Kleptographic Attacks on E-Voting Schemes

         Marcin Gogolewski, Marek Klonowski, Miroslaw Kutylowski, 
             Przemyslaw Kubiak, Anna Lauks, Filip Zagorski 


We analyze electronic voting schemes and show that in many cases it is quite
easy to implement a kleptographic channel, which is a profound danger for
electronic voting systems. We show serious problems with Neff's scheme. 
We present also attacks on Chaum's visual voting scheme and some related schemes, 
which work at least when implementation is not careful enough.

Keywords: kleptography, electronic voting, receipt voting,
coercion, election integrity, verifiable pseudo-randomness.