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Method and device for securing and blocking power line information

A power line and anti-leakage technology, which is applied in the direction of safety communication devices, distribution line transmission systems, electrical components, etc., can solve the problems of blank safety protection measures, lack of safety awareness, leakage of useful information, etc., and achieve strong anti-reduction, High reliability and the effect of preventing conduction leakage

Active Publication Date: 2014-06-18
成都立鑫新技术科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Third, computer information radiates through power lines, leaking useful information
Through the above experiments, it can be seen that the power line is very likely to be used as a channel for stealing and leaking secrets, and the seriousness of the national security threat to our country cannot be underestimated. measures are almost blank

Method used

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  • Method and device for securing and blocking power line information

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A power line information leakage prevention blocking method, comprising the following steps:

[0037] a. Receive communication information and radiation conduction information on the power line, and extract relevant characteristic signals from communication information and radiation conduction information;

[0038] b. Process the extracted relevant feature signal into a garbled signal, and then modulate the garbled signal into a broadband signal;

[0039] c. Transmit the broadband signal to the AC end of the power line, superimpose the broadband signal and the conduction signal on the power line, disrupt the communication signal or electromagnetic radiation conduction signal, and make it impossible for the receiver to demodulate the signal carried by the signal true information.

[0040] A preferred embodiment of the present invention is that in the step a, the receiving electromagnetic coupler receives the communication information and radiation conduction information...

Embodiment 2

[0048] An anti-disclosure blocking device for power line information, including a programmable gate array FPGA and a microprocessor DSP, the programmable gate array FPGA processes the received communication information and radiation conduction information on the power line and sends it to the microprocessor DSP, and the microprocessor DSP The processor DSP extracts the relevant characteristic signals of the received information and transmits them to the programmable gate array FPGA. The programmable gate array FPGA processes the extracted relevant characteristic signals into garbled signals, and then modulates the garbled signals into broadband signals and transmits them to the power line. AC side.

[0049] Another preferred embodiment of the present invention is that the programmable gate array FPGA includes a digital filter processor, a random sequence code generator, a characteristic signal out-of-order encryptor and a wideband modulator, and the digital filter processor con...

Embodiment 3

[0055] The present invention is further described below:

[0056] The invention mainly aims at blocking the narrow-band communication and wide-band communication used in the current low-voltage power carrier communication, and at the same time isolates and processes the radiation conduction signal characteristics of computers, printers, copiers, fax machines, and imported complete sets of equipment.

[0057]The invention applies DDS technology, adopts FPGA+DSP large-scale integrated circuit, receives communication information and radiation conduction information on the power line, performs high-speed data processing, and then generates a random sequence signal with strong reduction resistance, and performs correlation processing with the received signal. It is modulated into a broadband signal, and then through sine wave, square wave, sawtooth wave, triangle wave, and the harmonics generated by the above waveforms, the signal is synthesized and amplified to generate a broadband...

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PUM

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Abstract

The invention discloses a method and a device for securing and blocking the power line information, the method comprises the following steps of: receiving the communication information as well as radiation and conduction information on a power line, and extracting the relevant characteristic signal of the communication information as well as radiation and conduction information; processing the extracted relevant characteristic signal into a messy code signal, and modulating the messy code signal into a wideband signal; and sending the wideband signal to an alternating current end of the power line, superposing the wideband signal and the conduction signal on the power line, disturbing the communication signal or the electromagnetic radiation and conduction signal, so the real information which is carried by the signal cannot be modulated from the signal which is received by a receiver. The method can prevent information equipment from letting out secret through supply communication and electromagnetic radiation and conduction, so the communication is blocked, and the useful information of electromagnetic radiation is prevented from being received.

Description

technical field [0001] The present invention relates to an information protection device, in particular to a low-voltage power line (220V) information leak-proof blocking method and device thereof, which are used to carry out technical stealing and leaking of secrets by using power line carrier communication as a concealed communication channel and through electromagnetic radiation Effective protection is carried out by the behavior of power line conduction leakage. Background technique [0002] The power line is the most common physical medium with the widest coverage today, and the power network formed by it is a nearly natural physical network. Utilizing the resource potential of the power grid, under the premise of not affecting the transmission of electric energy, the power transmission network and the communication network are combined into one, making it another communication network after telecommunications, telephone, wireless communication, and satellite communicat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B3/54H04L9/22
Inventor 景小兵李声扬胡珂杜少华
Owner 成都立鑫新技术科技有限公司
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