Digital Signature

1. Digital Signature is an attachment to the electronic document which can be viewed as a signature. Once a document is signed, its data cannot be altered without invalidating the signature. Digital Signature is created using signer’s key for encrypting the document.
2. It encrypts documents with digital codes that are particularly difficult to duplicate.
3. Digital signature takes the concept of traditional paper based signing and turns it into an electronic fingerprint.
4. It is used to validate the authenticity and integrity of a message, software and digital document
5. Figure shows the process of digital signature.

Application:

1. Used in E-Procurement.
2. Used in banks and Financial Institute.
3. Online income tax form filling.
4. Online railway ticket booking.