CN113761542A - Wireless input device and information transmission method thereof - Google Patents

Wireless input device and information transmission method thereof Download PDF

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Publication number
CN113761542A
CN113761542A CN202010419461.8A CN202010419461A CN113761542A CN 113761542 A CN113761542 A CN 113761542A CN 202010419461 A CN202010419461 A CN 202010419461A CN 113761542 A CN113761542 A CN 113761542A
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CN
China
Prior art keywords
message
partial key
key
information
input device
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Pending
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CN202010419461.8A
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Chinese (zh)
Inventor
郑焕勳
简志峰
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Primax Electronics Ltd
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Primax Electronics Ltd
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Priority to CN202010419461.8A priority Critical patent/CN113761542A/en
Publication of CN113761542A publication Critical patent/CN113761542A/en
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/60—Protecting data
    • G06F21/602—Providing cryptographic facilities or services
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/60—Protecting data
    • G06F21/606—Protecting data by securing the transmission between two devices or processes
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
    • G06F3/03543—Mice or pucks
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/038—Control and interface arrangements therefor, e.g. drivers or device-embedded control circuitry
    • G06F3/0383—Signal control means within the pointing device

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Human Computer Interaction (AREA)
  • Bioethics (AREA)
  • General Health & Medical Sciences (AREA)
  • Computer Hardware Design (AREA)
  • Computer Security & Cryptography (AREA)
  • Software Systems (AREA)
  • Position Input By Displaying (AREA)
  • Input From Keyboards Or The Like (AREA)

Abstract

The invention provides a wireless input device and an information transmission method thereof, wherein a wireless mouse device comprises an information receiving end and an information output end, the information receiving end is used for generating a first part of key, the information output end is used for receiving the first part of key and generating a second part of key, the information output end converts original information into encrypted information by at least utilizing the first part of key, the second part of key and an encryption algorithm, the information output end is also used for transmitting the encrypted information and the second part of key to a wireless receiver, and the wireless receiver restores the encrypted information into the original information by at least utilizing the first part of key, the second part of key and the encryption algorithm.

Description

Wireless input device and information transmission method thereof
Technical Field
The present invention relates to the field of wireless transmission, and in particular, to a wireless input device and an information transmission method.
Background
Common input devices for computer peripherals include a mouse device, a keyboard device, and a trackball device, wherein the mouse device can be held by a palm of a user to control the movement of a mouse cursor, and can perform a click or execution function on an image on a computer screen according to the manipulation of fingers of the user, so that considerable attention is paid. Furthermore, the mouse device can be classified into a wired mouse device and a wireless mouse device, and the wireless mouse device has advantages of reducing the cost of cable (connecting wire) consumption, and reducing the storage space and the operating distance compared to the wired mouse device, so the wireless mouse device has gradually replaced the trend of the wired mouse device.
Please refer to fig. 1, which is a conceptual diagram illustrating a conventional wireless mouse device connected to a host computer through signals. The wireless mouse device 1 includes a mouse body 11 and a wireless receiver 12, the mouse body 11 can be held by the palm of the user for moving, scrolling or clicking, and generates a control signal S1 with information according to the operation of the user, and the wireless receiver 12 can be plugged into the connection end 21 of the computer host 2 and receives the control signal S1 from the mouse body 11 in a wireless communication manner, so that the computer host 2 can wirelessly communicate with the mouse body 11 through the wireless receiver 12 and obtain the control information from the mouse body 11 to further perform corresponding operations, such as moving the cursor 22, scrolling the window scroll 231, or zooming in/out/closing the window 23.
However, the conventional wireless mouse device 1 and the computer host 2 are not protected by any information security, so that the control signal S1 is easily monitored and interpreted by a malicious person during the transmission of the computer host 2 from the wireless mouse device 1, and the information in the control signal S1 is obtained, so as to achieve the purpose of controlling the computer host 2 and stealing other important information. Therefore, the conventional wireless input device and information transmission method have room for improvement.
Disclosure of Invention
A first objective of the present invention is to provide a wireless input device with an encryption key formed by a first partial key at a message receiving end and a second partial key at a message output end.
A second objective of the present invention is to provide an information transmission method applied to the wireless input device.
In a preferred embodiment, the present invention provides a wireless input device, comprising:
an information receiving end for generating a first partial key; and
an information output end, for receiving the first partial key and generating a second partial key, and the information output end at least utilizes the first partial key, the second partial key and an encryption algorithm to convert an original message into an encrypted message;
the information output end is further used for transmitting the encrypted information and the second partial key to the wireless receiver, and the wireless receiver restores the encrypted information to the original information by using at least the first partial key, the second partial key and the encryption algorithm.
In a preferred embodiment, the present invention also provides an information transmission method applied to a wireless input device, wherein the wireless input device includes an information receiving end and an information output end, and the information transmission method includes:
(a) generating a first partial key at the message receiving end;
(b) transmitting the first partial key to the message output end;
(c) generating a second partial key at the message output end;
(d) converting an original message into an encrypted message by using at least the first partial key, the second partial key and an encryption algorithm;
(e) transmitting the encrypted message and the second partial key to the message receiving end; and
(f) the encrypted message is restored to the original message by at least using the first partial key, the second partial key and the encryption algorithm.
Drawings
FIG. 1: is a conceptual diagram of the signal connection of the conventional wireless mouse device to the host computer.
FIG. 2: is a schematic diagram of a preferred concept of the wireless input device signal connection to the host computer according to the present invention.
FIG. 3A: a conceptual diagram of the operation process of the wireless input device and the host computer shown in fig. 2 according to a preferred embodiment is shown.
FIG. 3B: a conceptual diagram of the operation process of the wireless input device and the host computer shown in fig. 2 according to a preferred embodiment is shown.
FIG. 3C: a conceptual diagram of the operation process of the wireless input device and the host computer shown in fig. 2 according to a preferred embodiment is shown.
FIG. 4: is a preferred block flow diagram of the message transmission method of the present invention.
Detailed Description
Embodiments of the invention will be further explained by the following in conjunction with the associated drawings. Wherever possible, the same reference numbers will be used throughout the drawings and the description to refer to the same or like parts. In the drawings, the shape and thickness may be exaggerated for simplicity and convenience. It is to be understood that elements not specifically shown in the drawings or described in the specification are of a type well known to those of ordinary skill in the art. Many variations and modifications may be made by one of ordinary skill in the art in light of the teachings of the present invention.
Please refer to fig. 2, which is a schematic diagram illustrating a preferred concept of the wireless input device signal connected to a computer host according to the present invention. In the preferred embodiment, the wireless input device is exemplified by a wireless mouse device 3, which includes a mouse body 31 and a wireless receiver 32, wherein the mouse body 31 can be held by a palm of a user for operation, for example, the user can move the mouse body 31, scroll a wheel 311 of the mouse body 31 or click a button 312 of the mouse body 31, and the wireless receiver 32 can be plugged into a connection terminal 41 of the computer host 4, wherein when the user operates the mouse body 31, the mouse body 31 can wirelessly communicate with the wireless receiver 32 plugged into the computer host 4, so that the computer host 4 executes corresponding operations, for example, moving a cursor 42, scrolling a window scroll 431, or enlarging/reducing/closing a window 43.
In the preferred embodiment, the host computer 4 can be, for example but not limited to, a desktop computer, a notebook computer, a tablet computer … … or other software-executable or programmable logic operation device, and the connection terminal 41 of the host computer 4 is a Universal Serial Bus (USB) terminal, and the wireless receiver 32 is a USB Dongle (USB Dongle) capable of being plugged into the USB terminal and communicates with the mouse body 31 by using a 2.4G radio frequency technology. However, the above embodiments are only examples, and the form of the host computer 4 and the connection terminal 41 thereof, the form of the wireless receiver 32 and the communication protocol between the mouse body 31 and the wireless receiver are not limited to the above embodiments.
When the user uses the wireless mouse device 3 for the first time, the mouse body 31 and the wireless receiver 32 need to complete pairing before wireless communication related to the control computer host 4 is performed, and during the communication pairing process between the mouse body 31 and the wireless receiver 32, related System information, such as Product Identification (PID), Product name (Product String), Serial Number (Serial Number), custom protocol or System Address (System Address) … …, is exchanged between the mouse body 31 and the wireless receiver 32, and the specific implementation manner related to the communication pairing between the mouse body 31 and the wireless receiver 32 is known by those skilled in the art and will not be described herein again.
Please refer to fig. 3A to 3C, which are schematic diagrams illustrating operation processes of the wireless input device and the host computer shown in fig. 2 according to a preferred embodiment. Here, the mouse body 31 and the wireless receiver 32 will be described as an information output terminal and an information receiving terminal, respectively. First, the wireless receiver 32 generates the first partial key 51 and transmits it to the mouse body 31, and during the transmission, the wireless receiver 32 can also simultaneously transmit a Cyclic Redundancy Check (CRC) 61 for ensuring that the first partial key 51 can be correctly transmitted, as shown in fig. 3A.
The first partial key 51 and the crc 61 may be transmitted to the mouse body 31 in a plain text or in a cipher mode to the mouse body 31, and the wireless receiver 32 may perform a non-linear operation on the first partial key 51 and the crc 61 to complete an encoding (encode) and then transmit the encoded encoding to the mouse body 31. In contrast, if the first partial key 51 and the crc 61 received by the mouse body 31 are transmitted in a cipher manner, the mouse body 31 first performs an inverse nonlinear operation on the first partial key 51 and the crc 61 for decoding (decode), as shown in fig. 3B.
Furthermore, the mouse body 31 generates the second partial key 52, and when the user holds the mouse body 31 with the palm to perform the operation, the mouse body 31 generates the original information 71 for controlling the computer host 4 and other purposes; the mouse body 31 converts the original information 71 into the encrypted information 72 by using at least the received first partial key 51, the generated second partial key 52, and an encryption algorithm, as shown in fig. 3B.
Further, in the preferred embodiment, the Encryption algorithm is Advanced Encryption Standard (AES), and the first partial key 51 and the second partial key 52 form the Encryption key 53 for encrypting the original information through the Encryption algorithm. Preferably, but not limited thereto, the original message 71 further includes a cyclic redundancy check code 711 for ensuring that the original message 71 can be correctly transmitted, and the mouse body 31 can further utilize a non-linear function to perform a non-linear operation on the encryption key 53 and the original message 71 to increase the difficulty of breaking the encrypted message.
Then, the mouse body 31 transmits the encrypted information 72 and the second partial key 52 to the wireless receiver 32, and the wireless receiver 32 utilizes at least the generated first partial key 51, the received second partial key 52 and the same encryption algorithm (such as advanced encryption standard) to restore the encrypted information 72 to the original information 71, as shown in fig. 3C. Further, in the preferred embodiment, after the wireless receiver 32 receives the second partial key 52, the wireless receiver 32 first obtains the encryption key 53 formed by the first partial key 51 and the second partial key 52 through an encryption algorithm (e.g., advanced encryption standard), and then decrypts the encrypted message 72 by using the encryption key 53. If the encryption key 53 and the original message 71 are non-linearly operated during the encryption process of the mouse body 31, the following wireless receiver 32 needs to perform a reverse non-linear operation during the decryption process of the encrypted message 72.
In addition, during the process of transmitting the second partial key 52 to the wireless receiver 32 by the mouse body 31, the wireless receiver 32 can also simultaneously transmit the cyclic redundancy check code 62 for ensuring that the second partial key 52 can be correctly transmitted. The second partial key 52 and the crc 62 can be transmitted to the wireless receiver 32 in a plain text, or can be transmitted to the wireless receiver 32 in an encrypted manner, for example, the mouse body 31 performs a nonlinear operation on the second partial key 52 and the crc 62 to complete the encoding, and then transmits the encoded result to the wireless receiver 32. In contrast, if the second partial key 52 and the crc 62 received by the subsequent wireless receiver 32 are cryptographically transmitted, the wireless receiver 32 first performs an inverse nonlinear operation on the second partial key 52 and the crc 62 for decoding.
Finally, the host computer 4 can obtain the original information 71 via the wireless receiver 32 to perform the corresponding operation. In summary, fig. 4 illustrates a preferred block flow diagram of the information transmission method of the present invention. The information transmission method comprises the following steps:
step P1, generating a first partial key at the message receiver;
step P2, transmitting the first partial key to the message output terminal;
step P3, generating a second partial key at the message output terminal;
step P4, converting an original message into an encrypted message by using at least the first partial key, the second partial key and an encryption algorithm;
step P5, transmitting the encrypted message and the second partial key to the message receiver; and
in step P6, the encrypted message is restored to the original message by using at least the first partial key, the second partial key and the encryption algorithm.
Preferably, but not limited thereto, in the step P1, the first partial key may be generated periodically or aperiodically, that is, the first partial key is updated periodically or aperiodically, and the information receiving end actively transmits the updated first partial key to the information output end. In addition, in the steps P1 and P3, the first partial key and the second partial key may be generated randomly or regularly, wherein if the encryption key formed by the encryption algorithm in the step P4 does not conform to the required length in practical applications, a fixed value, such as the System Address (System Address) or other fixed value, may be additionally refilled.
As can be seen from the above description, when the user holds the mouse body 31 with the palm to operate, since the mouse body 31 encrypts the information to be transmitted to the wireless receiver 32, the monitoring and the decryption by the malicious people during the communication between the mouse body 31 and the wireless receiver 32 can be avoided, so that the mouse body 31 and the wireless receiver 32 have sufficient information security protection.
In addition, another important advantage of the present disclosure is that the information receiving end and the information output end can generate the first partial key and the second partial key respectively, and the encryption key for encrypting or decrypting the information is formed by the first partial key and the second partial key, and the complete encryption key is not transmitted between the mouse body 31 and the wireless receiver 32, thereby reducing the length of the transmission packet and simplifying the complexity of encrypting the transmission information, so that the present disclosure can be more applied to the radio competition device requiring both the Report Rate (Report Rate) and the information security.
It should be understood that the above description is only exemplary, and those skilled in the art can make any equivalent design changes according to the actual application requirements. For example, although the mouse body and the wireless receiver are respectively used as the information output terminal and the information receiving terminal in the above embodiments, it may be alternatively designed that the mouse body and the wireless receiver are respectively used as the information receiving terminal and the information output terminal, that is, when the wireless receiver intends to transmit information to the mouse body, the method shown in fig. 4 may also be used to transmit information. For example, although the wireless input device in the above embodiments is described as a wireless mouse device, the wireless input device may be modified to a wireless keyboard device, and the device body thereof may be a keyboard body that can wirelessly communicate with the wireless receiver by using the method shown in fig. 4.
The above description is only a preferred embodiment of the present invention and is not intended to limit the claims of the present invention, so that other equivalent changes or modifications without departing from the concept disclosed in the present invention should be included in the claims of the present disclosure.

Claims (20)

1. A wireless input device, comprising:
an information receiving end for generating a first partial key; and
an information output end, for receiving the first partial key and generating a second partial key, and the information output end at least utilizes the first partial key, the second partial key and an encryption algorithm to convert an original message into an encrypted message;
the information output end is also used for transmitting the encrypted information and the second part of the key to a wireless receiver, and the wireless receiver at least utilizes the first part of the key, the second part of the key and the encryption algorithm to restore the encrypted information to the original information.
2. The wireless input device as claimed in claim 1, wherein the message receiver and the message output terminal are respectively a wireless receiver and a device body, the device body generates the original message in response to a user operation, and the wireless receiver is connected to a computer host for the computer host to perform corresponding operations according to the restored original message.
3. The wireless input device as in claim 2, wherein the device body is a mouse body or a keyboard body.
4. The wireless input device of claim 1 wherein the encryption algorithm is an advanced encryption standard.
5. The wireless input device of claim 1, wherein the first partial key and the second partial key form an encryption key via the encryption algorithm.
6. The wireless input device as in claim 5, wherein the message output further performs a non-linear operation on the encryption key and the original message by a non-linear function to convert the original message into the encrypted message.
7. The wireless input device as in claim 6, wherein the message receiver performs the non-linear operation on the encryption key and the encrypted message by using the non-linear function to restore the encrypted message to the original message.
8. The wireless input device of claim 1, wherein the original information further comprises a cyclic redundancy check code.
9. The wireless input device as in claim 1, wherein the message receiver updates the first partial key periodically or aperiodically and transmits the updated first partial key to the message output.
10. The wireless input device as recited in claim 1, wherein the first partial key, the second partial key and the encrypted message are transmitted between the message receiver and the message output via a 2.4G radio frequency technology.
11. An information transmission method is applied to a wireless input device, the wireless input device comprises an information receiving end and an information output end, the information transmission method comprises the following steps:
(a) generating a first partial key at the message receiving end;
(b) transmitting the first partial key to the message output end;
(c) generating a second partial key at the message output end;
(d) converting an original message into an encrypted message by using at least the first partial key, the second partial key and an encryption algorithm;
(e) transmitting the encrypted message and the second partial key to the message receiving end; and
(f) the encrypted message is restored to the original message by at least using the first partial key, the second partial key and the encryption algorithm.
12. The method of claim 11 wherein the encryption algorithm is an advanced encryption standard.
13. The method according to claim 11, wherein in the step (d), the first partial key and the second partial key are formed into an encryption key by the encryption algorithm.
14. The information transmission method as claimed in claim 13, wherein the step (d) comprises:
a nonlinear function is used to perform a nonlinear operation on the encryption key and the original message to convert the original message into the encrypted message.
15. The information transmission method as claimed in claim 14, wherein the step (f) comprises:
and performing the nonlinear operation on the encryption key and the encrypted information by using the nonlinear function to restore the encrypted information to the original information.
16. The method according to claim 11, wherein in step (b), the first partial key is transmitted to the message output in a plain text or an encrypted form.
17. The method according to claim 11, wherein in step (e), the second partial key is transmitted to the message receiver in a plain text or an encrypted form.
18. The information transmission method as claimed in claim 11, wherein the step (a) comprises:
the first partial key is generated periodically or aperiodically.
19. The method of claim 11, wherein the original information further comprises a cyclic redundancy check code.
20. The method as claimed in claim 11, wherein the message receiver and the message output are a wireless receiver and a device body, respectively, and the device body generates the original message in response to a user operation, and the wireless receiver is connected to a computer host for the computer host to perform corresponding operations according to the restored original message.
CN202010419461.8A 2020-05-18 2020-05-18 Wireless input device and information transmission method thereof Pending CN113761542A (en)

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CN202010419461.8A CN113761542A (en) 2020-05-18 2020-05-18 Wireless input device and information transmission method thereof

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Application Number Priority Date Filing Date Title
CN202010419461.8A CN113761542A (en) 2020-05-18 2020-05-18 Wireless input device and information transmission method thereof

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CN113761542A true CN113761542A (en) 2021-12-07

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100080387A1 (en) * 2008-09-28 2010-04-01 Lenovo (Beijing) Limited Portable memory and a method for encrypting the same
CN107040536A (en) * 2017-04-10 2017-08-11 北京德威特继保自动化科技股份有限公司 Data ciphering method, device and system
CN107122064A (en) * 2016-02-25 2017-09-01 鸿富锦精密工业（深圳）有限公司 Mouse module and mouse signal transmission method
CN110572261A (en) * 2019-08-23 2019-12-13 杭州来布科技有限公司 data encryption transmission method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100080387A1 (en) * 2008-09-28 2010-04-01 Lenovo (Beijing) Limited Portable memory and a method for encrypting the same
CN107122064A (en) * 2016-02-25 2017-09-01 鸿富锦精密工业（深圳）有限公司 Mouse module and mouse signal transmission method
CN107040536A (en) * 2017-04-10 2017-08-11 北京德威特继保自动化科技股份有限公司 Data ciphering method, device and system
CN110572261A (en) * 2019-08-23 2019-12-13 杭州来布科技有限公司 data encryption transmission method

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Application publication date: 20211207