UGC NET CSE | July 2018 | Part 2 | Question: 47

Question

In Challenge-Response authentication the claimant ____

• A. Proves that she knows the secret without revealing it
• B. Proves that she does not know the secret
• C. Reveals the secret
• D. Gives a challenge

Comments

i think it's answer is option A

first, the challenge response authentication is basically a knowledge of secret value and you can connect it with a entity authentication. The simplest example of a challenge–response protocol is password authentication, where the challenge is asking for the password and the valid response is the correct password.

the claimant(the claimant authenticates to a system or application over a network. The claimant had to be actually working when they claim.) proves that she knows a secret without actually sending it to the entity. 

Answer 1

option (A) is correct

In challenge response authentication the claimant proves that she knows the secret key without sending it or revealing it.

refer Forouzan for more details

Answer 2

Option (1) Proves that she knows the secret without revealing it.

Answer 3

Challenge-Response authentication is a computer security protocol in which one party ask a question and another party must provide a valid answer. I.e. she knows the secret without revealing it or will provide the secret when it is asked.
So, option (A) is correct.