What is digital signature? Describe digital signature with block diagram.
Subject Computer and Network Security
NU Year Set: 5.(a) Marks: 1+5 Year: 2015

Digital Signature is a process that guarantees that the contents of a message have not been altered in transit.

When you, the server, digitally sign a document, you add a one-way hash (encryption) of the message content using your public and private key pair.

Your client can still read it, but the process creates a "signature" that only the server's public key can decrypt. The client, using the server's public key, can then validate the sender as well as the integrity of message contents.


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