Commercial National Security Algorithm (CNSA) Suite Cryptography for Secure Shell (SSH)
draft-gajcowski-cnsa-ssh-profile-00

Document Type Active Internet-Draft (individual)
Authors Nicholas Gajcowski  , Michael Jenkins 
Last updated 2020-08-17 (latest revision 2020-08-14)
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Network Working Group                                       N. Gajcowski
Internet-Draft                                                M. Jenkins
Intended status: Informational                                       NSA
Expires: February 15, 2021                               August 14, 2020

  Commercial National Security Algorithm (CNSA) Suite Cryptography for
                           Secure Shell (SSH)
                  draft-gajcowski-cnsa-ssh-profile-00

Abstract

   The United States Government has published the NSA Commercial
   National Security Algorithm (CNSA) Suite, which defines cryptographic
   algorithm policy for national security applications.  This document
   specifies the conventions for using the United States National
   Security Agency's CNSA Suite algorithms with the Secure Shell
   Transport Layer Protocol and the Secure Shell Authentication
   Protocol.  It applies to the capabilities, configuration, and
   operation of all components of US National Security Systems that
   employ IPSec.  US National Security Systems are described in NIST
   Special Publication 800-59.  It is also appropriate for all other US
   Government systems that process high-value information.  It is made
   publicly available for use by developers and operators of these and
   any other system deployments.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

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   This Internet-Draft will expire on February 15, 2021.

Copyright Notice

   Copyright (c) 2020 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

Gajcowski & Jenkins     Expires February 15, 2021               [Page 1]
Internet-Draft           CNSA Suite SSH Profile              August 2020

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (https://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  The Commercial National Security Algorithm Suite  . . . . . .   3
   4.  CNSA and Secure Shell . . . . . . . . . . . . . . . . . . . .   3
     4.1.  Hash Functions  . . . . . . . . . . . . . . . . . . . . .   4
     4.2.  Digital Signatures  . . . . . . . . . . . . . . . . . . .   4
   5.  Security Mechanism Negotiation and Initialization . . . . . .   5
   6.  Key Exchange and Server Authentication  . . . . . . . . . . .   5
     6.1.  ECDH Key Exchange . . . . . . . . . . . . . . . . . . . .   6
     6.2.  DH Key Exchange . . . . . . . . . . . . . . . . . . . . .   6
   7.  User Authentication . . . . . . . . . . . . . . . . . . . . .   6
   8.  Confidentiality and Data Integrity of SSH Binary Packets  . .   7
     8.1.  Galois/Counter Mode . . . . . . . . . . . . . . . . . . .   7
     8.2.  Data Integrity  . . . . . . . . . . . . . . . . . . . . .   8
   9.  Rekeying  . . . . . . . . . . . . . . . . . . . . . . . . . .   8
   10. Security Considerations . . . . . . . . . . . . . . . . . . .   8
   11. IANA Considerations . . . . . . . . . . . . . . . . . . . . .   8
   12. References  . . . . . . . . . . . . . . . . . . . . . . . . .   8
     12.1.  Normative References . . . . . . . . . . . . . . . . . .   8
     12.2.  Informative References . . . . . . . . . . . . . . . . .   9
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  10

1.  Introduction

   This document specifies conventions for using the United States
   National Security Agency's CNSA Suite algorithms [CNSA] with Secure
   Shell Transport Layer Protocol [RFC4253] and the Secure Shell
   Authentication Protocol [RFC4252].  It applies to the capabilities,
   configuration, and operation of all components of US National
   Security Systems that employ IPSec.  US National Security Systems are
   described in NIST Special Publication 800-59 [SP80059].  It is also
   appropriate for all other US Government systems that process high-
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