RFC 8550 · PROPOSED STANDARD · 2019

Secure/Multipurpose Internet Mail Extensions Version 4.0 Certificate Handling

Overview

RFC 8550, “Secure/Multipurpose Internet Mail Extensions Version 4.0 Certificate Handling”, is a Proposed Standard document published in April 2019 by J. Schaad, B. Ramsdell, S. Turner. It obsoletes RFC 5750. The canonical text is published by the RFC Editor.

Abstract

This document specifies conventions for X.509 certificate usage by Secure/Multipurpose Internet Mail Extensions (S/MIME) v4.0 agents. S/MIME provides a method to send and receive secure MIME messages, and certificates are an integral part of S/MIME agent processing. S/MIME agents validate certificates as described in RFC 5280 ("Internet X.509 Public Key Infrastructure Certificate and Certificate Revocation List (CRL) Profile"). S/MIME agents must meet the certificate-processing requirements in this document as well as those in RFC 5280. This document obsoletes RFC 5750.

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 8550 is hosted at rfc-editor.org. Available in TXT,HTML.

Relationships to other RFCs
This RFC obsoletes
RFC 5750
Other RFCs from 2019

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