证书认证，从pem读取私钥，对xml文件解析，解密密文，得到解码所需密钥-Certificate from pem to read the private key, on the xml file parsing, decrypting the ciphertext to obtain the key needed for decoding

农药电子查询服务系统的破解，含源码：解释注册文件p3.xml，导出已注册机主系统盘的逻辑序列号，再改写本地机器的系统盘的逻辑序列号。--Crack of the pesticide electronic inquiry service system, including source code: p3.xml explain the registration documents and export the the RI main system disk logical serial numbe