Digital Signatures for e-Tendering — Complete Guide
Bidkoo Team
Editorial
What Is a Digital Signature Certificate?
A Digital Signature Certificate (DSC) is the electronic equivalent of a physical signature. It authenticates the identity of the signer and ensures the integrity of the signed document. In India, DSCs are issued by Certifying Authorities (CAs) licensed by the Controller of Certifying Authorities (CCA) under the Information Technology Act, 2000. For e-tendering on government portals, a Class 3 DSC is mandatory. Class 3 DSC provides the highest level of assurance and is required for signing and encrypting bid documents submitted on e-procurement portals such as CPPP, GeM, and state portals.
How to Obtain a Class 3 DSC
To obtain a Class 3 DSC, you need to apply through a licensed Certifying Authority such as eMudhra, Sify, n(Code), or Capricorn. The process involves filling out an online application form, submitting identity proof (PAN card, Aadhaar), address proof, and a passport-sized photograph. For organisations, you also need the company registration certificate and authorisation letter. Video verification or in-person verification is required for Class 3 DSC. The entire process typically takes 1-3 working days. A Class 3 DSC costs between Rs 1,500 and Rs 3,500 for a two-year validity period, depending on the CA and whether you need signing-only or both signing and encryption capabilities.
Using and Maintaining Your DSC
Once you receive your DSC token (USB device), you need to install the token driver and configure it on your computer. Most e-procurement portals require specific browser settings — typically Internet Explorer or a compatible browser with Java enabled. Register your DSC on the respective e-procurement portal before the tender submission deadline. Common issues include expired certificates, incompatible browser versions, Java security settings, and token driver problems. Always keep your DSC token safely, never share the PIN with others, and renew your certificate well before it expires. Keep a backup of your DSC registration on the portals and maintain a record of the portals where your DSC is registered.
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