Dynamically encrypting and unlock method based on electronic trick lock

Abstract

The invention provides a dynamic encryption and unlocking method based on an electronic coded lock. A coded lock system thereof consists of a dynamic code generator and an electronic coded lock control system. The code generator can generate dynamic codes by adopting the multi-code table encryption algorithm and taking the time as parameters. When a user unlocks, both a customized static code and a dynamic code must be input. The coded lock control system decides whether to unlock depending on the correctness of the input codes. The dynamic code based on the parameters of time is just effective and disposable within a given time, so as to be high in security. The coded lock control system gets the clock information of the code generator through the dynamic code, and compares the clock information with the system clock of the coded lock, thus synchronizing the two clocks through the analysis and the compensation of the deviations of the clocks, and ensuring the overall system to run reliably for long.

Description

technical field [0001] The present invention relates to encoding or decoding devices required for security, and more particularly to cryptographic devices for keys or algorithms that change during operation. It belongs to a combination lock used in safes, important warehouses and bank vault doors. Background technique [0002] In places with high security requirements such as safes, important warehouses, and bank vault doors, traditional mechanical key or IC card access control systems all have a common hidden danger. Once the key or IC card is lost, the person who finds it may break the law. Open. Although there is no problem of key loss in ordinary combination locks, because the password is relatively fixed, others may steal the password through voyeurism, camera monitoring and other means, burying hidden dangers for safety. [0003] In order to overcome the deficiencies in the prior art, someone has proposed a dynamic password method. The invention patent of "Electroni...

AI Technical Summary

Problems solved by technology

The system requires the combination lock control system to be connected to the network management server all the time. In many occasions, this requirement is difficult to achieve

In addition, it is easy to be attacked by Trojan horses on the network, and there are also hidden dangers in security.

Images