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

Carsten Baum, Bernardo David, Rafael Dowsley

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Abstrakt

While many tailor made card game protocols are known, the vast majority of those lack three important features: mechanisms for distributing nancial rewards and punishing cheaters, composability guarantees and exibility, focusing on the specic 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 rst UC-secure general card games which supports - nancial rewards/penalties enforcement. We remark that Royale also yields the rst 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.
OriginalsprogEngelsk
TitelFinancial Cryptography and Data Security. FC 2019.
RedaktørerIan Goldberg, Tyler Moore
Antal sider18
ForlagSpringer
Publikationsdato30 sep. 2019
Sider282-300
ISBN (Trykt)978-3-030-32100-0
ISBN (Elektronisk)978-3-030-32101-7
StatusUdgivet - 30 sep. 2019
BegivenhedFinancial Cryptography and Data Security (FC 2019) -
Varighed: 18 feb. 201922 feb. 2019

Konference

KonferenceFinancial Cryptography and Data Security (FC 2019)
Periode18/02/201922/02/2019
NavnLecture Notes in Computer Science
Vol/bind11598

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