X.509 certificate
A digitally signed data structure that binds a public key to a named identity (subject) and is issued by a Certificate Authority. Contains the subject's name and public key, validity period, issuing CA's name and signature, and extension fields for usage constraints and revocation endpoints.
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Related terms
Aadhaar e-SignESIGN Act (Electronic Signatures in Global and National Commerce Act)EU Trusted List (EUTL)Long-Term Validation (LTV)OCSP (Online Certificate Status Protocol)Public Key Infrastructure (PKI)QSCD (Qualified Signature Creation Device)Qualified Electronic Signature (QES)TSA timestamp (Timestamp Authority)