257results about How to "Uniqueness guaranteed" patented technology

The invention discloses a block chain-based digital right encryption management method and system, and relates to the technical field of digital right security management. According to the method, a unique identifier is generated for digital asset information through a Hash algorithm, data privacy is ensured by using asymmetric encryption, and asset uniqueness identification and information encryption protection are realized; according to the method, encrypted asset information is subjected to uplink evidence storage through an intelligent contract, node verification is carried out by adopting a consensus algorithm, tampering resistance, authenticity and transparency of the asset information are analyzed, authenticity of digital assets and safety and reliability of storage are guaranteed, legality of ownership transfer is verified through a consensus mechanism when the digital assets are transacted or transferred, and security and reliability of the digital assets are guaranteed. It is ensured that the transaction meets the preset compliance standard, the asset state on the block chain is updated in real time, and the security and compliance of the transaction are improved; the asset ownership history and the transaction path are tracked and recorded through the traceability mechanism of the block chain, and the traceability and transparency of the asset circulation process are realized.

The invention discloses a multi-person collaborative programming method and system, electronic equipment and a medium, and the method comprises the steps: providing a canvas task designer which supports the visual design of a plurality of canvases, and enabling each canvas to correspond to a subtask; sub-tasks designed in one or more canvases are stored as independent module files, and each module file can be developed by different developers; persistently storing the developed module file locally, and creating a module ID for the module file; and importing each module file into a unified project, and editing a data reference relationship and execution logic among the module files. According to the multi-person collaborative programming method and system, the electronic equipment and the medium provided by the invention, the whole project is divided into a plurality of independent sub-tasks through the canvas task designer, and each sub-task is stored in the form of the module file and can be independently developed by different developers.

The invention relates to the technical field of network security, and discloses a network information security encryption method, which comprises the following steps: step 1, a sender generates a pair of post-quantum asymmetric keys including a public key and a private key, the public key is used for encrypting a symmetric key, and the private key is used for decrypting the encrypted symmetric key; the sender sends the public key to the receiver through the secure channel, and verifies the authenticity of the public key of the receiver; and step 2, the sender generates a dynamic symmetric key based on a device identifier and a current timestamp, and the device identifier is used for uniquely identifying the device generating the key. A unique and unpredictable dynamic symmetric key is generated by combining a device identifier and a timestamp, the security problem that a traditional static key is easy to crack and abuse in long-term use is solved, in addition, a dynamic update triggering mechanism based on a time interval and a data volume is supported, key management has high flexibility and security, and the security of the key management is improved. And the encryption requirements in different network environments are met.

The invention provides a multi-course fusion knowledge graph construction and real question analysis method and system. The method comprises the following steps: carrying out knowledge point alignment operation, carrying out integration operation on cross-course knowledge points, carrying out quantitative analysis on the knowledge points by utilizing a cosine similarity calculation method, and identifying and aligning synonymous knowledge points in different courses; performing knowledge point disambiguation operation, and processing the situation that the knowledge points have the same name and different meanings to obtain integrated knowledge points and an integrated knowledge graph; performing knowledge point standardization operation on the integrated knowledge points, and performing standardization processing on the integrated knowledge graph to obtain standardized knowledge points and a standardized knowledge graph; converting the normalized knowledge points, extracting to obtain key features, and processing according to the key features to obtain semantic feature sequence vectors; matching to obtain a matching result and applicable knowledge points; and verifying and evaluating the matching result, and mounting the question to the corresponding knowledge point. The technical problems that the knowledge point extraction result is one-sided and the result accuracy is not high are solved.

The invention relates to the technical field of electric power data acquisition with an encryption function, and discloses an electric power data acquisition terminal with an encryption function and a method. By combining the environment data and the equipment state, the encryption process enhances the security and adaptability of data encryption. Environment and equipment data input ensures that encryption results are different, and potential safety hazards caused by static data sources are avoided. The data are reasonably combined through a seed generation formula, it is ensured that the seeds have enough randomness, and the brute force cracking risk is reduced. The key generation strategy generates a unique key through a seed, so that the attack resistance of the system is improved. The key matrix and random number generation strategy improves the unpredictability of the encryption algorithm. And dynamically updating the encryption matrix to prevent the encryption matrix from being cracked in long-term use. In the whole process, comprehensive protection of the data in acquisition, encryption and transmission is ensured, and the data is effectively prevented from being tampered or stolen.

A Chinese cabbage hybrid seed production marking method relates to the technical field of Chinese cabbage hybrid seed production. The technical scheme of the method is as follows: after Chinese cabbage hybrid seed production pollination is finished, firstly holding the pedicel of a pollinated flower with the left hand; then transversely tearing off two sepals from the root with the right hand, wherein light movement is required. The Chinese cabbage hybrid seed production marking method can perform marking without rope tying, ring arranging or stamp-pad ink coating, and is low in cost and high in accuracy.

The invention discloses a data compression method and device and a data decompression method and device.In the compression method, data to be compressed are processed according to a Huffman coding mode to obtain a first data table, then the first data table is standardized to obtain a second data table, and the second data table is compressed according to the Huffman coding mode. Obtaining a hierarchical table according to the second data table, obtaining serial numbers of all leaf nodes through a formula on the basis of the hierarchical table, outputting codes corresponding to the characters according to the serial numbers and depth of the leaf nodes, and compressing the data according to the codes; in the decompression method, decompression can be carried out only by acquiring the coding table or the weight table generated in the compression process of the data to be decompressed; and the Hoffman tree does not need to be traversed in the compression and decompression processes, so that the compression and decompression efficiency of the data can be improved.

The invention discloses a copper product quality defect traceability system and method. The system comprises a data acquisition module, a data processing module, a quality detection module and a defect traceability module. Relates to the technical field of copper product quality defect traceability, and solves the technical problem that quality defect information of a copper product is difficult to accurately obtain in the prior art. The method comprises the following steps: calculating a quality evaluation coefficient based on surface defect characteristics and performance data; integrating the quality evaluation coefficient and the basic information into traceability information; coding the traceability information based on a coding algorithm and storing the coded traceability information in a database; and performing defect traceability on the copper product based on the quality evaluation result and the traceability code. The performance standard-reaching rate is calculated according to the performance data and the preset performance standard, and the performance standard-reaching rate corresponding to each piece of performance data is multiplied by the corresponding proportionality coefficient to obtain the second evaluation coefficient, so that the performance of the copper product can be accurately reflected, and the quality defect tracing accuracy of the copper product can be improved.

The invention relates to the field of Internet of Vehicles communication, and discloses a block chain assisted multi-server authentication method and system based on a quantum key. The method comprises the following steps: a vehicle completes mutual authentication with a cloud server in a quantum key distribution network through a block chain, so that the vehicle obtains a rapid authentication certificate negotiated in advance by the quantum key distribution network; and when the vehicle needs to be authenticated with other cloud servers in the quantum key distribution network, the authentication is completed by verifying the consistency of the rapid authentication credentials. According to the invention, the vehicle and the cloud server are subjected to first authentication to obtain an anti-eavesdropping authentication certificate, and the vehicle can be quickly authenticated with other cloud server nodes through the certificate. In the authentication stage, the vehicle and the cloud server directly perform information interaction of identity authentication based on the assistance of the quantum key distribution network and the block chain, so that the problem of failure of the Internet of Vehicles system caused by a single-point fault is avoided. The identity authentication is safer and more reliable, and the authentication is faster and more efficient.

The invention relates to the technical field of access control systems, and discloses a multi-mode biological recognition access control system, a biological recognition module is used for collecting biological characteristic images of a user, and the biological characteristic images at least comprise a fingerprint image, a face image and an iris image; the data processing module is used for performing data processing and analysis on the biological feature image acquired by the biological recognition module, extracting an effective feature value, and obtaining a target feature image; the identity determination module is used for performing multi-mode identification on the target feature image to obtain an identification result, and performing comparison to determine the identity of the user; the control module is used for controlling the opening or closing of the access control according to the comparison result of the identity determination module; the storage module is used for storing a biological characteristic template and access control parameter information of a user; the communication module is used for carrying out communication and linkage with a mobile terminal in a wired communication or wireless communication mode; the safety of the access control system is effectively improved, and the accuracy of identity verification is improved.

The invention provides self-adaptive roller carrier equipment for a segmented different-diameter irregular barrel, and relates to the technical field of auxiliary equipment for circular seam welding of carbon steel and stainless steel barrels in the boiler industry. The self-adaptive roller carrier equipment comprises a machine base, a driving roller set and a driven roller set are symmetrically arranged on the machine base, and driving rollers at the two ends are used for supporting one end of the barrel; driven rollers are arranged at the two ends of the driven roller set and used for supporting the other end of the to-be-welded barrel; the distance between driving rollers at the two ends of the driving roller set can be adjusted so as to be matched with to-be-welded barrels with different barrel diameters, and the distance between driven rollers at the two ends of the driven roller set can be matched with to-be-welded barrels with different barrel diameters. A lifting assembly is arranged between the driven roller set and the machine base and used for adjusting the height of the driven roller set. The lifting assembly is in sliding fit with the machine base and is driven by the axial adjusting assembly, so that the lifting assembly drives the driven roller set to move close to or away from the driving roller set in the axial direction of the barrel to be welded.

The present invention discloses a method for dynamic simulation of flood inundation of digital twins of small and medium-sized watersheds based on UE5. It includes the following steps: step one: construct a two-dimensional hydrodynamic numerical model; step two: create a flood inundation simulation UE5 plug-in project; step three: create a flood role class; step four: construct a method for drawing triangular mesh primitives of flood models; step five: construct a method for rendering flood hydrological characteristics and flood flow patterns; step six: realize the dynamic simulation process of digital twin flood inundation. The present invention realizes the dynamic rendering and high-fidelity visualization of large-scale flood models in the three-dimensional scenes of digital twins of small and medium-sized watersheds, expresses the multi-dimensional flood inundation numerical simulation results such as water level, water depth, flow velocity, flow direction, as well as complex flood flow patterns such as backflow, convergent flow, bifurcated flow, floodplain flow, turbulence, etc., improves the authenticity and accuracy of flood inundation simulation, and is conducive to enhancing the decision-making support capabilities of flood risk assessment and flood control plans in small and medium-sized watersheds.

The invention provides a pick-up code generation control method of an intelligent express cabinet, and belongs to the technical field of intelligent express cabinets. Comprising an intelligent express cabinet and a pick-up code generation control method, the intelligent express cabinet is composed of an express cabinet hardware system, a background management system and a user terminal, and the express cabinet hardware system comprises an express cabinet main control system used for operation of the express cabinet and an electronic lock used for opening and closing a cabinet door of the express cabinet. The dynamic pick-up code based on the Hash algorithm is generated by combining multiple factors such as the user identity information, the express information, the cabinet number and the pick-up time, uniqueness can be ensured, safety can be enhanced, abuse of the pick-up code can be prevented by setting a time window and a verification mechanism, and therefore the safety and reliability of the system are improved, and the service life of the system is prolonged. And means such as dual identity verification and multi-factor authentication are added, so that the safety, convenience and high efficiency of the pickup process are ensured, and the property loss risk caused by leakage of pickup codes is avoided.

The invention provides a data sharing system and a control method thereof.The data sharing system comprises a shared memory management module, the shared memory management module comprises a resource management pool, and a plurality of shared memory management nodes used for distributing shared memories are arranged in the resource management pool; an index corresponding to a shared memory management node is transmitted to a second application program through a first application program, the second application program generates a file descriptor through the index, and the second application program can directly access a shared memory corresponding to shared memory information after creating mapping through the generated file descriptor. And the generated file descriptor can also be transmitted to the driving program, so that the driving program uses the shared memory corresponding to the shared memory information through the acquired shared memory information, and memory sharing between the plurality of processes and the driving module is realized by using the file descriptor.

The invention relates to the technical field of network security, in particular to a network protocol simulation method based on independent research and development, which comprises the following steps: S1, simulating a mainstream communication protocol and an application protocol in a protocol simulation mode; s2, interacting with a simulation protocol in a real protocol connection mode, and recording abnormal behavior connection information and command execution information content; s3, judging known contents for response by implementing protocol simulation; and S4, covering five categories of system service, database service, application service, industrial control service and Internet of Things service through a sensing protocol. The method has the advantages of being high in safety, good in stability, high in processing result accuracy, high in processing capacity and wide in coverage range.

The invention provides a method for generating a short chain, and a wireless communication method and device. The method for generating the short chain is applied to a server, and the method comprises the steps that a first short code is generated based on a random factor, a first message template identifier and a first data volume interval, the random factor is a random character string, the first data volume interval is any interval in a plurality of data volume intervals corresponding to a first message template for reading a letter, and the first message template identifier is a random character string; the first message template identifier is an identifier corresponding to the first message template; generating a first short chain based on a domain name and the first short code, the first short chain being any one of a plurality of short chains in the first data volume interval, and the first short code being an identifier of the first short chain; and based on the first short code, storing the first short chain and the dynamic data corresponding to the first short chain into a target database. According to the method, the uniqueness of the short chain is ensured, and the retrieval efficiency of the short chain is improved.

The invention discloses an unmanned aircraft and pilot management and control method and management and control system, and the method specifically comprises the steps: collecting the product identification information of an unmanned aircraft, judging that the product identification information is illegal if the product identification information cannot be obtained, and further judging whether the real-name registration is needed or not if the product identification information can be obtained; if the real-name registration information is needed, acquiring real-name registration information, if the real-name registration information cannot be acquired, judging whether the real-name registration information is illegal, if the real-name registration information can be acquired or does not need to be real-name registration, acquiring flight dynamic data to judge whether the flight dynamic data is in a suitable flight airspace range, and if the flight dynamic data is legal; otherwise, further collecting flight authorization information, and if no authorization exists, determining that the flight is illegal; and if authorization is obtained, judging whether the reported flight plan data is met, if not, judging that the flight plan data is illegal, and if yes, judging that the flight plan data is legal. The management and control system comprises a memory, a processor and a computer program capable of running on the processor and executing the management and control method. The method is wide in applicability and low in application threshold, the accuracy of legal / illegal identification can be greatly improved, and the management and control safety is improved.

The invention belongs to the technical field of lunar exploration space, and particularly relates to a manned lunar rover driving operation platform. The platform comprises a central processing module, a main display screen, an operation panel, a foldable force feedback control module, an auxiliary control panel, a sensing module and a voice control module. A comfortable and intelligent driving operation space is created for a lunar rover driver, intelligent perception and panoramic display of the surrounding lunar surface environment are provided, the driving experience is optimized, and the reliability and safety of driving operation are guaranteed.

The invention relates to the technical field of computer vision and three-dimensional reconstruction, and discloses a buckle searching and positioning method based on 3D model point cloud sampling matching, and the method comprises the steps: obtaining a modeling file data set, carrying out the point cloud sampling of an automobile housing part and a target buckle STEP, and obtaining a modeling file data set; and calculating the size and the moving step length of the point cloud segmentation window according to the geometric dimension information of the target buckle. According to the buckle searching and positioning method based on 3D model point cloud sampling matching, point cloud segmentation based on a sliding window is carried out, and the point cloud of a workpiece model is cut by adopting the idea of a convolution sliding window so as to adapt to the large and small resolution of a buckle; setting of a self-adaptive matching threshold: automatically determining the size and the step length of a sliding window by calculating a minimum bounding box of a buckle, and ensuring the precision of a matching process; the method has an effective duplicate removal mechanism: in a matching result, the uniqueness of each target point cloud window is ensured by sorting matching degrees and removing adjacent windows, so that the accuracy of the matching result is improved.

The invention belongs to the technical field of anti-counterfeit labels, and discloses a PUF pattern with a buckling layered structure and a preparation method of the PUF pattern. The preparation method comprises the following steps: spin-coating PDMS on a substrate, heating and curing, carrying out plasma treatment to obtain a PDMS film, further spin-coating a PVA aqueous solution containing NaB on the PDMS film, drying, carrying out ultraviolet crosslinking to obtain a PVA / PDMS double-layer film, dropwise adding an ethanol aqueous solution under specific heat treatment conditions, and spin-coating PDMS for pattern protection to obtain a PUF pattern which has a buckling layered structure, and has the characteristics of high strength, good mechanical properties, good mechanical properties and the like. The layered structure is a completely self-assembled process and has the characteristics of uniqueness, randomness, identifiability, physical unclonability and high stability. The preparation method provided by the invention has the advantages of simple process, easily available raw materials and lower cost, can be practically applied in the anti-counterfeiting field, and has huge market value.

The embodiment of the invention provides a client verification method and device and electronic equipment, and relates to the technical field of clients, and the method comprises the steps: obtaining a hardware fingerprint of a user terminal in real time under the condition that a verification probe is utilized to monitor a verification trigger event in the operation process of a client; under the condition that the verification trigger event is the first verification trigger event, obtaining a client identifier of the client; sending the hardware fingerprint of the user terminal and the client identifier of the client to a server, so that the server queries a historical binding fingerprint corresponding to the client based on the client identifier of the client, and verifies the hardware fingerprint of the user terminal based on the historical binding fingerprint of the client to obtain a first verification result; and receiving a first verification result fed back by the server. Therefore, the credibility requirements of various scenes on the client can be effectively met.

The embodiment of the invention provides a data processing method and device, electronic equipment, a storage medium and a program, and the method comprises the steps: responding to a data query instruction, and obtaining global index information; obtaining target time sequence information from a preset time sequence database according to the data block index; and obtaining target sampling data according to the target data block and the position index information. By creating global index information, index index data capable of being reused by sampled time series data are unified and integrated, and only index data changing in corresponding time needs to be stored in each data block based on local index information, so that when the index data are archived and compressed, the index data written into a disk can be reduced, and the efficiency of archiving the index data is improved. Storage control is saved, index data read from a disk can be reduced during data query, and the purpose of improving query efficiency is achieved.

The invention discloses a chip debugging function control method and system, electronic equipment and a storage medium, and belongs to the technical field of electronic chip debugging. The chip debugging function control method comprises the following steps: if an authorization request transmitted by target equipment is received, generating a random number, and encrypting the random number to obtain a random ciphertext; wherein the target equipment is debugging equipment or a server; sending the random ciphertext to the target device, so that the target device adds a decryption result of the random ciphertext to an authorization certificate; receiving the authorization certificate sent by the target equipment, and verifying the authorization certificate; and if the authorization certificate passes the verification, adding an identifier of the chip to the authorization certificate, and starting a debugging function of the chip by using the authorization certificate, so that the debugging device debugs the chip. In conclusion, the safety of chip debugging can be improved.

The invention discloses a signature and verification method and device, equipment and a medium, and relates to the technical field of digital signatures, and the method comprises the steps: randomly selecting a first random number from a first preset addition cycle group, enabling the first random number to serve as a signer private key, and determining a signer public key according to a preset system parameter and the signer private key; determining a signer label according to the signer private key and a preset system parameter, and generating a target linkable ring signature corresponding to the target message according to the preset system parameter, the signer label and a target public key set containing a signer public key; and sending the target message and the target linkable ring signature to a signature verification end, so that the signature verification end performs correctness verification on the plurality of linkable ring signatures corresponding to the plurality of received messages, and determines a linkable signature based on the target linkable ring signature. Thus, it can be ensured that the linkable ring signature is independent of the group, and then the linkable signature from the same signer can be determined in any case.

The invention discloses a distributed service change event processing method, which comprises the following steps: continuously acquiring change events from an upstream service, and generating a corresponding version number for each newly acquired change event; associating and storing the change event and the corresponding version number into a first data set, wherein the first data set adopts a key value pair structure; continuously monitoring the state of the downstream service processing change event; when the notification that the downstream service finishes processing the first change event is monitored, the version number of the first change event is recorded into a second data set, and the second data set adopts a key-value pair structure; and determining a to-be-processed second change event of the downstream service based on the first data set and the second data set at least under a preset condition. According to the embodiment of the invention, a high-availability change event processing scheme is provided, and the change event can be prevented from being lost under the condition of a short-time high-intensity change event.

The invention relates to the technical field of cryptography and information security management, in particular to a multi-system password security management method based on equipment authentication, which comprises the following steps of: generating a unique identity and identifier through a double-identity participant authentication mechanism, and generating an equipment initial password by using a homomorphic encryption algorithm based on lattice cryptography; potential safety hazards and management vulnerabilities in the prior art are effectively overcome, according to the method, the device identity identification and the initial password are bound and stored, the reliability of identity authentication is improved, and the safety of the device is effectively improved; meanwhile, the device password is dynamically updated based on the space-time behavior characteristic matrix and the environment factor, and the safety and the flexibility of the system are further improved; in addition, a zero-knowledge certification mechanism is adopted to carry out equipment identity verification, and hierarchical authority management based on attribute encryption is combined, so that the collaborative security and management efficiency among multiple systems are enhanced.

The invention provides an efficient and stable wireless charging method suitable for a pressure-bearing lithium battery, and solves the problems that an existing maximum efficiency tracking control method has the defects of being high in time complexity, low in solving speed and low in maximum tracking speed, and the charging process is inaccurate due to the fact that parameters of the pressure-bearing lithium battery are affected by pressure. According to the invention, the improved perturbation observation-golden section algorithm is adopted to realize rapid maximum efficiency tracking and stable control of the pressure-bearing lithium battery. The method comprises the following steps: firstly, comparing a current solution with a previous solution and a next solution, and if the current solution is superior to the previous solution and the next solution at the same time, determining an interval in which an optimal solution is located; secondly, maximum efficiency tracking is carried out through a golden section search algorithm; the time complexity of the golden section search algorithm is generally O (log n), and n is the dimension of a solution space. Therefore, the high-efficiency stability of wireless charging of the pressure-bearing lithium battery can be improved to a certain extent by adopting the perturbation observation-golden section method.

The invention relates to a random NAT (Network Address Translation) mechanism implementation method based on IPv6 (Internet Protocol Version 6) addresses, terminal equipment and a storage medium. The method comprises the following steps: S1, presetting an IPv6 secondary throwing pool with multiple groups of IPv6 addresses; s2, when an extranet access request sent by an enterprise internal client is obtained, an NAT source address is randomly selected from the IPv6 secondary throwing pool, and the extranet access request comprises a real IPv6 address of the enterprise internal client; s3, replacing the real IPv6 address of the enterprise internal client with the NAT source address randomly selected in the step S2 to generate a new extranet access request to communicate with the extranet; and S4, when a network data packet returned by the extranet is obtained, forwarding the network data packet to the corresponding enterprise internal client according to the internal mapping relationship, and by the method, when the enterprise internal client initiates extranet access, the concealment and security when the intranet terminal accesses the extranet can be improved.

The invention discloses an intermediate-frequency surface shape white light interference splicing measurement method based on polynomial filtering. The method comprises the following steps: carrying out white light interference splicing measurement on an X-ray plane mirror to obtain a group of interference measurement surface shape results with overlapped adjacent sub-aperture space positions; fitting the surface shape result of each sub-aperture by using a Legendre polynomial to obtain a polynomial coefficient under a preset order; fitting according to a polynomial coefficient to generate a fitting surface shape of a corresponding order, and subtracting the fitting surface shapes of all orders from the measurement result to obtain a group of surface shape results subjected to Legendre polynomial filtering; and splicing the filtered shape results according to a least square algorithm to obtain a final measurement result. The method aims at meeting the splicing measurement of sub-nanometer PV precision required by the intermediate-frequency surface shape error detection of the X-ray plane mirror, the least square optimization splicing method is used, the method is not limited by the low-frequency characteristic of the measurement error of the white light interferometer, and the precision and flexibility of the splicing measurement are improved.

The invention provides a rapid maximum efficiency tracking control method and system for a wireless charging system, and solves the problems of high time complexity, low solving speed and low maximum tracking speed of an existing maximum efficiency tracking control method. According to the method adopted by the invention, firstly, a current solution is compared with a previous solution and a latter solution, and if the current solution is superior to the previous solution and the latter solution at the same time, an interval in which an optimal solution is located can be determined; secondly, maximum efficiency tracking is carried out through a golden section search algorithm; the time complexity of the golden section search algorithm is generally O (log n), and n is the dimension of a solution space. The solution space dimension is generally greater than 1, and O (log n) is less than O (n) at the moment, so that the maximum efficiency tracking speed can be improved to a certain extent by adopting the perturbation observation-golden section method.