19results about How to "Guaranteed legality" patented technology

This invention belongs to the field of identity authentication in the Internet of Vehicles (IoV), specifically relating to an anonymous batch authentication method for IoV commuting environments. The invention includes: constructing an IoV system comprising a Trusted Authority (TA), roadside units (Roadside Units), and vehicles; publishing and initializing system parameters; vehicles and Roadside Units pre-registering and verifying their identities with the TA; the TA verifies the identity, calculates and returns key parameters and a pseudonym; vehicles calculate their complete private and public keys based on the returned parameters and send a verification message to the TA; the TA verifies the identity and creates a vehicle authentication schedule; commuting vehicles initiate authentication to Roadside Units (Roadside Units) on the commuting route; the Roadside Units receive the message broadcast by the vehicles, verify the legitimacy of the vehicle requests using the vehicle authentication schedule, and complete the authentication. This invention ensures anonymous and secure communication among entities in the IoV system and reduces computational and communication overhead, thereby improving authentication efficiency.

The invention discloses a storage resource management method for cloud edge collaboration and a program product. The method comprises the following steps: acquiring multiple target storage resource parameters of a target edge node at multiple moments, and determining a first capacity quota of the target edge node according to the multiple target storage resource parameters at the multiple moments; generating a first token according to the first capacity quota, generating a first signature according to the first token, sending the first token to the target edge node, and receiving a second signature and a first storage resource sent by the target edge node, the first storage resource being determined according to the first token, the generation mode of the second signature is determined according to the generation mode of the first signature; and writing the first storage resource of the target edge node into a cloud resource scheduling center based on the first signature and the second signature. By analyzing the storage resource data of the edge nodes, more reasonable and effective storage resource allocation is realized, and the stability of the cloud edge collaborative system is effectively guaranteed.

The invention discloses a key distribution method based on a hierarchical hash chain. The method is used for a password management service platform, and comprises the following steps: generating a session key and a key identifier according to a received session key generation request sent by a first terminal, and sending the session key and the key identifier to the first terminal; receiving a session key acquisition request sent by the second terminal, and verifying the validity of the identity of the second terminal according to verification information submitted by the second terminal; and under the condition that the verification is passed, issuing the session key to the second terminal. Thus, the service platform generates the first Hash chain fragment bound with the terminal permission, so that the password management service platform not only can verify the authenticity of the terminal identity during verification, but also can accurately verify whether the terminal has the legal key application permission, thereby effectively blocking the path of applying for the session key by stealing the key identifier by an illegal user, and improving the user experience. And the risk that the session key is illegally stolen is reduced, so that the security and reliability of encrypted communication between the terminals are ensured.

The application provides a data cross-chain transmission method based on multi-signature proof, relates to the technical field of blockchain interoperability and cross-chain trusted transmission, and performs data update on a sending log list based on a cross-chain set of a message source chain, obtains broadcast log data and performs broadcast sending; a signer set is determined according to a heterogeneous chain type of the message source chain, a checkpoint of the broadcast log data is constructed based on the signer set; the checkpoint is subjected to hash calculation to obtain a checkpoint hash, the checkpoint hash is subjected to threshold signature according to the signer set to obtain a final certification; transmission data is obtained according to the checkpoint and the final certification, message verification is performed based on the transmission data on a target chain to obtain a verification result, the checkpoint containing the sending message can be subjected to threshold signature according to the blockchain, and the verification efficiency of cross-chain data verification is improved.

The invention discloses a Beidou global short message communication bidirectional authentication method, which enables a satellite and a user terminal to be mutually authenticated, ensures the legality of the satellite and the terminal participating in communication, and belongs to the technical field of navigation satellites. The method provided by the invention is divided into a first access authentication process and an authentication process after switching the visible relationship between the satellite and the user, the Beidou No.3 global short message service is fully utilized, the security is higher, and the authentication after switching is realized through cooperation among satellites, so that the problems of high protocol overhead and increased delay caused by visible switching are avoided.

The application provides a SQL statement processing method and device and electronic equipment, and relates to the technical field of databases. The method comprises the following steps: obtaining an untyped syntax tree of a SQL statement; the untyped syntax tree comprises a plurality of nodes; determining a target node to be bound in the plurality of nodes according to a pre-obtained node binding sequence diagram; determining a previous node of the target node according to a node reference relationship diagram; obtaining a virtual table of the previous node; binding the target node based on the virtual table of the previous node, and determining a next target node to be bound until the binding of all nodes, so as to convert the untyped syntax tree into a typed syntax tree. The device is used for executing the above method. The SQL binding process in the SQL compiling process is independently implemented, and during the binding, the data type assignment and semantic verification are implemented according to the virtual table of the previous node. Since the binding methods of each node are the same, the code complexity can be reduced, and the expansibility and maintainability of the code are improved.

According to the behavior analysis-based application protection system provided by the invention, a collaborative protection system integrating environment perception, script security execution, token management, agent identification and behavior analysis is constructed, and fusion analysis of multi-dimensional risk information is carried out by a dynamic interception decision engine; omnibearing, deep and active security assessment and protection of client environment credibility, user operation legality and network request authenticity are realized, and the accurate recognition and dynamic response capability of the system in the face of complex automatic attacks and identity forgery attacks is effectively improved. And meanwhile, the interaction experience of legal users is optimized on the premise of ensuring the safety.

The application discloses a virtual role behavior action prediction method and system based on a neural network, which introduces physical rules in the form of executable codes and semantic constraints in the form of hot update rule tables for double checking after model output; under the premise of not retraining the model, the mechanism of combining the high generalization ability of the neural network with the certainty of the rule engine effectively guarantees the legality, rationality and authenticity of the virtual role behavior; through integrated Grad-CAM or SHAP feature attribution analysis, a logical link from environment perception to behavior execution is established, so that the developer can accurately quantify the contribution of position and posture factors to the decision, and through the introduction of controlled disturbance at the input end, the stability is screened, so that the parameters can still remain stable under abnormal interference, and the role jitter and collapse caused by network fluctuation or abnormal operation online are avoided, and the engineering reliability of the system in a complex interactive environment is greatly enhanced.

This application provides a method and system for processing multi-source heterogeneous data, an electronic device, and a storage medium. The method includes: a data access layer initiating a mode request to a metadata service before sending a message to a message bus via a target component, wherein the target component is one of the following: an adapter or a processing component; the metadata service responding to the mode request sends constraint information corresponding to the target component to the target component, wherein the constraint information includes: field rules and type constraints; the target component verifies the acquired target source data according to the constraint information, and if the target source data satisfies the constraint information, pushes the target source data to the message bus; the message bus persistently stores the target source data. This application solves the technical problem of poor overall system stability and reliability in related technologies.

The invention relates to the technical field of data security, and provides a railway locomotive operation and maintenance data security management method, device, equipment and medium, and the method comprises the steps: based on a preset node network, employing a hierarchical network architecture to operate a Byzantine fault-tolerant consensus mechanism, and carrying out the consistency processing of a railway locomotive operation and maintenance data block written into a block chain; the method comprises the following steps: for an entity in a railway locomotive operation and maintenance system, generating a unique decentralized identity identifier (DID) based on a first cryptographic algorithm, and signing a document comprising the DID and an entity public key by using a digital signature algorithm so as to construct a target identity management system; and when a data operation instruction is received, verifying the identity credibility of the operation initiator by using the target identity management system, and performing fine-grained access permission verification on the data operation instruction based on a preset permission rule. According to the invention, safe sharing, credible tracing and efficient cooperation of the operation and maintenance data of the railway locomotive can be realized, and the intelligent operation and maintenance level of the railway locomotive is improved.

The invention relates to the technical field of security house intelligent supervision, and discloses a security house subleasing and lending interception method based on person and certificate verification and behavior analysis, and the method comprises the following steps: S1, collecting the biological characteristic information and identity card information of a tenant when the tenant checks in, performing real-time verification and strong binding on the biological characteristic information and the identity card information through a management platform, and setting the successfully bound biological characteristic information as the primary door opening authority of the tenant; according to the method, biological characteristics are strongly bound with people and certificates, so that masquerading and permission lending are completely eradicated; data are collected by the intelligent door lock, the management platform analyzes abnormity, automatic all-weather supervision is achieved, and cost reduction and efficiency improvement are achieved; early warning is carried out through behavior analysis, authority is dynamically adjusted, and beforehand prevention and in-event interception are achieved; multiple key links are linked to construct a closed-loop system, rent payment reminding is enhanced, the house resource utilization rate is improved, and house management refinement and compliance are comprehensively improved and guaranteed.

The application belongs to the technical field of PLC, and particularly relates to a static analysis method, system, device and medium for PLC program, the method comprising: acquiring program code currently compiled by a user, and splitting the program code into a plurality of lexical units; analyzing the syntax structure of the program code according to all the lexical units, and constructing a corresponding abstract syntax tree according to the analysis result; and parsing the abstract syntax tree according to a preset code detection target to obtain a corresponding parsing result. The application can analyze whether the program code compiled by the user is compliant in real time, and timely remind the user to modify or automatically repair, thereby reducing the workload of the user, guaranteeing the legality of the program code, and effectively avoiding the situation that the user needs to recheck and verify all the program codes when the program code is abnormal.

The application is suitable for the technical field of intelligent sign-in, and provides a face sign-in method, system and device, intelligent equipment and a storage medium. The method is applied to a supervision device, and includes: acquiring a face image, vehicle information of a vehicle and identity information of a user, wherein the face image, the vehicle information and the identity information are uploaded after being collected and processed by a mobile device calling a specified application program; verifying whether the user and the vehicle match according to the vehicle information and the identity information; if the user and the vehicle match, updating an image database based on the face image, the vehicle information and the identity information, and the face image stored in the image database is used for face sign-in by a vehicle-mounted device. The method can guarantee the legality and effectiveness of the photo used for face sign-in comparison on the vehicle-mounted device, and further guarantee the timeliness and accuracy of face sign-in.

The application provides a network access method and device, equipment, medium and program product, relates to the network technical field, and is used for improving the trusted protection capability of the network. The specific technical scheme is as follows: receiving an authentication result sent by an access authentication and authorization network element, the authentication result being used for indicating that a terminal device passes identity authentication; obtaining trusted evaluation certification information of the terminal device from the terminal device; sending a remote evaluation request to a remote certification server, the remote evaluation request being used for requesting the remote certification server to perform trusted evaluation on the terminal device based on the trusted evaluation certification information; receiving a trusted evaluation result sent by the remote certification server, the trusted evaluation result being used for indicating a trust state of the terminal device, and the trust state including a trusted state; and in the case that the trusted evaluation result indicates that the trust state of the terminal device is the trusted state, allowing the terminal device to access the network. The application is applied to the scene of terminal device accessing the network.

The invention discloses a lightweight two-way authentication method and system for an intelligent water affair Internet of Things terminal, and relates to the field of two-way authentication, and the method comprises the steps: presetting a terminal static identifier and a main / auxiliary hash chain initial value; the terminal generates a new main Hash value and a new auxiliary Hash value through Hash calculation based on a previous state of a local Hash chain, generates an identity label by using a Hash function in combination with a self-generated random number, and sends the identity label, a static label and the random number to the server; the server obtains the previous state of the corresponding Hash chain through the static identifier, and reconstructs the identity identifier through the same process for verification; after passing, updating a local hash chain state, generating a server random number, generating an authentication message in combination with the new main hash value and the two random numbers, and sending the authentication message; the terminal verifies the server to authenticate the message, and updates the own hash chain state after passing the authentication; the two parties generate a session key through a key derivation function based on the new main hash value and the two random numbers. The invention provides a safer session key generation mode.

The invention relates to the technical field of power data regulation and control, and provides a power data access control method, device and system and a medium. According to the implementation scheme, a power data access request of a user is responded, request data carried in the power data access request is verified, and a verification result is obtained; if the verification result is that the verification is passed, automatically triggering a context information collection interface to collect multi-dimensional power data of the user so as to generate a multi-dimensional feature vector of the user; performing anomaly detection on the multi-dimensional feature vector through a pre-trained anomaly detection model to obtain an anomaly score; performing anomaly prediction on the multi-dimensional feature vector through a pre-trained classification model to obtain a risk probability value; and determining a target access strategy based on the request data, the business dimension data in the multi-dimensional power data, the anomaly score and the risk probability value, so as to execute a target action according to the target access strategy. According to the embodiment of the invention, intelligent security control on the power data access request can be realized.

The application discloses an alarm host virtualization control method and system based on face recognition, relates to the field of security protection, and comprises the following steps: calling a security topology map, performing topology constraint embedding processing on a target park alarm host virtual control engine to obtain a topology linkage control engine; receiving a user's operation request through a mobile terminal, determining a target security area to be accessed, collecting the user's face biological characteristics, obtaining an initial operation permission set through the topology linkage control engine; acquiring real-time topology running parameters, verifying each operation item in the initial operation permission set, and screening to obtain an effective operation permission set; generating a virtual operation interface and pushing it to the mobile terminal to receive the operation instruction triggered by the user; and performing secondary face biological characteristic verification on the user, and sequentially issuing entity protocol instructions to the corresponding target alarm host when the verification is passed. Through the adaptation of the park topology, the security, stability and traceability of the alarm host control are improved.

The application provides a DSL-based building information model generation method and an electronic device. The method comprises the following steps: generating an intention unit combination according to intention information; obtaining a context package according to a BIM model file, the intention unit combination, a knowledge source, and user identity information; determining input data according to a domain-specific language (DSL) template, the context package, and the intention unit combination; inputting the input data into a pre-constructed large language model; outputting a DSL file from the large language model according to the input data; performing multi-layer verification on the DSL file; if the verification fails, repairing the DSL file according to a verification result; if the verification passes, generating an intermediate representation according to the DSL file; and generating a building information model corresponding to the intention information based on the execution of the intermediate representation in an execution engine. The embodiment realizes a full-process closed loop of user intention and BIM model generation, and improves BIM modeling efficiency and data consistency.

The invention relates to the field of artificial intelligence and automatic planning, in particular to a large-scale planning problem solving method based on general knowledge of a large language model, and the method comprises the steps: analyzing a PDDL domain file and an instance file, and obtaining an initial state, a target state and an action model; the target state is disassembled into sub-targets in a directed two-tuple form, a directed acyclic dependency graph is constructed, topological sorting is carried out, and an ordered sub-target sequence is obtained; recursively traversing a sequence to generate a sub-problem, calling a planner to solve, and optimizing through LLM two modes if the sub-problem fails or is overtime; the mode A selects actions from an executable action sequence to compress a search space, and the mode B predicts an intermediate state to split an intermediate sub-problem; and finally connecting the sub-plans in series in sequence to generate an overall plan. The invention aims to solve the problems that the traditional planning method is high in search overhead, the sub-target sequence is difficult to determine and the LLM output is unreliable.