Summary for Week 7

• Lecture 12: We covered the Digital Signature Algorithm (DSA). We also discussed a one-time password scheme by Leslie Lamport (this construction used a mechanism called hash chains). We start our discussion on authentication protocols. We covered the following authentication protocols: Needham-Schroeder and Denning.
  Date: Tu, 10/23/2007.
• Lecture 13: We finished our discussion on authentication protocols. We finished our discussion Kereberos. Kereberos version 5 and interrealm authentication were left as reading assignments.
  Date: Th, 10/25/2007.