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RFC 9690: Use of the RSA-KEM Algorithm in the Cryptographic Message Syntax (CMS)

In plain English — editorial summary, not part of the RFC

The RSA Key Encapsulation Mechanism (RSA-KEM) algorithm is a one-pass (store-and-forward) cryptographic mechanism for an originator to securely send keying material to a recipient using the recipient's RSA public key. The RSA-KEM algorithm is specified in Clause 11.5 of ISO/IEC: 18033-2:2006. This document specifies the conventions for using the RSA-KEM algorithm as a standalone KEM algorithm and the conventions for using the RSA-KEM algorithm with the Cryptographic Message Syntax (CMS) using KEMRecipientInfo as specified in RFC 9629. This document obsoletes RFC 5990.

Document record

Document ID
RFC9690
Published
February 2025
Authors
R. Housley; S. Turner
Status
PROPOSED STANDARD
Stream
IETF
Area
sec
Pages
30
Also known as
—
Obsoletes:
RFC 5990

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The document record above — title, authors, date, status, stream, area, relationships, DOI and errata — is imported verbatim from the public RFC Editor index. The “in plain English” section is editorial: written by The metasystema editorial team, not part of the RFC. Where the two differ, the RFC text governs.

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