Toward protocols for quantum-ensured privacy and secure voting

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Authors

ZIMAN Mário BUŽEK Vladimír BONANOME Marianna HILLERY Mark

Year of publication 2011
Type Article in Periodical
Magazine / Source Physical Review A
MU Faculty or unit

Faculty of Informatics

Citation
Web http://pra.aps.org/abstract/PRA/v84/i2/e022331
Doi http://dx.doi.org/10.1103/PhysRevA.84.022331
Field Informatics
Keywords Quantum protocols; privacy; volby
Description We present a number of schemes that use quantum mechanics to preserve privacy, in particular, we show that entangled quantum states can be useful in maintaining privacy. We further develop our original proposal [see M. Hillery, M. Ziman, V. Bužek and M. Bieliková Phys. Lett. A 349 75 (2006)] for protecting privacy in voting, and examine its security under certain types of attacks, in particular dishonest voters and external eavesdroppers. A variation of these quantum-based schemes can be used for multiparty function evaluation. We consider functions corresponding to group multiplication of N group elements, with each element chosen by a different party. We show how quantum mechanics can be useful in maintaining the privacy of the choices group elements.
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