Dynamic double-key algorithm

Abstract

The invention discloses a dynamic double-key algorithm. The algorithm comprises the following steps: step A, establishing a dynamic encryption algorithm based on a clock principle and an encryption element seed array; step B, performing initialization of a system network; step C, performing a confidentiality and synchronization process of a dynamic key, key extraction and generation, and encryption and decryption of streaming media data; and step D, receiving a dynamic password input by a user by a client, generating identifier information and a first dynamic password of a device, and encrypting the first dynamic password by adopting a one-way hash algorithm. According to the dynamic double-key algorithm provided by the invention, the dynamic encryption algorithm based on the clock principle is adopted, so that the keys of each time are different; meanwhile, a set of dynamic algorithm auxiliary keys are generated every time, and the auxiliary keys and keys are processed by encryption to further generate a string of keys with 18-bit numbers, and two dynamic keys are sent to the client to be opened; and since the keys can only be used once, after the keys are intercepted by a hacker,the keys are written into equipment, and the equipment has no reaction, so that the use safety of a Bluetooth lock circuit is effectively guaranteed.

Description

technical field [0001] The invention relates to the technical field of information security, in particular to a dynamic double-key algorithm. Background technique [0002] Bluetooth is a wireless technology standard that can realize short-distance data exchange between fixed equipment, mobile equipment and building personal area network (using UHF radio waves in the ISM band of 2.4-2.485GHz), Bluetooth can connect multiple devices, overcome problem of data synchronization. [0003] Bluetooth is a packet-based protocol with a master-slave architecture. A master device can communicate with up to seven slave devices in the same piconet. Devices can switch roles through protocols, and slave devices can also be converted to master devices. All devices The clock of the master device is shared, and the packet switching is based on the basic clock defined by the master device that runs at intervals of 312.5µs. Two clock cycles constitute a 625µs slot, and two time slots constitute ...

AI Technical Summary

Problems solved by technology

[0005] The principle of the Bluetooth lock circuit is: there is a key in the circuit, and the key exists in the form of 4-digit hexadecimal data. When unlocking, an APP or a device with Bluetooth first queries the Bluetooth lock circuit, and then connects. In order to obtain services and characteristics, and finally establish a data communication channel with the Bluetooth circuit, since the operations of the above principles are all open, there is no arbitrary encryption process. When hackers understand the communication protocol, especially intercept the key, they can pass The above process easily opens this circuit for passage, therefore, a key that is inaccessible to hackers and constantly changing is required

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