ASIA unversity:Item 310904400/115536
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    Please use this identifier to cite or link to this item: http://asiair.asia.edu.tw/ir/handle/310904400/115536


    Title: Blockchain-based random auditor committee for integrity verification
    Authors: Che, Lanxiang;Chen, Lanxiang;Fu, Qingxiao;Fu, Qingxiao;Mu, Yi;Mu, Yi;Zen, Lingfang;Zeng, Lingfang;Reza, Fatemeh;Rezaeibagha, Fatemeh;黃明祥;Hwang, Min-Shiang
    Contributors: 資訊電機學院資訊工程學系
    Keywords: Cloud storage；Integrity verification；Random auditor committee；Election algorithm；Blockchain
    Date: 2022-06-01
    Issue Date: 2023-03-29 02:32:25 (UTC+0)
    Publisher: 亞洲大學
    Abstract: With the popularity of cloud storage, integrity verification for outsourced data has attracted more and more attention. The majority of existing research works rely on a unique third-party auditor (TPA) or fixed TPAs to audit the integrity of outsourced data, and thus they are vulnerable to DoS and collusion attacks as the TPA is not completely trusted. To conquer this problem, a blockchain-based random auditor committee is proposed to replace the fixed TPAs for the integrity verification (call scheme for short). The proposed blockchain consensus algorithm utilizes a verifiable random function (VRF) to select the third-party auditor committee (TPAC) which performs contract verification. The leader of TPAs (LTPA) packs the verification proof into a blockchain called verification chain. The main idea is employing the output of a VRF for leader election to make it probabilistic, such that specific nodes cannot be targeted in advance and a certain fraction of the nodes being malicious can be tolerated. We present rigorous security analysis to demonstrate the security of the proposed scheme. Meanwhile, the comprehensive performance evaluation shows that the proposed scheme improves the performance of data integrity verification effectively.
    Appears in Collections:[Department of Computer Science and Information Engineering] Journal Artical

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