An Efficient Identity-Based Aggregate Signcryption Scheme With Blockchain for IoT-Enabled Maritime Transportation System

Maritime transportation has ushered in a period of vigorous development and has been the most critical mode of transport in international trade. Maritime communication is also becoming increasingly complex. This trend needs the IoT-enabled Maritime Transportation System (IMTS) to enhance its ability of privacy-preserving, performance continuously, and add the function of joint management. Although many aggregate signcryption (ASC) schemes have been presented to satisfy this requirement, they still suffer from performance deficiencies or security weaknesses. To address these issues, we design a more practical "Perception-Network-Application" IoT-enabled MTS (PNA-IMTS) network structure. Then, we propose an efficient Identity-based aggregate signcryption scheme with blockchain (B-ID-ASC) for PNA-IMTS based on this network model. The security analysis shows that the B-ID-ASC scheme is capable of providing confidentiality and unforgeability. It also can resist existing known attacks (impersonation attack, modification attack, man-in-the-middle attack). The performance analysis indicates that our B-ID-ASC scheme, having lower computation and communication costs than current ASC schemes, is more applicable for PNA-IMTS.