A data transmission method and device for protecting against high voltage discharge

Abstract

The present invention relates to a data transmission method and device for protecting against high-voltage discharge, comprising: a first interface for connecting to a terminal device; a second interface for connecting to an external device; a serial port data transmission path, the serial port data transmission path is respectively connected to the first interface and the second interface, and is used to transmit data sent by the terminal to the external device; an optical fiber data transmission path, the optical fiber data transmission path is respectively connected to the first interface and the second interface, and is used to transmit data obtained by the terminal to the external device; and a judgment module is used to determine the data transmission path according to the data transmission status between the terminal and the external device. The present invention uses optical fiber data transmission to replace the current interface transmission of traditional USB devices, ensuring that the terminal motherboard is not attacked by high-voltage current, protecting the user data information security, and at the same time, the optical fiber signal has the advantage of faster transmission speed.

Description

Technical Field

[0001] The present invention relates to the field of information security technology, and in particular to a data transmission method and device for protecting against high-voltage discharge. Background Art

[0002] USBKILLER is a USB attack device used by attackers. It looks like an ordinary USB device, but has multiple high-resistance capacitors welded inside. After connecting to the terminal device, it uses VBUS (power connection) to quickly charge to 200V. When releasing the data signal, it can bypass the current protection and instantly break through the terminal chip, causing permanent damage to the terminal motherboard. The data information stored in the terminal cannot be restored, causing irreparable losses to the user. Therefore, necessary technical means are urgently needed to protect the high-voltage discharge behavior of the USB port to ensure the security of user data information. Summary of the invention

[0003] In view of this, the present invention provides a data transmission method and device for protecting against high-voltage discharge, which uses optical fiber data transmission instead of traditional current interface transmission to ensure that the terminal motherboard is not attacked by high-voltage current, at least partially solving the problems existing in the prior art.

[0004] The specific content of the invention is:

[0005] A data transmission method for protecting a USB port from high-voltage discharge, applied to a transfer device, comprising:

[0006] In response to monitoring that the terminal device acquires data from the external device through the switching device, starting the optical fiber data transmission path;

[0007] Data is transmitted to the terminal device through the optical fiber data transmission path to protect the external device from high voltage discharge to the terminal device.

[0008] Further, transmitting data to the terminal device through the optical fiber data transmission path includes:

[0009] After the data format of the data is converted, the converted data is transmitted to the terminal device through the optical fiber data transmission path.

[0010] Furthermore, it also includes:

[0011] In response to monitoring that the terminal device sends data to the external device through the switching device, the data is sent through the data transmission protocol of the interface of the switching device.

[0012] Furthermore, in response to monitoring that the terminal device obtains data from the external device through the switching device, before starting the optical fiber data transmission path, the method further includes:

[0013] In response to detecting that an external device is connected to the interface of the switching device, establishing a connection between the terminal and the external device;

[0014] The data transmission status between the terminal and the external device after the connection is monitored, and the data transmission status includes at least one of the following: the terminal obtains external data, and the terminal sends data to the outside.

[0015] A data transmission method for protecting against high-voltage discharge, applied to a terminal device, comprising:

[0016] In response to monitoring that the terminal device acquires data from an external device, starting the optical fiber data transmission path;

[0017] The data is obtained through the optical fiber data transmission path to prevent the external device from performing high voltage discharge on the terminal device.

[0018] Further, obtaining the data through the optical fiber data transmission path includes:

[0019] After the data format of the data is converted, the converted data is obtained through the optical fiber data transmission path.

[0020] Furthermore, it also includes:

[0021] In response to monitoring that the terminal device sends data to the external device, the data is sent through the data transmission protocol of the optical fiber data transmission channel.

[0022] Furthermore, in response to monitoring that the terminal device acquires data from the external device, before starting the optical fiber data transmission path, the method further includes:

[0023] In response to detecting that an external device is connected to an interface of the terminal device, establishing a connection between the terminal and the external device;

[0024] The data transmission status between the terminal and the external device after the connection is monitored, and the data transmission status includes at least one of the following: the terminal obtains external data, and the terminal sends data to the outside.

[0025] A switching device, comprising:

[0026] A first interface, used for connecting to a terminal device;

[0027] The second interface is used to connect to an external device;

[0028] a serial port data transmission path, the serial port data transmission path being connected to the first interface and the second interface respectively, and being used for transmitting data sent by the terminal to the external device;

[0029] an optical fiber data transmission path, the optical fiber data transmission path being connected to the first interface and the second interface respectively and being used for transmitting data acquired by the terminal to the external device;

[0030] The judgment module is used to determine the data transmission path according to the data transmission status between the terminal and the external device.

[0031] A terminal device, comprising:

[0032] Equipment body;

[0033] Interface, used for connecting with external devices;

[0034] A serial port data transmission path, the serial port data transmission path is connected to the interface and is used to transmit data sent by the terminal to the external device;

[0035] an optical fiber data transmission path, the optical fiber data transmission path being connected to the interface and being used for transmitting data acquired by the terminal to the external device;

[0036] The judgment module is used to determine the data transmission path according to the data transmission status between the terminal and the external device.

[0037] The beneficial effects of the present invention are embodied in:

[0038] The optical fiber data transmission path described in the present invention is deployed using optical fiber materials. On the basis of traditional data transmission through data transmission interfaces such as USB interfaces, an optical fiber data transmission path is added. Under certain specific conditions, such as when the terminal device is monitored to obtain data from an external device, the optical fiber material has good insulation properties and can isolate high voltage to protect the user terminal device motherboard from being attacked by high voltage current. At the same time, the optical fiber signal has the advantage of faster transmission speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0040] Figure 1 This is a flow chart of a data transmission method for protecting a USB port from high-voltage discharge according to an embodiment of the present invention;

[0041] Figure 2 This is a flow chart of a data transmission method for protecting against high-voltage discharge according to an embodiment of the present invention;

[0042] Figure 3 This is a schematic diagram of the structure of a switching device according to an embodiment of the present invention;

[0043] Figure 4 The present invention is a schematic diagram of a terminal device structure according to an embodiment of the present invention. DETAILED DESCRIPTION

[0044] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0045] It should be noted that the following embodiments and features in the embodiments may be combined with each other in the absence of conflict; and, based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in the field without making any creative work are within the scope of protection of the present disclosure.

[0046] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein may be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on the present disclosure, it should be understood by those skilled in the art that an aspect described herein may be implemented independently of any other aspect, and two or more of these aspects may be combined in various ways. For example, any number of aspects described herein may be used to implement the device and / or practice the method. In addition, other structures and / or functionalities other than one or more of the aspects described herein may be used to implement this device and / or practice this method.

[0047] The present invention provides a data transmission method embodiment for protecting a USB port from high voltage discharge, which is applied to a switching device, such as Figure 1 As shown, including:

[0048] S11: in response to monitoring that the terminal device obtains data from the external device through the switching device, starting the optical fiber data transmission path;

[0049] S12: Transmitting data to the terminal device via the optical fiber data transmission path to prevent the external device from performing high voltage discharge on the terminal device.

[0050] Understandably, Figure 1The terminal device of the embodiment shown can be a computer, mobile computer, mobile phone or other device with a data transmission interface that can transmit data to an external device, or other device with a data transmission interface that can transmit data to an external device; the external device can be a mobile device such as a USB flash drive or a mobile hard disk with a data transmission interface, or other device with a data transmission interface; the data transmission interface can be a USB interface, a serial port, etc. The optical fiber data transmission path is deployed with optical fiber materials, making full use of the insulation of optical fiber materials to protect the mainboard of the user terminal device from being attacked by high voltage current.

[0051] Preferably, transmitting data to the terminal device via the optical fiber data transmission path comprises:

[0052] After the data format of the data is converted, the converted data is transmitted to the terminal device through the optical fiber data transmission path. This process converts the format of the optical fiber signal data into data that can be read or stored by the terminal device, and then sends the readable or storable data to the terminal device.

[0053] Preferably, it also includes:

[0054] In response to monitoring that the terminal device sends data to the external device through the switching device, the data is sent through the data transmission protocol of the interface of the switching device.

[0055] Preferably, in response to monitoring that the terminal device acquires data from the external device through the switching device, before starting the optical fiber data transmission path, the method further includes:

[0056] In response to detecting that an external device is connected to the interface of the switching device, establishing a connection between the terminal and the external device;

[0057] The data transmission status between the terminal and the external device after the connection is monitored, and the data transmission status includes at least one of the following: the terminal obtains external data, and the terminal sends data to the outside.

[0058] Figure 1 The embodiment shown is a method flow of high-voltage discharge protection on the switching device side outside the user terminal device. The method flow of high-voltage discharge protection on the user terminal side is detailed in Figure 2 The embodiment shown.

[0059] The present invention provides an embodiment of a data transmission method for protecting against high voltage discharge, which is applied to a terminal device, such as Figure 2 As shown, including:

[0060] S21: in response to monitoring that the terminal device acquires data from an external device, starting an optical fiber data transmission path;

[0061] S22: Acquire the data through the optical fiber data transmission path to prevent the external device from performing high voltage discharge on the terminal device.

[0062] Understandably, Figure 2 The terminal device of the embodiment shown can be a computer, mobile computer, mobile phone or other device with a data transmission interface that can transmit data to an external device, or other device with a data transmission interface that can transmit data to an external device; the external device can be a mobile device such as a USB flash drive or a mobile hard disk with a data transmission interface, or other device with a data transmission interface; the data transmission interface can be a USB interface, a serial port, etc. The optical fiber data transmission path is deployed with optical fiber materials, making full use of the insulation of optical fiber materials to protect the mainboard of the user terminal device from being attacked by high voltage current.

[0063] Preferably, obtaining the data through the optical fiber data transmission path includes:

[0064] After the data format of the data is converted, the converted data is obtained through the optical fiber data transmission path. In this process, the optical fiber signal data is converted into a format that is readable or storable by the terminal device, and then the readable or storable data is obtained.

[0065] Preferably, it also includes:

[0066] In response to monitoring that the terminal device sends data to the external device, the data is sent through the data transmission protocol of the optical fiber data transmission channel.

[0067] Preferably, in response to monitoring that the terminal device acquires data from the external device, before starting the optical fiber data transmission path, the method further includes:

[0068] In response to detecting that an external device is connected to an interface of the terminal device, establishing a connection between the terminal and the external device;

[0069] The data transmission status between the terminal and the external device after the connection is monitored, and the data transmission status includes at least one of the following: the terminal obtains external data, and the terminal sends data to the outside.

[0070] The present invention provides a switching device embodiment, such as Figure 3 As shown, including:

[0071] A first interface 31, used for connecting to a terminal device;

[0072] A second interface 32, used for connecting to an external device;

[0073] A serial port data transmission path 33, the serial port data transmission path 33 is connected to the first interface 31 and the second interface 32 respectively, and is used to transmit data sent by the terminal to the external device;

[0074] An optical fiber data transmission path 34, wherein the optical fiber data transmission path 34 is connected to the first interface 31 and the second interface 32 respectively, and is used for transmitting data acquired by the terminal to the external device;

[0075] The determination module 35 is used to determine a data transmission path according to the data transmission status between the terminal and the external device.

[0076] Understandably, Figure 3 The terminal device of the embodiment shown can be a computer, mobile computer, mobile phone or other device with a data transmission interface that can transmit data to an external device, or other device with a data transmission interface that can transmit data to an external device; the external device can be a mobile device such as a USB flash drive or a mobile hard disk with a data transmission interface, or other device with a data transmission interface; the data transmission interface can be a USB interface, a serial port, etc. The optical fiber data transmission path is deployed with optical fiber materials, making full use of the insulation of optical fiber materials to protect the mainboard of the user terminal device from being attacked by high voltage current.

[0077] Figure 3 The switching device shown can be integrated as an independent device, or integrated with external devices or terminal devices in the form of embedded components to achieve the purpose of protecting against high-voltage discharge and protect the safety of the user terminal motherboard. Figure 4 The embodiment shown.

[0078] The present invention provides a terminal device embodiment, such as Figure 4 As shown, including:

[0079] Equipment body;

[0080] Interface 41, used for connecting with external devices;

[0081] A serial port data transmission path 42, the serial port data transmission path 42 is connected to the interface 41 and is used to transmit data sent by the terminal to the external device;

[0082] An optical fiber data transmission path 43, the optical fiber data transmission path 43 is connected to the interface 41 and is used to transmit the data obtained by the terminal to the external device;

[0083] The determination module 44 is configured to determine a data transmission path according to a data transmission status between the terminal and the external device.

[0084] Understandably, Figure 4 The device body of the terminal device in the illustrated embodiment can be a computer, a mobile computer, a mobile phone or other device, or other device that can transmit data with an external device; the external device can be a mobile device such as a USB flash drive or a mobile hard disk with a data transmission interface, or other device with a data transmission interface; the data transmission interface and the interface 41 can be a USB interface, a serial port, etc. The judgment module 44 can be deployed according to the properties and hardware environment of the specific device body, such as being integrated into the central processor of the device body, or being set separately, etc. The optical fiber data transmission path is deployed using optical fiber materials, making full use of the insulation of optical fiber materials, protecting the user terminal device motherboard from being attacked by high voltage current.

[0085] The optical fiber data transmission path described in the present invention is deployed using optical fiber materials. On the basis of traditional data transmission through data transmission interfaces such as USB interfaces, an optical fiber data transmission path is added. Under certain specific conditions, such as when the terminal device is monitored to obtain data from an external device, the optical fiber material has good insulation properties and can isolate high voltage to protect the user terminal device motherboard from being attacked by high voltage current. At the same time, the optical fiber signal has the advantage of faster transmission speed.

[0086] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A data transmission method for protecting a USB port from high voltage discharge, characterized in that: Applied to a switching device, the method comprises: In response to monitoring that the terminal device acquires data from the external device through the switching device, starting the optical fiber data transmission path; Transmitting data to the terminal device through the optical fiber data transmission path to prevent the external device from performing high voltage discharge on the terminal device; In response to monitoring that the terminal device sends data to the external device through the switching device, sending the data through a data transmission protocol of an interface of the switching device; The optical fiber data transmission path is deployed using optical fiber materials.

2. The method according to claim 1, characterized in that Transmitting data to the terminal device through the optical fiber data transmission path includes: After the data format of the data is converted, the converted data is transmitted to the terminal device through the optical fiber data transmission path.

3. The method according to claim 1, characterized in that In response to monitoring that the terminal device acquires data from the external device through the switching device, before starting the optical fiber data transmission path, the method further includes: In response to detecting that an external device is connected to the interface of the switching device, establishing a connection between the terminal and the external device; The data transmission status between the terminal and the external device after the connection is monitored, and the data transmission status includes at least one of the following: the terminal obtains external data, and the terminal sends data to the outside.

4. A data transmission method for protecting against high voltage discharge, characterized in that: Applied to a terminal device, the method comprises: In response to monitoring that the terminal device acquires data from an external device, starting the optical fiber data transmission path; Acquiring the data through the optical fiber data transmission path to prevent the external device from performing high voltage discharge on the terminal device; In response to monitoring that the terminal device sends data to the external device, sending the data through a data transmission protocol of the optical fiber data transmission channel; The optical fiber data transmission path is deployed using optical fiber materials.

5. The method according to claim 4, characterized in that Acquiring the data through the optical fiber data transmission path includes: After the data format of the data is converted, the converted data is obtained through the optical fiber data transmission path.

6. The method according to claim 4, characterized in that In response to monitoring that the terminal device acquires data from the external device, before starting the optical fiber data transmission path, the method further includes: In response to detecting that an external device is connected to an interface of the terminal device, establishing a connection between the terminal and the external device; The data transmission status between the terminal and the external device after the connection is monitored, and the data transmission status includes at least one of the following: the terminal obtains external data, and the terminal sends data to the outside.

7. A switching device, characterized in that: include: A first interface, used for connecting to a terminal device; The second interface is used to connect to an external device; a serial port data transmission path, the serial port data transmission path being connected to the first interface and the second interface respectively, and being used for transmitting data sent by the terminal to the external device; an optical fiber data transmission path, the optical fiber data transmission path being connected to the first interface and the second interface respectively and being used for transmitting data acquired by the terminal to the external device; A determination module, configured to determine a data transmission path according to a data transmission status between the terminal and the external device; The optical fiber data transmission path is deployed using optical fiber materials.

8. A terminal device, characterized in that: include: Interface, used for connecting with external devices; A serial port data transmission path, the serial port data transmission path is connected to the interface and is used to transmit data sent by the terminal to the external device; an optical fiber data transmission path, the optical fiber data transmission path being connected to the interface and being used for transmitting data acquired by the terminal to the external device; A determination module, configured to determine a data transmission path according to a data transmission status between the terminal and the external device; The optical fiber data transmission path is deployed using optical fiber materials.

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