说明：  国家商用密码管理办公室 国密算法规范 其中包括 SM2 SM3和SM4 文档详细说明了上述各算法的数学原理 和测试用例
(The National Commercial Cryptography management office, national encryption algorithm specification, which includes SM2, SM3 and SM4 documents, details the mathematical principles and test cases of the above algorithms)