Enum validation architecture token format draft mayrhofer enum validation 00 txt
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ENUM Validation Architecture & Token Format draft-mayrhofer-enum-validation-00.txt. Axel Mayrhofer, Otmar Lendl enum.at GmbH Michael Haberler Internet Foundation Austria. overview. sources of validation information goals + setup options architecture token format contents.

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Enum validation architecture token format draft mayrhofer enum validation 00 txt

ENUM Validation Architecture &Token Formatdraft-mayrhofer-enum-validation-00.txt

Axel Mayrhofer, Otmar Lendl

enum.at GmbH

Michael Haberler

Internet Foundation Austria


Overview
overview

  • sources of validation information

  • goals + setup options

  • architecture

  • token format contents



Goals
goals

  • prove the registrant‘s right-to-use in the number

  • efficient process in common cases

    • be easy on incumbents or they‘ll never bite

  • allow for consumer choice

    • enable ENUM service provision even if NRH is not cooperating

  • avoid the next monopoly

  • allow for many sources of validation information

    • may the best method win

  • dont tilt new versus existing number use


Setup options
setup options

  • centralized validation agent

    • this is the next monopoly

    • inefficient on service providers – they know their customers already

  • multiple validation agents

    • no monopoly, but still ineffective

  • number range holder = registrar

    • „efficient“ on telcos, ITSP‘s

    • might leave consumer behind

  • conclusion: no single source works best

  • so: define Validation Entity as a role

    • VE might collapse with registrar – easy

    • it might not: a chain of trust is required


  • Architecture

    registry

    validation

    entity

    registrar

    validation

    entity

    registrant

    architecture

    registration +

    validation token

    validation

    request

    validation

    entity

    registrar

    validation

    token

    delegation

    request

    registrant


    Validation process
    validation process

    • requires a chain of trust registry <-> VE

      • signing of token with XML-DSIG + certificate

    • contract between VE and registry

      • assigns ID, describes method, trust chain

    • open list of methods

      • regulatory requirement in +43 is by maximum failure rate only

    • token lifetime determines the domain visibility

    • token contents is an audit trail


    Token contents
    token contents

    • token MUST contain:

      • validation „serial number“

      • e164 number

      • validation entity ID

      • method ID

      • registrar for whom validation was carried out

      • create, expiredate

    • MAY contain

      • registrant identity:

        • organisation

        • commercial entity registration number

        • title, firstname, lastname, address, streetname, streetnumber, apt,zip code, country, state

        • phone, fax, email

    • identity geared towards reuse of directory information as per ITU E.115

    • a superset of the hoeneisen-token


    Contacts
    contacts

    • Alexander Mayrhofer enum.at GmbH Phone: +43 1 5056416 34 [email protected]

    • Otmar Lendl enum.at GmbH Phone: +43 1 5056416 33 [email protected]

    • Michael Haberler Internet Foundation Austria phone +43 664 4213465 [email protected]

    • registry specification, registrar manual, registrar toolkit, contracts available at www.enum.at


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