Dismiss
InnovationQ will be updated on Sunday, Oct. 22, from 10am ET - noon. You may experience brief service interruptions during that time.
Browse Prior Art Database

Prohibiting RC4 Cipher Suites (RFC7465)

IP.com Disclosure Number: IPCOM000240702D
Original Publication Date: 2015-Feb-01
Included in the Prior Art Database: 2015-Feb-19
Document File: 12 page(s) / 9K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

A. Popov: AUTHOR

Abstract

RC4 is a stream cipher that is described in [SCH]; it is widely supported, and often preferred by TLS servers. However, RC4 has long been known to have a variety of cryptographic weaknesses, e.g., see [PAU], [MAN], and [FLU]. Recent cryptanalysis results [ALF] exploit biases in the RC4 keystream to recover repeatedly encrypted plaintexts.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 31% of the total text.

Internet Engineering Task Force (IETF)                          A. Popov Request for Comments: 7465                               Microsoft Corp. Updates: 5246, 4346, 2246                                  February 2015 Category: Standards Track ISSN: 2070-1721

                      Prohibiting RC4 Cipher Suites

Abstract

   This document requires that Transport Layer Security (TLS) clients    and servers never negotiate the use of RC4 cipher suites when they    establish connections.  This applies to all TLS versions.  This    document updates RFCs 5246, 4346, and 2246.

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/rfc7465.

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.

Popov                        Standards Track                    [Page 1]
 RFC 7465              Prohibiting RC4 Cipher Suites        February 2015

 Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2      1.1.  Requirements Language . . . . . . . . . . . . . . . . . .   2    2.  Changes to TLS  . . . . . . . . . . . . . . . . . . . . . . .   2    3.  Security Considerations . . . . . . . . . . . . . . . . . . .   3    4.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   3      4.1.  Normative References  . . . . . . . . . . . . . . . . . .   3      4.2.  Informative References  . . . . . . . . . . . . . . . . .   3    Appendix A.  RC4 Cipher Suites  . . . . . . . . . . . . . . . . .   5    Acknowledgements  . . . . . . . . . . . . . . . . . . . . . . . .   6    Author's...