A smart door lock with encryption and authentication

Abstract

This invention relates to the field of smart lock technology, and more particularly to an encrypted and authenticated smart lock, comprising a smart lock body, with an outer handle and an inner handle respectively provided at the front and rear ends of the smart lock body. A right-angle groove is provided in the middle of the front face of the smart lock body, and a guide post is slidably connected to the inner side of the right-angle groove. A fixing ring is fixedly connected to the front end of the guide post, and a first toothed ring is rotatably connected to the inner side of the fixing ring. A second toothed ring is rotatably connected to the inner side of the first toothed ring. An L-shaped rod is fixedly connected to the right end face of the second toothed ring, and a slider is slidably connected to the L-shaped rod. A cleaning pad is fixedly connected to the end of the slider facing the center of the second toothed ring. This invention provides high security during unlocking and can clean bacteria, impurities, and dust from the surface of the outer handle, preventing cross-infection.

Description

Technical Field

[0001] This invention relates to the field of smart door lock technology, specifically to an encrypted and authenticated smart door lock. Background Technology

[0002] Currently, with the continuous improvement of people's living standards, they are paying more and more attention to security measures. The home and automotive sectors have become important components of security. For example, most of the combination locks used in existing door locks, car door locks, and safe locks are traditional mechanical combination locks, electronic combination locks, or fingerprint locks. These traditional mechanical combination locks, electronic combination locks, or fingerprint locks all use fixed passwords to unlock. Mechanical lock keys are highly stable and low in cost, while electronic combination locks and fingerprint locks are convenient to use.

[0003] However, after prolonged use, the outer handle of existing smart door locks accumulates a large amount of bacteria and dust, making it difficult to clean and potentially leading to cross-infection among people. Furthermore, electronic combination locks have simple passwords that are easily cracked, while fingerprint locks allow fingerprints to be copied technically, potentially posing a security risk of password leakage. Summary of the Invention

[0004] The purpose of this invention is to provide an encrypted and authenticated smart lock to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] An encrypted and authenticated smart lock includes a smart lock body. An outer handle and an inner handle are respectively provided at the front and rear ends of the smart lock body. A right-angle groove is provided in the middle of the front face of the smart lock body. A guide post is slidably connected to the inner side of the right-angle groove. A fixing ring is fixedly connected to the front end of the guide post. A first toothed ring is rotatably connected to the inner side of the fixing ring. A second toothed ring is rotatably connected to the inner side of the first toothed ring. An L-shaped rod is fixedly connected to the right end face of the first toothed ring. A slider is slidably connected to the L-shaped rod. A cleaning pad is fixedly connected to the end of the slider facing the center of the second toothed ring.

[0007] Preferably, a second connecting rod is rotatably connected to the middle of the slider via a pin, a first connecting rod is rotatably connected to the end of the second connecting rod away from the slider via a pin, and a second gear ring is rotatably connected to the end of the first connecting rod away from the second connecting rod via a pin.

[0008] Preferably, a first motor is fixedly connected to the middle of the front end of the fixed ring, and a first gear is fixedly connected to the output end of the first motor through a first rotating shaft. The first gear meshes with the first gear ring.

[0009] Preferably, a second motor is fixedly connected to the middle of the front side of the left end of the first gear ring, and a second gear is fixedly connected to the output end of the second motor via a pin, and the second gear meshes with the second gear ring.

[0010] Preferably, the lower side of the front end face of the smart door lock body is provided with a horizontal groove, a slide rod is slidably connected to the inner side of the horizontal groove, a slide sleeve is slidably connected to the slide rod, and the guide post is fixedly connected to the middle of the slide sleeve.

[0011] Preferably, a third motor is fixedly connected to the lower right side of the interior of the smart door lock body, and a sliding rod is fixedly connected to the output end of the third motor through a third rotating shaft. The guide column is slidably connected to the inner side of the sliding rod.

[0012] Preferably, the smart lock body is used to generate a registration key, a random number, and a data key based on the random number; encrypt the random number and the data key using the registration key; send the registration key, the encrypted random number, and the encrypted data key to the smart key; and complete authentication with the smart key based on the registration key, the random number, and the data key. After the smart lock body and the smart key complete authentication, the unlocking password is encrypted using the data key, and the encrypted unlocking password is sent to the smart key. Simultaneously, the smart lock body responds to the unlocking password it receives, which has been decrypted by the smart key, to unlock the lock. The smart lock body also responds to the unlocking password it receives, which has been decrypted by the smart key, to unlock the lock.

[0013] Preferably, the smart key is used to receive the registration key, the encrypted random number, and the encrypted data key sent by the smart lock body, and to decrypt the random number and data key encrypted with the registration key through the received registration key, and return them to the smart lock body for verification, so as to complete the authentication between the smart lock body and the smart key.

[0014] Preferably, the smart key is used to generate a registration key, a random number, and a data key based on the random number. The registration key is used to encrypt the random number and the data key. The registration key, the encrypted random number, and the encrypted data key are sent to the smart lock body. The smart key is used to complete the authentication between the smart lock body and the smart lock body based on the registration key, the random number, and the data key.

[0015] Preferably, after the smart key and the smart lock body complete authentication, the unlocking password is encrypted with a data key and sent to the smart lock body. At the same time, the smart key verifies the unlocking password it receives after it has been decrypted by the smart lock body. After successful verification, it generates an confirmation signal and sends it to the smart lock body so that the smart lock body can unlock the lock.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. In this invention, after a person opens the smart door lock and enters the room, they can operate the smart door lock body via a remote APP. First, the third motor is started to drive the sliding rod to rotate. The sliding rod drives the guide column to slide inside the right-angle groove. First, the guide column rises, and then the guide column moves to the right until the outer handle is at the center of the second gear ring. Then, the second motor is started to drive the second gear to rotate. The second gear drives the second gear ring to rotate. The second gear ring drives the first connecting rod to rotate. The first connecting rod drives the slider to slide on the L-shaped rod through the second connecting rod, so that the cleaning pad moves closer to the center of the second gear ring and fits the cleaning pad with the outer handle. Then, the first motor is started to drive the first gear to rotate. The first gear drives the first gear ring to rotate, so that the cleaning pad rotates. When the cleaning pad moves left and right, it also rotates, cleaning the outer handle. Thus, it can automatically clean the outer handle after a person enters the room, avoiding the situation where a certain amount of bacteria and dust adheres to the surface of the outer handle after a long period of use, causing cross-infection.

[0018] 2. In this invention, the smart lock body generates registration key information; the smart lock body sends the registration key to the smart key; the smart lock body generates a random number; the smart lock body encrypts the random number with the registration key and sends it to the smart key; the smart key decrypts the random number using the received registration key; the smart key sends the decrypted random number to the smart lock body; the smart lock body verifies the random number, and upon successful verification, derives a data key from the random number; the smart lock body encrypts the data key with the registration key and sends it to the smart key; the smart key decrypts the data key based on the registration key, and the smart lock body uses the data key to encrypt the unlocking password; the smart lock body sends the encrypted unlocking password; the smart key decrypts the unlocking password using the data key; the smart key sends the decrypted unlocking password to the smart lock body; the smart lock body verifies the password, and upon successful verification, responds with the unlocking password to unlock the lock, thereby improving security. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the internal control module structure of the smart door lock of the present invention;

[0020] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 3 For the present invention Figure 2 Enlarged structural diagram of region A in the middle;

[0022] Figure 4 This is a partial three-dimensional structural schematic diagram of the present invention;

[0023] Figure 5 For the present invention Figure 4 Enlarged structural diagram of region B in the middle;

[0024] Figure 6 For the present invention Figure 4 Enlarged structural diagram of region C in the middle;

[0025] Figure 7 This is a partial three-dimensional structural diagram of the internal cross-section of the main body of the smart door lock of the present invention.

[0026] In the diagram: 1. Smart door lock body; 2. Outer handle; 3. Inner handle; 4. Horizontal groove; 5. Right-angle groove; 6. Fixing ring; 7. First gear ring; 8. Second gear ring; 9. Cleaning pad; 10. Slider; 11. L-shaped rod; 12. First connecting rod; 13. Second connecting rod; 14. First motor; 15. First rotating shaft; 16. First gear; 17. Second motor; 18. Second gear; 19. Second rotating shaft; 20. Slide rod; 21. Slide groove rod; 22. Slide sleeve; 23. Third motor; 24. Third rotating shaft; 25. Guide post. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0028] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Several embodiments of the invention are illustrated in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

[0029] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0031] Please see Figure 1-7 The present invention provides a technical solution:

[0032] An encrypted and authenticated smart lock includes a smart lock body 1. The smart lock body 1 has an outer handle 2 and an inner handle 3 at its front and rear ends, respectively. The front face of the smart lock body 1 has a right-angle groove 5 in the middle. A guide post 25 is slidably connected to the inner side of the right-angle groove 5. A fixing ring 6 is fixedly connected to the front end of the guide post 25. A first toothed ring 7 is rotatably connected to the inner side of the fixing ring 6. A second toothed ring 8 is rotatably connected to the inner side of the first toothed ring 7. An L-shaped rod 11 is fixedly connected to the right end of the first toothed ring 7. A slider 10 is slidably connected to the L-shaped rod 11. A cleaning pad 9 is fixedly connected to the end of the slider 10 facing the center of the second toothed ring 8.

[0033] In this embodiment, a second connecting rod 13 is rotatably connected to the middle of the slider 10 via a pin. The end of the second connecting rod 13 away from the slider 10 is rotatably connected to a first connecting rod 12 via a pin. The end of the first connecting rod 12 away from the second connecting rod 13 is rotatably connected to a second gear ring 8 via a pin. A first motor 14 is fixedly connected to the middle of the front end of the fixed ring 6. A first gear 16 is fixedly connected to the output end of the first motor 14 via a first rotating shaft 15. The first gear 16 meshes with a first gear ring 7. A second motor 17 is fixedly connected to the middle of the front side of the left end face of the first gear ring 7. A second gear 18 is fixedly connected to the output end of the second motor 17 via a pin. The second gear 18 meshes with the second gear ring 8. A horizontal groove 4 is provided on the lower side of the front face of the smart door lock body 1. A sliding rod 20 is slidably connected to the inner side of the horizontal groove 4. A sliding sleeve 22 is slidably connected to the sliding rod 20. A guide post 25 is fixedly connected to the middle of the sliding sleeve 22. A third motor 23 is fixedly connected to the lower right side of the interior of the smart lock body 1. The output end of the third motor 23 is fixedly connected to a sliding rod 21 via a third rotating shaft 24. A guide post 25 is slidably connected to the inner side of the sliding rod 21. After a person opens the smart lock and enters the room, they can operate the smart lock body 1 via a remote APP. First, the third motor 23 is started to drive the sliding rod 21 to rotate. The sliding rod 21 drives the guide post 25 to slide inside the right-angle groove 5. First, the guide post 25 is raised, and then the guide post 25 is moved to the right until the outer handle 2 is at the center of the second gear ring 8. Then, the second motor 17 is started to drive the second gear 18 to rotate. The second gear 18 drives the second gear ring 8 to rotate. The second gear ring 8 drives the first connecting rod 12 to rotate. The first connecting rod 12 is connected to the second connecting rod... 13 drives the slider 10 to slide on the L-shaped rod 11, causing the cleaning pad 9 to move closer to the center of the second gear ring 8, so that the cleaning pad 9 fits against the outer handle 2. Then, the first motor 14 is started to drive the first gear 16 to rotate, and the first gear 16 drives the first gear ring 7 to rotate, which causes the cleaning pad 9 to rotate. As the cleaning pad 9 moves left and right, it also rotates, cleaning the outer handle 2. This can achieve an automatic cleaning effect on the outer handle 2 after people enter the door, avoiding the situation where a certain amount of bacteria and dust adhere to the surface of the outer handle 2 after a long period of use, causing cross-infection.

[0034] In this embodiment, the smart lock body 1 is used to generate a registration key, a random number, and a data key based on the random number. It encrypts the random number and data key using the registration key, and sends the registration key, the encrypted random number, and the encrypted data key to the smart key. Based on the registration key, the random number, and the data key, it completes authentication with the smart key. After authentication between the smart lock body 1 and the smart key, it encrypts the unlocking password using the data key and sends the encrypted unlocking password to the smart key. Simultaneously, the smart lock body 1 responds with the received unlocking password decrypted by the smart key to unlock the lock. The smart key receives the registration key, the encrypted random number, and the encrypted data key sent by the smart lock body 1, and decrypts the random number and data key encrypted with the registration key using the received registration key. It then returns these decrypted data keys to the smart lock body 1 for verification, thus completing the authentication between the smart lock body 1 and the smart key. The smart key is used to generate a registration key, a random number, and a data key based on the random number. It encrypts the random number and data key using the registration key, and sends these three components to the smart lock body 1. Based on these components, it completes authentication with the smart lock body 1. After authentication, the smart key encrypts the unlocking password using the data key and sends the encrypted password to the smart lock body 1. Simultaneously, the smart key verifies the received unlocking password, which has been decrypted by the smart lock body 1. Upon successful verification, it generates a confirmation signal and sends it to the smart lock body 1, allowing the smart lock body 1 to unlock the door. The smart lock body 1 generates registration key information; the smart lock body 1 sends the registration key to the smart key; the smart lock body 1 generates a random number; the smart lock body 1 encrypts the random number with the registration key and sends it to the smart key; the smart key decrypts the random number using the received registration key; the smart key sends the decrypted random number to the smart lock body 1; the smart lock body 1 verifies the random number, and upon successful verification, derives a data key from the random number; the smart lock body 1 encrypts the data key with the registration key and sends it to the smart key; the smart key decrypts the data key based on the registration key, and the smart lock body 1 uses the data key to encrypt the unlocking password; the smart lock body 1 sends the encrypted unlocking password; the smart key decrypts the unlocking password using the data key; the smart key sends the decrypted unlocking password to the smart lock body 1; the smart lock body 1 verifies the password, and upon successful verification, responds with the unlocking password to unlock the lock.

[0035] The working principle of this invention is as follows: In use, the smart lock body 1 generates registration key information; the smart lock body 1 sends the registration key to the smart key; the smart lock body 1 generates a random number; the smart lock body 1 encrypts the random number with the registration key and sends it to the smart key; the smart key decrypts the random number using the received registration key; the smart key sends the decrypted random number to the smart lock body 1; the smart lock body 1 verifies this random number, and upon successful verification, derives a data key based on the random number; the smart lock body 1 encrypts the data key with the registration key and sends it to the smart key; the smart key decrypts the data key based on the registration key, and the smart lock body 1 uses the data key to encrypt the unlocking password; the smart lock body 1 sends the encrypted unlocking password; the smart key decrypts the unlocking password using the data key; the smart key sends the decrypted unlocking password to the smart lock body 1; the smart lock body 1 verifies the password, and upon successful verification, responds to the unlocking password to unlock the lock. After entering the room through the smart door lock, personnel can operate the smart door lock body 1 via a remote APP. First, the third motor 23 is started to drive the sliding rod 21 to rotate. The sliding rod 21 drives the guide column 25 to slide inside the right-angle groove 5. First, the guide column 25 is raised, and then the guide column 25 is moved to the right until the outer handle 2 is at the center of the second gear ring 8. Then, the second motor 17 is started to drive the second gear 18 to rotate. The second gear 18 drives the second gear ring 8 to rotate. The second gear ring 8 drives the first connecting rod 12 to rotate. The first connecting rod 12, through the second connecting rod 1... 3. The slider 10 slides on the L-shaped rod 11, causing the cleaning pad 9 to move closer to the center of the second gear ring 8, so that the cleaning pad 9 fits against the outer handle 2. Then, the first motor 14 is started to drive the first gear 16 to rotate. The first gear 16 drives the first gear ring 7 to rotate, which causes the cleaning pad 9 to rotate. As the cleaning pad 9 moves left and right, it also rotates, cleaning the outer handle 2. This can achieve an automatic cleaning effect on the outer handle 2 after people enter the door, avoiding the situation where a certain amount of bacteria and dust adhere to the surface of the outer handle 2 after a long period of use, causing cross-infection.

[0036] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An encryption authenticated smart door lock comprising a smart door lock body (1), characterized in that: The intelligent door lock body (1) is provided with outer handle (2) and inner handle (3) at both ends, the straight groove (5) is arranged in the middle of the front end face of the intelligent door lock body (1), the guide column (25) is slidably connected to the inner side of the straight groove (5), the fixed ring (6) is fixedly connected to the front end of the guide column (25), the first gear ring (7) is rotatably connected to the inner side of the fixed ring (6), the second gear ring (8) is rotatably connected to the inner side of the first gear ring (7), the L-shaped rod (11) is fixedly connected to the right end face of the first gear ring (7), the sliding block (10) is slidably connected to the L-shaped rod (11), the cleaning pad (9) is fixedly connected to one end of the sliding block (10) towards the center of the second gear ring (8); The second connecting rod (13) is rotatably connected to the middle of the sliding block (10) through a pin shaft, one end of the second connecting rod (13) away from the sliding block (10) is rotatably connected to the first connecting rod (12) through a pin shaft, and the first connecting rod (12) is rotatably connected to the second gear ring (8) at an end away from the second connecting rod (13); The first motor (14) is fixedly connected to the middle of the front end of the fixed ring (6), the first gear (16) is fixedly connected to the output end of the first motor (14) through the first rotating shaft (15), and the first gear (16) is meshingly connected to the first gear ring (7); The second motor (17) is fixedly connected to the middle of the left end face of the first gear ring (7), the second gear (18) is fixedly connected to the output end of the second motor (17) through a pin shaft, and the second gear (18) is meshingly connected to the second gear ring (8); The horizontal groove (4) is arranged on the lower side of the front end face of the intelligent door lock body (1), the sliding rod (20) is slidably connected to the inner side of the horizontal groove (4), the sliding sleeve (22) is slidably connected to the sliding rod (20), and the guide column (25) is fixedly connected to the middle of the sliding sleeve (22); The third motor (23) is fixedly connected to the lower right end of the inside of the intelligent door lock body (1), the sliding groove rod (21) is fixedly connected to the output end of the third motor (23) through the third rotating shaft (24), and the guide column (25) is slidably connected to the inner side of the sliding groove rod (21).

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