PKIX
https://datatracker.ietf.org/wg/pkix/documents/
PKIのわーきんぐぐるーぷ的なところ
RFC 8360 Resource Public Key Infrastructure (RPKI) Validation Reconsidered
RFC 7299 Object Identifier Registry for the PKIX Working Group
RFC 6487 A Profile for X.509 PKIX Resource Certificates
RFC 5912 New ASN.1 Modules for the Public Key Infrastructure Using X.509 (PKIX)
RFC 4212 Alternative Certificate Formats for the Public-Key Infrastructure Using X.509 (PKIX) Certificate Management Protocols