Consider the following statements A digital signature is

Q. Consider the following statements, A digital signature is

1. an electronic record that identifies the certifying authority issuing it
2. used to serve as a proof of identity of an individual to access information or server on the Internet
3. an electronic method of signing an electronic document and ensuring that the original content is unchanged.

Which of the statements given above is/are correct?

1. 1 only
2. 2 and 3 only
3. 3 only
4. 1, 2 and 3

Answer: 1, 2 and 3

Digital Signature

A digital signature or digital signature scheme is a type of asymmetric cryptography. For messages sent through an insecure channel, a good implementation of digital signature algorithm is the one that makes the receiver believe that the message was sent by the claimed sender, and trust the message.

A digital signature is a digital code (generated and authenticated by public key encryption) which is attached to an electronically transmitted document to verify its contents and the sender's identity.