摘要： 为控制疫情传播，传统的传染病风险管理方案大多采用中心化的管理模式，该模式存在着隐私信息易泄露、数据易被篡改、信息难以有效利用等问题。随着区块链技术的发展，其去中心化、防篡改、可追溯的特性为解决上述问题提供了新的思路。基于区块链技术，提出一种安全、高效的传染病风险管理方案。方案利用隐私集合计算对数据进行处理，并利用区块链技术对数据进行记录，在保护隐私数据安全的同时，实现数据的高效处理，为更好地防控突发性传染病提供了技术保障。

中图分类号： TP309
文献标识码： A
DOI： 10.19358/j.issn.2096-5133.2021.05.004
引用格式： 范勋峰，杨文梯，关志涛. 基于区块链的传染病风险管理方案[J].信息技术与网络安全，2021，40(5)：20-26.

Infectious disease risk management scheme based on blockchain

Abstract： With the pandemic of COVID-19, the management of infectious disease transmission has also received the attention of experts. The current centralized information storage and processing strategies have negative situations such as leakage of private information, tampering with stored data, processing information effectively. With the development of blockchain, the decentralization, data non-tampering, and traceability of the blockchain provide new ideas for solving the above problems. The paper proposes an infectious disease risk management scheme based on blockchain. The scheme uses private set operation to process data, and uses blockchain to record data. The solution realizes the security and efficient processing of private data and prevents data from being tampered with, which provides technical guarantee for better prevention and control of infectious diseases.

Key words : blockchain；set operation；privacy-preserving；contact tracing