Performance Test and Analysis of National Secret Algorithm SM2 in Power Data Protection

Power data contains a wealth of privacy information. Data protection has always been an urgent problem to pay attention to. Domestic cryptographic algorithm is one of its implementation methods. Aiming at the application of SM2 algorithm in power data protection, this paper first analyzes the principle and process of asymmetric encryption and decryption algorithm SM2, extracts SM2 algorithm from gmssl cipher library and transplants it to Linux system, and then uses Visual Studio 2017 + Qt development software to classify and test SM2 algorithm according to encryption and decryption process and specification length. In a small amount of plaintext length overhead test, SM2 algorithm meets the actual operation performance index and can protect power secret data.