1. CONCEPT OF DIGITAL SIGNATURE

2. DIGITAL SIGNATURE A digital signature—a type of electronic signature—is a mathematical algorithm routinely used to validate the authenticity and integrity of a message (e.g., an email, a credit card transaction, or a digital document).

3. THE WORKING MECHANISM OF DIGITAL SIGNATURE 1.No sharing of private keys 2.Based on public key infrastructure 3.Two keys, private and public keys are generated 4.To sign digitally, sender shares public keys to the receiver 5.Content run through hash, algorithm creates a unique array called digest. 6.Digest is encrypted by sender's private key.

4. Advantage of Digital Signature Save time and money SecurityTime stamp Happier end user Easy to use

5. Disadvantage of digital signature ExpiryCertificatesSoftwareLawCompatibility

6. Objective of Digital Signature To generate signature To verify the signature To define security service To achieve authentication More secure

7. Digital Signature in Nepal  Who in Nepal is responsible to look after digital signature?  Do we need to purchase digital signature or ID?  How can Nepal’s business benefit from digital signature?

8. Thank you for your patience !!