An efficient group signcryption scheme supporting batch verification for securing transmitted data in the Internet of Things

Abstract

This paper presents a novel secure and privacy-preserving scheme for enhancing the security of transmitted data in an Internet of Things (IoT) environment. The proposed scheme combines a short group signature scheme with a signcryption method to represent an efficient short group signcryption (SGSC) technique with added security features. The proposed scheme supports aggregation and batch verification to eliminate the issue of increasing the computation delay from which the current IoT system suffers, particularly when the number of connected devices are increased. Detailed security analysis has shown that the proposed SGSC scheme is robust against many security and privacy threats in the IoT communication network, and can achieve more security features compared with currently available group signature schemes. The proposed scheme shows high efficiency in terms of computational cost in verifying a large number of messages within a short time frame.