Table of Contents

About

An identity is the identifier of an entity. (id + entity = identity)

The key is a mathematical entity, while the owner – and the connection between owner and key – are not.

If we generalize an identity is just an identifier (key).

Key

The identity unique key is called a principal or a subject

Type

An identity may be:

  • anonymous (we don’t know anything about this person/device yet),
  • or named (we know something about them such as an email address / id )