Research on Architecture of Risk Assessment System Based on Block Chain

• 作者: Min Yang Peilin He Qirun Wang Shibin Zhang Yang Zhao
• 来源期刊: 计算机、材料和连续体(英文)
• 学科: 工学
• 关键词: RISK ASSESSMENT system ARCHITECTURE BLOCK CHAIN DECENTRALIZATION
• 年，卷（期）: 2019,（8）
• 页码范围: 677-686
• 页数: 10页
• 分类号: TP3

摘要

The risk assessment system has been applied to the information security,energy,medical and other industries.Through the risk assessment system,it is possible to quantify the possibility of the impact or loss caused by an event before or after an event,thereby avoiding the risk or reducing the loss.However,the existing risk assessment system architecture is mostly a centralized architecture,which could lead to problems such as data leakage,tampering,and central cheating.Combined with the technology of block chain,which has the characteristics of decentralization,security and credibility,collective maintenance,and untamperability.This paper proposes a new block chainbased risk assessment system architecture and a consensus mechanism algorithm based on DPOS improvement.This architecture uses an improved consensus mechanism to achieve a safe and efficient risk assessment solving the problem of data tampering in the risk assessment process,avoiding data leakage caused by improper data storage.A convenient,safe and fast risk assessment is achieved in conjunction with the improved consensus mechanism.In addition,by comparing existing risk assessment architecture,the advantages and impacts of the new block chain-based risk assessment system architecture are analyzed.