Off-site controlled magnetic card cipher lock and control method thereof

Abstract

The invention relates to a magnetic card coded lock which is controlled randomly at off-site and a control method thereof; the magnetic card coded lock comprises a lock body, a controller connected with the lock body, a code generator A connected with the lock body by the controller, a user code card and a magnetic card reader connected with the lock body by the controller; when the reader reads that the code of the user code card is consistent with the current code generated by the code generator A, the lock can be opened; wherein, the magnetic card coded lock also comprises a code generator B and a card-writing device connected with the code generator B; the code generator A is completely separated from the code generator B; wherein, the code generator A and the code generator B generate random codes which are the same completely in real time according to the completely same randomized algorithms. The device and the method of the invention can improve the safety of the code effectively and prevent the revealing of the code.

Description

technical field [0001] The invention relates to a coded lock and a control method thereof, in particular to a magnetic card coded lock for remote control and a control method thereof. Background technique [0002] Chinese patent CN1107925 discloses the method for opening the magnetic card coded lock is to connect each magnetic card coded lock with a digital keyboard and a central control machine connected to a computer, and the computer controls its random generator to generate a code, and transmits and stores the code In the memory of the central control machine, the CPU of the central control machine collects the password dialed in by the keyboard, and compares it with the password stored in the memory. Only when the password matches, the CPU sends an opening signal to the magnetic card combination lock, thereby Turn on the magnetic card combination lock. In this inventive solution, one group of passwords for unlocking must be set earlier, and the passwords cannot be chan...

AI Technical Summary

Problems solved by technology

In this invention, a group of passwords for unlocking must be set first, and the passwords cannot be changed before unlocking, so it is easy to leak secrets

CN1106888 discloses an arbitrary encoding method of a magnetic card combination lock, which overcomes the mutual independence of the magnetic card combination lock encoding and code input process. It cannot be encoded when entering the password, and cannot be input when encoding, which is easy to leak. The sequence contains the information of the current unlock password and the next unlock password, which is the new code, and the new code is obtained after the information is processed.

In this invention, each password is only used once, which improves the confidentiality, but it is also a method of setting the password first and knowing the password after unlocking, and there is still the possibility of leaking the password

In view of the above problems, the present invention proposes a magnetic card password lock and its control method controlled randomly in different places, which can better solve the problem of password leakage

Images