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Quantum encryption method based on chaotic sequence

A chaotic sequence, quantum encryption technology, applied in key distribution

Inactive Publication Date: 2019-06-14
SUZHOU UNIV
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  • Abstract
  • Description
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Problems solved by technology

[0005] The challenge of quantum noise encryption technology lies in the generation of multi-level electrical signals and the decoding of high-order modulation hidden signals

Method used

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  • Quantum encryption method based on chaotic sequence
  • Quantum encryption method based on chaotic sequence
  • Quantum encryption method based on chaotic sequence

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it, but the examples given are not intended to limit the present invention.

[0024] Principle of Quantum Noise Encryption Technology

[0025] The quantum noise encryption process based on pseudo-multiary system is as follows: figure 1 shown. Firstly, the plaintext binary sequence is mapped to the low-order QAM signal through the XOR operation of the key sequence with the same length as the plaintext. Secondly, the randomly generated binary sequence is used as the base to integrate the low-order signal to generate a high-order QAM signal for transmission, that is, ciphertext. After receiving the ciphertext information, the eavesdropper can only see the high-order QAM signal. Since the high-order QAM signal is sensitive to noise, the eavesdropper cannot ef...

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Abstract

The invention discloses a quantum encryption method based on a chaotic sequence. The invention discloses a quantum encryption method based on a chaotic sequence. The method comprises the following steps of: performing quantitative judgment on a chaotic sequence in a chaotic state to generate a binary sequence with enough length; the method is used as key information of a quantum noise encryption system, quantitative decision function is as follows; using the chaotic sequence to generate a chaotic signal, and the chaotic signal is used to generate a chaotic signal. The chaotic signal is used togenerate a chaotic signal; and the sender and the receiver only need to share three key parameters, namely iteration times, a logistic map coefficient and a chaotic sequence length, so that a matchedpassword sequence can be automatically generated. The beneficial effects of the method are as follows: compared with a traditional quantum encryption system, the quantum encryption system has the advantages that the cracked risk and the safe transmission difficulty of the long password sequence are considered, the long chaotic sequence generated by the chaotic function is used as the password sequence of the quantum encryption system, and therefore safe decoding of information can be achieved only by sharing key parameters of the chaotic function between legal transceivers.

Description

technical field [0001] The invention relates to the field of quantum encryption, in particular to a quantum encryption method based on a chaotic sequence. Background technique [0002] With the continuous increase of network applications, network security issues have become increasingly prominent. Compared with the encryption technology based on single-photon quantum key distribution, the physical layer encryption technology based on quantum noise is more suitable for long-distance and high-capacity optical fiber communication systems. [0003] Quantum noise encryption technology (QSC: Y-00quantum stream cipher) is to jointly modulate the low-order modulation signal and the base signal into a high-order signal, and use the characteristics of the high-order signal to be sensitive to noise to successfully hide the low-order signal in the noise. [0004] The traditional technology has the following technical problems: [0005] The challenge of quantum noise encryption technol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/08H04L9/00
Inventor 高明义沙炎平沈纲祥
Owner SUZHOU UNIV
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