Among all classes of DSC, Class-3 Digital Signature offers the highest security. Applicant has option to buy just the signature only, or along with encryption called as "Combo".
Business firms registered outside India need Class-3 Digital Signature to sign official Government documents such as tender submission or Indian Railways. Paper-less process is convenient with faster turnaround time.
To submit high value tenders on government portals, Class-3 DSC is required with encryption combo. If TIA require encryption, applicant must buy Combo : (1) Signature and (2) Encryption.
If encryption is not required, applicant may choose to buy just the Signature Only.
Vendor / Contractor may use Class-3 DSC for logging into tender portal and submit bids. It can be used for registering patents / trademarks as well.
|No||Tender Portals (sample)|
|2||Central Public Procurement Portal (CPPP)|
|3||Bharat Electronics Limited|
|4||GRSE - Garden Reach Shipbuilders & Engineers|
|7||Mazagon Dock Shipbuilders|
|8||Midhan Tenders (eProcurement System for PSUs under MoD)|
|11||Indian Oil e-Tender (IOC)|
|12||Coal India Limited|
|13||Government eAuction System|
|14||Arunachal Pradesh Government Tenders|
|15||Andaman and Nicobar Islands eProcurement|
|16||Assam Government eProcurement Tenders|
|17||Chandigarh UT Tenders|
|18||Dadra & Nagar Haveli eProcurement|
|19||Daman & Diu eProcurement|
|20||Govt of NCT of Delhi eProcurement|
|21||Haryana Government Tenders|
|22||Himachal Pradesh Tenders|
|23||Jammu and Kashmir Tenders|
|29||Madhya Pradesh Tenders|
|39||Tamil Nadu Tenders|
|42||Uttar Pradesh Tenders|
|43||West Bengal Tenders|
|...||Many more tender portals, vendor/contractor must check with TIA on applicable class of DSC required for the bid.|