AUTHENTICATING PEOPLE |
CHAPTER 6 |
ABOUT THIS CHAPTER
In this chapter, we look at techniques to accurately associate individuals with user identities inside a computer. The discussion will focus on passwords with an introduction to other methods. The chapter examines the following topics:
• The three authentication factors: what you know, have, are
• Passwords, password bias, and average attack space
• Cryptographic building blocks: random choice, one-way hash
• Authentication devices: personal tokens and biometrics
• Basic issues in authentication policy
6.1 Unlocking a Door
We use padlocks, deadbolts, and safes to protect unattended things. We arrange it so that only authorized users may open these locks. We either restrict copies ...
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