Digital Signature Certificate (DSC)

Digital Signature Certificate (DSC) is an electronic form of a signature that is used to authenticate the identity of an individual or organization in digital transactions. It ensures the authenticity, integrity, and security of documents shared electronically.

A DSC is issued by a Certifying Authority (CA), such as eMudhra, Sify, or NIC, under the provisions of the Information Technology Act, 2000 in India. It contains details like the holder’s name, public key, issuing authority’s name, validity period, and serial number.

Types of Digital Signature Certificates

Class 1 – Used for basic email communication verification.

Class 2 – Used for filing returns and forms with government departments (now replaced by Class 3).

Class 3 – Used for high-security online transactions like e-tendering, e-auctions, and company filings.

Usage of Digital Signature Certificates

Filing income tax returns, GST returns, and ROC (Registrar of Companies) forms.

E-tendering and e-procurement processes in government and corporate sectors.

Signing digital documents such as contracts, agreements, and official letters.

Securing emails and online transactions to prevent tampering or impersonation.

Authentication of identity while accessing secure websites or portals.

In summary, a DSC acts as a digital equivalent of a handwritten signature, providing security and trust in electronic communications and legal digital documentation.