Use of the RSA-KEM Key Transport Algorithm in the Cryptographic Message Syntax
RFC 5990, “Use of the RSA-KEM Key Transport Algorithm in the Cryptographic Message Syntax”, is a Proposed Standard document published in September 2010 by J. Randall, B. Kaliski, J. Brainard, S. Turner. It has been obsoleted by RFC 9690 — refer to the newer document for the authoritative version. The canonical text is published by the RFC Editor.
Abstract
The RSA-KEM Key Transport Algorithm is a one-pass (store-and-forward) mechanism for transporting keying data to a recipient using the recipient's RSA public key. ("KEM" stands for "key encapsulation mechanism".) This document specifies the conventions for using the RSA-KEM Key Transport Algorithm with the Cryptographic Message Syntax (CMS). The ASN.1 syntax is aligned with an expected forthcoming change to American National Standard (ANS) X9.44.
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.
The canonical text of RFC 5990 is hosted at rfc-editor.org. Available in TXT,HTML.
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