E-mudra digital signature certificates eMudhra is a licensed Certifying Authority (CA) of India issuing digital signature certificates. eMudhra allows users to buy Digital Signatures for MCA ROC filing eMudhra certificates can be used and relied in any online or offline applications. The organization (or Individual) using such application is termed as Relying Party. The application can be an online application hosted on a web server, or offline desktop application, or third-party applications like Adobe PDF reader, etc. All such applications are expected to make necessary CRL / OCSP check, in addition to validating the trust chain, the expiry and the subject details of the certificate.