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Transport Layer Security (TLS) Cached Information Extension (RFC7924) Disclosure Number: IPCOM000246975D
Original Publication Date: 2016-Jul-01
Included in the Prior Art Database: 2016-Jul-20
Document File: 38 page(s) / 35K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

S. Santesson: AUTHOR [+2]


Reducing the amount of information exchanged during a Transport Layer Security handshake to a minimum helps to improve performance in environments where devices are connected to a network with a low bandwidth and lossy radio technology. With the Internet of Things, such environments exist, for example, when devices use IEEE 802.15.4, Bluetooth Low Energy, or low power wide area networks. For more information about the challenges with smart object deployments, please see [RFC6574].

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Internet Engineering Task Force (IETF)                      S. Santesson Request for Comments: 7924                               3xA Security AB Category: Standards Track                                  H. Tschofenig ISSN: 2070-1721                                                 ARM Ltd.                                                                July 2016

       Transport Layer Security (TLS) Cached Information Extension


   Transport Layer Security (TLS) handshakes often include fairly static    information, such as the server certificate and a list of trusted    certification authorities (CAs).  This information can be of    considerable size, particularly if the server certificate is bundled    with a complete certificate chain (i.e., the certificates of    intermediate CAs up to the root CA).

   This document defines an extension that allows a TLS client to inform    a server of cached information, thereby enabling the server to omit    already available information.

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 7841.

   Information about the current status of this document, any errata,    and how to provide feedback on it may be obtained at

 Santesson & Tschofenig       Standards Track                    [Page 1]
 RFC 7924            TLS Cached Information Extension           July 2016

 Copyright Notice

   Copyright (c) 2016 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    ( 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.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3

   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3

   3.  Cached Information Extension  . . . . . . . . . . ....