基于聚合签密和区块链的混合终端群认证算法OA

Distributed photovoltaic,wind power and other new energy services in a new type of power system have a large number of access on the load side,making the security and optimal allocation of resources in the power Internet of Things have received widespread attention.A hybrid terminal group authentication algorithm based on aggregate signcryption and blockchain is proposed to solve the problems of traditional centralized authentication mode,such as high pressure of data processing,low efficiency and high risk of data storage.Considering the hybrid terminal architecture with and without PUF,the steps of system initialization registration are given,and differentiated key management is realized.Next,a distributed authentication algorithm based on regional grouping is designed.Each grouping calculates the credit value according to the device information on the blockchain to identify the aggregator and verify it through the aggregator authentication.Then,the group authentication process is completed by using the aggregation signcryption technology.Finally,the calculation and communication cost of the algorithm are compared and analyzed,and the security of the algorithm is verified by Scyther security software.The results show that the proposed algorithm can reduce the computation and communication overhead while ensuring the security performance.