Unlocking method and system based on dynamic password lock

Abstract

The invention discloses an unlocking method and a system based on a dynamic cipher lock. The method comprises steps: S1, a cipher server generates a first dynamic cipher from lock information currently received from a device according to an encryption key through an encryption algorithm, and the first dynamic cipher is sent to the device; S3, the dynamic cipher lock calculates a first verification cipher from the lock information according to a verification key through a verification algorithm, the first verification cipher is compared and verified with the first dynamic cipher, and if passing the verification, verification passing information is generated and sent to the device; S5, the cipher server generates a second dynamic cipher from the lock information currently received from the device and the verification passing information according to the encryption key through the encryption algorithm and the second dynamic cipher is sent to the device; and S7, the dynamic cipher lock calculates a second verification cipher from the lock information and the verification passing information received from the device according to the verification key through a verification algorithm, the second verification cipher is compared and verified with the second dynamic cipher, and the dynamic cipher lock is opened if passing the verification. The scheme of the invention can improved device safety.

Description

technical field [0001] The invention relates to the control field of an access control system, in particular to an unlocking method and system based on a dynamic password lock. Background technique [0002] At present, vaults, gun stores, automatic teller machines, safes, safes, confidential file cabinets, etc. are all equipment with very high security requirements, and are key security parts. Especially in the automatic teller machines commonly used in the banking and financial industry, a large amount of cash is stored, and its access control system is particularly important. Before the staff perform banknote clearing or other operations on the automatic teller machine, they need to contact the access control system of the automatic teller machine equipment before they can perform banknote clearing or other operations. With the deepening of social electronic intelligence, access control systems can be divided into password access control systems, card swiping access contr...

AI Technical Summary

Problems solved by technology

However, the passwords of the current contact cards and contactless cards are all static passwords. After the legal user's card is lost or stolen, the static password and other important information of the card are easy to be copied, causing serious losses and consequences.

[0006] There is also an access control system based on dynamic password locks in the prior art. For example, the operator directly obtains the dynamic password to ATMVH (Automatic TellerMachine View Head, head office monitoring and management system) through ATMC (Automatic Teller Machine Control, terminal equipment control system), and It is displayed on the ATM display screen, and then the operator obtains the real password according to the password offset value memorized in advance. Although this method can realize the password dynamics, the essence still relies on the operator's memory, so this kind of method still exists The offset value is forgotten by the operator or is subject to defects such as leakage

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