Chapter 13

Authentication

ANTIPHOLUS OF SYRACUSE: To me she speaks; she moves me for her theme!

What, was I married to her in my dream?

Or sleep I now and think I hear all this?

What error drives our eyes and ears amiss?

Until I know this sure uncertainty, I’ll entertain the offer’d fallacy

The Comedy of Errors, II, ii, 185–190.

Authentication is the binding of an identity to a principal. Network-based authentication mechanisms require a principal to authenticate to a single system, either local or remote. The authentication is then propagated. This chapter explores the question of authentication to a single system.

13.1 Authentication Basics

Subjects act on behalf of some other, external entity. The identity of that entity controls the ...

Get Computer Security Art and Science, 2nd Edition now with the O’Reilly learning platform.

O’Reilly members experience live online training, plus books, videos, and digital content from nearly 200 publishers.