Many fields of study use it in conjunction with cryptography algorithms to guarantee the security of sensitive information. Considering wireless sensor networks transmit information over public channels, and that power data and sensitive information may be distorted in the transmission process, there are security risks associated with the smart grid. Wireless sensor network has been widely applied in the smart grid. The use of intelligent Internet of Things (IoT) devices brings great convenience to data communication. Experimental analysis shows that our work has greater advantages in the field of practical broadcast services. The scheme employs a symmetric encryption algorithm to improve encryption and transmission efficiency The Lagrange interpolation theorem is used to encrypt the user’s identity to ensure the privacy preservation of terminal devices And a trusted third party is used to eliminate duplicated ciphertext for identical messages using an equality test, resulting in efficient network bandwidth utilization. To solve these shortcomings, we construct a broadcast signcryption scheme supporting equality test based on certificateless cryptosystem. However, most of the existing schemes require a large amount of network bandwidth resources and cannot ensure the receiver’s anonymity. This vast amount of data is subject to various attacks during transmission, from which users must be protected. ![]() ![]() With the development of cloud computing and the application of Internet of Things (IoT) in the smart grid, a massive amount of sensitive data is produced by the terminal equipment.
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