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Wireless channel characteristic comprehensive information fusion method

A technology of comprehensive information and fusion method, which is applied in the field of feature extraction and fusion application of communication signals, can solve the problems of low generation rate, weak environmental adaptability, poor randomness, etc., and achieve increased generation rate, improved randomness and security, The effect of improving environmental adaptability

Active Publication Date: 2015-01-21
CHINA ACAD OF LAUNCH VEHICLE TECH
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AI Technical Summary

Benefits of technology

The present in this new method uses 3 kinds of radio channels (wireless) that have specific features for generating asymmetric keys. This allows for faster key generations by combining these techniques together while also providing better protection against attacks from man-involved adversaries or other threat agents. Additionally, it suggests using various forms of communication devices like smartphones or tablets instead of traditional methods such as passwords or biometric authentication systems. Overall, this innovative approach enhances secure encryption protocols based on multi-channel data transmission technologies.

Problems solved by technology

Technological Problems In this patented technical problem addressed in this patents include slow changes in the quality or directionality of signals caused by changing channels due to factors like rain attenuation or atmospheric turbulence that affect how well an antenna's reception occurs over different environments (temperature). These issues make it difficult to create symmetrically distributed secret keys with high reliance against interference attacks.

Method used

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Embodiment Construction

[0024] Such as figure 1 As shown, the method of the present invention mainly includes five steps, namely, feature extraction, information entropy calculation, low entropy elimination, key agreement, and interleaved fusion. Among them, feature extraction is used to obtain three types of wireless channel eigenvalues ​​of received signal strength, phase and Doppler frequency shift from the wireless communication system; information entropy calculation is used to evaluate the amount of information of the three types of wireless channel eigenvalues; low entropy elimination It is used to delete the wireless channel characteristic value below a certain threshold, and proceed to the next step if the condition is met; the key negotiation is to generate a symmetric key from the wireless channel characteristic value; Interleaved to generate the final key. Detailed descriptions are given below respectively.

[0025] Feature extraction is to obtain the values ​​of three types of wireless...

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Abstract

A wireless channel characteristic comprehensive information fusion method includes the steps of characteristic extraction, information entropy calculation, low entropy elimination, key negotiation and staggered fusion. Characteristic extraction is used for obtaining three types of wireless channel characteristic values, namely, the strength, the phase and the Doppler frequency shift of a received signal, from a wireless communication system. Information entropy calculation is used for estimating the information amounts of the three types of wireless channel characteristic values. Low entropy elimination is used for deleting the wireless channel characteristic values lower than a certain threshold value and conducting key negotiation on the wireless channel characteristic values conforming to the conditions. Key negotiation is used for generating symmetric keys through the wireless channel characteristic values. Staggered fusion is used for arraying the keys generated through the different channel characteristic values in a staggered mode and generating a final key. By means of the method, the aim of generating the symmetric keys through the various types of wireless channel characteristics together is achieved, the high key generation capacity, the high key security and the high environment adaption capacity are provided, and the development of the next generation of symmetric key technology is powerfully supported.

Description

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Claims

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Application Information

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Owner CHINA ACAD OF LAUNCH VEHICLE TECH
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