RFC 5280 · PROPOSED STANDARD · 2008

Internet X.509 Public Key Infrastructure Certificate and Certificate Revocation List Profile

Overview

RFC 5280, “Internet X.509 Public Key Infrastructure Certificate and Certificate Revocation List Profile”, is a Proposed Standard document published in May 2008 by D. Cooper, S. Santesson, S. Farrell, S. Boeyen, R. Housley, W. Polk. It obsoletes RFC 3280, RFC 4325, RFC 4630. It has since been updated by RFC 6818, RFC 8398, RFC 8399, RFC 9549, RFC 9598, RFC 9608, RFC 9618, RFC 9925. The canonical text is published by the RFC Editor.

Abstract

This memo profiles the X.509 v3 certificate and X.509 v2 certificate revocation list (CRL) for use in the Internet. An overview of this approach and model is provided as an introduction. The X.509 v3 certificate format is described in detail, with additional information regarding the format and semantics of Internet name forms. Standard certificate extensions are described and two Internet-specific extensions are defined. A set of required certificate extensions is specified. The X.509 v2 CRL format is described in detail along with standard and Internet-specific extensions. An algorithm for X.509 certification path validation is described. An ASN.1 module and examples are provided in the appendices. [STANDARDS-TRACK]

Abstract as published in the RFC, via rfc-editor.org.

What “Proposed Standard” means

An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.

Read this RFC

The canonical text of RFC 5280 is hosted at rfc-editor.org. Available in TXT,HTML.

Relationships to other RFCs
This RFC obsoletes
RFC 3280 RFC 4325 RFC 4630
Other RFCs from 2008

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