python实现国密SM2验签操作。具体代码如下。参考文档《GB_T+32918.5-2017.pdf》。gmssl版本是3.2.1
importstructfromgmsslimportsm3,func# 1. 国标标准参数 (大数)P=0xFFFFFFFEFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF00000000FFFFFFFFFFFFFFFFA=0xFFFFFFFEFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF00000000FFFFFFFFFFFFFFFCB=0x28E9FA9E9D9F5E344D5A9E4BCF6509A7F39789F515AB8F92DDBCBD414D940E93N=0xFFFFFFFEFFFFFFFFFFFFFFFFFFFFFFFF7203DF6B21C6052B53BBF40939D54123GX=0x32C4AE2C1F1981195F9904466A39C9948FE30BBFF2660BE1715A4589334C74C7GY=0xBC3736A2F4F6779C59BDCEE36B692153D0A9877CC62A474002DF32E52139F0A0# 2. 辅助函数：椭圆曲线点加与点乘 (底层数学逻辑)definverse(a,n):"""求逆元"""returnpow(a,n-2,n)defstr_to_int(s):returnint(s,16)defec_add(P1,P2):"""椭圆曲线点加运算"""ifP1isNone:returnP2ifP2isNone:returnP1(x1,y1
