Keyless entry system

Abstract

The invention discloses a keyless entry system which is characterized in that a carrying device is provided with a carrying transmitting part and a carrying control part, the carrying control part controls the carrying transmitting part to transmit an unlocking signal, the unlocking signal is at least composed of a matching section and a verification section, and the carrying control part enables the verification section to change according to a first rule when the unlocking signal is transmitted every time; the unlocking equipment is provided with an unlocking receiving part, an unlocking verification part and an unlocking storage part, the unlocking receiving part receives an unlocking signal, and the unlocking signal is verified by the verification part; after the verification succeeds, the unlocking storage part stores the verification segment as a reference segment; and the unlocking verification part firstly verifies the matching section, and after verification succeeds, the corresponding verification section and the reference section are compared and verified. And safe and reliable unlocking operation is realized through comparison between verification and a reference section and application of a first rule.

Description

Technical Field

[0001] The present invention relates to the field of electronic technology, and more particularly to a keyless entry system. Background Art

[0002] Keyless Entry is a modern vehicle or building access system that allows users to enter and start a vehicle or enter a building without using a traditional physical key.

[0003] In the prior art, although the keyless entry system adopts advanced encryption technology, it still faces security risks. For example, with solutions such as Radio Frequency Identification (RFID) and Near Field Communication (NFC), the electrical signals can be copied, leading to security risks. Summary of the Invention

[0004] The present invention provides a keyless entry system with high security and overcomes the risk of being easily copied.

[0005] The keyless entry system includes: a carrying device having a carrying transmitting part and a carrying control part, the carrying control part controlling the carrying transmitting part to emit an unlocking signal, the unlocking signal being composed of at least a matching segment and a verification segment, and each time the unlocking signal is emitted, the carrying control part causes the verification segment to change according to a first rule; an unlocking device having an unlocking receiving part, an unlocking verification part, and an unlocking storage part, the unlocking receiving part receiving the unlocking signal and being verified by the verification part; after successful verification, the unlocking storage part saves the current verification segment as a reference segment; the unlocking verification part first verifies the matching segment, and after successful verification, compares and verifies the corresponding verification segment with the reference segment; the unlocking signal is transmitted in binary, and the first rule is a binary numerical change.

[0006] Preferably, the unlocking device further includes: an unlocking transmitting part; after each successful verification, the unlocking transmitting part sends an adjustment signal to the carrying device, and the adjustment signal includes the first rule.

[0007] Preferably, the verification segment is a numerically compiled value in binary, and the first rule is that the value increases; the unlocking device compares the received verification segment with the reference segment, and if the verification segment is greater than the reference segment, the verification is successful.

[0008] Preferably, the unlocking verification part verifies the matching segment and the verification segment respectively, and after successful verification, transforms the verification segment according to the first rule and uses it as the reference segment; the unlocking verification part compares the verification segment of the received unlocking signal with the reference segment, and if the comparison result is consistent, the verification is successful.

[0009] Preferably, the unlocking device further has an unlocking control unit; after verifying the unlocking signal generated by the carrying device, the unlocking control unit sends a confirmation signal to the vehicle control unit to perform the unlocking operation.

[0010] Preferably, the carrying device further includes a carrying storage unit; after the carrying transmitting unit sends the unlocking signal, the carrying control unit changes the verification segment sent this time at least once according to the first rule and stores it in the carrying storage unit as a backup verification segment.

[0011] The unlocking signal emitted by this keyless entry system has a matching segment and a verification segment. Through the comparison with the reference segment and the application of the first rule, a safe and reliable unlocking operation is achieved. The system also includes some additional features, such as adjustment signals, backup verification segments, etc., which improve the flexibility and robustness of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a flowchart of an embodiment of the keyless entry system. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0013] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0014] The keyless entry system is a modern entry system, which generally refers to the ability to enter and start a vehicle or building without using a traditional physical key. Although it is called "keyless", it actually still involves some electronic devices and technologies, rather than completely without any form of "key".

[0015] The keyless entry system usually uses electronic devices (such as smart cards, key fobs, mobile phones, etc.) to carry authentication information and completes the unlocking or starting operation by communicating with the electronic system of the vehicle or building. The working methods of such a system may include remote wireless communication, radio frequency identification, Bluetooth technology, etc., depending on the specific implementation.

[0016] Although the user does not need a physical key, they still need to carry the corresponding electronic device, and these devices contain information for identity verification. Therefore, although the keyless entry simplifies the user's operation process, it is not completely without elements related to the "key".

[0017] For the convenience of understanding, taking a car as an example, the corresponding electronic device that needs to be carried is called "carrying device 1", and correspondingly on the vehicle, the device that can match the carrying device 1 is called "unlocking device 2".

[0018] SeeFigure 1 The portable device 1 has a portable transmitting unit 11 and a portable control unit 12. In some embodiments, it also has a portable storage unit 13.

[0019] The unlocking device 2 has an unlocking receiving unit 21, an unlocking verification unit 22, and an unlocking storage unit 23. In some embodiments, it also has an unlocking transmitting unit 24 and an unlocking control unit 25.

[0020] The portable transmitting unit 11 emits an unlocking signal under the control of the portable control unit 12. The emitted unlocking signal includes at least two parts - a matching segment and a verification segment. The matching segment is fixed information used to match with the vehicle, and the verification segment information changes with each emission and is used to unlock the vehicle.

[0021] The matching segment can be understood as verifying whether the portable device 1 matches the unlocking device 2, avoiding a single portable device 1 communicating with multiple unlocking devices 2, which may cause potential safety hazards. This is similar to in traditional keys where one key corresponds to one lock. Here, the matching segment is to verify whether the portable device 1 corresponds to the unlocking device 2.

[0022] The verification segment is for further ensuring security. Since electromagnetic signals can be obtained and replicated, the fixed information in the matching segment is easily replicated. The verification segment changes according to a first rule each time the unlocking signal is emitted, thus avoiding the risk of being replicated.

[0023] The unlocking receiving unit 21 of the unlocking device 2 receives the unlocking signal that changes according to the first rule. The unlocking verification unit 22 verifies the matching segment and the verification segment respectively. After successful verification, the unlocking storage unit 23 saves the current verification segment as a reference segment. Next time during verification, the unlocking device 2 compares the verification segment of the received unlocking signal with the reference segment. If the comparison result conforms to the first rule, the verification is successful. The unlocking signal is transmitted in binary format, and the first rule is the change of binary numerical values.

[0024] If it is the first unlocking, there may be a situation where there is no base segment. Generally, it is pre-defaulted that the first unlocking is successful before the device is sold. After the product is launched and in use, there will be no problem.

[0025] For easy understanding, we assume that the matching segment is "AA"; the verification segment is "123", and the first rule is that the verification segment value is incremented by 1 each time. At this time, the reference segment of the unlocking device 2 is "122".

[0026] The carrying transmitting unit 11 emits an unlocking signal, which includes "AA123". The unlocking receiving unit 21 receives "AA123", and after verification by the unlocking verification unit 22, it is concluded that the matching segment "AA" is successful, and the verification segment "123" is +1 in value compared to the reference segment "122", which conforms to the first rule, so the verification is successful. At the same time, "123" is stored as the new reference segment in the unlocking storage unit 23.

[0027] In one embodiment, the first rule can be an increase in value, so as long as the verification segment is larger than the reference segment, the verification can be successful. Of course, in actual applications, in order to avoid the first rule being recognized and imitated, generally the first rule is more complex. Moreover, the first rule itself can also have a changing rule, for example, the difference value during each change is an arithmetic progression.

[0028] In some preferred embodiments, the first rule is provided by the unlocking device 2 and sent to the carrying device 1 through the unlocking transmitting unit 24. Correspondingly, the carrying device 1 is provided with a carrying receiving unit 14. Specifically, after the unlocking verification unit 22 verifies successfully, the unlocking transmitting unit 24 sends an adjustment signal to the carrying receiving unit 14, and the adjustment signal 21 includes the first rule. In this way, after each successful verification, the unlocking transmitting unit 24 will send the new first rule to the carrying receiving unit 14, thus avoiding the possibility of the first rule being copied.

[0029] Of course, the storage of the reference segment can also change actively. For example, after successfully verifying with "AA123", instead of storing "123" as the reference segment, "123" is changed to "124" according to the first rule, and then "124" is stored as the new reference segment. When verifying next time, directly verify whether the new verification segment is consistent with the reference segment.

[0030] After the unlocking verification unit 22 verifies the unlocking signal, the unlocking control unit 25 sends a confirmation signal to the vehicle control unit to perform the unlocking operation. After the carrying transmitting unit 11 sends the unlocking signal, the carrying control unit 12 changes the verification segment sent this time according to the first rule at least once, and then stores it in the carrying storage unit 13 as a backup verification segment.

[0031] For example, after the carrying transmitting unit 11 sends "AA123", it generates "AA124" according to the first rule and stores it as a backup verification segment. In this way, even if the carrying device 1 needs to replace the battery, the content to be sent next time can be saved.

[0032] This keyless entry system adopts the structure of a matching segment and a verification segment, and realizes a safe and reliable unlocking operation through the comparison of the verification and the reference segment and the application of the first rule.

[0033] The dual verification of the matching segment and the verification segment enhances the security of the system. The purpose of introducing the matching segment is to prevent a carrying device 1 from communicating with multiple unlocking devices 2, thereby preventing potential security risks. The static nature of the matching segment ensures that each carrying device 1 can only communicate with a specific unlocking device 2.

[0034] As for the verification segment, it changes according to the first rule during each emission. The system effectively avoids the risk of electromagnetic signals being replicated. The dynamic nature of the verification segment increases the randomness of the system, making it more difficult for attackers to imitate or replicate, thus enhancing the security of the system.

[0035] After successful verification, the unlocking device 2 stores the received verification segment as a reference segment, and this reference segment is not static. By changing the reference segment, such as adjusting it according to the first rule, the system increases its resistance to attacks. This design increases the difficulty for attackers to crack the reference segment and improves the security of the system.

[0036] To further improve the security of the system, the specific implementation of the first rule can be more complex. For example, different change rules can be adopted, such as the difference during each change being a changing sequence, or a new first rule being generated according to a certain algorithm. Such complication can effectively reduce the probability of attackers guessing and imitating.

[0037] In some embodiments, the unlocking device 2 provides the first rule and sends an adjustment signal to the carrying device 1 after successful verification. This way of dynamically updating the first rule increases the real-time performance of the system and reduces the chance for attackers to analyze and guess the first rule, thereby further enhancing the security of the system.

[0038] The unlocking device 2 adopts an adaptive method during verification, that is, it verifies according to the first rule. This enables the system to adapt to different usage environments and scenarios, improving the flexibility and applicability of the system.

[0039] The structure, features, and effects of the present invention have been described in detail based on the embodiments shown in the diagrams. The above are only the preferred embodiments of the present invention, but the present invention is not limited by the scope shown in the drawings. Any changes made according to the concept of the present invention, or modified into equivalent embodiments with equivalent changes, still within the spirit covered by the specification and the diagrams, should be within the protection scope of the present invention.

Claims

1. A keyless entry system, characterized in that, Including: A portable device (1) having a portable transmitting unit (11) and a portable control unit (12). The portable control unit (12) controls the portable transmitting unit (11) to emit an unlocking signal. The unlocking signal consists of at least a matching segment and a verification segment. And each time the unlocking signal is emitted, the portable control unit (12) causes the verification segment to change according to a first rule; An unlocking device (2) having an unlocking receiving unit (21), an unlocking verification unit (22), and an unlocking storage unit (23). The unlocking receiving unit (21) receives the unlocking signal and is verified by the verification unit (22); after successful verification, the unlocking storage unit (23) saves the current verification segment as a reference segment; The unlocking verification unit (22) first verifies the matching segment. After successful verification, it compares and verifies the corresponding verification segment with the reference segment; The unlocking signal is transmitted in binary, and the first rule is a binary numerical change.

2. The keyless entry system according to claim 1, characterized in that, The unlocking device (2) further includes: an unlocking transmitting unit (24); After each successful verification, the unlocking transmitting unit (24) sends an adjustment signal to the portable device (1). The adjustment signal includes the first rule.

3. The keyless entry system according to claim 1, characterized in that, The verification segment is a numerically compiled value in binary, and the first rule is that the value increases; The unlocking device (2) compares the received verification segment with the reference segment. If the verification segment is greater than the reference segment, the verification is successful.

4. The keyless entry system according to claim 1, characterized in that, The unlocking verification unit (22) verifies the matching segment and the verification segment respectively. After successful verification, it transforms the verification segment according to the first rule and uses it as the reference segment; The unlocking verification unit (22) compares the verification segment of the received unlocking signal with the reference segment. If the comparison result is consistent, the verification is successful.

5. The keyless entry system according to any one of claims 1-4, the unlocking device (2) further has an unlocking control unit (25); After verifying the unlocking signal generated by the carrying device (1), the unlocking control unit (25) sends a confirmation signal to the vehicle control unit to perform an unlocking operation.

6. The keyless entry system according to any one of claims 1-4, the carrying device (1) further includes a carrying storage unit (13) After the carrying transmitting unit (11) sends the unlocking signal, the carrying control unit (12) changes the verification segment sent this time at least once according to a first rule and then stores it in the carrying storage unit (13) as a backup verification segment.

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