SM4 加密算法，使用C#实现，只提供一个核心加密类-SMS4 Cipher C#

PPRM结构SM4算法S盒C语言实现，该结构逻辑简单，灵活性大，非常适用于流水线结构- PPRM structure S box of SM4 algorithm is realized in C language. The logic structure is simple , flexible, ideal for the pipelined structure .

国产密码SM2、SM3、SM4的C语言实现，并且附带检测程序做出相应赋值检测- The domestic password SM2, SM3, SM4 C language, and with testing procedures to make the appropriate assignment test