Research on Blockchain Privacy Protection Method Based on Improved Schnorr Ring Signature

The stable operation of the power grid depends on the security and reliability of data. The characteristics of decentralization, openness, transparency, and traceability of blockchain not only improve efficiency and reduce costs but also face serious privacy leakage problems. Therefore, this paper attempts to propose an improved Schnorr signature algorithm, which improves the traditional Schnorr signature. Firstly, the principle of Schnorr signature is introduced and the flow of Schnorr signature is elaborated; secondly, the ring signature generation function Sign and the ring signature verification function Verify in Schnorr signature are improved, and the algorithm implementation of the improved Schnorr signature is given. Finally, the numerical simulation shows that the improved Schnorr signature is better than the traditional Schnorr signature in terms of signature efficiency, and further improves the level of blockchain privacy protection to achieve higher security.