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WebRTC Security Architecture
draft-ietf-rtcweb-security-arch-10

Document type: Active Internet-Draft (rtcweb WG)
Document stream: IETF
Last updated: 2014-07-04
Intended RFC status: Unknown
Other versions: plain text, xml, pdf, html

IETF State: In WG Last Call Jun 2014
Document shepherd: Sean Turner

IESG State: I-D Exists
Responsible AD: (None)
Send notices to: No addresses provided

RTCWEB                                                       E. Rescorla
Internet-Draft                                                RTFM, Inc.
Intended status:  Standards Track                           July 4, 2014
Expires:  January 5, 2015

                      WebRTC Security Architecture
                   draft-ietf-rtcweb-security-arch-10

Abstract

   The Real-Time Communications on the Web (RTCWEB) working group is
   tasked with standardizing protocols for enabling real-time
   communications within user-agents using web technologies (commonly
   called "WebRTC").  This document defines the security architecture
   for WebRTC.

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
   and may be updated, replaced, or obsoleted by other documents at any
   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 January 5, 2015.

Copyright Notice

   Copyright (c) 2014 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
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   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Rescorla                 Expires January 5, 2015                [Page 1]
Internet-Draft              WebRTC Sec. Arch.                  July 2014

   This document may contain material from IETF Documents or IETF
   Contributions published or made publicly available before November
   10, 2008.  The person(s) controlling the copyright in some of this
   material may not have granted the IETF Trust the right to allow
   modifications of such material outside the IETF Standards Process.
   Without obtaining an adequate license from the person(s) controlling
   the copyright in such materials, this document may not be modified
   outside the IETF Standards Process, and derivative works of it may
   not be created outside the IETF Standards Process, except to format
   it for publication as an RFC or to translate it into languages other
   than English.

Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  4
   2.  Terminology  . . . . . . . . . . . . . . . . . . . . . . . . .  5
   3.  Trust Model  . . . . . . . . . . . . . . . . . . . . . . . . .  5
     3.1.  Authenticated Entities . . . . . . . . . . . . . . . . . .  6
     3.2.  Unauthenticated Entities . . . . . . . . . . . . . . . . .  6
   4.  Overview . . . . . . . . . . . . . . . . . . . . . . . . . . .  6
     4.1.  Initial Signaling  . . . . . . . . . . . . . . . . . . . .  9
     4.2.  Media Consent Verification . . . . . . . . . . . . . . . . 11
     4.3.  DTLS Handshake . . . . . . . . . . . . . . . . . . . . . . 12
     4.4.  Communications and Consent Freshness . . . . . . . . . . . 12
   5.  Detailed Technical Description . . . . . . . . . . . . . . . . 13
     5.1.  Origin and Web Security Issues . . . . . . . . . . . . . . 13
     5.2.  Device Permissions Model . . . . . . . . . . . . . . . . . 13
     5.3.  Communications Consent . . . . . . . . . . . . . . . . . . 15
     5.4.  IP Location Privacy  . . . . . . . . . . . . . . . . . . . 16
     5.5.  Communications Security  . . . . . . . . . . . . . . . . . 17
     5.6.  Web-Based Peer Authentication  . . . . . . . . . . . . . . 18
       5.6.1.  Trust Relationships: IdPs, APs, and RPs  . . . . . . . 19
       5.6.2.  Overview of Operation  . . . . . . . . . . . . . . . . 21
       5.6.3.  Items for Standardization  . . . . . . . . . . . . . . 22
       5.6.4.  Binding Identity Assertions to JSEP Offer/Answer
               Transactions . . . . . . . . . . . . . . . . . . . . . 22
         5.6.4.1.  Input to Assertion Generation Process  . . . . . . 22
         5.6.4.2.  Carrying Identity Assertions . . . . . . . . . . . 23
         5.6.4.3.  a=identity Attribute . . . . . . . . . . . . . . . 24
       5.6.5.  IdP Interaction Details  . . . . . . . . . . . . . . . 24

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