[Resource Topic] 2016/417: New Tools for Multi-Party Computation

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New Tools for Multi-Party Computation

Authors: Lisa Kohl


In this work we extend the electronic voting scheme introduced by R. Cramer, R. Gennaro and B. Schoenmakers in [CGS97]. In the original paper the privacy of votes is based on the decisional Diffie-Hellman or respectively the higher residuosity assumption. Since both problems can be solved efficiently in the event of quantum computers, a desirable goal is to implement the voting scheme with privacy based on different assumptions. We present the framework and a concrete instantiation for an efficient solution with privacy based on learning with errors over rings. Additionally we show how to achieve privacy assuming hardness of worst-case lattice problems, which are well analyzed and conjectured to be secure against quantum computers.

ePrint: https://eprint.iacr.org/2016/417

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