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       Week 03 -- Class notes
       
       Reading assignment: Parmer chapter 3 and Anderson chapters 3 & 4.
       
       This week we talked about authentication and concentrate on 
       passwords and keys. We also had the first quiz, just to see how we
       are doing in general.  The reading material for this week is Parmer
       chapter 3 and Anderson chapters 3 and 4.
       
       We had our first quiz this week. There were very good responses,
       and some not so good. But in general, it was a good exercise.
       
       Question one required high level understanding of protocol design
       and primitives. There were some very good answers to this question