基于无证书密码体制和区块链结合的物联网设备访问控制方案研究

Research on Access Control Scheme of IoT Device Based on Combination of Certificateless Cryptography and Blockchain

针对物联网场景中的设备细粒度访问控制,提出一种高效实现方案,采用基于无证书密码体制和区块链访问控制相结合的方式,利用高效的无证书密码技术实现区块链中各种节点的身份管理,通过区块链维护节点关系和访问权限,通过基于智能合约的访问验证体系实现访问管控,形成安全的物联网细粒度访问控制体系;采用契合区块链和物联网的无证书密钥体系,设计高效的基于区块链的访问控制,提高访问效率、动态性、系统扩展性和伸缩性,降低部署成本。

Aiming at the fine-grained access control of devices in the Internet of Things scenario,it proposes an efficient implementation scheme.It adopt.combination of certificate-free cryptosystem and blockchain access control,and uses efficient certificate free cryptography to implement the identity management of various nodes in the blockchain.The node relationship and access authority are maintained through the blockchain,the access management and control is realized through the smart contract based access verification system,which form.secure Internet of Things fine-grained access control system.The certificate-less key system that fits blockchain and Internet of things is adopted,and the efficient access control system based on block-chain is designed,which could improve access efficiency,dynamism,system scalability and scalability,and reduce deploy-ment cost.