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I-Card

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Generic Definitions

  • See http://en.wikipedia.org/wiki/I-card (The page Paul started)
  • See http://en.wikipedia.org/wiki/Information_Card (The page Mike Jones (Microsoft) started)
  • For the good of the industry Paul and Mike are *trying* to converge the definitions. This involves compromises on both sides. Microsoft claims that "Information Card" is a generic term, but historically has used it to mean the two kinds of cards supported by CardSpace. Through discussion they've been updating Information Card wikipedia page to be less CardSpace-limited.

I-Card: Representation in Persona Data Model

I-Cards: As implemented in Higgins I-Card Service 1.1

I-Card Types

Higgins defines three I-Card Interfaces. Two are required and one is optional

I-Card Types: Required Interfaces

  • All I-Cards implement the generic, base ICard interface. It includes methods to get the issuer of a card, the background image of a card, the display name of a card, the supported attribute/claim schema of the data retrieveable by the card, a way to retrieve the current value(s) of the claim(s) of the card, and so on.
  • All I-Cards implement the ITokenCard interface whose prominent feature is the getDigitalIdentity method that returns a signed security token that includes the claims and their values

I-Cards and the I-Card Registry

  • I-Cards are implemented, instantiate and managed by plug-ins called I-Card Providers
  • All I-Card Providers must support the two required interfaces (including ITokenCard)
  • Managed I-Card Providers are responsible for interactions with external IdP/STSes and/or attribute sources (e.g. IdAS)
  • I-Card Providers are responsible for persistence and encryption of their I-Card instances (user can control where (e.g. on the net, in thumbdrive) each card is stored)

I-Card Accessed List

  • The I-Card Registry maintains an accessed list for each card that provides the history of what parties have at one time or another been granted access to the card
  • It is list of triples:
    • Relying Party’s URL
    • Timestamp of first access
    • Timestamp of most recent access
  • Notes
    • Valery thinks that this accessed list maintenance should be an I-Card Provider responsibility
    • This accessed list history is not exported with the card when a card is exported.
    • Should the accessed list be "clearable" by the user?
    • Should we be able to export an entire I-Card Registry?


See Also

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