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Draft principles and framework for CAP identifiers

V1.0, 21 Jun 2009. WORLD METEOROLOGICAL ORGANIZATION WMO INFORMATION SYSTEM (WIS) WIS Common Alerting Protocol (CAP, X.1303) Implementation Workshop Geneva, Switzerland, 22-23 June 2009. Draft principles and framework for CAP identifiers. Tony Rutkowski Cybersecurity Rapporteur (ITU-T Q.4/17).

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Draft principles and framework for CAP identifiers

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  1. V1.0, 21 Jun 2009 WORLD METEOROLOGICAL ORGANIZATIONWMO INFORMATION SYSTEM (WIS)WIS Common Alerting Protocol (CAP, X.1303)Implementation WorkshopGeneva, Switzerland, 22-23 June 2009 Draft principles and frameworkfor CAP identifiers Tony RutkowskiCybersecurityRapporteur (ITU-T Q.4/17)

  2. Why cooperate globally • CAP can be used by anyone for anything, anywhere, at any time • No way to control CAP use However… • Common interests may exist among user communities regarding “CAP identifiers” concerning • Creation • Administration • Discovery • Verification • Use

  3. CAP Identifier Value Propositions • Enhance the value of the CAP messages • Enable widespread sharing of the related event information • Enable analysis of events over long periods of time • Enhance the security of CAP messages • Enable information associated with the message to be obtained for verification • Enhance the flexibility of CAP messages • Enable new or additional information associated with the message to be obtained, e.g., message status

  4. What are CAP identifiers • message schema or module identifier • individual message identifier • associated event identifier • identifiers for the entities (persons, organizations, or objects, physical or virtual) associated with the handling chain of the message • Creator (source) • Sender • Conveyor • Recipient • identifiers for policies associated with the message • message language identifier

  5. Identifier Principles - Mandatory • CAP identifiers MUST be globally unique in a common namespace • The CAP identifier common namespace MUST accommodate distributed, autonomous, dynamic, extensible CAP uses and communities. • CAP identifiers MUST be structured to enable autonomous, distributed global discovery through hierarchical recursive queries in the hierarchy. • CAP identifiers MUST not exceed a length of [TBD] or a hierarchical depth exceeding [TBD] levels

  6. Identifier Principles - Optional • CAP identifiers SHOULD have minimal internationaliz-ation impediments, e.g., consist of numbers • CAP identifiers SHOULD be structured so that usage, geographical, jurisdictional, and global hierarchical assignments can exist concurrently in the overall namespace (see next slide) • Registrars that assign CAP identifiers SHOULD obtain, with levels of assurance sufficient for the application, information concerning the registrants or objects to which the identifiers are assigned • Registrars that assign CAP identifiers SHOULD, as appropriate for the application or usage, support common structured query-response availability of the registrant or object information or a pointer to the information location for other users within the same community

  7. Namespace Hierarchy Alternatives Geography-Jurisdiction Centric Use Centric Countries Applications 0 1 0 1 Applications Countries 3 3 1 1 3 3 1 1 0 2 0 2 0 2 0 2 Users Users 1 1 1 1 0 0 0 0 CAP Exclusive Hybrid An exclusive CAP Arc (Domain) for all CAP implementations Some combination

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