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X.509v3 Transport Layer Security (TLS) Feature Extension (RFC7633)

IP.com Disclosure Number: IPCOM000244964D
Original Publication Date: 2015-Oct-01
Included in the Prior Art Database: 2016-Feb-04
Document File: 22 page(s) / 22K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

P. Hallam-Baker: AUTHOR

Abstract

The Transport Layer Security (TLS) feature extension provides a means of preventing downgrade attacks that are not otherwise prevented by the TLS protocol.

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This is the abbreviated version, containing approximately 13% of the total text.

Internet Engineering Task Force (IETF)                   P. Hallam-Baker Request for Comments: 7633                             Comodo Group Inc. Category: Standards Track                                   October 2015 ISSN: 2070-1721

         X.509v3 Transport Layer Security (TLS) Feature Extension

Abstract

   The purpose of the TLS feature extension is to prevent downgrade    attacks that are not otherwise prevented by the TLS protocol.  In    particular, the TLS feature extension may be used to mandate support    for revocation checking features in the TLS protocol such as Online    Certificate Status Protocol (OCSP) stapling.  Informing clients that    an OCSP status response will always be stapled permits an immediate    failure in the case that the response is not stapled.  This in turn    prevents a denial-of-service attack that might otherwise be possible.

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    http://www.rfc-editor.org/info/rfc7633.

Copyright Notice

   Copyright (c) 2015 IETF Trust and the persons identified as the    document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal    Provisions Relating to IETF Documents    (http://trustee.ietf.org/license-info) in effect on the date of    publication of this document.  Please review these documents    carefully, as they describe your rights and restrictions with respect    to this document.  Code Components extracted from this document must    include Simplified BSD License text as described in Section 4.e of    the Trust Legal Provisions and are provided without warranty as    described in the Simplified BSD License.

 Hallam-Baker                 Standards Track                    [Page 1]
 RFC 7633                  TLS Feature Extension             October 2015

 Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2

   2.  Definitions . . . . . . . . . . . . . . . . . . . . . . . . .   2

     2.1.  Requirements Language . . . . . . . . . . . . . . . . . .   2

     2.2.  TLS Feature, X.509 Extension  . . . . . . . . . . . . . .   3

   3.  Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . .   3

   4.  Syntax  . . . . . . . . . . . ....