Search RFCs Advanced Search RFC Editor STD 70 RFC 5652 Cryptographic Message Syntax (CMS), September 2009 File formats: Status:INTERNET STANDARD (changed from DRAFT STANDARD) Obsoletes:RFC 3852 Updated by:RFC 8933, RFC 9629 Author:R. Housley Stream:IETF Source:smime (sec) Cite this RFC: TXT | XML | BibTeX DOI: https://doi.org/10.17487/RFC5652 Discuss this RFC: Send questions or comments to the mailing list smime@ietf.org Other actions: View Errata | Submit Errata | Find IPR Disclosures from the IETF | View History of RFC 5652 Abstract This document describes the Cryptographic Message Syntax (CMS). This syntax is used to digitally sign, digest, authenticate, or encrypt arbitrary message content. [STANDARDS-TRACK] For the definition of Status, see RFC 2026. For the definition of Stream, see RFC 8729. Document RetrievalErrataFrequently Asked QuestionsFuture Format FAQHistoryAbout UsOther InformationPublication ProcessPublication QueueStyle Guide Advanced Search