Research On Heterogeneous Signcryption Scheme With Privacy-Preserving

The development and application of 5G network technology drive the rapid development of emerging fields such as big data,artificial intelligence,cloud computing and Internet of things.Cross-platform operation has become indispensable in emerging fields.However,this means that it will face more severe information security challenges,such as sensitive data leakage,password attacks,session hijacking and eavesdropping attacks.Since different platforms usually use different cryptosystems to ensure data security,a cryptosystem that supports heterogeneous communication is required when secure communication is performed between different platforms.According to the different needs of customers for network communication,there are many communication modes in actual communication,including one-to-one,one-to-many,many-to-one and many-to-many.A single message or multiple messages can be transmitted in one communication.Different communication modes and transmission methods affect communication efficiency and computational efficiency,and also face different security challenges.Heterogeneous signcryption algorithms can ensure the secure communication between the two parties,meet the differentiated needs of users in heterogeneous environments,and ensure that users’ privacy data is not leaked.However,the existing heterogeneous signcryption schemes have problems such as high computational cost,large communication overhead,and heavy broadband burden.In order to solve the above problems,this paper mainly studies the heterogeneous signcryption scheme with privacy protection.The research contents are as follows:(1)In the environment of the Internet of Vehicles,in order to ensure the safe communication between vehicles and roadside units as well as the protection of vehicle identity and privacy,and at the same time to de-duplicate and archive the data stored in the cloud server,a heterogeneous signcryption scheme supporting equality testing and privacy protection in the Internet of Vehicles is proposed.In this scheme,the roadside unit can collect a variety of road condition information from the sensor,such as traffic flow,accidents,etc.,and send the collected information to the vehicle after signcryption,and the vehicle will unsigncryption the ciphertext,and then make safety warning judgment and control decision.Therefore,the occurrence of traffic accidents is reduced.Due to limited storage space in roadside units and vehicle units,data is usually uploaded to a cloud server for storage.This scheme supports the equivalent test of ciphertext by the cloud server.The security prove and numerical simulation show that this scheme is safe and has high computational efficiency.(2)In the environment of 5G network slicing,different 5G network slicing in heterogeneous environments usually adopt different cryptographic systems to ensure security,and a mutual heterogeneous signcryption scheme with privacy protection in 5G network slicing is proposed.In the scheme,firstly,a multi-receiver heterogeneous signcryption and heterogeneous aggregation signcryption scheme are constructed to realize secure and efficient communication between 5G Internet of Things slicing and 5G Internet of vehicles slicing.Secondly,the Lagrange interpolation technique is used to realize the anonymity of identity.Finally,the security of the scheme is proved under the random oracle model.At the same time,through the numerical simulation compared with the existing scheme,the scheme has better performance and higher efficiency.(3)In the industrial Internet of Things environment,aiming at the heterogeneity of the industrial Internet of Things and the limitations of the traditional cloud architecture,an online/offline heterogeneous signcryption scheme with privacy protection based on edge computing is proposed.Firstly,an edge server in identity-based cryptosystem can communicate with multiple data users in a certificateless cryptosystem.Secondly,compared with traditional cloud computing,edge computing effectively solves network latency and saves broadband overhead.Then,the signcryption phase is divided into online phase and offline phase,which reduces the calculation overhead of online phase.Finally,it is proved that the scheme satisfies the confidentiality and unforgeability under the random oracle model.Numerical simulation results show that the scheme is effective and feasible.