Messages

8/1: The grading is done. Statistics: A - 5, B - 4, C - 4, D - 10, E - 8, F - 9.

• 1a: Most of you happily divide by 3 modulo 270. Except for those that compute exponents modulo 271…
• 1b: While this problem did involve a lot of computation, very few could use Pohlig-Hellman properly.
• 3a: Many wanted the hash function to hide all information about the message, but it doesn't.

17/12: This year's exam and solution sketch.

28/11: Lattice-based cryptography as covered in the lectures and lecture notes is part of the curriculum. (Two specific cryptosystems, LWE and NTRU, mentioned only in the lectures are not on the curriculum.)

24/11: Regarding Problem 4 on the 2008 exam: Stinson uses the equation \(( \delta = k + a \gamma \)), while I used \(( \delta = k - a \gamma \)) in today's lecture, which explains the wrong result…

20/11: Wednesday's exercise class will also be used to recap previous exercises.

16/11: After the summary, I will begin going through old exams, beginning with the 2005 exam.

27/10: The lecture on Monday 30/10 will be at 11-12, not at 10-12 as usual.

16/10: Visiting hours today are cancelled.

23/8: The first exercise class will be on Wednesday 30/8.