Cross-Domain Based Data Sharing Scheme in Cooperative Edge Computing

With the development of Internet technology, the demand for openness and sharing of information in the network grows rapidly. Data sharing in one domain can not satisfy users' requirement. What a user needs may be the data in another management domain, so there is an urgent need for a secure way to share data among different domains. At present, some web technology (JSONP, server proxy, cross frame and so on) and attribute-based encryption (ABE) are main methods to solve cross-domain sharing. The main problem cross-domain sharing face is security of data and authentication among different domains. In edge computing model, the cloud service provider is a trust root which links all the edge computing nodes together. Edge computing node is the administrator of one domain, and responsible for data transmission and processing. In this paper, we propose a secure way to share data among different domains by edge computing model, we regard the edge computing node and managed edge equipment as a domain, and all the domains are linked together by the cloud, it is easy to solve the problem of authentication among different domains in this way. Meanwhile, RSA algorithm and ciphertext-policy attribute-based encryption (CP-ABE) are used to ensure the confidentiality of the information and one-to-many sharing of data. Finally, analysis shows that our scheme is secure.