Basics¾Authentication: the binding of identity to a subject¾The identity is that of an external entity (e.g. my identity, Matt, etc.)¾The subject is a computer entity (e g a processThe subject is a computer entity (e.g. a process, etc.)2GWU CS 172/283 - Autumn 2009Holmblad - Lecture 06 – Part 2 - Rev 20091103
Establishing Identity¾Establishing Identity can be based on determining one or more of the following¾Whatthe entity knows(eg.a password)¾Whatthe entity has(eg.a badge, a smart card)¾Wh t thtiti(fii ttilWhatthe entity iseg.fingerprints, retinal characteristics)¾Where the entity is (egIn front of a particular terminal)Wherethe entity is (. In front of a particular terminal)3GWU CS 172/283 - Autumn 2009Holmblad - Lecture 06 – Part 2 - Rev 20091103
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