A Simple Anonymous GSS-API Mechanism
draft-ietf-kitten-gss-sanon-01

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Network Working Group                                          L. Howard
Internet-Draft                                                      PADL
Intended status: Standards Track                            July 5, 2020
Expires: January 6, 2021

                  A Simple Anonymous GSS-API Mechanism
                     draft-ietf-kitten-gss-sanon-01

Abstract

   This document defines protocols, procedures and conventions for a
   Generic Security Service Application Program Interface (GSS-API)
   security mechanism that provides key agreement without authentication
   of either party.

Status of This Memo

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   This Internet-Draft will expire on January 6, 2021.

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Requirements notation . . . . . . . . . . . . . . . . . . . .   2
   3.  Discovery and Negotiation . . . . . . . . . . . . . . . . . .   3
   4.  Naming  . . . . . . . . . . . . . . . . . . . . . . . . . . .   3
   4.1.  Mechanism Names . . . . . . . . . . . . . . . . . . . . . .   3
   4.2.  Display Name Format . . . . . . . . . . . . . . . . . . . .   3
   4.3.  Exported Name Format  . . . . . . . . . . . . . . . . . . .   3
   5.  Definitions and Token Formats . . . . . . . . . . . . . . . .   4
   5.1.  Context Establishment Tokens  . . . . . . . . . . . . . . .   4
   5.1.1.  Initial context token . . . . . . . . . . . . . . . . . .   4
   5.1.2.  Acceptor context token  . . . . . . . . . . . . . . . . .   5
   5.1.3.  Initiator context completion  . . . . . . . . . . . . . .   5
   5.2.  Per-Message Tokens  . . . . . . . . . . . . . . . . . . . .   6
   5.3.  Context Deletion Tokens . . . . . . . . . . . . . . . . . .   6
   6.  Key derivation  . . . . . . . . . . . . . . . . . . . . . . .   6
   7.  Pseudo-Random Function  . . . . . . . . . . . . . . . . . . .   7
   8.  Security Considerations . . . . . . . . . . . . . . . . . . .   7
   9.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   7
   10. References  . . . . . . . . . . . . . . . . . . . . . . . . .   7
   10.1.  Normative References . . . . . . . . . . . . . . . . . . .   8
   10.2.  Informative References . . . . . . . . . . . . . . . . . .   8
   Appendix A.  Test Vectors . . . . . . . . . . . . . . . . . . . .   9
   Appendix B.  Mechanism Attributes . . . . . . . . . . . . . . . .  10
   Appendix C.  NegoEx . . . . . . . . . . . . . . . . . . . . . . .  10
   Appendix D.  IANA Considerations  . . . . . . . . . . . . . . . .  11
   Author's Address  . . . . . . . . . . . . . . . . . . . . . . . .  11

1.  Introduction

   The Generic Security Service Application Program Interface (GSS-API)
   [RFC2743] provides a framework for authentication and message
   protection services through a common programming interface.

   The Simple Anonymous mechanism (hereafter SAnon) described in this
   document is a simple protocol based on the X25519 elliptic curve
   Diffie-Hellman (ECDH) key agreement scheme defined in [RFC7748].  No
   authentication of initiator or acceptor is provided.  A potential use
   of SAnon is to provide a degree of privacy when bootstrapping unkeyed
   entities.

2.  Requirements notation

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in [RFC2119].

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