Encryption Method for Intelligent Device, Intelligent Device and Computer-Readable Storage Medium

Abstract

The encryption method, intelligent device, and computer-readable storage medium of the intelligent device provided by the present invention. The method includes: receiving a stack generation instruction, generating a second stack according to the stack generation instruction; in response to a probe request frame sent by a networked device, encrypting the second stack to obtain a third ciphertext, and transmitting the third ciphertext to the networked device; obtaining a decryption ciphertext for decrypting the third ciphertext, and sending the decryption ciphertext to the networked device to decrypt the third ciphertext. The present invention strengthens the security protection of the data of the non-networked device by generating a ciphertext by the non-networked device and sending it to the networked device, and then sending the decryption ciphertext to the networked device to decrypt the ciphertext, ensuring that the network protection is effectively and quickly implemented.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent devices, and particularly to an encryption method for intelligent devices, an intelligent device, and a computer-readable storage medium. Background Art

[0002] With the rapid popularization of intelligent devices such as drones, intelligent cars, and smart homes in life, the Internet data generated by various intelligent devices is also increasing rapidly. In the face of the rapid increase in network data, if the network protection is not enhanced, there is a risk that user information will be stolen.

[0003] However, due to the increase in intelligent devices, the network needs to be frequently maintained, and the workload is complicated, and the protection cannot be in place, and various network vulnerabilities still emerge in an endless stream.

[0004] Therefore, the existing technology has defects and needs to be improved and developed. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an encryption method for intelligent devices, an intelligent device, and a computer-readable storage medium in view of the above-mentioned defects of the existing technology, aiming to solve the problem of network security risks existing in intelligent devices in the existing technology.

[0006] The technical solution adopted by the present invention to solve the technical problem is as follows:

[0007] An encryption method for an intelligent device, used for an unconnected intelligent device, includes:

[0008] Receiving a stack generation instruction, and generating a second stack according to the stack generation instruction;

[0009] Responding to a probe request frame sent by a connected device, encrypting the second stack to obtain a third ciphertext, and transmitting the third ciphertext to the connected device;

[0010] Obtaining a decryption ciphertext for decrypting the third ciphertext, and sending the decryption ciphertext to the connected device to decrypt the third ciphertext.

[0011] Further, after receiving the stack generation instruction and generating the second stack according to the stack generation instruction, it further includes:

[0012] Obtaining a user agent string carrying a service set identifier, adding the user agent string into a broadcast frame field, and enabling a broadcast mode.

[0013] Further, the step of responding to a probe request frame sent by a connected device, encrypting the second stack to obtain a third ciphertext and transmitting it to the connected device includes:

[0014] Receive the probe request frame sent from the networked device;

[0015] Encrypt the second stack with a first key to obtain the third ciphertext;

[0016] Transmit the third ciphertext as the payload of the probe response frame to the networked device.

[0017] Further, after receiving the probe request frame sent from the networked device, it further includes:

[0018] Obtain a first stack from a fifth ciphertext carried in the probe request frame, where the fifth ciphertext is obtained by encrypting the first stack generated by the networked device;

[0019] Encrypt the first stack with a second key to obtain a seventh ciphertext;

[0020] Put the seventh ciphertext into the probe response frame field and transmit it to the networked device.

[0021] Further, after transmitting the third ciphertext as the payload of the probe response frame to the networked device, it further includes:

[0022] Receive a second ciphertext sent by the networked device, where the second ciphertext is obtained by encrypting the first stack with a third key;

[0023] Obtain a fourth ciphertext encrypted by the second ciphertext and the second stack according to the second ciphertext.

[0024] Further, the obtaining a decryption ciphertext for decrypting the third ciphertext and sending the decryption ciphertext to the networked device to decrypt the third ciphertext includes:

[0025] Obtain a decryption ciphertext for decrypting the fourth ciphertext, and obtain decryption information according to the decryption ciphertext;

[0026] Send the decryption information to the networked device to decrypt the fourth ciphertext, and return a probe response frame.

[0027] The present invention also provides an intelligent device that is not networked. The intelligent device includes a memory, a processor, and an encryption program of the intelligent device stored on the memory and executable on the processor. When the encryption program of the intelligent device is executed by the processor, the steps of the encryption method of the intelligent device as described above are implemented.

[0028] The present invention also provides a computer-readable storage medium, wherein the computer-readable storage medium stores an encryption program for an intelligent device, and when the encryption program for the intelligent device is executed by a processor, the steps of the encryption method for the intelligent device as described above are implemented.

[0029] The present invention also provides an encryption system for an intelligent device, which includes:

[0030] The intelligent device as described above, which is configured to receive a stack generation instruction, generate a first stack according to the stack generation instruction; in response to a probe request frame sent by a networked device, perform encryption processing on the second stack to obtain a third ciphertext, and transmit the third ciphertext to the networked device; obtain a decrypted ciphertext for decrypting the third ciphertext, and send the decrypted ciphertext to the networked device;

[0031] The networked device is configured to broadcast the probe request frame to the intelligent device, and the payload of the probe request frame is a second ciphertext obtained by encrypting the first stack generated by the networked device; receive the third ciphertext transmitted from the intelligent device; receive the decrypted ciphertext and decrypt the third ciphertext.

[0032] Further, the encryption system further includes:

[0033] The networked device is configured to, when receiving the third ciphertext, encrypt the third ciphertext and the first stack to obtain a fourth ciphertext;

[0034] The intelligent device is configured to, when receiving the second ciphertext, encrypt the second stack and the second ciphertext to obtain the fourth ciphertext.

[0035] Further, the encryption system further includes:

[0036] The networked device is configured to send a probe request frame and use the fourth ciphertext as the payload of the probe request frame; and is configured to receive the decrypted ciphertext sent from the intelligent device and decrypt the fourth ciphertext;

[0037] The intelligent device is configured to receive the probe request frame and obtain a decoded ciphertext for decoding the fourth ciphertext, and send the decrypted ciphertext to the networked device.

[0038] The encryption method for intelligent devices, intelligent devices, and computer-readable storage media provided by the present invention. The method includes: receiving a stack generation instruction, generating a second stack according to the stack generation instruction; in response to a probe request frame sent by a networked device, encrypting the second stack to obtain a third ciphertext, and transmitting the third ciphertext to the networked device; obtaining a decryption ciphertext for decrypting the third ciphertext, and sending the decryption ciphertext to the networked device to decrypt the third ciphertext. By generating a ciphertext by a non-networked device and sending it to a networked device, and then sending the decryption ciphertext to the networked device to decrypt the ciphertext, the present invention strengthens the security protection of the data of the non-networked device, ensuring that network protection is effectively and quickly implemented. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 is a flowchart of a preferred embodiment of the encryption method for intelligent devices in the present invention;

[0040] Figure 2 is a flowchart of step S200 in a preferred embodiment of the encryption method for intelligent devices of the present invention;

[0041] Figure 3 is a flowchart after step S210 in a preferred embodiment of the encryption method for intelligent devices of the present invention;

[0042] Figure 4 is a flowchart after step S222 in a preferred embodiment of the encryption method for intelligent devices of the present invention;

[0043] Figure 5 is a flowchart of step S300 in a preferred embodiment of the encryption method for intelligent devices of the present invention;

[0044] Figure 6 is a functional principle block diagram of a preferred embodiment of the intelligent device in the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0045] To make the objectives, technical solutions, and advantages of the present invention clearer and more definite, the following further describes the present invention in detail with reference to the accompanying drawings and by way of examples. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0046] The encryption method for intelligent devices mentioned in the present invention is used to encrypt intelligent devices, thereby strengthening the network protection of intelligent devices, and the encryption method is simple and easy to operate. It can be understood that the intelligent devices described in the present invention include, but are not limited to, a series of intelligent devices such as unmanned aerial vehicles, cameras, intelligent cars, intelligent TVs, etc. For the purpose of explaining the present invention, only a TV is used as an intelligent device below, but it is not used to limit the present invention.

[0047] Specifically, the encryption method of the intelligent device described in the present invention is based on multiple intelligent devices, and the intelligent device also supports AP and STA.

[0048] Please refer to Figure 1 , Figure 1 which is a flowchart of an encryption method for an intelligent device in the present invention. As Figure 1 shown, an encryption method for an intelligent device described in an embodiment of the present invention is applied to an unconnected device, and includes the following steps:

[0049] S100. Receive a stack generation instruction, and generate a second stack according to the stack generation instruction.

[0050] Specifically, when a user operates on a smart TV, the smart TV will automatically generate a stack randomly. Here, the stack generated by the smart TV is referred to as the second stack.

[0051] S200. In response to a probe request frame sent by a connected device, encrypt the second stack to obtain a third ciphertext, and transmit the third ciphertext to the connected device.

[0052] Specifically, when the smart TV receives a probe request frame sent by a connected device, it will reply to the probe request frame by sending the third ciphertext of the payload. Among them, the third ciphertext is the ciphertext obtained by encrypting the second stack and a key, and the encryption algorithm is aes256 (CBC mode).

[0053] S300. Obtain a decryption ciphertext for decrypting the third ciphertext, and send the decryption ciphertext to the connected device to decrypt the third ciphertext.

[0054] Specifically, the user operates on the smart TV, and then inputs the decryption ciphertext in the smart TV. The decryption ciphertext is used for decrypting the third ciphertext. After the connected device receives the decryption ciphertext, it can decrypt the third ciphertext received from the smart TV before, so as to realize that when data is exchanged between the connected device and the smart TV, the data is encrypted, and the encryption and decryption are performed on different devices, which improves the effective protection and security of the data.

[0055] In a specific embodiment, after step S100, it further includes:

[0056] S110. Obtain a user agent string carrying a service set identifier, add the user agent string into a broadcast frame field, and enable the broadcast mode.

[0057] Specifically, a first stack can be randomly generated by the connected device first, and then a second stack is generated by the smart TV. After that, the smart TV enters the automatic loop broadcast mode. When broadcasting, by adding a custom IE field, also known as the user agent string, to the broadcast frame field, the user agent string is carried in the broadcast frame. The content carried by the user agent string includes the service set identifier (referred to as ssid), etc. The user agent string is encrypted by the preset first ciphertext and the first stack through AES encryption processing.

[0058] In a specific embodiment, as Figure 2 shown, step S200 includes:

[0059] S210. Receive the probe request frame sent from the connected device.

[0060] Specifically, when the connected device broadcasts a probe request frame, the smart TV responds if it receives the probe request frame.

[0061] Further, when the connected device broadcasts a probe request frame, the payload of the probe request frame is a second ciphertext, where the second ciphertext is the ciphertext obtained by encrypting the first stack with a key, and the encryption algorithm is aes256 (CBC mode). And the beacon frame carries a user agent string, and the user agent string carries a fifth ciphertext, where the fifth ciphertext is obtained by encrypting the first stack with a preset fixed key.

[0062] S221. Encrypt the second stack with the first key to obtain the third ciphertext.

[0063] Specifically, after the smart TV receives the probe request frame, it processes the second stack with a key to obtain the third ciphertext, and the encryption algorithm is aes256 (CBC mode).

[0064] S222. Transmit the third ciphertext as the payload of the probe response frame to the connected device.

[0065] Specifically, the smart TV replies to the connected device with the third ciphertext as the payload.

[0066] Further, after the smart TV receives the probe request frame, it saves the fifth ciphertext and encrypts the fifth ciphertext with the second stack to obtain the sixth ciphertext.

[0067] In a specific embodiment, as Figure 3 shown, after step S210, it further includes:

[0068] S231. Obtain the first stack from the fifth ciphertext carried in the probe request frame, and the fifth ciphertext is obtained by encrypting the first stack generated by the connected device.

[0069] S232. Encrypt the first stack with the second key to obtain the seventh ciphertext.

[0070] S233. Put the seventh ciphertext into the probe response frame field and transmit it to the connected device.

[0071] Specifically, the smart TV encrypts the first stack with a pre-set fixed key to obtain the seventh ciphertext, then puts the seventh ciphertext into the IE field of the probe response frame, and transmits it to the connected device.

[0072] In a specific embodiment, as Figure 4 shown, after step S222, it further includes:

[0073] S241. Receive the second ciphertext sent by the connected device, where the second ciphertext is obtained by encrypting the first stack with the third key.

[0074] S242. Obtain the fourth ciphertext encrypted by the second ciphertext and the second stack according to the second ciphertext.

[0075] Specifically, when the connected device receives the third ciphertext, it can encrypt the third ciphertext with the first stack to obtain the fourth ciphertext, and the encryption algorithm is aes256 (CBC mode).

[0076] When the smart TV receives the second ciphertext, it can encrypt the second ciphertext with the second stack to obtain the fourth ciphertext, and the encryption algorithm is aes256 (CBC mode).

[0077] Among them, the fourth ciphertext obtained by the smart TV and the connected device is the same.

[0078] In a specific embodiment, as Figure 5 shown, step S300 includes:

[0079] S310. Obtain the decryption ciphertext for decrypting the fourth ciphertext, and obtain the decryption information according to the decryption ciphertext.

[0080] Specifically, the connected device sends a probe request frame and creates a user agent string, where the user agent string carries wifi SSID, KEY, bindcode, etc. Then, it encrypts the user agent string with the seventh ciphertext and the third stack by AES, adds the encrypted user agent string to the probe request frame field, and transmits it to the smart TV.

[0081] Meanwhile, the fourth ciphertext is transmitted to the connected device as the payload, where the payload is the information (such as SSID, password, etc.) encrypted by the fourth ciphertext using aes256 (CBC mode).

[0082] S320. Send the decryption information to the connected device to decrypt the fourth ciphertext and return a probe response frame.

[0083] Specifically, the user operates on the smart TV to obtain the decrypted ciphertext, and then obtains decryption information such as the SSID and password. After that, the smart TV sends the decryption information to the connected device, and returns a probe response frame, where the payload of the probe response frame is the fourth ciphertext encrypted by ack.

[0084] Further, as Figure 6 shown, based on the above encryption method of the intelligent device, the present invention also correspondingly provides an intelligent device, which is not connected to the network, and the intelligent device includes a processor 10, a memory 20 and a display 30. Figure 6 Only some components of the intelligent device are shown, but it should be understood that it is not required to implement all the shown components, and more or fewer components can be implemented alternatively.

[0085] In some embodiments, the memory 20 may be an internal storage unit of the intelligent device, such as the hard disk or memory of the intelligent device. In other embodiments, the memory 20 may also be an external storage device of the intelligent device, such as a plug-in hard disk equipped on the intelligent device, a Smart Media Card (SMC), a Secure Digital (SD) card, a Flash Card, etc. Further, the memory 20 may also include both the internal storage unit and the external storage device of the intelligent device. The memory 20 is used to store the application software installed on the intelligent device and various types of data, such as the program code installed on the intelligent device, etc. The memory 20 may also be used to temporarily store the data that has been output or will be output. In one embodiment, an encryption program 40 of the intelligent device is stored on the memory 20, and the encryption program 40 of the intelligent device can be executed by the processor 10, so as to implement the encryption method of the intelligent device in this application.

[0086] In some embodiments, the processor 10 may be a central processing unit (CPU), a microprocessor or other data processing chips, and is used to run the program code stored in the memory 20 or process data, such as executing the encryption method of the intelligent device, etc.

[0087] The display 30 can be an LED display, a liquid crystal display, a touch liquid crystal display, an OLED (Organic Light-Emitting Diode) touch device, etc. in some embodiments. The display 30 is used to display information of the smart device and to display a visual user interface. Components 10-30 of the smart device communicate with each other via a system bus.

[0088] In one embodiment, when the processor 10 executes the encryption program 40 of the smart device in the memory 20, the following steps are implemented:

[0089] Receive a stack generation instruction, and generate a second stack according to the stack generation instruction;

[0090] In response to a probe request frame sent by a networked device, encrypt the second stack to obtain a third ciphertext, and transmit the third ciphertext to the networked device;

[0091] Obtain a decryption ciphertext for decrypting the third ciphertext, and send the decryption ciphertext to the networked device to decrypt the third ciphertext.

[0092] Further, after receiving the stack generation instruction and generating a second stack according to the stack generation instruction, it further includes:

[0093] Obtain a user agent string carrying a service set identifier, add the user agent string to a broadcast frame field, and enable broadcast mode.

[0094] Further, the step of in response to a probe request frame sent by a networked device, encrypting the second stack to obtain a third ciphertext and transmitting it to the networked device includes:

[0095] Receive the probe request frame sent by the networked device;

[0096] Encrypt the second stack with a first key to obtain the third ciphertext;

[0097] Transmit the third ciphertext as the payload of a probe response frame to the networked device.

[0098] Further, after receiving the probe request frame sent by the networked device, it further includes:

[0099] Obtain a first stack from a fifth ciphertext carried in the probe request frame, where the fifth ciphertext is obtained by encrypting the first stack generated by the networked device;

[0100] Encrypt the first stack with a second key to obtain a seventh ciphertext;

[0101] Put the seventh ciphertext into the probe response frame field and transmit it to the connected device.

[0102] Further, after transmitting the third ciphertext as the payload of the probe response frame to the connected device, it further includes:

[0103] Receive the second ciphertext sent by the connected device, where the second ciphertext is obtained by encrypting the first stack with a third key;

[0104] Obtain a fourth ciphertext encrypted by the second ciphertext and the second stack according to the second ciphertext.

[0105] Further, the obtaining a decryption ciphertext for decrypting the third ciphertext and sending the decryption ciphertext to the connected device to decrypt the third ciphertext includes:

[0106] Obtain a decryption ciphertext for decrypting the fourth ciphertext, and obtain decryption information according to the decryption ciphertext;

[0107] Send the decryption information to the connected device to decrypt the fourth ciphertext and return a probe response frame.

[0108] The present invention also provides a computer-readable storage medium, where the computer-readable storage medium stores an encryption program for a smart device, and when the encryption program for the smart device is executed by a processor, the steps of the encryption method for the smart device as described above are implemented.

[0109] The present invention also provides an encryption system for a smart device, including:

[0110] The smart device as described above, which is used to receive a stack generation instruction, generate a first stack according to the stack generation instruction; in response to a probe request frame sent by a connected device, encrypt the second stack to obtain a third ciphertext, and transmit the third ciphertext to the connected device; obtain a decryption ciphertext for decrypting the third ciphertext, and send the decryption ciphertext to the connected device;

[0111] A connected device, which is used to broadcast the probe request frame to the smart device, and the payload of the probe request frame is a second ciphertext obtained by encrypting the first stack generated by the connected device; receive the third ciphertext transmitted from the smart device; receive the decryption ciphertext and decrypt the third ciphertext.

[0112] In a specific embodiment, the encryption system further includes:

[0113] The connected device is configured to encrypt the third ciphertext and the first stack to obtain a fourth ciphertext when receiving the third ciphertext;

[0114] The intelligent device is configured to encrypt the second stack and the second ciphertext to obtain the fourth ciphertext when receiving the second ciphertext.

[0115] In a specific embodiment, the encryption system further includes:

[0116] The connected device is configured to send a probe request frame and use the fourth ciphertext as the payload of the probe request frame; and is configured to receive the decrypted ciphertext sent from the intelligent device and decrypt the fourth ciphertext;

[0117] The intelligent device is configured to receive the probe request frame, obtain a decoded ciphertext for decoding the fourth ciphertext, and send the decrypted ciphertext to the connected device.

[0118] Further, the intelligent device encrypts the first stack using a pre-set fixed key to obtain a seventh ciphertext, then places the seventh ciphertext in the IE field of the probe response frame and transmits it to the connected device;

[0119] The connected device sends a probe request frame, creates a user agent string, then performs AES encryption on the user agent string using the seventh ciphertext and the third stack, adds the encrypted user agent string to the probe request frame field, and transmits it to the smart TV.

[0120] Certainly, those of ordinary skill in the art can understand that all or part of the processes of implementing the above method embodiments can be completed by instructing relevant hardware (such as a processor, a controller, etc.) through a computer program. The program can be stored in a computer-readable storage medium that can be read by a computer. When the program is executed, it can include the processes of the above method embodiments. The computer-readable storage medium can be a memory, a magnetic disk, an optical disc, etc.

[0121] It should be understood that the application of the present invention is not limited to the above examples. For those of ordinary skill in the art, improvements or transformations can be made according to the above description. All such improvements and transformations should fall within the protection scope of the appended claims of the present invention.

Claims

1. A smart device encryption method for a non-networked smart device, characterized in that: include: receiving a stack generation instruction, and generating a second stack according to the stack generation instruction; In response to a probe request frame sent by a networked device, encrypting the second stack to obtain a third ciphertext, and transmitting the third ciphertext to the networked device; wherein the method includes: receiving the probe request frame sent from the networked device; the probe request frame carries a user agent string, and the user agent string carries a fifth ciphertext; Obtain a first stack from a fifth ciphertext carried in the probe request frame, wherein the fifth ciphertext is obtained by encrypting the first stack generated by the networked device. encrypting the first stack using a second key to obtain a seventh ciphertext; Putting the seventh ciphertext into a probe response frame field and transmitting the result to the networked device; encrypting the second stack using the first key to obtain the third ciphertext; transmitting the third ciphertext as a payload of a probe response frame to the networked device; A decrypted ciphertext for decrypting the third ciphertext is obtained, and the decrypted ciphertext is sent to the networked device to decrypt the third ciphertext.

2. The encryption method for a smart device according to claim 1, wherein: The method further comprises: receiving a stack generation instruction, and generating a second stack according to the stack generation instruction; and then: Obtain a user agent string carrying a service set identifier, add the user agent string into a broadcast frame field, and enable broadcast mode.

3. The encryption method for a smart device according to claim 1, wherein: The method further comprises: transmitting the third ciphertext as a payload of a probe response frame to the networked device; receiving a second ciphertext sent by the networked device, where the second ciphertext is obtained by encrypting the first stack using a third key; A fourth ciphertext obtained by encrypting the second ciphertext and the second stack is obtained according to the second ciphertext.

4. The encryption method for a smart device according to claim 3, wherein: The obtaining of a decrypted ciphertext for decrypting the third ciphertext and sending the decrypted ciphertext to the networked device to decrypt the third ciphertext includes: Obtaining a decrypted ciphertext for decrypting the fourth ciphertext, and obtaining decrypted information according to the decrypted ciphertext; The decryption information is sent to the networked device to decrypt the fourth ciphertext, and a probe response frame is returned.

5. A smart device that is not connected to the Internet, characterized in that: The smart device includes: a memory, a processor, and an encryption program of the smart device stored in the memory and executable on the processor. When the encryption program of the smart device is executed by the processor, the steps of the encryption method of the smart device according to any one of claims 1 to 4 are implemented.

6. A computer-readable storage medium, characterized in that The computer-readable storage medium stores an encryption program for a smart device, and when the encryption program for the smart device is executed by a processor, the steps of the encryption method for a smart device according to any one of claims 1 to 4 are implemented.

7. An encryption system for a smart device, characterized in that: include: The smart device according to claim 5, configured to receive a stack generation instruction and generate a second stack according to the stack generation instruction; In response to a probe request frame sent by a networked device, encrypting the second stack to obtain a third ciphertext, and transmitting the third ciphertext to the networked device; obtaining a decrypted ciphertext for decrypting the third ciphertext, and sending the decrypted ciphertext to the networked device; The networked device is configured to broadcast the probe request frame to the smart device, wherein the payload of the probe request frame is a second ciphertext obtained by encrypting the first stack generated by the networked device; receive the third ciphertext transmitted from the smart device; receive the decrypted ciphertext and decrypt the third ciphertext.

8. The encryption system for smart devices according to claim 7, characterized in that: The encryption system further comprises: The networked device is configured to, upon receiving the third ciphertext, encrypt the third ciphertext and the first stack to obtain a fourth ciphertext; The smart device is configured to, upon receiving the second ciphertext, encrypt the second stack and the second ciphertext to obtain the fourth ciphertext.

9. The encryption system for smart devices according to claim 8, characterized in that: The encryption system further comprises: The networked device is configured to send a probe request frame and use the fourth ciphertext as a payload of the probe request frame; and is configured to receive a decrypted ciphertext sent from the smart device and decrypt the fourth ciphertext; The smart device is configured to receive the probe request frame and obtain a decoded ciphertext for decoding the fourth ciphertext, and send the decrypted ciphertext to the networked device.

Images