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 From categories: All categories News: Course News, Fall 2009/2010
02 Mar 2010 16:48
in discussion News / Course News, Fall 2009/2010 » Exercise 4 is back

Feedback is always appreciated, right? so take back your HW#4 (and HW#3, if you hadn't already taken it).

Don't worry, we will maintain the conservative approximation of 100 to HW#4 grade when calculating the total HW grade (even though you may have a bit less…)

Exercise 4 is back by , 02 Mar 2010 16:48
02 Feb 2010 12:40
in discussion News / Course News, Fall 2009/2010 » Moed A

Here is Moed A.

I also sent an email with sketch of solutions, but you'd better try to solve the exam on your own first.

Moed A by , 02 Feb 2010 12:40
20 Jan 2010 18:12
in discussion News / Course News, Fall 2009/2010 » First page of the exam

First page of the exam by , 20 Jan 2010 18:12
17 Jan 2010 21:13
in discussion News / Course News, Fall 2009/2010 » Mistake in Q3, HW #4

You'd better prove that $Pr\left(X_i^j \textrm{ is new}\right) > e^{-ijt/|X|$; this will make the next step more plausible.
Thanks to Yossi for pointing this out.

Mistake in Q3, HW #4 by , 17 Jan 2010 21:13
15 Jan 2010 20:53
in discussion News / Course News, Fall 2009/2010 » Sample exams

I plan to go over these exams (as much as time permits) on Tuesday. It will probably
be more useful for you if you take a look at the questions beforehand.

Benny

Re: Sample exams by , 15 Jan 2010 20:53
15 Jan 2010 17:06
in discussion News / Course News, Fall 2009/2010 » Sample exams

We don't have a whole lot of examples, but here are exams from the past years.

Sample exams by , 15 Jan 2010 17:06

In question 5, the third from last line should read "for every degree 2 polynomial" instead of
the previous "degree 3".

It might not be clear from Problem 1 itself, but Prudence is not required to recover $p$ in a single shot;
if, for example, in a single attempt she can rule out 10% of the remaining passwords in the dictionary, then with $\log_{10/9}(2^{30}) \approx 200$ attempts she can single out the correct password.

A clarification about Assignment 3 by , 27 Dec 2009 10:24

We decided you could use another week, so you may submit assignment 3 until December 30th.

Due date of assignment #3 by , 20 Dec 2009 10:07
28 Nov 2009 16:43
in discussion News / Course News, Fall 2009/2010 » Assignment 2, problem 3

Please note that when you are asked to find collisions wrt a hash function H, namely
two mssgs m1,m2 s.t. H(m1)=H(m2), these messages can be of different lengths.

Assignment 2, problem 3 by , 28 Nov 2009 16:43

All problems except problem 3 (the substitution cipher questions) are due on Wed., Nov. 11, 6:20 pm, Israel time.

Problem 3 is due on Sunday, Nov. 15, 5 pm, Israel time.

In both cases, the destination is Rani Hod’s mailbox (second floor, Schreiber building).

Change of Deadline, Assignment 1 by , 08 Nov 2009 21:30
07 Nov 2009 20:47
in discussion News / Course News, Fall 2009/2010 » FAQ

Hints and answers to FAQs appear now on the FAQ page.

Frequently asked questions by , 07 Nov 2009 20:47