Digital Signature Certificates

A Digital signature authenticates electronic documents in a similar manner a handwritten signature authenticates printed documents. This signature cannot be forged and it asserts that a named person wrote or otherwise agreed to the document to which the signature is attached. The recipient of a digitally signed message can verify that the message originated from the person whose signature is attached to the document and that the message has not been altered either intentionally or accidentally since it was signed. Also, the signer of a document cannot later disown it by claiming that the signature was forged. In other words, digital signatures enable the "authentication" and “non-repudiation” of digital messages, assuring the recipient of a digital message of both the identity of the sender and the integrity of the message.

A digital signature is issued by a Certification Authority (CA) and is signed with the CA's private key. A digital signature typically contains the: Owner's public key, the Owner's name, Expiration date of the public key, the Name of the issuer (the CA that issued the Digital ID), Serial number of the digital signature, and the digital signature of the issuer. Digital signatures deploy the Public Key Infrastructure (PKI) technology. If you file electronically using digital signature you do not have to submit a physical copy of the return.

CLASS-2

Class-2 Certificates are issued to partners / affiliates / employees / customers of business and government organizations who acknowledge the responsibility of verifying the accuracy of the information submitted by their partners / affiliates / employees / customers.
Class-2 certificates are issued by authorised RA or an organization for whom a Sub-CA has been set up. This organization requests the issue of Digital Certificates for partners / affiliates / employees / customers of the organization from certifying authority. Application Form

CLASS-3

Certificates are issued to individuals, companies and government organizations and can be used both for personal and commercial purposes. They are typically used for electronic commerce applications where security is a major concern.
Class 3 digital signature is used for e-tendering or e-procurement by vendors of various companies like Air India, Petroleum Companies & Indian Railways. Class 3 Digital Signature is issued by Certifying Authority which is TCS, Sify, (n) Code, MTNL & e-Mudhra. Application Form

DGFT- Only for Export-Import community. Benefits of using DGFT- Application Form

Cost Saving
Convenience
Security
Reduce processing time