Robust chaos keying secure communication system, communication method, terminal and storage medium

A technology for secure communication and chaotic signals, which is applied in the fields of terminals and storage media, communication methods, and robust chaotic keying secure communication systems. Increase the chaotic carrier bandwidth, resist return mapping attack, and increase the effect of system delay line
CN112929152BActive Publication Date: 2022-05-20CHINA UNIV OF GEOSCIENCES (WUHAN) +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA UNIV OF GEOSCIENCES (WUHAN)
Publication Date
2022-05-20

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Abstract

The invention belongs to the technical field of chaos security, and discloses a robust chaos keying security communication system, a communication method, a terminal and a storage medium. At the sending end, a double delay feedback chaos keying system is designed, and a fixed delay feedback is used for To ensure the chaotic characteristics of the system, another channel of controllable delay feedback is used to carry 0 and 1 bit information, and the 0 or 1 state is used to control the closure and opening of the delay feedback; when the transmitter is in the open / close state of the delay keying modulation module, The chaotic signal output by the system and its delayed signal are used to train the neural network to establish two relationship models; at the receiving end, the two models are used to verify the mapping relationship between the modulated chaotic signal and the delayed signal segmentally. Decryption is performed under the premise of chaotic carrier at the terminal. The invention can effectively resist the return mapping attack on chaotic keying, and provides the possibility for safe transmission under severe communication conditions.
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Description

technical field

[0001] The invention belongs to the technical field of chaotic security, and in particular relates to a robust chaotic keying security communication system, a communication method, a terminal and a storage medium. Background technique

[0002] Since the optical chaotic secure communication with a communication rate of 1Gb / s was realized in the 120km metropolitan area network of Athens in 2005, the research on optical chaotic secure communication has attracted worldwide attention and has made great progress. Its transmission rate, transmission distance , security have been significantly improved, and gradually become one of the most feasible physical layer encryption methods. A large number of experiments have realized and reported long-distance (greater than 100km) high-speed optical fiber chaotic secure communications. It is worth noting that in some practical communication environments, such as wireless communication, underwater communication, and free-spa...

Claims

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