Offline password generation and verification method

The invention relates to an off-line password generation and verification method, which comprises a cloud, an intelligent terminal and a lock end, the cloud and the lock end are respectively provided with the same encryption and decryption rule, intelligent equipment sends an off-line password generation request, the cloud generates a corresponding off-line password based on the encryption and decryption rule and sends the off-line password to the intelligent terminal, and the intelligent terminal sends the off-line password to the intelligent terminal. And the lock end inputs the offline password and carries out decryption based on the encryption and decryption rule to judge whether the offline password is legal or not, so that the purpose of unlocking is achieved. By setting the encryption rule and the decryption rule, the generation and verification of the offline password are more efficient and safer. 本发明涉及一种离线密码生成和验证方法，包括云端、智能终端和锁端，云端和锁端分别设置有相同的加解密规则，智能设备发送离线密码生成请求，云端基于加解密规则生成对应的离线密码并将离线密码发送至智能终端，锁端输入离线密