A Secure Data Access Control Scheme Without Bilinear Pairing in Edge Computing

Edge computing, as an extension of cloud computing, subcontracts the personal private data to edge nodes on the edge network of Internet of Things (IoT) to decrease transmission delay and network congestion. So, a major security concern in edge computing is access control issues for shared data. In this paper we introduce a scheme without bilinear pairing encryption (Un-BPE) to provide access control in edge and cloud communication. To achieve confidentiality, verifiability and access control, the secret key is generated by Key Trust Authority (KTA), end users and edge node together, and saved in cloud platform; the operations of verification are performed by the adjacent edge node; and the operations of encryption and decryption are performed by the terminal device. We verify the efficiency of our scheme in terms of the security of the encryption algorithm and the performance of the system. The analysis of the proposed scheme reveals better computational efficiency.