References & Citations
Computer Science > Cryptography and Security
Title: Earn While You Reveal: Private Set Intersection that Rewards Participants
(Submitted on 10 Jan 2023 (v1), last revised 26 Apr 2024 (this version, v3))
Abstract: In Private Set Intersection protocols (PSIs), a non-empty result always reveals something about the private input sets of the parties. Moreover, in various variants of PSI, not all parties necessarily receive or are interested in the result. Nevertheless, to date, the literature has assumed that those parties who do not receive or are not interested in the result still contribute their private input sets to the PSI for free, although doing so would cost them their privacy. In this work, for the first time, we propose a multi-party PSI, called "Anesidora", that rewards parties who contribute their private input sets to the protocol. Anesidora is efficient; it mainly relies on symmetric key primitives and its computation and communication complexities are linear with the number of parties and set cardinality. It remains secure even if the majority of parties are corrupted by active colluding adversaries.
Submission history
From: Aydin Abadi [view email][v1] Tue, 10 Jan 2023 10:22:55 GMT (3890kb,D)
[v2] Fri, 26 May 2023 14:15:23 GMT (8036kb,D)
[v3] Fri, 26 Apr 2024 09:44:20 GMT (6252kb,D)
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