Security encryption display system and display method
By introducing the authentication and encryption module of encrypted cables into the display system, the security problems during image signal transmission are solved, and the secure transmission and display of signals are realized, which is suitable for government and finance fields.
Patent Information
- Application Number
- CN202510247873.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-04
- Publication Date
- 2025-07-18
AI Technical Summary
The existing display systems lack the necessary encryption and security protection measures during image signal transmission, resulting in high risks of information leakage and illegal access.
A secure encrypted display system is adopted, including a signal source, a display terminal and an encrypted cable. By integrating authentication and encryption modules in the encrypted cable, the signal source is authenticated and the original image signal is encrypted. The display terminal decrypts and displays the encrypted signal.
Ensure the security of image signals during transmission, prevent illegal access and information leakage, reduce hardware transformation, and be suitable for scenarios such as government and finance that require high localization, and prevent physical tampering and software reverse cracking.
Smart Images
Figure CN120335750A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of signal transmission and screen display, and in particular, to a secure encryption display system and a display method. Background Art
[0002] Currently, existing display systems usually directly transmit image signals through standard signal channels such as HDMI and DP. During the transmission of image signals, necessary encryption and security protection measures are lacking. Summary of the Invention
[0003] The technical problem to be solved by the present invention is that necessary encryption and security protection measures are lacking during the transmission of image signals, and a secure encryption display system and a display method are provided.
[0004] To solve the above technical problem, the present invention provides a technical solution: a secure encryption display system, including: a signal source, a display terminal, and an encryption cable between the signal source and the display terminal; wherein, the signal source is used to provide an original image signal; wherein, the encryption cable has an authentication and encryption module, and the authentication and encryption module is used to authenticate the signal source and encrypt the original image signal; wherein, the display terminal has a decryption and display module, and the decryption and display module decrypts the encrypted original image signal and performs screen display according to the decrypted original image signal. The beneficial effects are at least: ensuring the security of the original image signal during the transmission process, and effectively preventing illegal access and information leakage.
[0005] As a preferred solution of the secure encrypted display system, the signal source is configured to: respond to the authentication request of the encrypted cable and send the response result of the authentication request to the encrypted cable; respond to the challenge code request of the encrypted cable and send the response result of the challenge code request to the encrypted cable; respond to the signal transmission request of the encrypted cable and send the response result of the signal transmission request to the encrypted cable, where the response result of the signal transmission request is to provide the original image signal; the encrypted cable is configured to: send an authentication request to the signal source and process the response result of the authentication request from the signal source; send a challenge code request to the signal source and process the response result of the challenge code request from the signal source; send a signal transmission request to the signal source and process the response result of the signal transmission request from the signal source, where the process of processing the response result of the signal transmission request from the signal source includes: encrypting the original image signal. The display terminal is configured to: process the encrypted original image signal from the encrypted cable, where the process of processing the encrypted original image signal from the encrypted cable includes: decrypting the encrypted original image signal and displaying the screen according to the decrypted original image signal. The beneficial effects are at least: providing a specific form of authentication and encryption and decryption.
[0006] As a preferred solution of the secure encrypted display system, the display terminal is configured to: if the authentication and encryption module for encrypting the original image signal is not corresponding to the decryption and display module for decrypting the encrypted original image signal, the decryption and display module performs algorithm destruction on the original image signal during the decryption process. The beneficial effects are at least: when the authentication and encryption module for encrypting the original image signal is not corresponding to the decryption and display module for decrypting the encrypted original image signal, the screen display is an abnormal screen, preventing information leakage.
[0007] As a preferred solution of the secure encrypted display system, the encrypted cable selects a standard signal channel and a standard general interface, and the authentication and encryption module is integrated inside. The beneficial effects are at least: aiming to reduce or avoid hardware transformation of the signal source and the display device.
[0008] As a preferred solution of the secure encrypted display system, the authentication and encryption module selects the national cryptographic algorithm SM2 for encryption. The beneficial effects are at least: The national cryptographic algorithm SM2 can ensure the confidentiality, integrity and authenticity of the signal transmission process. Compared with other algorithms, under the same security strength, the key length is shorter, and it also complies with the Chinese cryptographic industry standard (GM / T 0003-2012), taking into account both performance and compliance, and is especially suitable for scenarios with high requirements for localization such as government and finance.
[0009] As a preferred solution of the secure encrypted display system, the authentication and encryption module adopts an anti-physical tampering design. If physical tampering is triggered, the key of the authentication and encryption module is automatically erased. The beneficial effects are at least: preventing physical tampering and improving display security.
[0010] As a preferred solution of the secure encrypted display system, the hardware of the authentication and encryption module is bound to the software of the signal source. The beneficial effects are at least: preventing software reverse cracking.
[0011] To solve the above technical problem, the present invention provides another technical solution: a secure encrypted display method, which is implemented by the above-mentioned secure encrypted display system. The secure encrypted display method includes: providing an original image signal by the signal source; authenticating the signal source and encrypting the original image signal by the authentication and encryption module of the encryption cable; and decrypting the encrypted original image signal by the decryption and display module of the display terminal and displaying a picture according to the decrypted original image signal. The beneficial effects are at least: ensuring the security of the original image signal during transmission, effectively preventing illegal access and information leakage.
[0012] As a preferred solution of the secure encrypted display method, the encryption cable sends an authentication request to the signal source and processes the response result of the authentication request sent by the signal source; the encryption cable sends a challenge code request to the signal source and processes the response result of the challenge code request sent by the signal source; the encryption cable sends a signal transmission request to the signal source and processes the response result of the signal transmission request sent by the signal source. Among them, the process of processing the response result of the signal transmission request sent by the signal source includes: encrypting the original image signal; processing the encrypted original image signal sent by the encryption cable by the display terminal. Among them, the process of processing the encrypted original image signal sent by the encryption cable includes: decrypting the encrypted original image signal and displaying a picture according to the decrypted original image signal. The beneficial effects are at least: providing a specific form of authentication and encryption and decryption.
[0013] Further, if the authentication and encryption module for encrypting the original image signal does not correspond to the decryption and display module for decrypting the encrypted original image signal, the decryption and display module performs algorithmic destruction on the original image signal during the decryption process. The beneficial effects are at least as follows: When the authentication and encryption module for encrypting the original image signal does not correspond to the decryption and display module for decrypting the encrypted original image signal, the displayed image is an abnormal image, preventing information leakage.
[0014] In addition to the technical problems solved by the present invention, the technical features constituting the technical solution, and the beneficial effects brought by these technical features described above, other technical problems that the present invention can solve, other technical features included in the technical solution, and the beneficial effects brought by these technical features will be further described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic structural diagram of an embodiment of the present invention.
[0016] Figure 2 It is a flowchart of the method for authentication, encryption, and decryption of an embodiment of the present invention.
[0017] Figure 3 It is a schematic structural diagram of an encrypted cable according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0018] The present invention will be further described in detail below with reference to the accompanying drawings through specific embodiments. It should be noted here that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation on the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
[0019] See Figure 1 and Figure 2 , which shows a secure encryption display system. The secure encryption display system includes: a signal source 1, a display terminal 2, and an encrypted cable 3 between the signal source 1 and the display terminal 2.
[0020] Among them, the signal source is used to provide the original image signal. Specifically, the signal source is configured to: respond to the authentication request of the encrypted cable and send the response result of the authentication request to the encrypted cable. Respond to the challenge code request of the encrypted cable and send the response result of the challenge code request to the encrypted cable. Respond to the signal transmission request of the encrypted cable and send the response result of the signal transmission request to the encrypted cable. The response result of the signal transmission request is to provide the original image signal. It should be noted that the configuration of the signal source is implemented by software, that is, the signal source does not require hardware improvement, reducing the implementation cost.
[0021] In some embodiments, the signal source is a computer or a conference system.
[0022] Among them, the encrypted cable has an authentication and encryption module. The authentication and encryption module is used to authenticate the signal source and encrypt the original image signal, aiming to ensure that only the authorized signal source can establish a connection with the display terminal through the encrypted cable normally. Specifically, the encrypted cable is configured to: send an authentication request to the signal source and process the response result of the authentication request from the signal source. Send a challenge code request to the signal source and process the response result of the challenge code request from the signal source. Send a signal transmission request to the signal source and process the response result of the signal transmission request from the signal source. Among them, the process of processing the response result of the signal transmission request from the signal source includes: encrypting the original image signal.
[0023] In some embodiments, see Figure 3 , the encrypted cable 3 selects a standard signal channel 31 (for example, HDMI, DP, etc.) and a standard universal interface 32 (for example, USB, etc.), and the authentication and encryption module 33 is integrated inside. The purpose is to reduce or avoid hardware modification of the signal source and the display device.
[0024] In some embodiments, the authentication and encryption module selects a high-strength authentication protocol and encryption algorithm (for example, the national cryptography algorithm SM2) to ensure the confidentiality, integrity and authenticity during the data transmission process. Compared with RSA, the SM2 algorithm of national cryptography has a shorter key length under the same security strength (256-bit SM2 ≈ 3072-bit RSA), and at the same time complies with the Chinese cryptographic industry standard (GM / T 0003-2012), taking into account both performance and compliance, and is especially suitable for scenarios with high requirements for localization such as government and finance.
[0025] In some embodiments, the authentication and encryption module selects an anti-physical tampering design. If physical tampering is triggered, the key of the authentication and encryption module will be automatically erased.
[0026] In some embodiments, the hardware of the authentication and encryption module is bound to the software of the signal source (such as a TPM chip) to prevent software reverse cracking.
[0027] Among them, the display terminal has a decryption and display module. The decryption and display module is used to decrypt the encrypted original image signal and perform screen display according to the decrypted original image signal. Specifically, the display terminal is configured to: process the encrypted original image signal from the encrypted cable. Among them, the process of processing the encrypted original image signal from the encrypted cable includes: decrypting the encrypted original image signal and performing screen display according to the decrypted original image signal.
[0028] Furthermore, if the authentication and encryption module that encrypts the original image signal does not correspond to the decryption and display module that decrypts the encrypted original image signal, the decryption and display module destroys the algorithm of the original image signal during the decryption process to prevent information leakage. That is to say, when the authentication and encryption module that encrypts the original image signal corresponds to the decryption and display module that decrypts the encrypted original image signal, the screen display is a normal screen. When the authentication and encryption module that encrypts the original image signal does not correspond to the decryption and display module that decrypts the encrypted original image signal, the screen display is an abnormal screen. It should be noted that the abnormal screen is independent of the normal screen and there is no connection between the two, that is, the content of the normal screen cannot be inferred through the abnormal screen.
[0029] In some embodiments, the abnormal screen is a garbled screen.
[0030] See Figure 2 , what is shown in the figure is a secure encryption display method. The secure encryption display method is implemented by the secure encryption display system. The secure encryption display method includes: providing an original image signal by the signal source. Authenticating the signal source and encrypting the original image signal by the authentication and encryption module of the encrypted cable. Decrypting the encrypted original image signal by the decryption and display module of the display terminal and performing screen display according to the decrypted original image signal.
[0031] Specifically, an authentication request is sent from the encrypted cable to the signal source and the response result of the authentication request sent by the signal source is processed. A challenge code request is sent from the encrypted cable to the signal source and the response result of the challenge code request sent by the signal source is processed. A signal transmission request is sent from the encrypted cable to the signal source and the response result of the signal transmission request sent by the signal source is processed. Among them, the process of processing the response result of the signal transmission request sent by the signal source includes: encrypting the original image signal. The display terminal processes the encrypted original image signal sent by the encrypted cable. Among them, the process of processing the encrypted original image signal sent by the encrypted cable includes: decrypting the encrypted original image signal and displaying the picture according to the decrypted original image signal. If the authentication and encryption module for encrypting the original image signal does not correspond to the decryption and display module for decrypting the encrypted original image signal, the decryption and display module performs algorithm destruction on the original image signal during the decryption process to prevent information leakage.
[0032] The above only expresses the implementation manners of the present invention, and the description thereof is relatively specific and detailed, but it cannot be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.
Claims
1. A secure encryption display system, characterized in that, Comprising: A signal source, a display terminal, and an encrypted cable between the signal source and the display terminal; wherein, the signal source is used to provide an original image signal; wherein, the encrypted cable has an authentication and encryption module, and the authentication and encryption module is used to authenticate the signal source and encrypt the original image signal; wherein, the display terminal has a decryption and display module, and the decryption and display module decrypts the encrypted original image signal and displays the picture according to the decrypted original image signal.
2. The secure encrypted display system according to claim 1, wherein The signal source is configured to: respond to the authentication request of the encrypted cable and send the response result of the authentication request to the encrypted cable; respond to the challenge code request of the encrypted cable and send the response result of the challenge code request to the encrypted cable; Respond to the signal transmission request of the encrypted cable and send the response result of the signal transmission request to the encrypted cable, and the response result of the signal transmission request is to provide the original image signal; The encrypted cable is configured to: send an authentication request to the signal source and process the response result of the authentication request from the signal source; Send a challenge code request to the signal source and process the response result of the challenge code request from the signal source; Send a signal transmission request to the signal source and process the response result of the signal transmission request from the signal source, wherein the process of processing the response result of the signal transmission request from the signal source includes: encrypting the original image signal.
3. The secure encryption display system according to claim 2, wherein The display terminal is configured to: process the encrypted original image signal from the encrypted cable, wherein the process of processing the encrypted original image signal from the encrypted cable includes: decrypting the encrypted original image signal and displaying the picture according to the decrypted original image signal.
4. The secure encryption display system according to claim 3, wherein The display terminal is configured to: if the authentication and encryption module that encrypts the original image signal does not correspond to the decryption and display module that decrypts the encrypted original image signal, the decryption and display module performs algorithmic destruction on the original image signal during the decryption process.
5. The secure encryption display system according to claim 1, wherein The encrypted cable selects a standard signal channel and a standard universal interface, and the authentication and encryption module is integrated inside.
6. The secure encryption display system according to claim 1, characterized in that, The authentication and encryption module selects the national cryptographic algorithm SM2 for encryption.
7. The secure encryption display system according to claim 1, wherein The authentication and encryption module selects an anti-physical tampering design, and if physical tampering is triggered, the key of the authentication and encryption module is automatically erased.
8. The secure encryption display system according to claim 1, characterized in that, The hardware of the authentication and encryption module is bound to the software of the signal source.
9. A secure encryption display method, which is implemented by the secure encryption display system according to any one of claims 1 to 8, characterized in that, Comprising: The signal source provides an original image signal; The authentication and encryption module of the encrypted cable authenticates the signal source and encrypts the original image signal; And, the decryption and display module of the display terminal decrypts the encrypted original image signal and displays the picture according to the decrypted original image signal.
10. The secure encryption display method according to claim 9, wherein The encrypted cable sends an authentication request to the signal source and processes the response result sent by the signal source; Send a challenge code request from the encrypted cable to the signal source and process the response result of the challenge code request sent by the signal source; Send a signal transmission request from the encrypted cable to the signal source and process the response result of the signal transmission request sent by the signal source. Among them, the process of processing the response result of the signal transmission request sent by the signal source includes: encrypting the original image signal; processing the encrypted original image signal sent by the encrypted cable by the display terminal. Among them, the process of processing the encrypted original image signal sent by the encrypted cable includes: decrypting the encrypted original image signal and performing screen display according to the decrypted original image signal. Further, if the authentication and encryption module for encrypting the original image signal does not correspond to the decryption and display module for decrypting the encrypted original image signal, the decryption and display module performs algorithm destruction on the original image signal during the decryption process.