CN114006732A - One-way transmission system and method for image transmission physical isolation data - Google Patents
One-way transmission system and method for image transmission physical isolation data Download PDFInfo
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- CN114006732A CN114006732A CN202111170777.9A CN202111170777A CN114006732A CN 114006732 A CN114006732 A CN 114006732A CN 202111170777 A CN202111170777 A CN 202111170777A CN 114006732 A CN114006732 A CN 114006732A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/02—Network architectures or network communication protocols for network security for separating internal from external traffic, e.g. firewalls
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- H—ELECTRICITY
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Abstract
The invention provides a unidirectional transmission system and a unidirectional transmission method for image transmission physical isolation data, which comprises the following steps: a sending end, a receiving end and a controlled isolation device; the sending end is provided with an LED screen module; the sending terminal is used for receiving data sent by the first network equipment, carrying out imaging coding to obtain an image, and the LED screen module displays the image; the LED screen module displays brightness and darkness through an LED binary system to form an image; the receiving end is used for acquiring the image, decoding the image to obtain decoded data and sending the decoded data to the second network equipment; the controlled isolation device is arranged on a transmission path between the sending end and the receiving end; the controlled isolating device is provided with a diaphragm which can be opened and closed; the sending end controls the opening and closing of the diaphragm; and closing of the diaphragm is controlled by a human control or a sending end. The invention realizes the unidirectional safe transmission of data from the first network equipment to the second network equipment, ensures the safety of intranet information in high-safety industry, defines a clear safety boundary, is convenient to manage and has stronger controllability.
Description
Technical Field
The invention relates to the technical field of information transmission, in particular to a system and a method for unidirectional transmission of image transmission physical isolation data.
Background
The rapid development of information communication technology and internet technology changes our life and working modes, improves our working efficiency, but brings many security problems, such as network information leakage, viruses and the like, which seriously threaten the information security of each enterprise and public institution. The traditional information security protection technology only detects and controls data transmission at a software layer and cannot meet the requirement of physical isolation between a secret-related network and an external insecure network.
The physical isolation means that the internal network cannot be directly or indirectly connected with the public network to avoid the attack of hackers from the external network on the internal network information, so that a clear security boundary is defined for the internal network, the management is convenient, the controllability is stronger, and the communication mode of the unidirectional transmission of the data communication between the two physically isolated networks is more reliable and safer.
In actual work, data output between network information systems is in need, and the unidirectional optical gate has the following risks in the scene: the optical gate sending end must actively send a bottom layer synchronous frame and an upper layer heartbeat packet to become a carrier for constructing a time-type covert channel for coding and transmitting sensitive information; the risk of information leakage caused by passive escape cannot trust that all the data packets which are transmitted in a concealed mode can be logically identified and filtered based on a safety strategy in the inner end of the optical gate, and the data packets which are caused by passive escape can be highly sensitive information; the risk of the safety bypass of the structural defect is that the inner terminal of the one-way optical gate can reach the intranet, and an attacker can possibly destroy the safety strategy of the inner terminal to cause the safety protection mechanism to be bypassed.
Disclosure of Invention
The embodiment of the invention provides a system and a method for unidirectional transmission of image transmission physical isolation data, which realize unidirectional safe transmission of data from a first network device to a second network device only, ensure the safety of intranet information in high-safety industry, define a clear safety boundary, facilitate management and have stronger controllability.
In a first aspect of this embodiment, a system for unidirectional transmission of image transmission physical isolation data is provided, including: a sending end, a receiving end and a controlled isolation device; wherein the content of the first and second substances,
the sending end is provided with an LED screen module; the sending terminal is used for receiving data sent by the first network equipment, carrying out imaging coding to obtain an image, and the LED screen module displays the image; the LED screen module represents binary data through the on and off of the LED lamps to form the image;
the receiving end is used for acquiring the image, decoding the image to obtain decoded data and sending the decoded data to the second network equipment;
the controlled isolation device is arranged on a transmission path between the sending end and the receiving end; the controlled isolating device is provided with a diaphragm which can be opened and closed; the sending end controls the opening and closing of the diaphragm.
Further, the sending end is also provided with a sender and coding equipment; wherein the content of the first and second substances,
the transmitter is used for receiving data, transmitting the data to the coding equipment and simultaneously transmitting an opening instruction or a closing instruction to control the opening or closing of the diaphragm;
the coding device is used for receiving data to perform imaging coding to form an image.
Further, the receiving end is provided with a camera device, a decoding device and a receiver; wherein the content of the first and second substances,
the camera equipment is used for acquiring images;
the decoding device is used for decoding the image to obtain decoded data;
the receiver is used for sending the decoded data to the second network device.
Further, the controlled isolation device is also provided with a diaphragm controller, a diaphragm control switch and a mechanical electronic lock; wherein the content of the first and second substances,
the diaphragm controller is used for controlling the opening and closing of the diaphragm;
the diaphragm control switch is used for receiving an opening instruction or a closing instruction to control the diaphragm controller to open and close the diaphragm;
the opening and closing of the mechanical electronic lock controls the starting and the ending of the one-way transmission system; the opening and closing of the mechanical electronic lock are controlled manually.
Further, when data is transmitted, the diaphragm is opened: the transmitter sends an opening instruction to the diaphragm control switch, and when the mechanical electronic lock is opened, the diaphragm is opened; when the transmitter sends an opening instruction to the diaphragm control switch but the mechanical electronic lock is closed, the diaphragm cannot be opened.
Further, when the data transmission is finished, the diaphragm is closed: and when the transmitter sends a closing instruction to the diaphragm control switch or the mechanical electronic lock is closed, the diaphragm is closed.
In a second aspect of this embodiment, a method for unidirectional transmission of image transmission physical isolation data is provided, where the unidirectional transmission system includes:
the method comprises the steps that a sending end receives data sent by first network equipment, after the data are received, an opening instruction is sent to a diaphragm controller to control opening of a diaphragm, and the sending end starts data transmission;
the sending end carries out imaging coding on the data to form an image and displays the image;
the receiving end acquires the image, decodes the image to obtain decoded data and then sends the decoded data to the second network equipment;
after the image transmission of the sending end is finished, when the receiving end obtains the image, the sending end sends a closing instruction to the diaphragm controller to control the closing of the diaphragm, and a transmission channel between the sending end and the receiving end is cut off.
Further, before data transmission, the mechanical electronic lock is manually controlled to be unlocked, and the one-way transmission system is started; and after the data transmission is finished, manually controlling the mechanical electronic lock to be closed, and finishing the one-way transmission system.
Further, the first network device sends a data transmission application to the sending end, and sends the data to the sending end after receiving feedback information which is fed back by the sending end and receives the application.
Further, the diaphragm is opened: the transmitter sends an opening instruction to the diaphragm control switch, and when the mechanical electronic lock is opened, the diaphragm is opened; when the transmitter sends an opening instruction to the diaphragm control switch but the mechanical electronic lock is closed, the diaphragm cannot be opened.
The invention realizes the controlled physical isolation of the image transmission between the internal network and the external network by arranging the controlled isolation device; the controlled isolation device is controlled by the sending end, and unidirectional data transmission is performed between the sender and the receiver by performing imaging coding and decoding on the data, so that unidirectional safe data transmission from the first network equipment to the second network equipment is realized, the safety of high-safety industrial intranet information is ensured, a clear safety boundary is defined, the management is convenient, and the controllability is stronger. The invention solves the defects of time and labor consumption, low working efficiency and low reliability of the transmission of data between two physically isolated networks, which is frequently operated manually, realizes the automatic operation of each part, does not need manual intervention, and saves manpower.
It should be understood that the statements herein reciting aspects are not intended to limit the critical or essential features of any embodiment of the invention, nor are they intended to limit the scope of the invention. Other features of the present invention will become apparent from the following description.
Drawings
The above and other features, advantages and aspects of various embodiments of the present invention will become more apparent by referring to the following detailed description when taken in conjunction with the accompanying drawings. In the drawings, like or similar reference characters designate like or similar elements, and wherein:
FIG. 1 shows a connection diagram of an image transmission physically isolated data unidirectional transmission system of the present invention;
FIG. 2 is a flow chart illustrating the one-way transmission method of the image transmission physical isolation data of the present invention;
wherein, the correspondence between the reference numbers and the component names in fig. 1 to 2 is:
100 sending ends, 110 transmitters, 120 coding equipment, 130LED screen modules, 200 receiving ends, 210 high-speed photoelectric camera shooting equipment, 220 decoding equipment, 230 receivers, 300 controlled isolation devices, 310 diaphragms, 320 isolation plates, 330 diaphragm controllers, 340 diaphragm control switches and 350 mechanical and electronic locks.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
In addition, the term "and/or" herein is only one kind of association relationship describing an associated object, and means that there may be three kinds of relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
The first aspect of the present embodiment is described below with reference to fig. 1, and an image transmission physical isolation data unidirectional transmission system is provided, including: a transmitting end 100, a receiving end 200, a controlled isolation device 300;
the transmitting end 100 is connected to a first network device, such as an intranet; the receiving end 200 is connected to a second network device, such as an extranet; according to the data transmission direction, data transmitted by a first network device sequentially passes through a transmitting end 100, a controlled isolating device 300 and a receiving end 200, and is finally received by a second network device;
the transmitting terminal 100 has an LED panel module 130; the transmitting end 100 is configured to receive data transmitted by a first network device, perform image coding to obtain an image, and the LED screen module 130 displays the image; the LED screen module 130 represents binary data by turning on and off the LED lamp to form the image;
the receiving end 200 is configured to obtain an image, decode the image to obtain decoded data, and send the decoded data to the second network device;
the controlled isolation device 300 is disposed on a transmission path of the transmitting end 100 and the receiving end 200; the controlled isolation device 300 is provided with an openable and closable diaphragm 310 for physically blocking unauthorized data transmission between the transmitting end 100 and the receiving end 200; the transmitting end 100 controls the opening and closing of the diaphragm 310. The design improves the security of one-way data transmission from the first network device to the second network device.
In the above embodiment, the transmitting end 100 is further provided with a transmitter 110 and an encoding device 120; wherein the content of the first and second substances,
the transmitter 110 is configured to receive data, transmit the data to the encoding device 120, and simultaneously transmit an opening instruction or a closing instruction to control opening or closing of the aperture 310;
the encoding device 130 is used for receiving data to perform imaging coding to form an image;
the image can be any other form of image with data identification function, such as a two-dimensional code, a bar code, various number combinations, and the like. The LED screen module is a screen display module, and can also be a liquid crystal screen and other display screens capable of displaying images.
In the above-described embodiment, the receiving end 200 is provided with the image pickup apparatus 210, the decoding apparatus 220, and the receiver 230; wherein the content of the first and second substances,
the image pickup device 210 is used for acquiring images, and a high-speed photoelectric image pickup device can be adopted;
the decoding device 220 is configured to decode the image to obtain decoded data;
the receiver 230 is used to send the decoded data to the second network device. Since data transmission is realized by the receiving end 200 by acquiring an image and decoding, it is possible to guarantee complete unidirectional transmission of data.
In the above embodiment, the controlled isolation device 300 is further provided with the diaphragm controller 330, the diaphragm management and control switch 340, and the mechatronic lock 350; wherein the content of the first and second substances,
the diaphragm controller 330 is used to control the opening and closing of the diaphragm 310;
the diaphragm control switch 340 is configured to receive an opening instruction or a closing instruction to control the opening and closing of the diaphragm 310 by the diaphragm controller 330;
the opening and closing of the mechatronic lock 350 controls the starting and ending of the one-way transmission system; the opening and closing of the mechatronic lock 350 is controlled manually.
In the above embodiment, the mechatronic lock 350 is implemented by a human control, such as an administrator. The arrangement of the mechanical electronic lock subjectively ensures the transmission of data, can be interrupted at any time in the transmission process, and increases the safety and flexibility of data transmission.
In the above embodiment, the controlled isolation device 300 includes the diaphragm 310 and the isolation plate 320, which can block the transmission channel between the transmitting end 100 and the receiving end 200 for physical isolation in the non-task time.
The controlled isolation device 300 is provided with an isolation plate 320 for isolating the transmitting end 100 and the receiving end 200, the isolation plate 320 is provided with a circular hole corresponding to a transmission path between the transmitter 110 and the receiver 230, and the diaphragm 310 is arranged at one side of the isolation plate 320 corresponding to the transmitting end 100 of the circular hole, so that when the diaphragm 310 is opened, the transmitter 110 transmits data to the receiver 230; in a normal state, the diaphragm 310 is closed, the circular hole is shielded by the diaphragm 310, and the transmitter 110 and the receiver 230 are in a physical isolation state.
In the above embodiment, when data is transmitted, the diaphragm 310 is opened only when it is satisfied that the transmitter 110 sends an opening instruction to the diaphragm management and control switch 340 and the mechatronic lock 350 is opened; when the transmitter 110 transmits an opening instruction to the diaphragm regulating switch 340 but the mechatronic lock 350 is closed, the diaphragm 310 is not opened.
In the above embodiment, when the data transmission is completed, the aperture 310 is closed: when the transmitter 110 transmits a closing instruction to the diaphragm regulating switch 340 or the mechatronic lock 350 is closed, the diaphragm 310 is closed.
In the above embodiment, before data transmission, the mechanical electronic lock 350 is manually controlled to be unlocked, and the one-way transmission system is started; after the data transmission is finished, the mechanical electronic lock 350 is manually controlled to be closed, and the one-way transmission system is ended. In the above embodiment, before data transmission, the first network device needs to send a data transmission application to the sending end 100, and after receiving feedback information that is fed back by the sending end 100 and receives the application, the first network device transmits data to the sending end. In this embodiment, by setting the controlled isolation device 300, controlled physical isolation between the internal network and the external network based on display screen image transmission is realized, and the security of data transmission is further improved. In normal state, the diaphragm 310 is closed, and the transmitter 110 and the receiver 230 are in a physical isolation state; in the data transmission state, the transmitter 110 controls the aperture 310 to open through the aperture controller 330, and starts data transmission, and after the data transmission is completed, the transmitter 110 controls the aperture 310 to close through the aperture controller 330, and is in a normal state. Therefore, the internal network and the external network of the system are in a physical isolation state when no task passes the audit, and the safety of data one-way transmission is improved. The control of the diaphragm 310 by the diaphragm controller 330 realizes automatic opening and closing of the diaphragm 310, and saves labor.
In the embodiment, in the physical isolation data one-way transmission system based on display screen image transmission, a clear safety boundary is defined, so that the management is convenient, the controllability is stronger, and the communication mode of one-way transmission is more reliable and safer.
A second aspect of the present embodiment is described below with reference to fig. 2, and provides a method for unidirectional transmission of image transmission physical isolation data, which adopts the unidirectional transmission system described above, and includes the following steps:
s1, manually unlocking the mechanical electronic lock 350; the first network device sends a data transmission application to the transmitter 110, and after the transmitter 110 receives the application and feeds back feedback information of receiving the application to the first network device, the first network device sends the data to the transmitter 110.
S2, the encoding device 120 image-encodes the data received by the transmitter 110 and displays it through the LED screen 130.
S3, the transmitter 110 transmits an aperture 310 opening instruction to the aperture controller 330, and the aperture 310 is opened.
In the present embodiment, the stop 310 can be opened only when the two conditions that the transmitter 110 sends the opening instruction to the stop controller 330 and the mechatronic lock 350 opens are satisfied at the same time, and the stop 310 cannot be opened when either of the two conditions is not satisfied.
S4, after the aperture 310 is opened, the decoding device 220 of the receiving end 200 acquires and decodes the image displayed on the LED panel 130 by the high-speed photoelectric camera device 210.
S5, the receiver 230 forwards the decoded data to the second network device; and after the data transmission is finished, the mechanical electronic lock is manually closed.
In the present embodiment, by providing the diaphragm 310 on the partition plate 320: in normal state, the diaphragm 310 is closed, and the transmitter 110 and the receiver 230 are in a physical isolation state; in the data transmission state, the transmitter 110 controls the aperture 310 to open through the aperture controller 330, and starts data transmission; after the data transmission is completed, the transmitter 110 controls the aperture 310 to close through the aperture controller 330, and is in a normal state.
In the present embodiment, the control of the diaphragm 310 by the diaphragm controller 330 realizes automatic switching of the diaphragm 310.
By the display screen image transmission-based physical isolation data one-way transmission method, physical isolation of the internal network and the external network is realized when no application is applied to the task of passing audit, and safety of internal network information transmission in high-safety industry is guaranteed. The defects that the transmission of data between two physically isolated networks is manually operated, time and labor are consumed, the efficiency is low, the frequent operation of personnel is needed, and the reliability is low are overcome through the logic control of each part.
The invention realizes the controlled physical isolation of the image transmission between the internal network and the external network by arranging the controlled isolation device; the controlled isolation device is controlled by the sending end, and unidirectional data transmission is performed between the sender and the receiver by performing imaging coding and decoding on the data, so that unidirectional safe data transmission from the first network equipment to the second network equipment is realized, the safety of high-safety industrial intranet information is ensured, a clear safety boundary is defined, the management is convenient, and the controllability is stronger. The invention solves the defects of time and labor consumption, low working efficiency and low reliability of the transmission of data between two physically isolated networks, which is frequently operated manually, realizes the automatic operation of each part, does not need manual intervention, and saves manpower.
It should be noted that, for simplicity of description, the above-mentioned method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present invention is not limited by the order of acts, as some steps may occur in other orders or concurrently in accordance with the invention. Further, those skilled in the art should also appreciate that the embodiments described in the specification are exemplary embodiments and that the acts and modules illustrated are not necessarily required to practice the invention.
In the description of the present application, the description of the terms "one embodiment," "some embodiments," etc. means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. An image transmission physical isolation data unidirectional transmission system, characterized by comprising: a sending end, a receiving end and a controlled isolation device; wherein the content of the first and second substances,
the transmitting end is provided with an LED screen module; the sending end is used for receiving data sent by first network equipment, carrying out imaging coding to obtain an image, and the LED screen module displays the image; the LED screen module represents binary data through the on and off of the LED lamps to form the image;
the receiving end is used for acquiring the image, decoding the image to obtain decoded data and sending the decoded data to second network equipment;
the controlled isolation device is arranged on a transmission path between the sending end and the receiving end; the controlled isolating device is provided with a diaphragm which can be opened and closed; and the transmitting end controls the opening and closing of the diaphragm.
2. The unidirectional transmission system of claim 1, wherein the transmitting end is further provided with a transmitter and an encoding device; wherein the content of the first and second substances,
the transmitter is used for receiving the data, transmitting the data to the coding equipment, and simultaneously transmitting an opening instruction or a closing instruction to control the opening or closing of the diaphragm;
the coding device is used for receiving the data to carry out imaging coding to form the image.
3. The unidirectional transmission system of claim 1, wherein the receiving end is provided with an image pickup device, a decoding device, and a receiver; wherein the content of the first and second substances,
the camera equipment is used for acquiring the image;
the decoding device is used for decoding the image to obtain decoded data;
the receiver is configured to send the decoded data to a second network device.
4. A one-way transmission system according to claim 2, wherein the controlled isolation device is further provided with a diaphragm controller, a diaphragm control switch and a mechatronic lock; wherein the content of the first and second substances,
the diaphragm controller is used for controlling the opening and closing of the diaphragm;
the diaphragm control switch is used for receiving the opening instruction or the closing instruction to control the diaphragm controller to open and close the diaphragm;
the opening and closing of the mechanical electronic lock controls the starting and the ending of the one-way transmission system; and manually controlling the opening and closing of the mechanical electronic lock.
5. A one-way transmission system according to claim 4, wherein when said data is transmitted, said diaphragm is opened: the transmitter transmits the opening instruction to the diaphragm control switch, and when the mechanical electronic lock is opened, the diaphragm is opened; when the transmitter sends an opening instruction to the diaphragm control switch but the mechanical electronic lock is closed, the diaphragm cannot be opened.
6. A one-way transmission system according to claim 4, wherein when said data transmission is completed, said diaphragm is closed: and when the transmitter sends the closing instruction to the diaphragm control switch or the mechanical electronic lock is closed, the diaphragm is closed.
7. A unidirectional transmission method for image transmission physical isolation data, which is characterized in that the unidirectional transmission system of claims 1-6 is adopted, and comprises the following steps:
the method comprises the steps that a sending end receives data sent by first network equipment, and after the data are received, an opening instruction is sent to a diaphragm controller to control opening of a diaphragm; the sending end carries out imaging coding on the data to form an image and displays the image;
the receiving end acquires the image, decodes the image to obtain decoded data and then sends the decoded data to the second network equipment;
after the receiving end acquires the image, the sending end sends a closing instruction to the diaphragm controller to control the closing diaphragm to cut off a transmission channel between the sending end and the receiving end.
8. The method of claim 7, wherein before data transmission, the one-way transmission system is started by manually controlling the mechanical electronic lock to be unlocked; and after the data transmission is finished, manually controlling the mechanical electronic lock to be closed, and finishing the one-way transmission system.
9. The method according to claim 7, wherein the first network device sends a data transmission application to the sending end, and sends the data to the sending end after receiving feedback information of receiving the application, which is fed back by the sending end.
10. The method of claim 7, wherein the diaphragm is open: the transmitter transmits the opening instruction to the diaphragm control switch, and when the mechanical electronic lock is opened, the diaphragm is opened; when the transmitter transmits the opening instruction to the diaphragm control switch but the mechanical electronic lock is closed, the diaphragm is not opened.
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| CN202111170777.9A CN114006732A (en) | 2021-10-08 | 2021-10-08 | One-way transmission system and method for image transmission physical isolation data |
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| CN202111170777.9A CN114006732A (en) | 2021-10-08 | 2021-10-08 | One-way transmission system and method for image transmission physical isolation data |
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| US20150062413A1 (en) * | 2013-08-30 | 2015-03-05 | Sony Corporation | Light emission control unit, light emission control method, and image pickup unit |
| CN109286437A (en) * | 2018-10-25 | 2019-01-29 | 北京轩宇信息技术有限公司 | A kind of controllable light transmitting device and method based on optoisolator |
| CN112468496A (en) * | 2020-11-26 | 2021-03-09 | 中铁信安(北京)信息安全技术有限公司 | Double physical isolation data one-way transmission system and method |
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- 2021-10-08 CN CN202111170777.9A patent/CN114006732A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150062413A1 (en) * | 2013-08-30 | 2015-03-05 | Sony Corporation | Light emission control unit, light emission control method, and image pickup unit |
| CN109286437A (en) * | 2018-10-25 | 2019-01-29 | 北京轩宇信息技术有限公司 | A kind of controllable light transmitting device and method based on optoisolator |
| CN112468496A (en) * | 2020-11-26 | 2021-03-09 | 中铁信安(北京)信息安全技术有限公司 | Double physical isolation data one-way transmission system and method |
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