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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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