基于区块链的物联网访问控制简化模型构建

Simplification Model Construction of Internet Access Control Based on Block Chain

物联网由大多数资源受限的设备组成,具有分散化的拓扑结构,传统的集中式访问控制模型在物联网中面临巨大的挑战。新兴的区块链技术具有和物联网相似的分散化拓扑结构,具有去信任中心、防篡改等特性。结合区块链技术的优势提出了一个简化的访问控制模型,在所提出的模型中,访问策略发布在公共可见的区块链上,使得任何用户在任何时间都知道当前谁对资源具有何种访问权限。还可以通过区块链交易实现对访问权限管理。该模型具有匿名性、抗DDOS攻击和防止欺诈性拒绝访问等安全特性。

The Internet of Things is composed of most resource constrained devices,with decentralized topologies.Traditional centralized access control models face enormous challenges in the Internet of Things.Emerging blockchain technology has decentralized topology similar to that of Internet of Things,with features such as trustless center,tamper proof and so on.We propose a simplified access control model based on the advantages of blockchain technology.In our proposed model,the access policy is published in the common visible blockchain,so that any user knows at any time that currently who has right access to the resource.It can also manage access rights through blockchain transactions.The model has security features such as anonymity,anti-DDOS attacks and fraudulent deny.