Browse Prior Art Database

A Transport Layer Security (TLS) ClientHello Padding Extension (RFC7685)

IP.com Disclosure Number: IPCOM000245036D
Original Publication Date: 2015-Oct-01
Included in the Prior Art Database: 2016-Feb-06
Document File: 8 page(s) / 7K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

A. Langley: AUTHOR

Abstract

Successive TLS [RFC5246] versions have added support for more cipher suites and, over time, more TLS extensions have been defined. This has caused the size of the TLS ClientHello to grow, and the additional size has caused some implementation bugs to come to light. At least one of these implementation bugs can be ameliorated by making the ClientHello even larger. This is desirable given that fully comprehensive patching of affected implementations is difficult to achieve.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 39% of the total text.

Internet Engineering Task Force (IETF)                        A. Langley Request for Comments: 7685                                    Google Inc Updates: 5246                                               October 2015 Category: Standards Track ISSN: 2070-1721

      A Transport Layer Security (TLS) ClientHello Padding Extension

Abstract

   This memo describes a Transport Layer Security (TLS) extension that    can be used to pad ClientHello messages to a desired size.

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/rfc7685.

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.

Langley                      Standards Track                    [Page 1]
 RFC 7685            TLS ClientHello Padding Extension       October 2015

 Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2    2.  Requirements Notation . . . . . . . . . . . . . . . . . . . .   2    3.  Padding Extension . . . . . . . . . . . . . . . . . . . . . .   2    4.  Example Usage . . . . . . . . . . . . . . . . . . . . . . . .   3    5.  Security Considerations . . . . . . . . . . . . . . . . . . .   3    6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   4    7.  Normative References  . . . . . . . . . . . . . . . . . . . .   4    Acknowledgements  . . . . . . . . . . . . . . . . . . . . . . . .   4    Author's Address  . . . . . . . . . . . . . . . . . . . . . . . .   4

1.  Introduction

   Successive TLS [RFC5246] versions have added support for more cipher    suites and, over time, more TLS extensions...