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…)

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

]]>Thanks to Yossi for pointing this out. ]]>

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. ]]>

two mssgs m1,m2 s.t. H(m1)=H(m2), these messages can be of

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).

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