A digital signature is
A) the encrypted mathematical value of the message sender's name
B) derived from the digest of a document that has been encrypted with the sender's private key
C) the computed digest of the sender's digital certificate
D) allows digital messages to be sent over analog telephone lines

Question

Quizplus · Accepted Answer

A digital signature is derived from the digest of a document that has been encrypted with the sender's private key. It provides authentication of the sender's identity, integrity of the message, and non-repudiation of the message. The recipient can use the sender's public key to verify the digital signature and confirm the authenticity of the message.

A Digital Signature Is