M1 card multi-security encryption method and system

The invention discloses a multi-security encryption method and system for an M1 card. According to the method, the M1 card is verified through multiple encryption modes such as UID number matching, sector password verification, encryption and decryption KEY obtaining, encryption data decryption and verification data verification, key data such as random data and encryption data are updated each time, multiple encryption is carried out, the cracking difficulty is increased, the safety is improved, the sector password does not need to be updated, and the encryption efficiency is improved. The binding requirement of the M1 card and the lock is reduced, the M1 card can be bound with a plurality of locks, the use is more convenient, and the problems of reducing the binding requirement of the M1 card and the lock and safely encrypting the M1 card can be solved. 本发明揭示了一种M1卡多重安全加密方法及其系统；本方法通过UID号匹配、扇区密码验证、加解密KEY获取、加密数据解密和验证数据的验证等多种加密方式对M1卡进行验证，且随机数据和加密数据这些关键数据每次更新，多重加密，增加破解难度，提高安全性，而扇区密码不需要更新，M1卡与锁的绑定要求降低，M1卡可以与多把锁绑定