The Anonymous Secure Transmission Mechanism of Power Information Based on Network Coding and Homomorphic Encryption

The business control center of the power grid adjusts grid load and power supply with a large amount of user power data. However, the malicious attacker illegally monitors and steals the user's power information transmitted by the network, which poses a great threat to the privacy of the user. Aiming at the above problems, this paper proposes an anonymous security transmission mechanism of power information based on network coding and homomorphic encryption technology. Firstly, the data collector divides and encodes the meter information, and encrypts the coding coefficients with the homomorphic encryption function, which ensures the security of transmission information. the forwarding network adopts multipath coding transmission and homomorphic encryption technology, which improves the anonymity, security and ability of anti-collusion attacks of meter information transmission. The analysis results show that only the control center at the receiving end can recover the original communication information by decoding the encoded information, and the transmission mechanism has strong anonymity and security, and has low computational complexity.