Trusted Third Parties (1)

• TTP are amorphous, range from:

  • low value, low reliance and really just Third Parties not TTPs
  • to, TTPs that couldn’t actually back the risk from the trust
  • to, whole financial frameworks with TTP elements

• TTPs can provide multiple services

  • basic identity certificates (context free or dependent)
    • e.g. this person is Joe Blow vs. this person is Joe Blow a DB customer.
  • on-line certificate verification
  • on-line transaction verification
  • multi-party authentication/authorisation
  • notarization, time stamping or high-end non-repudiation
    • e.g. evidence services
  • insourced certificate management services
  • value add services e.g. repositories, business services, tool-kits

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