Search RFCs

RFC Editor

File formats:

Also available:XML file for editing

 

Status:

PROPOSED STANDARD

Author:

R. Housley

Stream:

IETF

Source:

lamps (sec)

Cite this RFC:TXT  | XML  |  BibTeX

DOI:  https://doi.org/10.17487/RFC9709

Discuss this RFC: Send questions or comments to the mailing listspasm@ietf.org

Other actions:Submit Errata  | Find IPR Disclosures from the IETF  | View History of RFC 9709

Abstract

This document specifies the derivation of the content-encryption keyor the content-authenticated-encryption key in the CryptographicMessage Syntax (CMS) using the HMAC-based Extract-and-Expand KeyDerivation Function (HKDF) with SHA-256. The use of this mechanismprovides protection against an attacker that manipulates thecontent-encryption algorithm identifier or thecontent-authenticated-encryption algorithm identifier.

For the definition ofStatus,seeRFC 2026.

For the definition ofStream, seeRFC 8729.