Bluetooth master and slave devices and method for establishing safety channel between same

Abstract

The invention discloses Bluetooth master and slave devices and a method for establishing a safety channel between the same, and belongs to the field of information safety. The method comprises: both the Bluetooth devices exchange respective device information; according to the device information, a connection is established between the Bluetooth devices; both the Bluetooth devices exchange and verify respective authentication keys generated according to a same algorithm; and after authentication is successful, both the Bluetooth devices generate communication encryption keys according to a same algorithm, so that the safety channel is established between the Bluetooth devices. The Bluetooth slave device comprises a data receiving module, a first data sending module, a second data sending module, a data generation module, an operation module, a judgment module, a communication encryption module and a display module; the Bluetooth master device comprises a data receiving module, a data sending module, a data generation module, an operation module, a judgment module, a communication encryption module and an input module. The connection between the Bluetooth devices by verification codes is achieved, and the malicious connection of other devices is prevented.

Description

technical field [0001] The invention relates to the field of information security, in particular to a bluetooth master-slave device and a method for establishing a safe channel between them. Background technique [0002] Bluetooth technology replaces cable connections with short-distance, low-cost wireless connections, and is widely used among many devices including mobile phones, wireless headsets, laptops, and related peripherals, and realizes wireless communication between Bluetooth devices; Bluetooth devices It is a wireless communication electronic product designed using Bluetooth technology, supports short-distance wireless communication, and has the characteristics of short delay time and strong connection stability. [0003] When a secure channel is established between Bluetooth devices, most of the current Bluetooth devices use non-authenticated connections, which increases the uncertainty of the connection, and there is a problem of malicious connections; when a Bl...

AI Technical Summary

Problems solved by technology

[0003] When a secure channel is established between Bluetooth devices, most of the current Bluetooth devices use non-authenticated connections, which increases the uncertainty of the connection, and there is a problem of malicious connections; when a Bluetooth device sends data to a device with Bluetooth function , because the communication data will not be encrypted, the communication data is vulnerable to eavesdropping, man-in-the-middle attacks, message modification and resource abuse, etc.

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