What is most commonly used for the goal of nonrepudiation in cryptography?
A) Block cipher
B) Secret key
C) PKI
D) Digital signature

Question

Quizplus · Accepted Answer

Digital signature is the most commonly used method for non-repudiation in cryptography. It provides proof of the origin and integrity of a message or data and ensures that the sender cannot deny sending the message or data. It uses public key encryption technology to create a unique digital signature that can only be produced by the sender, and verified by the recipient using the sender's public key. Block cipher and secret key encryption are used for confidentiality, while PKI is used for identity verification and authentication.

What Is Most Commonly Used for the Goal of Nonrepudiation