How to Verify a Digital Signature in a PDF (Step-by-Step Guide)
Learn how to verify a digital signature in a PDF using Adobe Reader. Understand certificate validation, PKI verification, CRL, OCSP checks, and legal validity under the IT Act.
Certifying Authority
What Happens When You Open a Digitally Signed PDF? (Complete Signature Validation Explained)
When you open a digitally signed PDF, your PDF reader performs multiple cryptographic and trust validations to confirm that the document is authentic and has not been altered. These checks happen within seconds but involve complex Public Key Infrastructure (PKI) mechanisms. This article explains exactly what happens behind the scenes when a digitally signed PDF … Read more
Public Key Infrastructure (PKI): The Trust Framework Behind Digital Identity
A professional guide to Public Key Infrastructure (PKI), digital certificates, trust hierarchy, and the role of CAs in secure digital identity.
Critical Services of a Certifying Authority: Defining Priorities, RTO, and RPO
In the digital trust ecosystem, the uninterrupted functioning of a Certifying Authority (CA) is essential to maintain confidence in electronic transactions and digital signatures. Each service operated by a CA—from certificate issuance to real-time status verification—plays a distinct role in ensuring the authenticity, integrity, and non-repudiation of digital communications. This post highlights the most critical … Read more
How to Become a Registration Authority (RA) & Roles of RA in DSC as per CCA Guidelines
A Registration Authority (RA) is an authorized agent that acts as a bridge between the Certifying Authority (CA) and the applicant of a Digital Signature Certificate (DSC). As per the Information Technology (IT) Act, 2000 and Controller of Certifying Authorities (CCA) guidelines, an RA performs identity verification, collects documentation, and initiates the certificate issuance process. … Read more