ACME Identifiers and Challenges for VoIP Service Providers
draft-ietf-acme-service-provider-02

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Last updated 2017-10-30
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Network Working Group                                          M. Barnes
Internet-Draft                                                 iconectiv
Intended status: Informational                                  C. Wendt
Expires: May 3, 2018                                             Comcast
                                                        October 30, 2017

       ACME Identifiers and Challenges for VoIP Service Providers
                  draft-ietf-acme-service-provider-02

Abstract

   This document specifies identifiers and challenges required to enable
   the Automated Certificate Management Environment (ACME) to issue
   certificates for VoIP service providers to support Secure Telephony
   Identity (STI).

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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   and may be updated, replaced, or obsoleted by other documents at any
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   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on May 3, 2018.

Copyright Notice

   Copyright (c) 2017 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
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   (https://trustee.ietf.org/license-info) in effect on the date of
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   described in the Simplified BSD License.

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Overview  . . . . . . . . . . . . . . . . . . . . . . . . . .   2
   3.  Identifier for Service Provider Codes . . . . . . . . . . . .   3
   4.  Challenges for Service Providers  . . . . . . . . . . . . . .   3
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   6
     5.1.  ACME TNAuthList Identifier  . . . . . . . . . . . . . . .   6
     5.2.  ACME Service Provider Challenge . . . . . . . . . . . . .   7
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .   7
   7.  Informative References  . . . . . . . . . . . . . . . . . . .   7
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   9

1.  Introduction

   [I-D.ietf-acme-acme] is a mechanism for automating certificate
   management on the Internet.  It enables administrative entities to
   prove effective control over resources like domain names, and
   automates the process of generating and issuing certificates.

   The STIR problem statement [RFC7340] identifies the need for Internet
   credentials that can attest authority for the originator of VoIP
   calls in order to detect impersonation, which is currently an enabler
   for common attacks associated with illegal robocalling, voicemail
   hacking, and swatting.  These credentials are used to sign PASSporTs
   [I-D.ietf-stir-passport], which can be carried in using protocols
   such as SIP [I-D.ietf-stir-rfc4474bis].  Currently, the only defined
   credentials for this purpose are the certificates specified in
   [I-D.ietf-stir-certificates].

   [I-D.ietf-stir-certificates] describes certificate extensions
   suitable for associating telephone numbers and service provider codes
   with certificates.  [I-D.ietf-acme-telephone] specifies the ACME
   extensions to enable certification authorities to issue certificates
   based on telephone numbers.  This specification defines extensions to
   ACME to enable certification authorities to issue certificates based
   on service provider codes.

2.  Overview

   The document [ATIS-1000080] provides a framework and model for using
   certificates based on service provider codes.  In this model, each
   service provider requires only a few certificates, which are used in
   conjunction with a PASSporT that contains additional information
   attesting to a service provider's knowledge of the originator of the
   call.  Further details on the PASSporT extensions for this model are
   provided in the SHAKEN Framework [ATIS-1000074].

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