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Digital Signature Guide5 min read• August 2026

What is a Digital Signature Certificate (DSC) and How Does it Work?

A comprehensive guide explaining Class 3 Digital Signatures, USB Crypto tokens, eKYC verification, and legal validity under the Indian IT Act 2000.

A Digital Signature Certificate (DSC) is a secure digital key issued by licensed Certifying Authorities (CA) in India to validate and authenticate the identity of the person holding the certificate. Digital signatures use public key cryptography to ensure that electronic documents like Tax Returns, GST Filings, and MCA documents cannot be tampered with once signed. ### Why Do You Need a Class 3 DSC? Class 3 is the highest security level for digital certificates in India. It is mandatory for: 1. Income Tax Filing & e-Verification 2. GST Registration & Monthly Return Signatures 3. MCA21 / ROC Director Signatures 4. EPFO Employer Portal Operations 5. eProcurement & Government Tender Bidding ### How to Get Your DSC Issued in 30 Minutes With Sukirthi Technologies, obtaining your DSC is 100% paperless. You only need your PAN Card, Aadhaar Card, active Mobile Number, and Email. Contact our team via WhatsApp to start your quick 20-minute video verification!

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