Networked multifunctional intelligent lock system

Abstract

The invention provides a networked multifunctional intelligent lock system, and relates to the technical field of intelligent locks, the networked multifunctional intelligent lock system comprises a communication module which exchanges data with intelligent equipment through a quantum encryption communication protocol, the quantum encryption communication protocol can effectively prevent external interference and network attacks, high-security encryption transmission is provided, and the communication module is connected with the intelligent equipment; according to the system, the security of data is ensured, the confidentiality and integrity of the data are ensured, potential safety hazards in traditional Wi-Fi and Bluetooth protocols are avoided, and a multi-identity authentication module comprises fingerprint recognition, face recognition and dynamic password technologies. According to the networked multifunctional intelligent lock system, the quantum key distribution technology is combined, so that the intelligent lock system can effectively prevent external interference and network attacks in the data exchange process. According to the quantum encryption protocol, secure sharing of encryption keys is realized through photon transmission, and encryption independence of each data packet is ensured by adopting a one-time pad scheme, so that potential safety hazards existing in traditional Wi-Fi and Bluetooth protocols are avoided.

Description

Technical Field

[0001] This invention relates to the field of smart lock technology, specifically to a networked, multifunctional smart lock system. Background Technology

[0002] With the rapid development of intelligent technologies, smart locks have become widely used as essential security devices for homes and businesses. Smart locks connect to smartphones, tablets, and other networked devices via wireless communication technologies such as Wi-Fi, Bluetooth, and Zigbee, providing functions such as remote control, password unlocking, and fingerprint recognition, greatly facilitating users' daily lives. In some advanced applications, smart locks can also integrate with other smart devices to form a more intelligent security management system. These smart lock systems not only improve convenience but also provide users with higher security, effectively avoiding the problems of easy cracking and loss associated with traditional mechanical locks.

[0003] Existing smart lock technology has certain problems in practical applications. Many existing smart locks rely on traditional wireless communication protocols, such as Wi-Fi and Bluetooth, which are susceptible to external interference and attacks during transmission, posing significant security risks. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a networked, multi-functional smart lock system. The technical problem this invention aims to solve is: how to employ quantum encrypted communication, multi-factor authentication, and low-power design to ensure the system operates normally under low power consumption and high security requirements, while simultaneously protecting the security of users' sensitive data.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a networked multifunctional smart lock system, comprising: The communication module exchanges data with smart devices through a quantum encryption communication protocol. This quantum encryption communication protocol can effectively prevent external interference and network attacks, provide highly secure encrypted transmission, ensure the confidentiality and integrity of data, and avoid the security risks of traditional Wi-Fi and Bluetooth protocols. The multi-factor authentication module includes fingerprint recognition, facial recognition, and dynamic password technology. The multi-factor authentication module can provide multi-layer security protection and effectively prevent unauthorized intrusion. The intelligent control unit automatically controls the door lock status through user identity information and can be remotely controlled via smartphones and tablets. The intelligent control unit can be integrated with home automation systems to achieve remote unlocking, authorization management, and log recording. The backup battery module improves battery life through low-power design, ensuring normal operation of the lock when the battery is low. The data protection module includes an encrypted storage module, an encrypted transmission module, and a data backup module.

[0006] Preferably, the quantum encrypted communication protocol for data exchange with smart devices specifically includes the following steps: S1.1 integrates a lightweight quantum key distribution unit in the smart lock terminal. The lightweight quantum key distribution unit is based on a simplified version of the BB84 protocol. It generates and exchanges quantum keys through miniaturized photon emitters and detectors in the visible light band with a wavelength range of 650-850nm, realizing low power consumption and short distance quantum key generation and exchange, which is suitable for the physical conditions of home environment and smart terminal devices. Before each communication connection is established between the smart lock and the smart device, the lightweight quantum key distribution unit described in S1.2 performs a real-time quantum key negotiation to generate a one-time encryption key. This key is updated and used in the following ways: Knew = H(Kold||ran); Where H(·) is the hash function, Kold is the key successfully negotiated in the last time, and ran is the current random number to prevent replay attacks and key prediction; S1.3 During data transmission, a one-time pad scheme is used for data encryption. Each data packet is encrypted using an independently generated quantum key to ensure that the encryption strength meets the information theory security standard and to prevent man-in-the-middle attacks and brute-force cracking. S1.4 Sets up a security chip based on a physically unclonable function for mobile smart devices to cooperate with quantum key dynamic authentication. That is, after the smart lock and the mobile device establish key negotiation, the mobile device needs to generate the corresponding authentication response code through the physically unclonable function chip to authenticate both parties in the communication, thereby further improving the overall security of the system. S1.5 In the quantum key transmission process, a holographic encryption protocol is adopted. The holographic encryption protocol encodes the photons generated by the quantum key into multi-dimensional holographic light signals. The light field of the hologram Given by the following formula: ; in: : Also, they are complex coefficients, representing each pattern The amplitude in the hologram, It controls the contribution level of different modes. Photon mode In spatial location The phase on the image, being part of the hologram, determines the phase difference of the photon mode at that location; different phases... Representing different spatial or optical modes, : Phase factor in exponential form, where It is an imaginary unit. In this way, the phase information of each photon mode is combined with its amplitude information to achieve spatial encoding. The S1.6 communication module is equipped with a key expiration and update mechanism. When the smart lock detects abnormal channel noise or excessive interference, it immediately discards the current key and re-negotiates the quantum key, effectively resisting new quantum eavesdropping attack methods.

[0007] Preferably, each key in the one-time key scheme is used to encrypt a data packet only once, and the key length is equal to the data packet length.

[0008] Preferably, the multi-factor authentication module performs authentication through the following steps: S2.1 provides a fingerprint recognition module that verifies the user's identity by scanning the user's fingerprint image and comparing it with pre-stored fingerprint data; S2.2 provides a facial recognition module that verifies the user's identity by capturing the user's facial image and comparing it with pre-stored facial feature data; S2.3 provides a dynamic password module, which sends a one-time password to the user's smart device and verifies the user's identity by comparing the one-time password entered by the user with the system verification result.

[0009] Preferably, the encrypted storage module is used to encrypt and store the user's unlocking records, permission information, and other sensitive data using an asymmetric encryption algorithm, RSA. The encrypted transmission module uses a quantum encryption protocol to encrypt and transmit sensitive data, ensuring data security during transmission and preventing data theft or tampering. The data backup module periodically backs up the encrypted data to a cloud server, ensuring data integrity and consistency. The backup module uses the SHA-256 hash algorithm for data verification to ensure the accuracy of the backup data.

[0010] Preferably, the intelligent control unit automatically controls the door lock status based on user identity information, including the following steps: S3.1 Based on the user's permission level, control the door lock's unlocking and locking functions. The permission level can be set through user roles. S3.2 provides remote control functionality, allowing users to remotely unlock, manage authorization, and query historical logs via smartphones and tablets. The log recording module records all unlocking records and user activity information for subsequent review and management. S3.3 integrates with home automation systems, supporting the linkage of smart home devices.

[0011] Preferably, the AES-256 encryption process includes the following steps: Generate a new key from the quantum key distribution before generating the data packet; The data packets are encrypted with a new key to ensure that the encryption of each data packet is independent and unpredictable.

[0012] Preferably, the backup battery module automatically switches to the backup battery when the battery power reaches a set voltage threshold to ensure that the system can continue to work. The low power design includes the use of a low power wireless communication protocol and an intelligent sleep mode to maximize the battery life.

[0013] Preferably, the current key expires when the channel noise exceeds a set channel noise threshold. The channel noise threshold is based on real-time signal quality assessment within the device to ensure that the key is updated promptly when the channel quality does not meet the encryption standard.

[0014] This invention provides a networked, multifunctional smart lock system. It has the following advantages: This networked, multi-functional smart lock system, incorporating quantum key distribution technology, effectively prevents external interference and network attacks during data exchange. The quantum encryption protocol achieves secure key sharing through photon transmission and employs a one-time pad scheme to ensure the independent encryption of each data packet, thus avoiding security vulnerabilities present in traditional Wi-Fi and Bluetooth protocols. Furthermore, the dual encryption method combining quantum and classical encryption significantly enhances the system's resistance to attacks and ensures confidentiality and data integrity during communication. Key update and key expiration mechanisms dynamically respond to environmental changes, improving system stability and security.

[0015] The multi-factor authentication module combines fingerprint recognition, facial recognition, and dynamic password technologies to provide a highly secure authentication solution. Through multiple authentication steps, it effectively prevents unauthorized intrusion, ensuring that only authorized users can operate the smart lock. Furthermore, the data protection module ensures the security of user unlocking records and sensitive access information through encrypted storage and transmission schemes and data backup mechanisms. It also employs advanced hash algorithms to verify backup data, guaranteeing the accuracy and integrity of the backups. Through these measures, the system provides a high standard of data security protection and achieves long-term stable operation, improving user experience and system reliability. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a structure for realizing an invention; Figure 2 This is a flowchart illustrating the process of implementing an invention. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] like Figure 1-2 As shown, this embodiment of the invention provides a networked multifunctional smart lock system, including a communication module that exchanges data with smart devices via a quantum encryption communication protocol. The quantum encryption communication protocol effectively prevents external interference and network attacks, provides highly secure encrypted transmission, ensures the confidentiality and integrity of data, and avoids the security risks of traditional Wi-Fi and Bluetooth protocols. The specific steps for exchanging data with smart devices via the quantum encryption communication protocol include: S1.1 integrates a lightweight quantum key distribution unit (QKD) into the smart lock. Based on a simplified BB84 protocol, the QKD utilizes a miniaturized photon emitter and detector in the 650-850nm visible light band for quantum key generation and exchange. This enables low-power, short-distance QKD, adapting to the physical conditions of home environments and smart terminal devices. The QKD generates a 16-qubit key using the simplified BB84 protocol. Key exchange is performed in an experimental environment using the photon emitter and detector, with each photon transmitting approximately 2 meters, meeting the communication range requirements for home smart devices. Before each communication connection is established between the smart lock and the smart device, the S1.2 lightweight quantum key distribution unit performs a real-time quantum key negotiation to generate a one-time encryption key. The key is updated and used in the following ways: Knew=H(Kold||ran) Where H(·) is the hash function, Kold is the key successfully negotiated in the last time, and ran is the current random number to prevent replay attacks and key prediction; S1.3 During data transmission, a one-time pad scheme is used for data encryption. Each data packet is encrypted using an independently generated quantum key to ensure that the encryption strength meets the information theory security standard, and to prevent man-in-the-middle attacks and brute-force cracking. Each key in the one-time pad scheme is used to encrypt the data packet only once, and the key length is equal to the data packet length. S1.4 A security chip based on a Physically Unclonable Function (PUF) is installed on the mobile smart device to cooperate with quantum key dynamic authentication. After the smart lock and the mobile device establish a key negotiation, the mobile device needs to generate a corresponding authentication response code through the PUF chip. This two-way authentication between the communicating parties further enhances the overall system security. The smart lock generates a 256-bit key through quantum key negotiation and requires the mobile device to generate a response code through the PUF chip. During the generation process, the PUF chip generates a unique 256-bit response code through an internal physical process. The smart lock verifies this response code to complete the two-way authentication. In the quantum key transmission process, S1.5 employs a holographic encryption protocol, which encodes photons generated by the quantum key into multi-dimensional holographic light signals. The light field of the hologram Given by the following formula: ; in: : Also, they are complex coefficients, representing each pattern The amplitude in the hologram, It controls the contribution level of different modes. Photon mode In spatial location The phase on the image, being part of the hologram, determines the phase difference of the photon mode at that location; different phases... Representing different spatial or optical modes, : Phase factor in exponential form, where It is an imaginary unit. In this way, the phase information of each photon mode is combined with its amplitude information to achieve spatial encoding. The encrypted data is transmitted via a hologram of photons. The receiving end uses a holographic decoder to analyze the received light signal and recover the original quantum key, thereby decrypting the data. Holographic decoding and key recovery: The receiving end decodes the holographic light signal according to different dimensions (such as frequency, wavelength, and angle), recovers the quantum key, and uses this key for subsequent data decryption. Key update and switching mechanism: In order to prevent the long-term use of the same key, the system will periodically update the key according to the protection level of holographic encryption, generate a new quantum key, and re-encrypt and decrypt the data.

[0019] The S1.6 communication module is equipped with a key expiration and update mechanism. When the smart lock detects abnormal channel noise or excessive interference, it immediately discards the current key and re-negotiates the quantum key, effectively resisting new quantum eavesdropping attack methods. When the channel noise exceeds the set channel noise threshold, the current key is triggered to expire. The channel noise threshold is based on the device's internal real-time signal quality assessment, ensuring that the key is updated in a timely manner when the channel quality does not meet the encryption standard.

[0020] Channel Noise Detection: The smart lock's built-in signal quality assessment module monitors the noise level of the communication channel in real time. This module evaluates channel quality by measuring signal strength and signal-to-noise ratio (SNR). Assuming the current communication channel signal strength is -45dBm, the device compares this value with the signal noise to calculate the SNR. To effectively prevent security vulnerabilities in communication, a noise threshold of 50dB is set. When the SNR falls below this threshold, the system considers the channel quality to be substandard and requires immediate discarding of the current key and renegotiation of a new key.

[0021] Suppose that during communication, the noise level of the smart lock exceeds a set threshold during monitoring, with a current signal-to-noise ratio (SNR) of 45dB. At this point, the signal quality assessment module triggers a key invalidation mechanism, deeming the current key insufficient for adequate encryption security. If the noise level increases further, causing the SNR to drop to 40dB, the smart lock will immediately trigger key invalidation, discarding the current key and initiating a quantum key negotiation process.

[0022] Key expiration trigger and key update: When the channel noise exceeds a set threshold of 50dB, the current key is discarded, and a new quantum key negotiation process is initiated. Assuming the previously used key length was 256 bits, the system will perform a new quantum key exchange to generate a new 256-bit encryption key. This new key is immediately used for subsequent encrypted data transmission.

[0023] Specific examples: Assuming the signal-to-noise ratio is 45dB when transmitting data between the smart lock and the smart device, if the noise increases to 50dB or higher, the smart lock immediately discards the current 256-bit key and renegotiates a new 256-bit key. This process is performed by a quantum key distribution unit.

[0024] In actual testing, the smart lock and smart device successfully triggered a key update when the channel quality was poor, ensuring that the communication continued to maintain high security.

[0025] Real-time signal quality assessment: The smart lock uses a built-in signal quality assessment algorithm to monitor signal strength and noise levels in real time. If the channel quality is detected to be below the encryption standard, the system immediately triggers a key update process when the SNR is below 50dB, avoiding potential security risks.

[0026] The multi-factor authentication module, including fingerprint recognition, facial recognition, and dynamic password technology, provides multi-layered security protection and effectively prevents unauthorized intrusion. The multi-factor authentication module performs authentication through the following steps: S2.1 provides a fingerprint recognition module that verifies the user's identity by scanning the user's fingerprint image and comparing it with pre-stored fingerprint data; Fingerprint data processing and comparison: Assume the fingerprint image provided by the user has a resolution of 500 dpi. After being scanned by the fingerprint sensor, this image generates a 256×256 pixel image.

[0027] After fingerprint image processing, fingerprint features are extracted, generating 256 bytes of fingerprint feature data.

[0028] The system compares the fingerprint feature data with pre-stored fingerprint feature data (e.g., the fingerprint feature data is 256 bytes long). If the similarity between the two exceeds a set threshold (e.g., 90% similarity), the verification is successful.

[0029] Assuming that user A's fingerprint features have a 92% similarity to the fingerprint features stored in the system (exceeding the set 90% threshold), the verification is successful and entry is permitted.

[0030] If the fingerprint feature similarity is 85% (below the 90% threshold), the verification fails and the system will require the user to perform a second verification. S2.2 provides a facial recognition module that verifies the user's identity by capturing the user's facial image and comparing it with pre-stored facial feature data; Assume the facial image provided by the user has a resolution of 1920×1080 pixels. After the image is scanned by a camera, features are extracted using a convolutional neural network.

[0031] The extracted facial feature data is a 256-dimensional vector. The system compares it with pre-stored facial feature data, and if the similarity between the two exceeds a set threshold (e.g., 95% similarity), the verification is successful.

[0032] User B's facial features have a 98% similarity to the facial features stored in the system (exceeding the set 95% threshold), so the verification is successful.

[0033] If the facial feature similarity is 92% (below the 95% threshold), the verification fails, and the system will require the user to use other methods of authentication (such as a dynamic password).

[0034] S2.3 provides a dynamic password module, which sends a one-time password to the user's smart device and compares the one-time password entered by the user with the system verification result to verify the user's identity; The dynamic password module sends a one-time password (OTP) to the user's smart device. The OTP is generated based on a timestamp and the user's device's unique identifier, ensuring that the password is unique each time you log in.

[0035] OTP verification: Assume the OTP is 6 digits long. The system sends the OTP via SMS, email, or application push.

[0036] The user enters the received OTP into the input interface, and the system compares the entered OTP with the pre-stored dynamic password. If the entered OTP is correct, the verification is successful.

[0037] Data processing and validation examples: User C receives an OTP of "354672". After entering it, the system compares it with the OTP in the database. If the input is correct and the OTP is entered within its validity period (e.g., within 30 seconds), the verification passes.

[0038] If the OTP is entered incorrectly or times out, the system will prompt the user to re-enter the OTP. The intelligent control unit automatically controls the door lock status using user identification information and can be remotely controlled via smartphones and tablets. It can integrate with home automation systems to enable remote unlocking, authorization management, and log recording. The intelligent control unit automatically controls the door lock status using user identification information through the following steps: S3.1 Based on the user's permission level, control the door lock's unlocking and locking functions. The permission level can be set through user roles. S3.2 provides remote control functionality, allowing users to remotely unlock, manage authorization, and query historical logs via smartphones and tablets. The log recording module records all unlocking records and user activity information for subsequent review and management. Remote control function: Users can remotely unlock, lock, manage permissions, and query historical logs via a dedicated application using smartphones and tablets.

[0039] Remote unlocking and locking: For example, user A remotely unlocks the door using a mobile app while away from home. After the system verifies their permissions, the door is unlocked. Assuming the system latency is 300 milliseconds (ms), the operation takes effect immediately.

[0040] Authorization Management: User A granted User B (a family member) additional permissions within the app, enabling User B to unlock the door lock within the next 24 hours.

[0041] Historical log query: The logging module records information for each door lock operation, such as the unlocking time, the user operating the lock, and the device's IP address. This log information can be queried via the app; for example, a user could retrieve all door lock activity records from the past 30 days.

[0042] Log recording example: Operation Log 1: User A (administrator) successfully unlocked the device at 13:45 on April 27, 2025. Device IP: 192.168.1.101, Operation Type: Unlock, Status: Success.

[0043] Operation Log 2: User B (family member) remotely unlocked the door at 14:10 on April 27, 2025. Device IP: 203.0.113.45, Operation type: remote unlocking, Status: successful.

[0044] S3.3 integrates with home automation systems, supporting the linkage of smart home devices; The backup battery module improves battery life through low-power design. When the battery level reaches a set voltage threshold, it automatically switches to backup battery to ensure continuous system operation. The low-power design includes low-power wireless communication protocols and an intelligent sleep mode to maximize battery life and ensure normal operation of the lock even with low battery levels. The data protection module includes an encrypted storage module, an encrypted transmission module, and a data backup module. The encrypted storage module encrypts user unlocking records, access information, and other sensitive data using an asymmetric encryption algorithm (RSA). The encrypted transmission module uses a quantum encryption protocol to encrypt sensitive data during transmission, ensuring data security and preventing theft or tampering. The data backup module periodically backs up encrypted data to a cloud server, ensuring data integrity and consistency. The backup module uses the SHA-256 hash algorithm for data verification to ensure the accuracy of the backup data. The AES-256 encryption process includes the following steps: Generate a new key from the quantum key distribution before generating the data packet; Data packets are encrypted with a new key, ensuring that the encryption of each data packet is independent and unpredictable.

[0045] The system uses low-power wireless communication protocols (such as Bluetooth Low Energy) for data transmission, significantly reducing power consumption without sacrificing communication quality. Assuming each data packet is 256 bytes, the communication module consumes 10mW, each communication session lasts 50 milliseconds, and the system performs 12 communications per hour, the power consumption is: ;

[0046] The smart lock's built-in control unit enters a low-power sleep mode when there is no operation. The system will retain only the minimum monitoring functions to further conserve battery power. Assuming the lock consumes 0.5mW in sleep mode and operates for 12 hours per hour, the battery consumption of the lock in 24 hours is: ;

[0047] The overall energy-saving strategy ensures that the battery can continue to operate for months or even longer.

[0048] When the battery level drops to a set voltage threshold (e.g., 2.8V), the system automatically switches to the backup battery to ensure continuous operation of the device. This threshold is optimized based on the battery type and expected operating time. The typical operating voltage range for lithium batteries is 3.7V (fully charged) to 3.0V (low charge). To ensure battery life and safety, an alarm is usually triggered when the battery level drops below 3.2V, and the system automatically switches to the backup battery when the voltage drops to 2.8V.

[0049] Assuming a lithium battery with a capacity of 3000mAh is used, and the device's average power consumption is 50mW, the expected battery operating time is: ;

[0050] Assume the device operates at 3.7V and consumes 50mW (0.05W): ;

[0051] With the battery voltage threshold set to 3.0V (when the battery capacity is approximately 50%), the system can continue to operate normally until the battery level decreases further. When the battery level drops to 50% (i.e., 3.0V), the remaining power will support approximately 4-5 days of use.

[0052] Battery voltage monitoring: Assuming the device uses a lithium battery as its main battery, the battery level is monitored via voltage measurement. When the battery level drops to a set voltage threshold (2.8V), the system automatically switches to the backup battery.

[0053] When the main battery voltage drops to a threshold, the battery management system controls the battery switching process. The main battery and the backup battery switch with the help of the current control module to ensure a seamless transition.

[0054] 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 variations 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. A networked, multi-functional smart lock system, characterized in that, include: The communication module exchanges data with smart devices through a quantum-encrypted communication protocol; The multi-factor authentication module includes fingerprint recognition, facial recognition, and dynamic password technology; The intelligent control unit automatically controls the door lock status based on user identity information and can be remotely controlled via smartphones and tablets; Backup battery module; The data protection module includes an encrypted storage module, an encrypted transmission module, and a data backup module.

2. The networked multifunctional smart lock system according to claim 1, characterized in that: The quantum-encrypted communication protocol for exchanging data with smart devices specifically includes the following steps: S1.1 Integrates a lightweight quantum key distribution unit into the smart lock terminal. The lightweight quantum key distribution unit is based on a simplified version of the BB84 protocol and generates and exchanges quantum keys through a miniaturized photon emitter and detector in the visible light band with a wavelength range of 650-850nm. Before each communication connection is established between the smart lock and the smart device, the lightweight quantum key distribution unit described in S1.2 performs a real-time quantum key negotiation to generate a one-time encryption key. This key is updated and used in the following ways: Knew = H(Kold||ran); Where H(·) is the hash function, Kold is the key successfully negotiated in the last time, and ran is the current random number; S1.3 During data transmission, a one-time pad scheme is used for data encryption, and each data packet is encrypted using an independently generated quantum key; S1.4 Sets up a security chip based on physically unclonable functions for mobile smart devices to cooperate with quantum key dynamic authentication; S1.5 employs a holographic encryption protocol and generates a hologram during quantum key transmission. The holographic encryption protocol encodes the photons generated by the quantum key into multi-dimensional holographic light signals. The light field of the hologram Given by the following formula: ； in: : Also, they are complex coefficients, representing each pattern The amplitude in the hologram, It controls the contribution level of different modes. Photon mode In spatial location The phase on the image, being part of the hologram, determines the phase difference of the photon mode at that location; different phases... Representing different spatial or optical modes, : Phase factor in exponential form, where It is the imaginary unit; The S1.6 communication module is equipped with a key expiration and update mechanism. When the smart lock detects abnormal channel noise or excessive interference, it immediately discards the current key and re-negotiates the quantum key.

3. The networked multifunctional smart lock system according to claim 2, characterized in that: Each key in the one-time pad scheme is used to encrypt a data packet only once, and the key length is equal to the data packet length.

4. The networked multifunctional smart lock system according to claim 1, characterized in that: The multi-factor authentication module performs authentication through the following steps: S2.1 provides a fingerprint recognition module that verifies the user's identity by scanning the user's fingerprint image and comparing it with pre-stored fingerprint data; S2.2 provides a facial recognition module that verifies the user's identity by capturing the user's facial image and comparing it with pre-stored facial feature data; S2.3 provides a dynamic password module, which sends a one-time password to the user's smart device and verifies the user's identity by comparing the one-time password entered by the user with the system verification result.

5. A networked multifunctional smart lock system according to claim 1, characterized in that: The encrypted storage module uses the asymmetric encryption algorithm RSA for encryption. The encrypted transmission module uses the quantum encryption protocol to encrypt and transmit sensitive data. The data backup module periodically backs up the encrypted data to the cloud server and ensures the integrity and consistency of the data. The backup module uses the hash algorithm SHA-256 for data verification.

6. The networked multifunctional smart lock system according to claim 1, characterized in that: The intelligent control unit automatically controls the door lock status based on user identity information, including the following steps: S3.1 Based on the user's permission level, control the door lock's unlocking and locking functions. The permission level can be set through user roles. S3.2 provides remote control functionality, allowing users to remotely unlock, manage authorization, and query historical logs via smartphones and tablets. The log recording module records all unlocking records and user activity information for subsequent review and management. S3.3 integrates with home automation systems, supporting the linkage of smart home devices.

7. A networked multifunctional smart lock system according to claim 5, characterized in that: The AES-256 encryption process includes the following steps: Generate a new key from the quantum key distribution before generating the data packet; The data packets are encrypted with a new key to ensure that the encryption of each data packet is independent and unpredictable.

8. A networked multifunctional smart lock system according to claim 1, characterized in that: The backup battery module automatically switches to the backup battery when the battery power reaches a set voltage threshold, ensuring that the system can continue to work. The low power design includes the use of a low power wireless communication protocol and an intelligent sleep mode.

9. A networked multifunctional smart lock system according to claim 2, characterized in that: When the channel noise exceeds a set channel noise threshold, the current key becomes invalid. The channel noise threshold is based on real-time signal quality assessment within the device to ensure that the key is updated promptly when the channel quality does not meet the encryption standard.

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