A Shared Key Secure Communication Method Fused with Private Information

Abstract

The invention discloses a shared key security communication method for fusing private information. According to the shared key security communication method, equipment fingerprint information and private keys of both communication parties are taken as connotative private information, the private information is protected and transmitted to opposite parties according to public channel characteristics, and reconstruction of channel reciprocity is completed at a receiving terminal in a mode that known private information is overlapped with received signals. By adopting the method disclosed by the invention, consistency in generating shared keys of the communication parties and the randomness in generating the keys can be improved, the problem of channel characteristic reciprocity under the condition that equipment fingerprint characteristics are available and the problem that the randomness in generating the keys is insufficient under the condition that the channel changes slowly can be solved, and the shared key security communication method can be applied to wireless communication systems and can be also applied to wired communication systems and optical fiber communication systems.

Description

Technical field [0001] The invention relates to a shared key secure communication method that integrates private information in the case of Time Division Duplex (TDD), and belongs to communication security technology. Background technique [0002] With the development of communication technology, high-speed communication systems have been widely used. Whether it is in the traditional wired communication field, the rapidly developing wireless communication field and the optical fiber communication field, its security has also attracted increasing attention. The traditional encryption method is based on the upper communication protocol. Both parties in communication rely on the agreed key for confidential communication. However, with the development and deepening of information countermeasures technology, the security of the key itself will become increasingly difficult to guarantee. Therefore, traditional information security technologies will be increasingly threatened in the ...

AI Technical Summary

Problems solved by technology

These methods are designed for high-speed wireless communication systems, but in secure communication based on channel characteristics, these methods of compensating channel reciprocity through precoding may reduce the characteristics of the channel, thereby reducing the randomness of generating key bits

[0005] In addition, most of the existing research on shared-key secure communication based on channel characteristics is based on wireless channels, and the research on shared-key secure communication for wired channels and optical fiber channels is still rare.

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