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D-Shuffle for Pret a Voter

机译:D-Shuffle用于Pret A选民

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摘要

Pret a 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 Pret a Voter relies on encoding the vote using a randomized candidate list in the ballots. In a few variants of Pret a 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 Pret a Voter scheme ensures its security against: "Authority Knowledge Attack" and "Chain of Custody Attack".
机译:Proc A选民是一种端到端可验证的投票方案,它使用基于纸张的选票形式,这些标志形式被转变为加密收据。该方案旨在灵活,安全,提供熟悉和轻松的投票体验。 ProTe的投票保密,选民依赖于使用选票中的随机候选名单编码投票。在Pret A Prover的几种变体中,在选票中使用可验证的洗牌,以便随机化候选者。可验证的洗牌是重新加密和授权密文列表的加密原语。它们提供了洗牌的正确性证据,并保留排列的保密。本文提出了一种新的可验证洗牌“D-Shuffle”,其有效。我们为D-Shuffle提供安全证明。此外,我们表明,使用D-Shuffle用于在Pret A的Proger方案中产生投票,确保其安全性反对:“权威知识攻击”和“监管链攻击”。

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