[Resource Topic] 2006/142: Rational Secret Sharing, Revisited

Welcome to the resource topic for 2006/142

Rational Secret Sharing, Revisited

Authors: S. Dov Gordon, Jonathan Katz


We consider the problem of secret sharing among n rational players. This problem was introduced by Halpern and Teague (STOC 2004), who claim that a solution is impossible for n=2 but show a solution for the case n\geq 3. Contrary to their claim, we show a protocol for rational secret sharing among n=2 players; our protocol extends to the case n\geq 3, where it is simpler than the Halpern-Teague solution and also offers a number of other advantages. We also show how to avoid the continual involvement of the dealer, in either our own protocol or that of Halpern and Teague.

Our techniques extend to the case of rational players trying to securely compute an arbitrary function, under certain assumptions on the utilities of the players.

ePrint: https://eprint.iacr.org/2006/142

See all topics related to this paper.

Feel free to post resources that are related to this paper below.

Example resources include: implementations, explanation materials, talks, slides, links to previous discussions on other websites.

For more information, see the rules for Resource Topics .