Voluntary Application Server Identification for Web Push
draft-ietf-webpush-vapid-02

Document Type Active Internet-Draft (webpush WG)
Last updated 2017-05-06 (latest revision 2016-12-21)
Stream IETF
Intended RFC status Proposed Standard
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Network Working Group                                         M. Thomson
Internet-Draft                                                   Mozilla
Intended status: Standards Track                             P. Beverloo
Expires: June 25, 2017                                            Google
                                                       December 22, 2016

        Voluntary Application Server Identification for Web Push
                      draft-ietf-webpush-vapid-02

Abstract

   An application server can voluntarily identify itself to a push
   service using the described technique.  This identification
   information can be used by the push service to attribute requests
   that are made by the same application server to a single entity.
   This can used to reduce the secrecy for push subscription URLs by
   being able to restrict subscriptions to a specific application
   server.  An application server is further able to include additional
   information that the operator of a push service can use to contact
   the operator of the application server.

Status of This Memo

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   This Internet-Draft will expire on June 25, 2017.

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   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
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents

Thomson & Beverloo        Expires June 25, 2017                 [Page 1]
Internet-Draft             Self Identification             December 2016

   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Voluntary Identification  . . . . . . . . . . . . . . . .   3
     1.2.  Notational Conventions  . . . . . . . . . . . . . . . . .   3
   2.  Application Server Self-Identification  . . . . . . . . . . .   4
     2.1.  Application Server Contact Information  . . . . . . . . .   4
     2.2.  Additional Claims . . . . . . . . . . . . . . . . . . . .   4
     2.3.  Example . . . . . . . . . . . . . . . . . . . . . . . . .   5
   3.  Vapid Authentication Scheme . . . . . . . . . . . . . . . . .   6
     3.1.  Token Parameter (t) . . . . . . . . . . . . . . . . . . .   6
     3.2.  Public Key Parameter (k)  . . . . . . . . . . . . . . . .   6
   4.  Subscription Restriction  . . . . . . . . . . . . . . . . . .   7
     4.1.  Creating a Restricted Push Subscription . . . . . . . . .   7
     4.2.  Using Restricted Subscriptions  . . . . . . . . . . . . .   8
   5.  Security Considerations . . . . . . . . . . . . . . . . . . .   8
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   9
     6.1.  Vapid Authentication Scheme Parameters  . . . . . . . . .   9
   7.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  10
   8.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  10
     8.1.  Normative References  . . . . . . . . . . . . . . . . . .  10
     8.2.  Informative References  . . . . . . . . . . . . . . . . .  11
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  12

1.  Introduction

   The Web Push protocol [I-D.ietf-webpush-protocol] describes how an
   application server is able to request that a push service deliver a
   push message to a user agent.

   As a consequence of the expected deployment architecture, there is no
   basis for an application server to be known to a push service prior
   to requesting delivery of a push message.  Requiring that the push
   service be able to authenticate application servers places an
   unwanted constraint on the interactions between user agents and
   application servers, who are the ultimate users of a push service.
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