D-shuffle for Prêt à Voter

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Abstract

Prêt à Voter is an end-to-end verifiable voting scheme, that uses paper based ballot forms that are turned into encrypted receipts. The scheme was designed to be flexible, secure and to offer voters a familiar and easy voting experience. Secrecy of the vote in Prêt à Voter relies on encoding the vote using a randomized candidate list in the ballots. In a few variants of Prêt à Voter a verifiable shuffle was used in the ballot generation phase in order to randomize the candidates. Verifiable shuffles are cryptographic primitives that re-encrypt and permute a list of ciphertexts. They provide proofs of correctness of the shuffle and preserve secrecy of the permutation. This paper proposes a new verifiable shuffle "D-Shuffle" that is efficient. We provide a security proof for the D-Shuffle. Furthermore, we show that using the D-shuffle for generating ballots in Prêt à Voter scheme ensures its security against: "Authority Knowledge Attack" and "Chain of Custody Attack". © 2014 IFIP International Federation for Information Processing.

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APA

Khader, D. (2014). D-shuffle for Prêt à Voter. In Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) (Vol. 8735 LNCS, pp. 104–117). Springer Verlag. https://doi.org/10.1007/978-3-662-44885-4_9

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