商密2（SM2）获取公私钥对、加解密文件

exe文件下载
链接: https://pan.baidu.com/s/1OAPvcv26NoVpmmXM7kq_xQ?pwd=c46d 提取码: c46d

以下为源代码：

获取SM2公私钥对

import os
import time
from gmssl import sm2def generate_key_pair():# 生成32字节(256位)的私钥pri_key = os.urandom(32).hex()# 使用gmssl生成公钥sm2_crypt = sm2.CryptSM2(private_key=pri_key, public_key='')pub_key = sm2_crypt._kg(int(pri_key, 16), sm2.default_ecc_table['g'])return pri_key, pub_keyif __name__ == '__main__':pri_key, pub_key =generate_key_pair()with open('key_pair_' + str(time.time()) + '.txt', 'w') as f:f.write('公钥：' + pub_key + '\n私钥：' + pri_key)

SM2加密文件

from gmssl import sm2def encrypt_file(file_path, pub_key):# 读取文件内容with open(file_path, 'rb') as f:data = f.read()# 初始化SM2加密对象sm2_crypt = sm2.CryptSM2(public_key=pub_key, private_key='', mode=1, asn1=True)# 加密数据print('开始加密：', file_path)encrypted_data = sm2_crypt.encrypt(data)# 将加密结果写入新文件encrypted_file_path = file_path + '.encrypted'with open(encrypted_file_path, 'wb') as f:f.write(encrypted_data)return encrypted_file_pathif __name__ == '__main__':file_path = input('请输入需要加密的文件：')pub_key = input('请输入SM2公钥：')# 加密文件encrypted_file = encrypt_file(file_path, pub_key)print('加密后的文件:', encrypted_file)

SM2解密文件

from gmssl import sm2def decrypt_file(encrypted_file_path, pri_key):# 读取加密文件内容with open(encrypted_file_path, 'rb') as f:encrypted_data = f.read()# 初始化SM2解密对象sm2_crypt = sm2.CryptSM2(private_key=pri_key, public_key='', mode=1, asn1=True)# 解密数据print('开始解密：', file_path)decrypted_data = sm2_crypt.decrypt(encrypted_data)# 将解密结果写入新文件decrypted_file_path = encrypted_file_path.replace('.encrypted', '.decrypted.' + encrypted_file_path.split('.')[-2])with open(decrypted_file_path, 'wb') as f:f.write(decrypted_data)return decrypted_file_pathif __name__ == "__main__":file_path = input('请输入需要解密的文件：')pri_key = input('请输入与SM2公钥对应的私钥：')# 解密文件decrypted_file = decrypt_file(file_path, pri_key)print("解密后的文件:", decrypted_file)