SM2算法用于国产密码加解密，并可以用于签名验签等功能，通常用于数据加密。(SM2 algorithm is used in domestic cipher encryption and decryption, and can be used for signature verification and other functions, usually used for data encryption.)

SM2算法，依赖于crypto库，经过本人验证有效(SM2 algorithm based on crypto)

SM2&SM3&SM4国密算法C语言实现,分别有3个算法的pdf文档，以及测试代码(SM encryption algorithm,including test code & docs)