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Digital sampling synchronous controller-based chaotic secure communication system

A technology of synchronous controller and secure communication, applied in the direction of digital transmission system, transmission system, safety communication device, etc., to achieve the effect of facilitating communication transmission, reducing the number of electrical components, and improving communication quality and security

Active Publication Date: 2015-05-06
POWERCHINA HUADONG ENG COPORATION LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the research on chaotic synchronous communication is mainly carried out within the range of ideal channels, but if chaotic synchronous communication is to be applied to practical systems, the influence of noise interference and transmission channel distortion on chaotic synchronization must be considered.
2. The security performance and robustness of chaotic synchronous secure communication

Method used

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  • Digital sampling synchronous controller-based chaotic secure communication system
  • Digital sampling synchronous controller-based chaotic secure communication system
  • Digital sampling synchronous controller-based chaotic secure communication system

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0053] Such as Figure 4 As shown, the present embodiment is a chaotic secure communication system based on a digital sampling synchronous controller, the system consists of a chaotic driving unit 1, a sending unit 2, a channel 3, a receiving unit 4, a chaotic response synchronous control unit 5 and a decryption unit 6 composition. The sending unit 2 and the receiving unit 4 are connected by a channel 3 .

[0054] Chaotic drive unit 1 is composed of chaotic circuit Ⅰ1-1 (mainly composed of operational amplifier LM358 and analog multiplier MC1496), voltage follower Ⅰ1-2 (mainly composed of operational amplifier LM358) and switcher 1-3, among which chaotic circuit Ⅰ1 -1 generates chaotic signals X1 and Y1, one path of the chaotic signal X1 directly enters the switcher 1-3, and the other path passes through the voltage follower I1-2 to obtain the inverse signal of the chaotic signal X1 and then enters the switcher 1-3. The function of the switch is to directly output the chaoti...

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Abstract

The invention relates to a digital sampling synchronous controller-based chaotic secure communication system, aiming at providing a chaotic secure communication system which is good in security and short in encryption and decryption consuming time, reducing the system error between a transmitting end and a receiving end of the chaotic system, solving the problem of the synchronous performance of the chaotic system, and improving the communication quality and security. The chaotic secure communication system has the technical scheme that the digital sampling synchronous controller-based chaotic secure communication system is characterized in that the system comprises a chaotic driving unit and a transmitting unit arranged at a transmitting end, a receiving unit arranged at a receiving end, a chaotic response synchronous control unit and a decryption unit, wherein the transmitting unit is connected with the receiving unit by an information channel. The chaotic secure communication system is suitable for the technical field of secret communication.

Description

technical field [0001] The invention relates to a chaotic security communication system based on a digital sampling synchronous controller. It is applicable to the technical field of secure communication. Background technique [0002] Traditional cryptography is a means of confidentiality in which both sides of the communication perform a special transformation of information according to a predetermined rule (key). If the key is simple, the ciphertext is easy to decipher, and if the key is complex, the decryption will take a long time, which cannot satisfy both security and timeliness. communication requirements. [0003] Chaotic signals have the characteristics of initial value sensitivity, overall stability, non-periodic randomness, continuous broadband spectrum, and noise-like characteristics. The chaotic system is used as a key stream generator to make the transmitted signal have natural concealment. The difference between the chaotic encryption method and other encry...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/00
Inventor 高振华施云琼罗丹曾国强吴火军解翠翠
Owner POWERCHINA HUADONG ENG COPORATION LTD
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