RFC 3185 · PROPOSED STANDARD · 2001
SUN · 14 JUN 2026
Reuse of CMS Content Encryption Keys
Overview
RFC 3185, “Reuse of CMS Content Encryption Keys”, is a Proposed Standard document published in October 2001 by S. Farrell, S. Turner. The canonical text is published by the RFC Editor.
Abstract
This document describes a way to include a key identifier in a CMS (Cryptographic Message Syntax) enveloped data structure, so that the content encryption key can be re-used for further enveloped data packets. [STANDARDS-TRACK]
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 3185 is hosted at rfc-editor.org. Available in TXT,HTML.
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