A smart contract approach to access control based on distributed identities and roles

Abstract

With the continuous development of digital communication in Internet of Things(IOT) and the demand of IOT for advanced interoperability and collaboration, organizations and entities directly need to interact with data. Access control technology is the key to current data protection and system management. In this paper, we details the method framework, contract design, and execution process of the DID-based blockchain access control, and analyze for data leakage, security issues, data storage and system complexity in the current solution. In order to solve the current problems, this paper combines blockchain technology with identity access control scheme based on the application of distributed identification; Secondly, a detailed of DID mark and smart contract interaction mechanism are design. Finally, an implementation scheme is proposed on this scheme combined with the IoT scenario and is demonstrated to run in a real scenario. The usability, security and efficiency of the framework are evaluated in simulation tests and performance.