Kerberos

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Kerberos

• Shawn Bayern
• shawn.bayern_at_yale.edu

Multi-user Macintosh Diana Sherman
(diana.sherman_at_yale.edu) Nathan Willard
(nathan.willard_at_yale.edu)
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Kerberos Basics

• What does Kerberos do?
• Provide secure communication over an insecure
  network
• Authentication
• Session Encryption

• How does it do it?
• Private-key cryptography (DES in K4)
• Database of user credentials
• Trusted authentication service

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How it works
KDC (TGS)
Client
Server
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For more information

• Kerberos site at MIT
• General information, downloads, etc.
• http//web.mit.edu/kerberos
• Kerberos tutorial
• Designing an Authentication System a Dialogue
  in Four Scenes
• http//web.mit.edu/kerberos/www/dialogue.html
• Applied Cryptography
• Cryptography text by Bruce Schneier