Use of the Elliptic Curve Diffie-Hellamn Key Agreement Algorithm with X25519 and X448 in the Cryptographic Message Syntax (CMS)

The information below is for an old version of the document
Document Type Expired Internet-Draft (curdle WG)
Last updated 2017-03-12 (latest revision 2016-09-08)
Replaces draft-housley-cms-ecdh-new-curves
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Expired & archived
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document describes the conventions for using Elliptic Curve Diffie-Hellamn (ECDH) key agreement algorithm using curve25519 and curve448 in the Cryptographic Message Syntax (CMS).


Russ Housley (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)