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Foundations of Network and Computer Security J J ohn Black Lecture #22 Oct 21 st 2009 CSCI 6268/TLEN 5550, Fall 2009
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Announcements Remember to read the virus paper Midterm is next time (Friday) Today we’ll do an overview, plus quiz solutions
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What to Study Easiest way to study: –Review the slides (all online) –Review the two reading assignments –Review the quizzes More time-consuming way to study: –Review the lectures
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Test Format/Content Just like the quizzes Almost anything from the lectures/reading is fair game but… –I won’t ask you to expand acronyms –I won’t ask you to produce OpenSSL commands
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Content (cont) Questions will test understanding –Do you understand basic definitions Eg, what is a blockcipher, is computational indistinguishability, one-time pad, ACMA, etc How does a signature differ from a MAC? –Do you understand why algorithms work a certain way Eg, why does CBCMAC fail if message lengths vary? Why can’t K2=K3 in XCBC
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Content (cont) Networking content –We did a review and the questions will correspondingly be less in-depth Eg, how does TCP differ from UDP When are fragmented packets reassembled –But, I won’t test you on things we didn’t review Eg, explain the TCP sliding window algorithm
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We have 50 mins This is a 50 min exam, so it will be similar in length to the quizzes –I’d rather give a longer test, but this is a constraint with the MWF schedule Expect a slightly longer test with fewer “hard” problems –A “hard” problem is something like the question about 2-round DES
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Quiz Review
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