Question

Responds to a challenge with a function of his/her secret key and the challenge.

a) Symmetric key encryption
b) Asymmetric key encryption
c) Hash function
d) Digital signature

Answer 1

A digital signature is the correct response. It ensures authenticity, integrity, and non-repudiation of a message.

Step-by-step explanation:

The correct answer is d) Digital signature. A digital signature is a cryptographic technique that provides authenticity, integrity, and non-repudiation of a message. It uses the sender's secret key to create a unique and verifiable signature of the challenge. This ensures that the message has not been tampered with and can be traced back to the sender.