Efficient Privacy-Preserving Reputation Evaluation in Decentralized Environments

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概要

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• A decentralized secure protocol for casting trust rating in reputation systems (StR protocol) is lately proposed by Dimitriou and Michalas, and the StR protocol is verified to be faster than the previous work providing anonymous feedback. In this letter, we present new enhanced scheme of StR. Compared with StR protocol, our new approach attains the exactly same security, but requires less processing time and about half communication overheads. Therefore, we improve the performance without sacrificing any security, especially the communication delay is dramatically reduced.

著者

• Takagi Tsuyoshi

  Institute For Molecular And Cellular Biology Osaka University

• ZHU Youwen

  Institute of Mathematics for Industry, Kyushu University

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