HTTP Authentication-Info and Proxy-Authentication-Info Response Header Fields
RFC 7615

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Internet Engineering Task Force (IETF)                        J. Reschke
Request for Comments: 7615                                    greenbytes
Obsoletes: 2617                                           September 2015
Category: Standards Track
ISSN: 2070-1721

         HTTP Authentication-Info and Proxy-Authentication-Info
                         Response Header Fields

Abstract

   This specification defines the "Authentication-Info" and "Proxy-
   Authentication-Info" response header fields for use in Hypertext
   Transfer Protocol (HTTP) authentication schemes that need to return
   information once the client's authentication credentials have been
   accepted.

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/rfc7615.

Reschke                      Standards Track                    [Page 1]
RFC 7615                HTTP Authentication-Info          September 2015

Copyright Notice

   Copyright (c) 2015 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

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   than English.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Notational Conventions  . . . . . . . . . . . . . . . . . . .   3
   3.  The Authentication-Info Response Header Field . . . . . . . .   3
     3.1.  Parameter Value Format  . . . . . . . . . . . . . . . . .   4
   4.  The Proxy-Authentication-Info Response Header Field . . . . .   4
   5.  Security Considerations . . . . . . . . . . . . . . . . . . .   4
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   5
   7.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   5
     7.1.  Normative References  . . . . . . . . . . . . . . . . . .   5
     7.2.  Informative References  . . . . . . . . . . . . . . . . .   5
   Acknowledgements  . . . . . . . . . . . . . . . . . . . . . . . .   6
   Author's Address  . . . . . . . . . . . . . . . . . . . . . . . .   6

Reschke                      Standards Track                    [Page 2]
RFC 7615                HTTP Authentication-Info          September 2015

1.  Introduction

   This specification defines the "Authentication-Info" and "Proxy-
   Authentication-Info" response header fields for use in HTTP
   authentication schemes ([RFC7235]) that need to return information
   once the client's authentication credentials have been accepted.

   Both were previously defined in Section 3 of [RFC2617], defining the
   HTTP "Digest" authentication scheme.  This document generalizes the
   description for use not only in "Digest" ([RFC7616]), but also in
   other future schemes that might have the same requirements for
   carrying additional information during authentication.

2.  Notational Conventions

   This specification uses the Augmented Backus-Naur Form (ABNF)
   notation of [RFC5234] with a list extension, defined in Section 7 of
   [RFC7230], that allows for compact definition of comma-separated
   lists using a '#' operator (similar to how the '*' operator indicates
   repetition).  The ABNF production for "auth-param" is defined in
   Section 2.1 of [RFC7235].

3.  The Authentication-Info Response Header Field

   HTTP authentication schemes can use the Authentication-Info response