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arXiv · 1910.14269

Outsourcing Computation: the Minimal Refereed Mechanism

Yuqing Kong·Chris Peikert·Grant Schoenebeck·Biaoshuai Tao
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Abstract

We consider a setting where a verifier with limited computation power delegates a resource intensive computation task---which requires a $T\times S$ computation tableau---to two provers where the provers are rational in that each prover maximizes their own payoff---taking into account losses incurred by the cost of computation. We design a mechanism called the Minimal Refereed Mechanism (MRM) such that if the verifier has $O(\log S + \log T)$ time and $O(\log S + \log T)$ space computation power, then both provers will provide a honest result without the verifier putting any effort to verify the results. The amount of computation required for the provers (and thus the cost) is a multiplicative $\log S$-factor more than the computation itself, making this schema efficient especially for low-space computations.

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Yuqing Kong, Chris Peikert, Grant Schoenebeck, Biaoshuai Tao. 2019-10-31. Outsourcing Computation: the Minimal Refereed Mechanism. https://doi.org/10.1007/978-3-030-35389-6_19

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