WebRTC Security Architecture
draft-ietf-rtcweb-security-arch-11

 
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Type Active Internet-Draft (rtcweb WG)
Last updated 2015-03-19 (latest revision 2015-03-07)
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WG state Waiting for WG Chair Go-Ahead Jun 2014
Revised I-D Needed - Issue raised by WGLC, Doc Shepherd Follow-up Underway
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Shepherd write-up Show (last changed 2015-03-19)
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Responsible AD Alissa Cooper
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RTCWEB                                                       E. Rescorla
Internet-Draft                                                RTFM, Inc.
Intended status: Standards Track                           March 7, 2015
Expires: September 8, 2015

                      WebRTC Security Architecture
                   draft-ietf-rtcweb-security-arch-11

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.

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   This Internet-Draft will expire on September 8, 2015.

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

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Rescorla                Expires September 8, 2015               [Page 1]
Internet-Draft              WebRTC Sec. Arch.                 March 2015

   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
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   it for publication as an RFC or to translate it into languages other
   than English.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   5
   3.  Trust Model . . . . . . . . . . . . . . . . . . . . . . . . .   5
     3.1.  Authenticated Entities  . . . . . . . . . . . . . . . . .   5
     3.2.  Unauthenticated Entities  . . . . . . . . . . . . . . . .   6
   4.  Overview  . . . . . . . . . . . . . . . . . . . . . . . . . .   6
     4.1.  Initial Signaling . . . . . . . . . . . . . . . . . . . .   8
     4.2.  Media Consent Verification  . . . . . . . . . . . . . . .  10
     4.3.  DTLS Handshake  . . . . . . . . . . . . . . . . . . . . .  11
     4.4.  Communications and Consent Freshness  . . . . . . . . . .  11
   5.  Detailed Technical Description  . . . . . . . . . . . . . . .  12
     5.1.  Origin and Web Security Issues  . . . . . . . . . . . . .  12
     5.2.  Device Permissions Model  . . . . . . . . . . . . . . . .  12
     5.3.  Communications Consent  . . . . . . . . . . . . . . . . .  15
     5.4.  IP Location Privacy . . . . . . . . . . . . . . . . . . .  15
     5.5.  Communications Security . . . . . . . . . . . . . . . . .  16
     5.6.  Web-Based Peer Authentication . . . . . . . . . . . . . .  18
       5.6.1.  Trust Relationships: IdPs, APs, and RPs . . . . . . .  19
       5.6.2.  Overview of Operation . . . . . . . . . . . . . . . .  20
       5.6.3.  Items for Standardization . . . . . . . . . . . . . .  22
       5.6.4.  Binding Identity Assertions to JSEP Offer/Answer
               Transactions  . . . . . . . . . . . . . . . . . . . .  22
         5.6.4.1.  Carrying Identity Assertions  . . . . . . . . . .  23
         5.6.4.2.  a=identity Attribute  . . . . . . . . . . . . . .  23
       5.6.5.  Determining the IdP URI . . . . . . . . . . . . . . .  24
         5.6.5.1.  Authenticating Party  . . . . . . . . . . . . . .  25
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