The Controller of Certifying Authorities operates the National Repository of Digital Signatures (NRDC) as required under Section 20 of the IT Act 2000.  Copies of all Digital Signature Certificates and the corresponding Certificate Revocation List (CRL)  issued by all licensed Certifying Authorities in the country are maintained in the NRDC.

Access to these Digital Signature Certificates is provided with a search  facility so that the public keys contained in these certificates are available to any member of the public.

The NRDC is updated through weekly submission by all the licensed CAs as prescribed in the Guidelines for submission to NRDC. For latest Information users and relying parties are advised to  verify the certificates and CRL from the website of the issuing CA.