CN116722951A - Interference signal coding method - Google Patents
Interference signal coding method Download PDFInfo
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- CN116722951A CN116722951A CN202310638416.5A CN202310638416A CN116722951A CN 116722951 A CN116722951 A CN 116722951A CN 202310638416 A CN202310638416 A CN 202310638416A CN 116722951 A CN116722951 A CN 116722951A
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 230000005540 biological transmission Effects 0.000 claims abstract description 9
- 238000001514 detection method Methods 0.000 claims abstract description 4
- 230000002452 interceptive effect Effects 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 abstract 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K3/00—Jamming of communication; Counter-measures
- H04K3/40—Jamming having variable characteristics
- H04K3/43—Jamming having variable characteristics characterized by the control of the jamming power, signal-to-noise ratio or geographic coverage area
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
- H04N21/2347—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving video stream encryption
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K2203/00—Jamming of communication; Countermeasures
- H04K2203/10—Jamming or countermeasure used for a particular application
- H04K2203/14—Jamming or countermeasure used for a particular application for the transfer of light or images, e.g. for video-surveillance, for television or from a computer screen
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Multimedia (AREA)
- Picture Signal Circuits (AREA)
Abstract
The invention discloses an interference signal coding method, which comprises the steps of generating a random sequence through a first hardware to add an interference signal to video information to be protected, sending the video information through a second hardware, encrypting the video information, detecting the intensity of a leaked signal through a third hardware, and adaptively adjusting the transmitting power of the interference signal according to a detection value. In the implementation process of the invention, a more real random sequence can be generated, so that the transmitted interference signal can more comprehensively protect the original video information, the leakage of the original video information is avoided, the transmitting power can be regulated, and the safety coefficient is increased; the random sequence which is closer to the white noise signal can be generated according to the parameter information of the computer so as to generate a more effective interference signal; the video transmission mode can be increased.
Description
Technical Field
The invention belongs to the technical field of information security, and particularly relates to an interference signal coding method.
Background
When the computer works, electromagnetic signals can be leaked through a keyboard, a display, an electric connection interface and the like, and the leaked electromagnetic signals can be grabbed through professional receiving and restoring equipment, so that original video information in the computer can be restored.
In order to protect important materials, an interference device is generally used to generate an interference signal in the prior art, so that the difficulty of restoring original video information is increased. The jammer generally performs the interference by generating a white noise signal, but the white noise signal generated by the jammer is not a real white noise signal, and has a certain regularity, and a professional person can still restore the original video information through a specific professional device.
Disclosure of Invention
Accordingly, the present invention is directed to an interfering signal encoding method, which solves the above-mentioned problems in the prior art.
In order to achieve the above object, the present invention provides the following technical solutions:
according to a first aspect of the present invention, a method for encoding an interference signal includes:
generating a random sequence by means of first hardware to add an interference signal to the video information to be protected,
the video information is transmitted through the second hardware, and encrypted at the video information,
and detecting the intensity of the leaked signal by the third hardware, and adaptively adjusting the transmitting power of the interference signal according to the detection value.
Further, the first hardware generates a random sequence by grabbing a synchronization signal within the computer system,
the first hardware generates a random sequence in real time by capturing frame number information of the video itself and resolution information,
after generating the random sequence, the first hardware can output the generated random sequence signal.
Further, the second hardware comprises an encryption module and a decryption module,
the encryption module is arranged on the display card, the decryption module is arranged on the display, and video information can be transmitted to the display by the display card in a wired transmission mode.
Further, the second hardware includes the steps of,
the method comprises the steps of firstly, shunting video information to be protected so as to capture image information and audio information in the video information;
capturing equipment time information, and respectively corresponding the time information with image information and audio information;
thirdly, setting an image information period parameter and an audio information period parameter;
fourth, the image information and the audio information are segmented according to the period parameters, so that the image information and the audio information in the period parameters are obtained, and corresponding time frame image information and time frame audio information are generated and output according to the period parameters;
fifthly, inputting interference factors, rearranging the time frame image information and the time frame audio information, and outputting rearranged video information;
and sixthly, replacing the video information to be protected with the rearranged video information.
The invention has the following advantages:
1) According to the invention, by setting a plurality of interference modes, a more real random sequence can be generated, so that the transmitted interference signal can more comprehensively protect the original video information, the leakage of the original video information is avoided, meanwhile, the power can be reduced, and the safety coefficient is increased;
2) By arranging the first hardware, a random sequence which is closer to the white noise signal can be generated according to the parameter information of the computer so as to generate a more effective interference signal;
3) The second hardware is arranged, so that the video transmission mode can be increased, and meanwhile, when video signals are transmitted, the video signals can be compared with video transmission data in a computer, so that the video data transmission in the computer can be restored and compared conveniently;
4) By arranging the third hardware, the intensity of the leakage signal can be detected in real time, and the transmitting power of the original video signal can be adjusted according to the intensity of the leakage signal, so that information leakage can be prevented.
Drawings
FIG. 1 is a flow chart of the present invention.
Detailed Description
Other advantages and advantages of the present invention will become apparent to those skilled in the art from the following detailed description, which, by way of illustration, is to be read in connection with certain specific embodiments, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
The invention discloses an interference signal coding method, which comprises the following steps:
the random sequence is generated through the first hardware to add the interference signal to the video information to be protected, the random sequence which is more close to the white noise signal can be generated according to the parameter information of the computer, so as to generate the more effective interference signal,
the video information is sent through the second hardware and encrypted, so that the video information can be compared with video transmission data in the computer, the restoration and comparison of the video data transmission in the computer are facilitated,
and detecting the signal strength of the leakage through third hardware, and adaptively adjusting the transmitting power of the interference signal according to the detection value so as to prevent the leakage of information.
The first hardware generates a random sequence by grabbing a synchronization signal within the computer system,
the first hardware generates a random sequence in real time by capturing frame number information of the video itself and resolution information,
after generating the random sequence, the first hardware can output the generated random sequence signal.
The second hardware includes an encryption module and a decryption module,
the encryption module is arranged on the display card, the decryption module is arranged on the display, and video information can be transmitted to the display by the display card in a wired transmission mode.
The second hardware comprises the steps of,
the method comprises the steps of firstly, shunting video information to be protected so as to capture image information and audio information in the video information;
capturing equipment time information, and respectively corresponding the time information with image information and audio information;
thirdly, setting an image information period parameter and an audio information period parameter;
fourth, the image information and the audio information are segmented according to the period parameters, so that the image information and the audio information in the period parameters are obtained, and corresponding time frame image information and time frame audio information are generated and output according to the period parameters;
fifthly, inputting interference factors, rearranging the time frame image information and the time frame audio information, and outputting rearranged video information;
and sixthly, replacing the video information to be protected with the rearranged video information.
Claims (4)
1. An interference signal encoding method is characterized in that: comprising the following steps:
generating a random sequence by means of first hardware to add an interference signal to the video information to be protected,
the video information is transmitted through the second hardware, and encrypted at the video information,
and detecting the intensity of the leaked signal by the third hardware, and adaptively adjusting the transmitting power of the interference signal according to the detection value.
2. The method for encoding an interfering signal of claim 1, wherein: the first hardware generates a random sequence by grabbing a synchronization signal within the computer system,
the first hardware generates a random sequence in real time by capturing frame number information and resolution information of the video itself, and after the random sequence is generated, the first hardware can output a generated random sequence signal.
3. The method for encoding an interfering signal of claim 2, wherein: the second hardware includes an encryption module and a decryption module,
the encryption module is arranged on the display card, the decryption module is arranged on the display, and video information can be transmitted to the display by the display card in a wired transmission mode.
4. A method of encoding an interfering signal as claimed in claim 3, wherein: the second hardware comprises the steps of,
the method comprises the steps of firstly, shunting video information to be protected so as to capture image information and audio information in the video information;
capturing equipment time information, and respectively corresponding the time information with image information and audio information;
thirdly, setting an image information period parameter and an audio information period parameter;
fourth, the image information and the audio information are segmented according to the period parameters, so that the image information and the audio information in the period parameters are obtained, and corresponding time frame image information and time frame audio information are generated and output according to the period parameters;
fifthly, inputting interference factors, rearranging the time frame image information and the time frame audio information, and outputting rearranged video information;
and sixthly, replacing the video information to be protected with the rearranged video information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310638416.5A CN116722951A (en) | 2023-05-31 | 2023-05-31 | Interference signal coding method |
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| CN202310638416.5A CN116722951A (en) | 2023-05-31 | 2023-05-31 | Interference signal coding method |
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Citations (9)
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| CN103888704A (en) * | 2014-03-11 | 2014-06-25 | 中国科学院信息工程研究所 | Interference signal coding method and device |
| CN103916617A (en) * | 2014-03-11 | 2014-07-09 | 中国科学院信息工程研究所 | Interference signal generation method and device |
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| CN111083424A (en) * | 2019-11-25 | 2020-04-28 | 视联动力信息技术股份有限公司 | Audio and video encryption transmission method and device, electronic equipment and storage medium |
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-
2023
- 2023-05-31 CN CN202310638416.5A patent/CN116722951A/en active Pending
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