 Quiz Answers
Quiz 1: Digital Signature
Q1. In which of the following threat scenarios, can digital signature be useful (to counter)? Digital signature can also used to ensure time integrity, e.g., protect the integrity of the timestamp.
View2.A network manager, A, transmits a message to a computer, B, under its management. The message instructs computer B to update an authorization file to include the identities of a number of new users who are to be given access to that computer.
3.A message is sent from a customer to a stockbroker with instructions for various transactions.
4.An employee is fired without warning. The personnel manager sends a message to a server system to invalidate the employee’s account. When the invalidation is accomplished, the server is to post a notice to the employee’s file as confirmation of the action.
Q2. Which of the following statements are true about digital signatures?
View2.A digital signature is typically smaller than the data size.
Q3. Which of the following is not a requirement for digital signatures?
ViewQ4. For RSA Signature and Digital Signature Standard (DSS), how does the sender generate the digital signature given the message, p?
ViewCryptographic Hash and Integrity Protection Course Review
In our experience, we suggest you enroll in Cryptographic Hash and Integrity Protection courses and gain some new skills from Professionals completely free and we assure you will be worth it.
Cryptographic Hash and Integrity Protection for free, if you are stuck anywhere between a quiz or a graded assessment quiz, just visit Networking Funda to Cryptographic Hash and Integrity Protection Quiz Answers.
Get All Course Quiz Answers of Machine Learning Specialization
Cryptography and Information Theory Quiz Answers
Symmetric Cryptography Coursera Quiz Answers
Asymmetric Cryptography and Key Management Quiz Answers
Cryptographic Hash and Integrity Protection Quiz Answers
