Expanded encryption and decryption signature algorithm supports multiple signature digest algorithms including SM2 elliptic curve public-private key algorithm and SM3 cryptographic hash algorithm to make the calculation based on public-private key-key system more convenient and safer;
SM2 elliptic curve public-private key algorithm
https://baike.baidu.com/item/SM2/15081831
SM3 cryptographic hash algorithm
Expanded encryption and decryption signature algorithm SM2 & SM3
原文：https://www.cnblogs.com/rgqancy/p/9229726.html