Internet Engineering Task Force (IETF) S. Turner
Request for Comments: 5756 IECA
Updates: 4055 D. Brown
Category: Standards Track Certicom
ISSN: 2070-1721 K. Yiu
Updates for RSAES-OAEP and RSASSA-PSS Algorithm Parameters
This document updates RFC 4055. It updates the conventions for using
the RSA Encryption Scheme - Optimal Asymmetric Encryption Padding
(RSAES-OAEP) key transport algorithm in the Internet X.509 Public Key
Infrastructure (PKI). Specifically, it updates the conventions for
algorithm parameters in an X.509 certificate's subjectPublicKeyInfo
Status of This Memo
This is an Internet Standards Track document.
This document is a product of the Internet Engineering Task Force
(IETF). It represents the consensus of the IETF community. It has
received public review and has been approved for publication by the
Internet Engineering Steering Group (IESG). Further information on
Internet Standards is available in Section 2 of RFC 5741.
Information about the current status of this document, any errata,
and how to provide feedback on it may be obtained at
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Turner, et al. Standards Track [Page 1]RFC 5756 RFC 4055 Update January 2010
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RFC 4055 specifies conventions for using the RSA Encryption Scheme -
Optimal Asymmetric Encryption Padding (RSAES-OAEP) key transport
algorithm in the Internet X.509 Public Key Infrastructure (PKI). It
provides algorithm identifiers and parameters for RSAES-OAEP.
This document updates the conventions for RSAES-OAEP parameters in
the subjectPublicKeyInfo field of an X.509 certificate. The PKIX WG
Elliptic Curve Cryptography (ECC) design team recommended that Key
Derivation Functions (KDFs) should not be constrained within a
certificate; rather, KDF constraints should be negotiated in
protocols that need to employ certificates.
Only two paragraphs in [RFC4055] discuss RSAES-OAEP parameters in
X.509 certificates: the second paragraph of Section 4 and the first
paragraph of Section 4.1. This document only updates these two
paragraphs. Section 3 updates the second paragraph in Section 4 of
[RFC4055], while Section 4 updates the second paragraph in Section
4.1 of [RFC4055]. "Old:" prefaces the text to be replaced and "New:"
prefaces the replacement text.
This document also replaces incorrect references to the
publicKeyAlgorithms field in Section 3 with references to the
parameters field in the subjectPublicKeyInfo algorithm field.
Section 3 also rewords the second and third paragraphs for clarity.
Turner, et al. Standards Track [Page 2]