计算机技术与发展

随着Covid-19爆发，健康码成为生活中不可或缺的一部分。尽管被广泛关注和运用，但是目前健康码存在着信息不安全和个人隐私泄露等问题。为了解决这些问题，通过区块链技术，提出一种基于以太坊智能合约的健康码方案。首先，分析了健康码防疫工作中的不足之处，介绍了区块链技术去中心化、不可篡改、可追溯等特点，研究了区块链技术与健康码相结合的可行性；然后，介绍了智能合约属性和机制，详细描述了业务逻辑和系统架构。通过将非对称加密和区块链相结合，满足了健康码信息安全和隐私保护的需求。仿真实验证明了健康码方案的可行性。通过基于以太坊智能合约的健康码平台与传统健康码进行对比，证明了该方案能够有效解决健康码信息安全、数据孤岛和用户隐私泄露的问题。

With the outbreak of Covid-19,health codes have become an integral part of life. Although it has been widely concerned and used, the current health code has problems such as information insecurity and personal privacy leakage. In order to solve these problems, we propose a health code scheme based on Ethereum smart contracts with blockchain technology. Firstly, we analyze the shortcomings of the health code epidemic prevention work, introduce the characteristics of blockchain technology such as decentralization, non-tampering, and traceability, and study the feasibility of blockchain technology application with health code. Then, the smart contract properties and mechanisms are introduced, and the business logic and system architecture are described in detail. By combining asymmetric encryption and blockchain, it meets the needs of health code information security and privacy protection. The feasibility of the health code scheme is verified by simulation experiments. By comparing the health code platform based on the Ethereum smart contract with the traditional health code, it is proved that the proposed solution can effectively solve the problems of health code information security, data silos and user privacy leakage.