What do you mean by digital signature? What are the properties a digital signature should have?
Subject Computer and Network Security
NU Year Set: 3.(b) Marks: 1+5 Year: 2017

A digital signature (not to be confused with a digital certificate) is a mathematical technique used to validate the authenticity and integrity of a message, software or digital document.

Properties of Digital Signatures

Unforgivable

Authentic

Can't be modified once sent

Not reusable

Prevent repudiation

 

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