RFC 5280

Featured PKI

CRL Reason Codes Explained: Certificate Revocation in PKI

CRL reason codes are standardized values in RFC 5280 that explain why a certificate was revoked. Learn how they work in PKI and certificate management environments.

Featured PKI

Authority Key Identifier vs Subject Key Identifier in PKI

Authority Key Identifier vs Subject Key Identifier explained: what AKI and SKI mean in RFC 5280, how they build certificate chains, and why they matter.