分散式環境中基於聲譽的信任度評估機制Reputation-based
Trust Evaluation Mechanism for Decentralized Environments
許仁傑
(Jen-Chieh Hsu)
國立政治大學
資訊科學系
台北市文山區指南路二段64號
詹琨泰 (Kun-Tai Chan)
國立政治大學
資訊科學系
台北市文山區指南路二段64號
左瑞麟Raylin Tso
國立政治大學
資訊科學系
台北市文山區指南路二段64號
摘要
近年來區塊鏈技術及其相關應用成為熱門焦點,區塊鏈最大的特色之一即為去中心化,然而在去中心化的分散式網路中我們很難判斷對方是否可信,在傳統簽章系統中我們透過可信賴第三方擔任憑證中心為用戶簽發金鑰憑證以此建立用戶之間的信賴關係,但要在區塊鏈此種分散式網路中找到一個可信賴第三方實屬不易,並且可能會與區塊鏈的去中心化之特性背道而馳,因此本研究參考PGP信任網與六度分隔理論的概念建立一套可適用於分散式環境中基於聲譽的信任度評分機制,將此機制實現一個信任度評估機制購物平台,目的希望能幫助用戶更容易判斷陌生人是否可信,以降低受騙風險。
關鍵字:
區塊鏈、去中心化、PGP、智能合約、信任度
Abstract
In recent years, the blockchain
technology and its relevant applications have become hot topics. The greatest feature of the blockchain
is the decentralization. Nonetheless, it is difficult for us to judge whether
the other person get involved in the decentralized network is credible.
Furthermore, it is difficult to find a reliable third party in such a
point-to-point network. Consequently, this paper utilizes the web of trust and the theoretical concepts of six degrees of separation to establish a set of reputation-based trust
evaluation mechanism for decentralized environments. It is expected that
achievements of the paper can facilitate people’s judgment regarding the
reliability of strangers and reduce the risks of being deceived.
Keywords:
block
chain, decentralization, PGP, smart contract, trust degree.