A Partial Outsourcing Decryption of Attribute-Based Encryption for Internet of Things

Internet of things (IoT) is a fast-growing technology in the modern digital era that attracts people from industries as well as academic fields. IoT provides the platform to connect all the devices to share data over the Internet. This emerging technology suffers from many security issues due to the heterogeneity of the environment and resource-constrained IoT devices. Attribute-based encryption (ABE) is a modern encryption scheme that provides security along with an access control mechanism. This technique is applied for secure communication among IoT devices over unsecured communication channels. The bilinear pairing operation is generally used for encryption and established sharing between parties. In this paper, outsourcing-based decryption of ABE using a three-party Diffie-Hellman key exchange protocol is proposed for the IoT environment where devices have limited computational and battery power. The main aim of the proposed scheme is to lessen the complexity of computation for the decryption operation of ABE for the resource-constrained devices of IoT.