RFC 9629 · PROPOSED STANDARD · 2024

Using Key Encapsulation Mechanism Algorithms in the Cryptographic Message Syntax

Overview

RFC 9629, “Using Key Encapsulation Mechanism Algorithms in the Cryptographic Message Syntax”, is a Proposed Standard document published in August 2024 by R. Housley, J. Gray, T. Okubo. It updates RFC 5652. The canonical text is published by the RFC Editor.

Abstract

The Cryptographic Message Syntax (CMS) supports key transport and key agreement algorithms. In recent years, cryptographers have been specifying Key Encapsulation Mechanism (KEM) algorithms, including quantum-secure KEM algorithms. This document defines conventions for the use of KEM algorithms by the originator and recipients to encrypt and decrypt CMS content. This document updates RFC 5652.

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 9629 is hosted at rfc-editor.org. Available in HTML,TXT,PDF,XML.

Relationships to other RFCs
This RFC updates
RFC 5652
Other RFCs from 2024

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