RFC 8933 · PROPOSED STANDARD · 2020
SUN · 14 JUN 2026
Update to the Cryptographic Message Syntax for Algorithm Identifier Protection
Overview
RFC 8933, “Update to the Cryptographic Message Syntax for Algorithm Identifier Protection”, is a Proposed Standard document published in October 2020 by R. Housley. It updates RFC 5652. The canonical text is published by the RFC Editor.
Abstract
This document updates the Cryptographic Message Syntax (CMS) specified in RFC 5652 to ensure that algorithm identifiers in signed-data and authenticated-data content types are adequately protected.
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 8933 is hosted at rfc-editor.org. Available in HTML,TXT,PDF,XML.
Relationships to other RFCs
Other RFCs from 2020
- RFC 8932 Recommendations for DNS Privacy Service Operators
- RFC 8934 PCE Communication Protocol Extensions for Label Switched Path Scheduling with Stateful PCE
- RFC 8931 IPv6 over Low-Power Wireless Personal Area Network Selective Fragment Recovery
- RFC 8935 Push-Based Security Event Token Delivery Using HTTP
- RFC 8930 On Forwarding 6LoWPAN Fragments over a Multi-Hop IPv6 Network
- RFC 8936 Poll-Based Security Event Token Delivery Using HTTP
- RFC 8929 IPv6 Backbone Router
- RFC 8937 Randomness Improvements for Security Protocols