CS 5950/6030: Network Security - Fall 2005

Announcements

 

F, 10/21/05

For information on list of topics see Midterm Topics (part of Class 22).

 

W, 10/19/05

Midterm exam is scheduled for F, 10/28/05. It will test your understanding of material covered in class.

Look or information on list of topics in this announcement file.

 

 

M, 10/17/05

----- Item 1)

Lab manual is available for loan in the CS Main Office. It can be borrowed during workdays, overnight, or over a weekend.

During a workday, the manual can be borrowed for maximum 2 hrs per group per day.

Overnight loan is available after 4:30 pm and due next workday before 9:30 a.m. Overnight loan is permitted at most once per week per group with the following exception: If the manual is not borrowed by 4:50 p.m., any group can borrow it.

Weekend loan is available on Friday after 4:30 p.m. and due by 9:30 a.m. on Monday. Preferably, 2 project groups should arrange to share the manual over the weekend. Weekend loan is permitted at most once per month per group with the following exception: If the manual is not borrowed by 4:50 p.m., any group can borrow it.

 

----- Item 2)

We have six computers reserved for this course in the C-208 lab. Sign up sheets is available to make reservations. (Please note that only one reservation can be “active” at a time. This means that a reservation for the next lab can be made only after your previous lab starts.)

Lab Use Information and Rules

    

1)      6 computers (S1 – S6) are reserved for CS5950/6030 projects in the C-208 lab.

 

2)       Lab hours are: 10 a.m. – 9 p.m. on M-H and 10 a.m. – 6 p.m. on F.

 

3)      Set up or get a single project group account for your group project. Only this account can be used for your project work..

      Please use account names of the form: Project-Pi or Project-Ti (e.g., Project-P2).

 

4)      Use only one machine at a time per project group. (This assumes that Virtual PC will be installed, to emulate 2 or 3 machines per physical computer in the lab).

 

5)      Use the sign up sheet in the lab to make reservations for lab computers.

 

6)      Only one reservation may be “active” for a project group at a time. This means that a reservation for the next lab can be made only after your previous lab starts.

 

7)      Time slots foe systems not occupied within 15 minutes after the scheduled start time may be taken over by other project groups.

 

8)      Write your group ID and your name in the first reserved time slot, and your group ID (e.g., P2) in  each consecutive time slot. 

 

 

Sa, 9/17/05

Class slides for F, 9/16/05 have been modified to better explain the example showing that columnar transposition cipher is a block cipher (that is, in general R can’t see i decoded characters of P after receiving i chars of C).

The source of my confusion: I talked about R (the receiver) but thought about a cryptanalyst.  Of course, R knows the key and the block size! We want R’s decoding to be easy, right?  (And we want adversary cryptanalyst’s work to be tough, so we hide key and block size from him!)

 

 

W, 9/14/05

1) All but one student signed the NEW petition to switch from 3 to 2 classes per week, which specifies that the said two classes will be held on Mondays and Wednesdays, from 3:00 PM till 4:15 PM; the Friday class will be eliminated.

2) Please check if you can accept rescheduling the final exam from Thursday, Dec. 8, to an earlier day of the Final Exam week. This is also a student request.

 

 

Tu, 9/13/05

All but one student signed the petition to switch from 3 to 2 classes per week. Last Monday (9/12), the students in the classroom agreed that (if all signatures are obtained) the M and W classes should be extended till 4:15, and the F class eliminated.

 

 

Su, 9/11/05

Please seem me ASAP if you have missed the last class (F, 9/9) and have not signed the student petition to switch from 3 to 2 classes per week. During the class all but four students signed the petition.

In-class consensus was to have the M and W classes from 3:00 PM till 4:15 PM, and eliminate the F class. Anybody who has problems with this consensus, should see me.