无线电工程

针对传统食用菌溯源过程中存在数据篡改、管理中心化等问题，在分析食用菌供应链具体业务流程的基础上，构建基于区块链的食用菌供应链溯源模型。供应链的参与者上传信息到区块链之前，利用国密算法中分组加密算法和椭圆曲线加密算法相结合的方式进行加密，将密文上传到星际文件系统，返回哈希地址和加密的密钥上传到区块链，减缓链上的存储压力；监管方利用国密算法中椭圆曲线加密算法与可验证秘密共享方案相结合，保护数据隐私、防止数据易篡改。以上述溯源方案为基础，利用国密算法通过智能合约实现溯源数据加密。通过扩散性测试和性能测试，数据加密安全性和查询效率能够满足食用菌溯源的实际需求，为区块链应用在食用菌溯源方面提供了参考。

To deal with the problems such as data tampering and centralized management in the traditional traceability process of edible fungi, the traceability model of edible fungi supply chain based on blockchain is constructed on the basis of analyzing the specific business process of the edible fungi supply chain. Before the supply chain participants upload the information to the blockchain, they use the combination of the block encryption algorithm and the elliptic curve encryption algorithm in the national cryptographic algorithm for encryption, upload the ciphertext to the interstellar file system, and upload the returned hash address and encrypted key to the blockchain to reduce the storage pressure on the chain. The supervisor uses the elliptic curve algorithm in the national cryptographic algorithm and verifiable secret sharing scheme to protect data privacy and prevent data from being easily tampered. Based on the above traceability scheme, the traceability data encryption is realized through smart contract using the national cryptographic algorithm. The diffusion test and performance test show that the data encryption security and query efficiency can meet the actual demand of edible fungi traceability, providing a reference for blockchain applications in edible fungi traceability.