A fast mental poker protocol

Wei, Tzer-jen; Wang, Lih-Chung

doi:10.1515/jmc-2012-0004

Cited by 4 publications

References 16 publications

(24 reference statements)

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ROYALE: A Framework for Universally Composable Card Games with Financial Rewards and Penalties Enforcement

David

Dowsley

Larangeira

2019

Financial Cryptography and Data Security

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While many tailor made card game protocols are known, the vast majority of those lack three important features: mechanisms for distributing financial rewards and punishing cheaters, composability guarantees and flexibility, focusing on the specific game of poker. Even though folklore holds that poker protocols can be used to play any card game, this conjecture remains unproven and, in fact, does not hold for a number of protocols (including recent results). We both tackle the problem of constructing protocols for general card games and initiate a treatment of such protocols in the Universal Composability (UC) framework, introducing an ideal functionality that captures card games that use a set of core card operations. Based on this formalism, we introduce Royale, the first UC-secure general card games which supports financial rewards/penalties enforcement. We remark that Royale also yields the first UC-secure poker protocol. Interestingly, Royale performs better than most previous works (that do not have composability guarantees), which we highlight through a detailed concrete complexity analysis and benchmarks from a prototype implementation.

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ROYALE: A Framework for Universally Composable Card Games with Financial Rewards and Penalties Enforcement

David

Dowsley

Larangeira

2019

Financial Cryptography and Data Security

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Instantaneous Decentralized Poker

Bentov

Kumaresan

Miller

2017

Lecture Notes in Computer Science

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We present efficient protocols for amortized secure multiparty computation with penalties and secure cash distribution, of which poker is a prime example. Our protocols have an initial phase where the parties interact with a cryptocurrency network, that then enables them to interact only among themselves over the course of playing many poker games in which money changes hands.The high efficiency of our protocols is achieved by harnessing the power of stateful contracts. Compared to the limited expressive power of Bitcoin scripts, stateful contracts enable richer forms of interaction between standard secure computation and a cryptocurrency.We formalize the stateful contract model and the security notions that our protocols accomplish, and provide proofs in the simulation paradigm. Moreover, we provide a reference implementation in Ethereum/Solidity for the stateful contracts that our protocols are based on.We also adopt our off-chain cash distribution protocols to the special case of stateful duplex micropayment channels, which are of independent interest. In comparison to Bitcoin based payment channels, our duplex channel implementation is more efficient and has additional features.

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21 - Bringing Down the Complexity: Fast Composable Protocols for Card Games Without Secret State

David

Dowsley

Larangeira

2018

Information Security and Privacy

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A fast mental poker protocol

Abstract: Abstract. We present a fast and secure mental poker protocol. It is twice as fast as similar protocols, namely Barnett-Smart's and Castellà-Roca's protocols. This protocol is provably secure under DDH assumption.

Cited by 4 publications

References 16 publications

ROYALE: A Framework for Universally Composable Card Games with Financial Rewards and Penalties Enforcement

ROYALE: A Framework for Universally Composable Card Games with Financial Rewards and Penalties Enforcement

Instantaneous Decentralized Poker

21 - Bringing Down the Complexity: Fast Composable Protocols for Card Games Without Secret State

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