Lecture notes for 4/5 (Hashed El Gamal from CDH)

I was unhappy with the way my lecture went today (although happy that an error in my notes/proof sketch was caught by one of you!) and so I’ve rewritten up my notes for this lecture.  Here they are Hashed El Gamal from CDH.

I wanted you to have a clean version of the games for this proof, because you may want to use the same trick –of using the random oracle as a way to collect hash queries, looking for one particular “winning” query– for one of the problems on HW5…

 

 

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Author: Tom Shrimpton

Associate Professor of Computer Science, University of Florida

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