Mutual Authentication Protocol for HTTP
draft-ietf-httpauth-mutual-06

The information below is for an old version of the document
Document Type Active Internet-Draft (httpauth WG)
Authors Yutaka Oiwa  , Hajime Watanabe  , Hiromitsu Takagi  , Kaoru Maeda  , Tatsuya Hayashi  , Yuichi Ioku 
Last updated 2016-01-06
Replaces draft-oiwa-httpbis-mutualauth
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HTTPAUTH Working Group                                           Y. Oiwa
Internet-Draft                                               H. Watanabe
Intended status: Experimental                                  H. Takagi
Expires: July 10, 2016                                        ITRI, AIST
                                                                K. Maeda
                                                              T. Hayashi
                                                                 Lepidum
                                                                 Y. Ioku
                                                              Individual
                                                         January 7, 2016

                Mutual Authentication Protocol for HTTP
                     draft-ietf-httpauth-mutual-06

Abstract

   This document specifies a mutual authentication method for the Hyper-
   text Transfer Protocol (HTTP).  This method provides a true mutual
   authentication between an HTTP client and an HTTP server using
   password-based authentication.  Unlike the Basic and Digest
   authentication methods, the Mutual authentication method specified in
   this document assures the user that the server truly knows the user's
   encrypted password.

Status of this Memo

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

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
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   Drafts is at http://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
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   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on July 10, 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

Oiwa, et al.              Expires July 10, 2016                 [Page 1]
Internet-Draft   Mutual Authentication Protocol for HTTP    January 2016

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Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  4
     1.1.  Terminology  . . . . . . . . . . . . . . . . . . . . . . .  4
     1.2.  Document Structure and Related Documents . . . . . . . . .  5
   2.  Protocol Overview  . . . . . . . . . . . . . . . . . . . . . .  5
     2.1.  Messages Overview  . . . . . . . . . . . . . . . . . . . .  6
     2.2.  Typical Flows of the Protocol  . . . . . . . . . . . . . .  6
     2.3.  Alternative Flows  . . . . . . . . . . . . . . . . . . . .  9
   3.  Message Syntax . . . . . . . . . . . . . . . . . . . . . . . . 10
     3.1.  Non-ASCII extended header parameters . . . . . . . . . . . 11
     3.2.  Values . . . . . . . . . . . . . . . . . . . . . . . . . . 12
       3.2.1.  Tokens . . . . . . . . . . . . . . . . . . . . . . . . 12
       3.2.2.  Strings  . . . . . . . . . . . . . . . . . . . . . . . 13
       3.2.3.  Numbers  . . . . . . . . . . . . . . . . . . . . . . . 13
   4.  Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
     4.1.  401-INIT and 401-STALE . . . . . . . . . . . . . . . . . . 15
     4.2.  req-KEX-C1 . . . . . . . . . . . . . . . . . . . . . . . . 17
     4.3.  401-KEX-S1 . . . . . . . . . . . . . . . . . . . . . . . . 18
     4.4.  req-VFY-C  . . . . . . . . . . . . . . . . . . . . . . . . 19
     4.5.  200-VFY-S  . . . . . . . . . . . . . . . . . . . . . . . . 20
   5.  Authentication Realms  . . . . . . . . . . . . . . . . . . . . 20
     5.1.  Resolving Ambiguities  . . . . . . . . . . . . . . . . . . 22
   6.  Session Management . . . . . . . . . . . . . . . . . . . . . . 22
   7.  Host Validation Methods  . . . . . . . . . . . . . . . . . . . 24
     7.1.  Applicability notes  . . . . . . . . . . . . . . . . . . . 26
     7.2.  Notes on tls-unique  . . . . . . . . . . . . . . . . . . . 26
   8.  Authentication Extensions  . . . . . . . . . . . . . . . . . . 27
   9.  String Preparation . . . . . . . . . . . . . . . . . . . . . . 27
   10. Decision Procedure for Clients . . . . . . . . . . . . . . . . 28
     10.1. General Principles and Requirements  . . . . . . . . . . . 28
     10.2. State machine for the client-side (informative)  . . . . . 30
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