Anti-disassembly network data encryption transmission device
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BATOU LIGHT IND VOCATIONAL TECHN COLLEGE
- Filing Date
- 2025-05-16
- Publication Date
- 2026-06-19
AI Technical Summary
Existing network data encryption devices, when faced with physical attacks, have a single level of protection, lack proactive response mechanisms, rely on manual installation for accuracy, and are disconnected from identity authentication and physical protection, resulting in a high risk of unauthorized disassembly and significant data leakage.
It adopts a biometric authentication-driven electromagnetic locking mechanism, pressure-sensing trigger protection, and mechanical self-locking structure to form a three-level protection system. Combined with biometric authentication, pressure sensing, and data erasure functions, it achieves fully automated protection throughout the entire process.
It significantly increases the difficulty of illegal dismantling, reduces the risk of human error, and ensures long-term stable operation of equipment in harsh environments.
Smart Images
Figure CN224385522U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of data transmission security technology, and more specifically, to a network data encryption transmission device that is tamper-proof. Background Technology
[0002] With the rapid development of information technology, the importance of network data encryption transmission equipment in fields such as finance, government affairs, and the military is becoming increasingly prominent. Traditional encryption devices typically focus on electronic layer protection, such as software encryption algorithms and firewall technology, but pay insufficient attention to physical layer security. In practical applications, devices may face the risk of physical attacks such as unauthorized disassembly and brute-force attacks, leading to the leakage of encryption keys or hardware damage, which in turn can cause data leaks or even system paralysis. Existing anti-disassembly technologies mostly use simple mechanical locks or single electronic lock structures, which have the following drawbacks:
[0003] Single level of protection: Mechanical locks are easily damaged by tools, and electronic locks rely on external power supply and may fail after power failure;
[0004] Lack of proactive response mechanism: Traditional devices cannot proactively trigger data protection or self-destruct functions when subjected to physical intrusion;
[0005] Installation accuracy depends on manual operation: Mechanical locking structures require high installation alignment accuracy, and improper operation can easily lead to locking failure.
[0006] Disconnect between identity authentication and physical protection: Biometric technology is mostly used for access control and has not formed a linkage protection with the physical structure of the device.
[0007] Therefore, there is an urgent need for an encrypted transmission device that integrates multiple anti-tampering mechanisms, has intelligent response capabilities, and is easy to operate, in order to cope with physical security threats in complex environments. Utility Model Content
[0008] 1. Technical problems to be solved
[0009] To address the problems existing in the prior art, the purpose of this utility model is to provide a network data encryption transmission device that is tamper-proof. It can realize an electromagnetic locking mechanism driven by biometric authentication, pressure-sensing trigger protection, and mechanical self-locking structure to form a three-level protection system of "authentication-locking-response", which significantly increases the difficulty of unauthorized disassembly.
[0010] 2. Technical Solution
[0011] To solve the above problems, the present invention adopts the following technical solution.
[0012] A network data encryption transmission device with anti-disassembly features a housing, with a matching anti-disassembly cover plate on the upper end of the housing. An internal circuit module is fixedly installed inside the housing. Connectors are fixedly installed at the four corners of the lower end of the anti-disassembly cover plate. Four mating slots corresponding to the connectors are opened on the upper end of the housing. Electromagnetic locking components are embedded in the sides of the mating slots. A biometric authentication device is installed on the outer end of the housing.
[0013] Furthermore, the connector includes a positioning post with a telescopic groove at its lower end. A matching sensing post is slidably installed in the telescopic groove. A compression spring is fixedly connected between the sensing post and the top wall of the telescopic groove. A locking groove is provided at the end of the positioning post near the electromagnetic locking component. When installing the anti-disassembly cover, the connector is inserted along the mating groove, and the positioning post is precisely positioned by overcoming the elastic force of the compression spring. Then, the installation is achieved by the electromagnetic locking of the locking groove and the electromagnetic locking component. At this time, the anti-disassembly cover is in a non-removable mode.
[0014] Furthermore, the electromagnetic locking component includes a shielding shell with a movable groove at one end near the positioning post. An electromagnet is fixedly installed inside the movable groove, and a matching locking post is slidably installed at the opening of the movable groove, with the locking post corresponding to the locking groove. A magnet is fixedly connected to the inner end of the locking post, and a compression spring is fixedly connected between the magnet and the electromagnet. When installing the anti-disassembly cover, identity authentication is performed first through a biometric authentication device. After successful authentication, the electromagnet is activated to attract the magnet, causing it to move the locking post against the elastic force of the compression spring to the movable groove, where it no longer obstructs the docking groove. At this time, the connector can be inserted normally. After the anti-disassembly cover is installed, the electromagnet is de-energized and loses its magnetic attraction to the magnet. Under the elastic force of the compression spring, the locking post is pushed into the locking groove to achieve positioning of the positioning post.
[0015] Furthermore, the docking groove has a T-shaped cross-section, including positioning grooves and pressure sensing grooves distributed vertically. The positioning grooves match the positioning posts, and the depth of the pressure sensing groove is less than the length of the sensing post. A pressure sensor is fixedly installed at the bottom of the pressure sensing groove. The positioning post fits perfectly with the positioning groove, ensuring precise alignment between the locking post and the locking groove. During insertion, the sensing post will be compressed relative to the compression spring to shorten its length until it matches the pressure sensing groove. At this time, the pressure sensor can detect that the pressure has reached the threshold and send a signal to the electromagnet to control it to cut off the power and lock.
[0016] Furthermore, multiple evenly distributed heat dissipation holes are provided at both ends of the outer casing, which can quickly dissipate the heat generated by the internal circuit module to the outside when it is working.
[0017] Furthermore, the internal circuit module includes an encrypted transmission chip, a network communication interface, and a power supply.
[0018] 3. Beneficial effects
[0019] Compared with existing technologies, the advantages of this utility model are:
[0020] (1) This solution forms a three-level protection system of “authentication-locking-response” through a biometric authentication-driven electromagnetic locking mechanism, pressure-sensing trigger protection and mechanical self-locking structure, which significantly increases the difficulty of illegal disassembly.
[0021] (2) Biometric authentication, pressure sensing and data erasure functions are deeply coupled to achieve full-process automated protection from identity verification to abnormal response, reducing the risk of human error.
[0022] (3) The inclined honeycomb heat dissipation holes and heat conduction structure design ensure heat dissipation efficiency while taking into account dust and water resistance requirements, ensuring that the equipment can operate stably for a long time in harsh environments. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the structure of this utility model after installation;
[0024] Figure 2 This is a schematic diagram of the structure of this utility model before installation;
[0025] Figure 3 This is a schematic diagram of the structure of the electromagnetic locking component of this utility model;
[0026] Figure 4 This is a cross-sectional view of the present invention;
[0027] Figure 5 This utility model Figure 4 Enlarged view of point A in the middle.
[0028] Explanation of the labels in the diagram:
[0029] 1. Outer shell; 2. Anti-disassembly cover; 3. Internal circuit module; 4. Connector; 401. Positioning post; 402. Sensing post; 403. Compression spring one; 404. Locking slot; 5. Biometric authenticator; 6. Electromagnetic locking component; 601. Shielding shell; 602. Electromagnet; 603. Locking post; 604. Magnet block; 605. Compression spring two; 7. Docking slot; 8. Heat dissipation hole; 9. Pressure sensor. Detailed Implementation
[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0031] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0033] Example:
[0034] 1. Structure of the outer casing 1 and the anti-disassembly cover 2
[0035] The outer casing 1 is made of high-strength aluminum alloy in one piece, with internal reinforcing ribs to improve impact resistance. Its inner wall has a pre-embedded electromagnetic leakage shielding layer, and the surface is coated with an insulating layer to prevent electrostatic interference. The tamper-evident cover 2 is a rectangular metal cover with sealing strips along its edges, tightly fitting against the mating surface at the top of the outer casing 1 to form a waterproof and dustproof barrier.
[0036] 2. Design of the fit between connector 4 and mating groove 7
[0037] The connector 4 is made of stainless steel and includes a positioning post 401 and a sensing post 402. The positioning post 401 is a cylindrical structure, with the sensing post 402 installed in a telescopic groove at its lower end. The end of the sensing post 402 is a hemispherical protrusion with a wear-resistant coating. The elastic coefficient of the compression spring 403 is precisely calculated to ensure that the sensing post 402 generates a detectable linear pressure change when inserted into the docking groove 7. The T-shaped cross-section design of the docking groove 7 is divided into upper and lower parts: the upper positioning groove matches the diameter of the positioning post 401 to ensure axial alignment accuracy; the lower pressure sensing groove is slightly less than the initial length of the sensing post 402, forcing the sensing post 402 to compress the spring 403 and trigger the pressure sensor 9 when fully inserted.
[0038] 3. The linkage mechanism of electromagnetic locking component 6
[0039] The shielding shell 601 of the electromagnetic locking component 6 is made of magnetically conductive stainless steel. The internal electromagnet 602 adopts a low-power coil design, which generates a strong magnetic field to attract the magnet block 604 when energized. The locking post 603 is a stepped cylinder with a tapered guide head at the front end to reduce frictional resistance, and the rear end is welded and fixed to the magnet block 604. The preload of the compression spring 605 is set to 1.2 times the magnetic force of the electromagnet 602 to ensure that the locking post 603 can quickly reset and insert into the locking slot 404 after power is cut off.
[0040] 4. Integration of Biometric Authentication Device 5
[0041] The biometric authentication device 5 is embedded in the side wall of the housing 1 and includes a fingerprint recognition module and an iris scanning module. Its circuit is directly connected to the control board of the electromagnetic locking device 6. After successful authentication, the controller sends a pulse signal to the electromagnet 602, which drives the magnet block 604 to move and maintain the unlocked state for 10 seconds. After the timeout, the power is automatically cut off and the lock is restored.
[0042] 5. Protection design of internal circuit module 3
[0043] The encrypted transmission chip of internal circuit module 3 uses a hardware accelerator based on the national cryptographic SM4 algorithm. The network communication interface is a shielded RJ45 socket, grounded to the outer casing 1 via a metal spring. The power supply is a lithium thionyl chloride battery, encapsulated in a fireproof and insulated chamber, with a reverse polarity protection diode on its output line. The entire circuit board is encapsulated in flame-retardant epoxy resin, with only the heat dissipation hole 8 area exposed.
[0044] 6. Heat dissipation holes 8 and thermal management
[0045] The heat dissipation holes 8 are arranged in a honeycomb pattern, and the inner side is covered with a dustproof metal filter. The holes are inclined at 15° to avoid direct liquid splashing. A thermally conductive silicone pad is attached to the inner wall of the outer casing 1 to conduct the heat of the internal circuit module 3 to the surface of the outer casing 1 for even dissipation.
[0046] It should be noted that the controller can be set up separately or integrated into the electromagnetic locking component 6 or the internal circuit module 4, and is electrically connected to the electromagnet 602, the pressure sensor 9 and the biological verifier 5. The specific circuit connection method and control principle are existing technologies known to those skilled in the art, and will not be described in detail here.
[0047] Working principle:
[0048] Identity authentication and unlocking phase:
[0049] After the user completes fingerprint or iris verification via biometric authentication device 5, the controller sends a start signal to the electromagnet 602 of the electromagnetic locking component 6. The electromagnet 602 is energized to generate a magnetic field, which attracts the magnet block 604 to retract into the moving groove, overcoming the resistance of the compression spring 605. This causes the locking pin 603 to disengage from the path of the docking groove 7, at which point the anti-tamper cover 2 can be pressed down.
[0050] Assembly process of anti-disassembly cover 2:
[0051] The connector 4 of the anti-disassembly cover 2 is aligned with the mating groove 7 of the outer casing 1 and inserted. The positioning pin 401 first enters the positioning groove of the T-section to achieve radial limiting; as it continues to press down, the sensing pin 402 contacts the bottom of the pressure sensing groove, the compression spring 403 is compressed, and the sensing pin 402 retracts into the positioning pin 401. When the pressure sensor 9 detects that the pressure value has reached the set threshold, it sends a signal to the controller, the electromagnet 602 is de-energized, and the magnet 604, pushed by the compression spring 605, drives the locking pin 603 to insert into the locking groove 404, completing the mechanical locking.
[0052] Anti-disassembly protection trigger mechanism:
[0053] If the tamper-evident cover 2 is forcibly pried open without verification, the sensing column 402 of the connector 4 will trigger an abnormal signal from the pressure sensor 9 due to abnormal displacement, and the controller will immediately activate the following protection:
[0054] Send an erase command to the encrypted transmission chip to clear the stored encryption key;
[0055] Cut off the power supply output to prevent circuit module 3 from continuing to operate.
[0056] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.
Claims
1. A tamper-resistant network data encryption transmission device comprising a housing (1), characterized in that: The upper end of the outer shell (1) is provided with a matching anti-disassembly cover plate (2). An internal circuit module (3) is fixedly installed inside the outer shell (1). Connectors (4) are fixedly installed at the four corners of the lower end of the anti-disassembly cover plate (2). Four docking slots (7) corresponding to the connectors (4) are opened at the upper end of the outer shell (1). Electromagnetic locking components (6) are embedded on the side of the docking slots (7). A biometric authentication device (5) is installed at the outer end of the outer shell (1).
2. The tamper-resistant network data encryption transmission device of claim 1, wherein: The connector (4) includes a positioning post (401), the lower end of the positioning post (401) is provided with a telescopic groove, a matching sensing post (402) is slidably installed in the telescopic groove, a compression spring (403) is fixedly connected between the sensing post (402) and the top wall of the telescopic groove, and a locking groove (404) is provided at the end of the positioning post (401) near the electromagnetic locking member (6).
3. The tamper-resistant network data encryption transmission device of claim 2, wherein: The electromagnetic locking component (6) includes a shielding shell (601). The shielding shell (601) has a moving groove at one end near the positioning post (401). An electromagnet (602) is fixedly installed inside the moving groove. A matching locking post (603) is slidably installed at the opening of the moving groove, and the locking post (603) corresponds to the locking groove (404). A magnet block (604) is fixedly connected to the inner end of the locking post (603). A compression spring (605) is fixedly connected between the magnet block (604) and the electromagnet (602).
4. The tamper-resistant network data encryption transmission device of claim 2, wherein: The cross-sectional shape of the docking groove (7) is T-shaped, including positioning grooves distributed vertically and pressure sensing grooves. The positioning grooves are matched with the positioning column (401). The depth of the pressure sensing groove is less than the length of the sensing column (402), and a pressure sensor (9) is fixedly installed at the bottom of the pressure sensing groove.
5. The tamper-resistant network data encryption transmission device of claim 1, wherein: Multiple evenly distributed heat dissipation holes (8) are provided at both the left and right ends of the outer shell (1).
6. The tamper-resistant network data encryption transmission device according to any one of claims 1-5, characterized in that: The internal circuit module (3) includes an encryption transmission chip, a network communication interface, and a power supply.