An Improved Efficient Certificateless Hybrid Signcryption Scheme for Internet of Things

Abstract

The Internet of Things (IoT) is a vast perceptual network formed by a variety of IoT devices connected to each other. In IoT, various devices cooperate with each other to collect and transmit private data of IoT and sustain the efficient and orderly operation of IoT. However, in the complex security situation of IoT, due to the resources of IoT devices being limited, it is difficult for IoT devices to afford the heavy resource consumption of sophisticated data encryption and decryption mechanism, which brings certain security risk to data transmission of IoT. To ensure safe and efficient data transmission, we propose an improved efficient certificateless hybrid signcryption scheme for IoT, which satisfies confidentiality, unforgeability, forward security, public verification, and known session-specific temporary information security; meanwhile, we prove them in random oracle model (ROM). In addition, through simulation experiment, we find that our scheme has higher communication efficiency and computational efficiency compared with existing schemes.