Multiple choice

Which of the following best describes a digital signature?

  1. A scanned signature

  2. Handwritten signature in machine language

  3. Signature in binary form

  4. Encrypting information

  5. Electronic signature
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A digital signature is a mathematical scheme for demonstrating the authenticity of a digital message or document. A valid digital signature gives a recipient reason to believe that the message was created by a known sender such that the sender cannot deny having sent the message (authentication and non-repudiation) and that the message was not altered in transit (integrity).

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