Dynamic password electronic lock system in which password changes according to random codes

Abstract

The invention provides a dynamic password electronic lock system in which a password changes according to random codes. The system is composed of a lock body and a temporary password generator. A fixed password of a password lock is stored in a nonvolatile storage of the lock body, when a temporary user uses the electronic lock, the electronic lock generates the random codes R, a temporary password used for unlocking is obtained through calculation of the fixed password and the random codes according to a special algorithm (such as a one-way hash function), and automatic calculable changing is performed on the temporary password along with changes of the fixed password or differences of the random codes generates each time. Thus, the temporary password can be obtained through calculation when a password lock manager mastering the fixed password in the password lock receives the random codes, and after the system is delivered to the temporary password lock user, the temporary password lock user can perform unlocking through the temporary password in an effective period of time.

Description

technical field [0001] The invention relates to a dynamic password electronic lock system whose password changes according to a random code, in particular to a controller of this type of electronic lock. Background technique [0002] At present, there are two types of passwords for existing electronic combination locks: the first category is a fixed password that can be set, and the password is stored in a non-volatile memory. When the password stored in the non-volatile memory is checked and the lock is consistent, the value of the password in the non-volatile memory can also be modified through the password setting, and the password can be updated to enhance security. The second category is the use of electronic keys. Electronic keys can be electronic tags such as various contact or non-contact magnetic cards, IC cards, etc. The electronic tags record the password of the combination lock, which solves the distress of users needing to remember the password. The electronic ...

AI Technical Summary

Problems solved by technology

However, the above two types of coded locks are slightly inconvenient for temporary users of coded locks. Fixed coded locks require a coded lock manager to modify the code at the location of the coded lock after being used by a temporary user; Keys are physically handed over to casual users and returned after use

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