2019 Science & Technology - Information Technology/Cybersecurity

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 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 only
• 2 and 3 only
• 3 only
• 1, 2 and 3