The Problem of Digital Identity (Logically Speaking)
The problem of digital identity can be reduced to a simple logical model consisting of an identifier, an authenticator and a claim within a context, all of which, can be attributed to an entity.
From this model a set of logical propositions can be produced:
- Identifiers, authenticators and claims exist and are only valid within a context.
- An identifier is associated with an authenticator
- An identifier is associated with a claim.
- An identifier is attributed to a entity.
Using the above, within a given context, a digital identity can be regarded as:
- Proof of control of an identifier that is associated with authenticator
- Proof of ownership of a claim that is associated with an identifier
From this, we can say:
- A digital identity can be regarded as a claim that is attributed to an entity through Proof of control and Proof of ownership.