Kaleidoscope: an efficient poker protocol with payment distribution and penalty enforcement

Bernardo David, Rafael Dowsley, Mario Larangeira

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

5 Citations (Scopus)


The two main challenges in deploying real world secure poker protocols lie in enforcing the distribution of rewards and dealing with misbehaving/aborting parties. Using recent advances in cryptocurrencies and blockchain techniques, Kumaresan et al. (CCS 2015) and Bentov et al. (ASIACRYPT 2017) were able to solve those problems for the general case of secure multiparty computation. However, in the specific case of secure poker, they leave major open problems in terms of efficiency and security. This work tackles these problems by presenting the first full-fledged simulation-based security definition for secure poker and the first fully-simulatable secure poker protocol that provably realizes such a security definition. Our protocol provably enforces rewards distribution and penalties for misbehaving parties, while achieving efficiency comparable to previous tailor-made poker protocols, which do not have formal security proofs and rewards/penalties enforcement. Moreover, our protocol achieves reduced on-chain storage requirements for the penalties and rewards enforcement mechanism.

Original languageEnglish
Title of host publicationFinancial Cryptography and Data Security
Subtitle of host publication22nd International Conference, FC 2018 Nieuwpoort, Curaçao, February 26 – March 2, 2018 Revised Selected Papers
EditorsSarah Meiklejohn, Kazue Sako
Place of PublicationBerlin Germany
Number of pages20
ISBN (Electronic)9783662583876
ISBN (Print)9783662583869
Publication statusPublished - 2018
Externally publishedYes
EventFinancial Cryptography and Data Security Conference 2018 - Nieuwpoort, Belgium
Duration: 26 Feb 20182 Mar 2018
Conference number: 22nd
https://link.springer.com/book/10.1007/978-3-662-58387-6 (Proceedings )
https://fc18.ifca.ai (Website)

Publication series

NameLecture Notes in Computer Science
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349


ConferenceFinancial Cryptography and Data Security Conference 2018
Abbreviated titleFC 2018
Internet address

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