draft-ietf-curdle-rc4-die-die-die-14.txt   draft-ietf-curdle-rc4-die-die-die-15.txt 
Internet Engineering Task Force L. Camara Internet Engineering Task Force L. Camara
Internet-Draft Internet-Draft
Obsoletes: 4345 (if approved) L. Velvindron Obsoletes: 4345 (if approved) L. Velvindron
Intended status: Best Current Practice cyberstorm.mu Intended status: Best Current Practice cyberstorm.mu
Expires: June 28, 2019 December 25, 2018 Expires: July 20, 2019 January 16, 2019
Deprecating RC4 in Secure Shell (SSH) Deprecating RC4 in Secure Shell (SSH)
draft-ietf-curdle-rc4-die-die-die-14 draft-ietf-curdle-rc4-die-die-die-15
Abstract Abstract
This document deprecates RC4 in Secure Shell (SSH). Therefore, this This document deprecates RC4 in Secure Shell (SSH). Therefore, this
document formally obsoletes and moves to Historic RFC4345. document formally obsoletes and moves to Historic RFC4345.
Status of This Memo Status of This Memo
This Internet-Draft is submitted in full conformance with the This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79. provisions of BCP 78 and BCP 79.
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Internet-Drafts are working documents of the Internet Engineering Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet- working documents as Internet-Drafts. The list of current Internet-
Drafts is at https://datatracker.ietf.org/drafts/current/. Drafts is at https://datatracker.ietf.org/drafts/current/.
Internet-Drafts are draft documents valid for a maximum of six months Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress." material or to cite them other than as "work in progress."
This Internet-Draft will expire on June 28, 2019. This Internet-Draft will expire on July 20, 2019.
Copyright Notice Copyright Notice
Copyright (c) 2018 IETF Trust and the persons identified as the Copyright (c) 2019 IETF Trust and the persons identified as the
document authors. All rights reserved. document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents Provisions Relating to IETF Documents
(https://trustee.ietf.org/license-info) in effect on the date of (https://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents publication of this document. Please review these documents
carefully, as they describe your rights and restrictions with respect carefully, as they describe your rights and restrictions with respect
to this document. Code Components extracted from this document must to this document. Code Components extracted from this document must
include Simplified BSD License text as described in Section 4.e of include Simplified BSD License text as described in Section 4.e of
the Trust Legal Provisions and are provided without warranty as the Trust Legal Provisions and are provided without warranty as
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6. References . . . . . . . . . . . . . . . . . . . . . . . . . 4 6. References . . . . . . . . . . . . . . . . . . . . . . . . . 4
6.1. Normative References . . . . . . . . . . . . . . . . . . 4 6.1. Normative References . . . . . . . . . . . . . . . . . . 4
6.2. Informative References . . . . . . . . . . . . . . . . . 4 6.2. Informative References . . . . . . . . . . . . . . . . . 4
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 4 Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 4
1. Introduction 1. Introduction
The usage of RC4 suites ( also designated as arcfour ) for SSH are The usage of RC4 suites ( also designated as arcfour ) for SSH are
specified in [RFC4253] and [RFC4345]. [RFC4253] specifies the specified in [RFC4253] and [RFC4345]. [RFC4253] specifies the
allocation of the "arcfour" cipher for SSH. [RFC4345] specifies and allocation of the "arcfour" cipher for SSH. [RFC4345] specifies and
allocates the the "arcfour-128" and "arcfour-256" ciphers for SSH. allocates the "arcfour-128" and "arcfour-256" ciphers for SSH. RC4
RC4 encryption has known weaknesses [RFC7465] encryption has known weaknesses [RFC7465]
[I-D.ietf-curdle-des-des-des-die-die-die], and the deprecation [I-D.ietf-curdle-des-des-des-die-die-die], and the deprecation
process should be begun for their use in Secure Shell (SSH) process should be begun for their use in Secure Shell (SSH)
[RFC4253]. Accordingly, [RFC4253] is updated to note the deprecation [RFC4253]. Accordingly, [RFC4253] is updated to note the deprecation
of the RC4 ciphers and [RFC4345] is moved to Historic as all ciphers of the RC4 ciphers and [RFC4345] is moved to Historic as all ciphers
it specifies MUST NOT be used. it specifies MUST NOT be used.
1.1. Requirements Language 1.1. Requirements Language
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
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