basics of digital signature

1. Digital Signature
By
Naveen Kumar .V

2. Digital Signature
We have been using handwritten signatures to authenticate
handwritten or typed messages in the physical world for a long time.
Their main use is to bind the signatory with a particular message.
Digital Signature accomplishes the same thing with digital messages.
The signatory, a person or an entity, is bound to digital data.
This binding is verifiable by the receiver or a third party, if necessary.

4. Let’s suppose you have to send a message to someone in ABC Office.

6. "Key Pair", in an asymmetric crypto system, means a private key
and its mathematically related public key, which are so related that
The public key can verify a digital signature created by the private
key;

7. Basic Encryption Process

9. Digital signature Process

10. Digital signature Process

11. Same