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ISRO - Indian Space Research Organization eProcurement / Online Tenders

A valid class 3 digital signature certificate (Class 3 DSC) is required to access the Indian Space Research Organization (ISRO) e-procurement portal. For Indian Space Research Organization (ISRO) e-tendering in India, vendors need both the categories of digital signature certificates – signing and encryption. The signing digital certificate is used by the vendors for the purpose of logging onto the official portal. For submission of bids, an encryption digital certificate is required.
Registered users cannot access the ISRO e-procurement system with expired certificates. The digital signature certificate have to be valid. When vendors purchase a new digital signature certificate, they are required to send the public key for the new certificate using their unique password. For this the tenderers must visit the ‘New certificate’ link on the official Indian Space Research Organization (ISRO) e-procurement portal.
Bids submitted by vendors are encrypted to protect their confidential information. The information can be decrypted with a digital signature certificate. In case the users need to decrypt some information, they must possess copies of their old certificates, along with the respective public keys. New/ renewed certificates cannot be to used the decrypt information which was encrypted using old/ expired certificates.
digital signature certificates contribute towards making the portal secure. Bids which are encrypted and submitted by one bidder, cannot be decrypted and viewed by another user.
Guidelines for Indian Space Research Organization (ISRO) e-procurement :
  1. More than one employee of an organisation can register on the Indian Space Research Organization (ISRO) e-tendering portal. The first user is referred to as the primary user. This user has to authorise registration of other users from the same company. An additional security feature ensures that bids which are encrypted by one user cannot be decrypted by another user.
  2. The primary user can also authorise a registered user to function as a primary user. This handover is especially useful when he/ she leaves the organisation. Thus the new primary user will receive all the future email communication for Indian Space Research Organization (ISRO) e-procurement. Alternately, an email request can be sent to The alternate user who wishes to become the new primary user, must forward the email along with company name and user ID.
  3. Employees registering on the behalf of their companies must provide their official e-mail IDs. Free mail addresses provided by mail service providers such as Yahoo or Gmail are not acceptable.
  4. Vendors cannot submit their bids offline. Bid templates for the  Indian Space Research Organization (ISRO) e-procurement can be filled only online and saved in encrypted format. Bid templates from the official portal cannot be downloaded or filled offline. PDF files are not secure as they are not encrypted and hence unsafe for furnishing price details. PDF files attached by the vendor are treated as supporting documents. If the bid price can be seen in the documents submitted by the tenderer, the bid may be considered invalid leading to rejection.

A valid digital signature certificate can be purchased from a certifying authority. Capricorn is a Certifying Authority (CA) authorised by the Controller of Certifying Authority (CCA) for issuance of Digital Signature Certificates in India. offer variety of certificate to Individuals, Organizations and Foreigners in both Class 2 and Class 3 along with digital signatures for specific needs such as Income Tax filing, MCA, e-tendering, e-procurement, e-bidding, e-Auction, gst, roc, epf and Foreign Trade.

Digital Signature Mart through its Online Portal offers Digital Signature Certificates under the Capricorn CA. Digital Signature Mart offers both Class 2 and Class 3 Digital Signature Certificates which is as per the guidelines issued by the CCA (Controllers of Certifying Authorities). Currently we are providing Capricorn Digital signatures in more then 20 cities through our channel partners. We are also most committed company to provide Digital Signature in short time.

At Digital Signature Mart, we provide Class 2 Digital Signature Certificates and Class 3 digital signature certificates which are valid for one year, two years and three years, depending upon your requirement. Using our user-friendly online portal you can even either a signing digital signature certificate or a signing and encryption digital signature certificate. Buy and apply for a digital signature certificate at Digital Signature Mart.