结合智能合约和MADM信誉评估的匿名区构建方案

Anonymous Zone Construction Scheme Combining Smart Contract and MADM Credit Evaluation

针对分布式k匿名技术在匿名区构建过程的用户信任问题,提出了一种结合智能合约和信誉评估的匿名区构建方案。首先,引入匿名区构建过程中涉及的多个属性,通过多属性决策(MADM)模型来量化用户在匿名区构建过程中的信誉指标,并转化为信誉值;其次,结合区块链技术,设计基于信誉值评估的智能合约函数;最后,通过智能合约验证用户的身份信息并自动计算用户的信誉值,请求并协作用户仅通过智能合约进行交互完成匿名区的构建。实验结果表明,所提方案有较低的通信开销和计算延迟,保证匿名区域的生成效率,为用户的位置隐私提供了更好的保护。

Aiming at the trust problem among users in the construction process of distributed k-anonymity technology,an anonymous zone construction scheme combining credit evaluation and smart contracts is proposed.Firstly,multiple attributes involved in the anonymous zone construction process are introduced to quantify the user's credit indicators in the anonymous zone construction and convert them into credit values through a multi-attribute decision making(MADM).Secondly,combined with blockchain technology,a smart contract function based on credit value evaluation is designed.Finally,the smart contract function verifies the user's identity information and automatically calculates the user's reputation value,and requests the user and collaborative users to only interact through the smart contract to complete the construction of the anonymous area.The experimental results show that the proposed scheme has lower communication overhead and calculation delay,which ensures the generation efficiency of anonymous regions and provides better protection for users'location privacy.