Digital Signature is an electronic form of fingerprints or signature. Basically, it is a way to authenticate your electric documents such as e-mail, spreadsheet, text-file etc.
A Digital Signature Certificate provides to prove identity, to access services on the internet or to sign documents digitally. The certificate contains information about the user’s identity (name, pin code, country, email address, the date the certificate was issued and the name of the certifying authority).
Need of Digital Signature
Digital Signature Certificate authenticates your identity electronically. Digital Signature use a standard format, to provide a high level of security and universal acceptance. The use of standard and accepted format called PKI or Public Key Infrastructure. By this, we can secure our email and web-based transactions. Commonly it is used to signing web forms, e-tendering websites of government departments, e-filing income tax return etc.
Digital Signature Certificate is issued by the licensed certifying authority under section 24 of the Information Technology Act, 2000.
How Digital Signature works?
Digital Signature is like Handwritten Signature, which is unique for every individual. A Certified Authority provide you Digital Signature Certificate, which works totally on Mathematical Algorithms. When user signs on a document, the user’s private key create the electronic signature on the document. The Mathematical Algorithm acts like a cipher and encrypts that signature data. The resulting encrypted data is the Digital Signature.