810:088 class #15 - week #3 (Friday)
- What is the difference between
Conventional
Cryptography (Symmetric key cryptography)
and
Public key
cryptography (Asymmetric key cryptography)? This was
a test question on the midterm, and the grasp of the essentials
and the difference was not very deep for the class as a whole, yet.
It will be mastered before you take the final exam. MASTERED!
- We went over the exam and did lots of ethereal to discover
more about TCP connection oriented traffic between a web
server and the client (drone-21.cs-ceee.cns.uni.edu was the
client).
- Large file: Here is the 12 MB day15.ethereal
sniffed
capture
that your assignment (started during
the 2nd half of class) is based on. You can use this if you
have ethereal or any packet sniffer elsewhere the CEEE 20.
Remember also that you can use any of the drones from a remote
site, if you have a linux box. Email me if you want the
instructions for how to do that, and lost your notes.
Ethereal captured packet assignment
questions. You started these during class on Friday, July 25th.
- Here are the
five questions for the exercise that was started
in class using the day15.ethereal capture file.
What is Diceware
and what is a PGP passphrase used for?
- PGP overview is
a nice brief article with useful diagrams of the process. Newcomer's
introduction.