Despite no popular demand, I have collected all the notes from CS261, the course on algorithms for combinatorial optimization problems that I taught in the past term, in one pdf file, available here, and I have created a new page to collect links to my lecture notes.

For the occasion, I have also posted a single file containing the notes from my Spring 2009 class on the foundations of cryptography. As explained in the foreword to the crypto notes, they use a definition of CCA-security that is wrong, that is, a definition that is weaker than the standard one in a way that actually allows potentially dangerous attacks. The weaker definition, however, is much simpler to define and work with, and I think it is pedagogically justified. I believe that everything else in the notes is consistent with standard definitions. As far as I know, the notes are the only place in which one can find a concrete-security treatment of zero knowledge.

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Thanks! And there is demand. Many of us that are not in academic institutions rely on online lecture notes.

Despite my lack of demand, I had quite the intention of doing something like that. You save me this trouble, thank you so much!

Why not do the same with the other course on expanders?

@Anon: I will when I finish typing the five lecture notes that are still missing

Thanks very much for packaging the CS261 material this way. I’ve been following the series and really appreciate this compilation. I did share on reddit/r/csbooks. The moderator is wondering if you plan publish this book in the classical sense.

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