X.509 Certificate
Standard certificate format used in most PKI signature ecosystems.
Definition
Standard certificate format used in most PKI signature ecosystems.
Why it matters
Defines identity and trust metadata for certificate-based validation.
Related PDFHQ workflows
Used in PDF digital signature verification and trust chain checks.
Related Knowledge
Digital Signature
Cryptographic signature proving integrity and signer authenticity.
Public Key Infrastructure (PKI)
Framework for issuing, managing, and validating digital certificates.
OCSP
Online Certificate Status Protocol for real-time certificate revocation checks.
Certificate Chain
Ordered trust path from signer certificate to trusted root authority.