Explicit Display -- Basic online Identification

Page #453 of Chapter: Crypto-for-the-rest-of-us

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A verifier is satisfied with the claimed online identity if shown an expected fixed identifier (password, PIN, key).

The fixed identifier can be compromised at:

  • The prover's sphere
  • The verifier's sphere
  • en route

    Special concern for multi-use fixed identifier: when used for several verifiers. A compromised single verifier will compromise all.

    Explicit Identifiers are categorized as:

  • Modifiable
  • Non-Modifiable

    Modifiable identifiers allow for quick recovery of a compromised id, while non-modifiable give the hackers a permanent advantage.

    Non modifiable identifiers are divided to common social parameters (e.g. mother maiden name, social security number), and to biometric identifiers (fingerprint, iris, palm, DNA).

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