Research On Efficient Heterogeneous Signcryption Scheme For Environment Of Industrial Internet Of Things

Industrial Internet of Things,as an emerging fully connected manufacturing service system,can be connected with everything in different fields.Due to the high availability of Industrial Internet,while bringing convenience to people’s lives,it is still faced with network attacks,including information leakage and other data securit y transmission problems.Signcrytion as a technology commonly used in the field of cryptography.The signature and encryption processes can be completed in one logical step at the same time,which gets rid of the high computing cost caused by the traditional method of first signature and then encryption.Therefore,the thesis proposes an efficient heterogeneous signcrytion scheme for Industrial Internet by studying identify-based cryptography system,certificateless cryptography system,heterogeneous signcrytion and edge computing,etc.The following researches are carried out in the thesis:Firstly,an efficient heterogeneous scheme with multiple messages and multiple receivers is proposed.The scheme uses multi-message and multi-receiver signcrytion technology to realize that the signcrytion of a message by one signer can be unsigned by multiple receivers,which reduces the problem of larg e resource consumption at the receiver end.In addition,scalar multiplication on elliptic c urve is used to replace bilinear pair operation in heterogeneous cryptosystems,which reduces the computing cost in the process of signcrypting and ensures the high e fficiency of data transmission in Industrial Internet.After correctness analysis,safety proof and comparative analysis of each scheme,it can be seen that the scheme has higher performance.Secondly,an efficient heterogeneous sign crytion scheme based on edge computing is proposed.This scheme uses the edge computing technology and combines the online/offline mechanism to transfer p art of the calculation performed by the edge server to the offline stage,which solves the problems of high delay and limited bandwidth faced by the terminal equipment w hen collecting massive data,alleviates the pressure of the online equipment and reduces the computing overhead in the online stage.It provides guarantee for the safe transmission of Industrial Internet data,and realizes the multi-message and multi-receiver communication between edge server and data user.The edge server belongs to identity-based encryption,and the data user belongs to certificateless encryption.This heterogeneous mechanism does not have the certific ate management and storage overhead of the public key infrastructure,and transfers the par t of the receiver’s decryption authentication to the gateway,improving the efficiency of the receiver device,so it is more suitable for the Industrial Internet scenario.The simulation results show that the heterogeneous signycryption scheme based on multi-message and multi-receiver can reduce the computation and communication overhead and improve the efficiency of data transmission.In addition,the heterogeneous signcryption scheme based on edge computing better solves the problems of high delay and limited bandwidth of data transmission in traditional cloud computing architecture,realizes multi-message and multi-receiver communication with data users,improves the efficiency of receiving devices,and enhances the reliability of transmission.