139 results about "Protocol design" patented technology

The invention discloses a post-quantum TLCP protocol design method, device, equipment and medium, and relates to the field of information security, the post-quantum TLCP protocol design method is applied to a client, and the post-quantum TLCP protocol design method comprises the following steps: constructing client handshake information based on an information security technology transport layer cryptographic protocol, and sending the client handshake information to a server to receive returned server handshake information and establish connection; receiving a server-side digital certificate constructed based on the cryptographic algorithm encrypted public key information and the post-quantum key encapsulation algorithm public key information of the server-side and server-side key exchange information constructed based on the post-quantum key encapsulation algorithm and the cryptographic algorithm; and performing identity authentication based on the post-quantum digital signature algorithm public key information and the national cryptographic algorithm signature public key information to construct a pre-master key for data transmission. An active public key cryptographic algorithm and functions are reserved in an information security technology transport layer cryptographic protocol, and a post-quantum public key cryptographic algorithm is put into the protocol, so that the quantum security is realized while the active public key cryptographic security is realized.

Methods, systems, and devices for wireless communications are described. A network entity (e.g., a base station or reader) may transmit an initial access trigger message (e.g., modulating a continuous wave transmission using amplitude shift keying (ASK)), and the trigger message may include an indication of a type of passive user equipment (PUE) or a PUE use case (e.g., high priority / latency-critical PUEs or low priority / latency non-critical PUEs). A receiving PUE may harvest energy from the initial access trigger message for transmitting an initial access response message including an identifier for the receiving PUE. The receiving PUE may transmit the initial access response message (e.g., on one or more initial access resources) using the harvested energy if the trigger message indicates the PUE's type of PUE or PUE use case. In some examples, the receiving PUE may ignore triggers for different types of PUEs or PUE use cases.

The invention discloses a secure communication method and system based on a national cryptographic algorithm and an improved Modbus TCP protocol. The secure communication method comprises the steps that a host and a slave share an initial public key; the host and the slave establish TCP connection and generate random numbers based on the password module; signature verification is carried out on the random number by adopting a national cryptographic algorithm, so that security identity authentication between the host and the slave is realized; negotiating an encryption key between the host and the slave based on a national cryptographic algorithm; and the host and the slave perform data transmission based on the encryption key. According to the invention, a standard Modbus TCP protocol is improved, a security check domain is added so as to realize replay attack prevention, the SM2 asymmetric algorithm and the SM4 symmetric algorithm are combined to expand the national secret protocol design so as to ensure the confidentiality of data, and by configuring the cryptographic module for national secret authentication, the security of the Modbus TCP protocol is improved. And the functions of cryptographic operation, key generation, random number generation and the like of the host / slave are supported. Therefore, the safety compliance communication of the industrial system based on the improved Modubs TCP protocol is realized.

The invention discloses an unmanned aerial vehicle cluster encirclement tracking control method simulating pigeon flock limited neighbor interaction, and the method comprises the steps: 1, carrying out the kinematics modeling of an unmanned aerial vehicle and a target, and determining the initial states of the unmanned aerial vehicle and the target, and an expected encirclement configuration; 2, dividing the unmanned aerial vehicles in the cluster into information individuals and non-information individuals according to the acquisition authority of the target state, and artificially selecting directed connection from the information individuals to the non-information individuals by imitating a nearest neighbor interaction rule of the pigeon flock; 3, introducing communication distance limitation to delimit a non-information individual neighbor set; and the like. The method is easy to implement, the proposed pigeon inspired limited interaction neighbor selection rule can greatly reduce communication load in formation encircling control, control convergence speed is increased, and a robust solution is provided for topology construction in a communication limited environment and control protocol design for switching topology.

The embodiment of the invention provides a communication method and device based on graphic modeling, the historical protocol features are analyzed through a deep learning model, the protocol template data set is generated, and the intelligence of protocol design is realized. A graphical protocol design interface is innovatively designed, a communication protocol general block and a logic block are integrated, and a compatibility parameter matrix is introduced to realize intelligent connection correction. The system automatically generates a protocol analyzer, and network data streams are processed through a serialization function library and an algorithm function library, so that the accuracy and reliability of data transmission are ensured. According to the method, the limitation of traditional manual coding is broken through, and an efficient and intuitive visual solution is provided for communication protocol development.

The invention relates to the technical field of digital information transmission, in particular to a protocol stack fingerprint-based host asset surveying and mapping method, which comprises the following steps of: designing a host discovery algorithm of a combined multi-protocol data packet by referring to an open system interconnection seven-layer network model layering protocol; performing feature analysis and data preprocessing based on a protocol stack fingerprint rule base of a network mapper transmission control protocol, and constructing a protocol stack fingerprint data set of a host asset operating system; the host asset operating system fingerprint identification classification model is constructed based on the random forest algorithm, the coverage rate of survival host discovery is remarkably improved, and the limitation of a traditional rule-based matching method is effectively overcome. According to the method, the accuracy rate in the fingerprint identification task of the coarse-grained operating system reaches 97%, the weighted F1 value in the fingerprint identification task of the fine-grained operating system reaches 0.87, the technical level of host asset surveying and mapping is improved, and a more comprehensive and accurate technical path is provided for network asset security assessment.

The invention discloses an MAC (Media Access Control) protocol design method based on multi-objective optimization in an underwater acoustic sensor network, which comprises the following specific steps of: firstly, establishing a network model of the underwater acoustic sensor network; secondly, establishing a time slot model, and converting the propagation delay of the underwater sensor node and the water surface AP node into a time slot number; on this basis, a multi-agent reinforcement learning model is established, and a centralized training and distributed execution architecture is adopted. By adopting the multi-agent reinforcement learning method based on multi-objective optimization, the system throughput and energy efficiency in the underwater acoustic communication network are remarkably improved, and meanwhile, the problem of unfair resource allocation among nodes is effectively solved. By introducing a delay reward and priority experience playback mechanism, the intelligent agent can accurately update the strategy in a long propagation delay environment, and the learning efficiency is improved. According to the invention, the overall communication efficiency of the network is improved, and the adaptability and stability of the system in a high-delay complex environment are enhanced.

The invention provides a distributed function secret sharing key generation method aiming at the problems that an existing secret sharing key generation scheme depends on a trusted third party and does not support limitation of arithmetic sharing operation. The invention provides a solution for efficient distributed key generation based on improved function secret sharing between two communication parties. The protocol designed by the invention supports arithmetic sharing input and output, the calculation overhead and the communication overhead in the distributed key generation process are greatly reduced by optimizing the communication process on the premise of ensuring the safety and the accuracy of calculation, and the requirement on a trusted third party is completely removed by designing an efficient two-party calculation 2PC protocol, so that the communication efficiency is improved. A participant is allowed to directly generate keys for a distributed point function (DPF) and a distributed comparison function (DCF) through a two-party calculation protocol, the security and practicability of key generation are remarkably improved, and the method is particularly suitable for a scene without a trusted third party.

The invention belongs to the technical field of power grid data processing, and particularly relates to a power grid data interaction and auditing method based on multi-source heterogeneous distributed data, which comprises the following steps of: identifying and accessing data sources; designing a data authentication protocol; compressing the multi-source heterogeneous distributed data; constructing a representation model of the multi-source heterogeneous distributed data; performing data processing on the data of different data sources to extract data features; on the basis of a cross validation idea of deep learning, compressed data records of different sources are compared through an algorithm, and the data consistency is verified so as to evaluate the authenticity of the data; establishing an audit log and a chain structure; deploying auditing rules and algorithms; an evaluation mechanism of audit results; according to the method, a charging facility and power grid multi-source heterogeneous data high-performance sharing interaction model is constructed, heterogeneous interfaces and protocols, multi-type data representation and compression, cross check and auditing are supported, and high-throughput and high-concurrency data interaction and cooperative execution of multiple types of nodes are achieved.

The invention discloses a network protocol integrated development environment system based on a model context protocol MCP, and relates to the technical field of computer networks. The system comprises an IDE plug-in structure, a protocol analysis engine interface, a context awareness editing module, a user interaction interface and a collaborative view module. According to the method, a development tool is embedded through an IDE plug-in structure, a protocol analysis interface is called to carry out protocol structure identification and semantic modeling, and intelligent suggestions and semantic verification are provided in combination with context information in the protocol editing process. A user can carry out protocol structure editing and visual control through the interactive interface, and different roles can collaboratively carry out protocol design and verification tasks through the collaboration view module. The whole process forms a closed-loop mechanism from protocol modeling and semantic editing to context awareness suggestion, and high-intelligence and high-integration protocol development experience is achieved. The system significantly improves the efficiency and accuracy of protocol development, and is especially suitable for rapid prototype design and standardized development of complex network protocols.

The invention provides a KEM-based anti-quantum TLCP protocol design method and system, and belongs to the technical field of information security. The method comprises the steps that a server side applies for a server side signature certificate and an encryption certificate from an issuing mechanism, a long-term server side signature public key is stored in the server side signature certificate, and a long-term server side encryption public key is stored in the encryption certificate; and in the TLCP handshake protocol, identity authentication and key exchange between the server and the client are realized based on the long-term server signature public key and the long-term server encryption public key. According to the method, the anti-quantum KEM is used for replacing signature and encrypted primitives to realize key exchange and identity authentication functions of the protocol, identity authentication does not depend on the signature of a message any more, and meanwhile, a client introduces a temporary public key to replace a long-term static public key to participate in a KEM key negotiation process, so that the forward security of the protocol is ensured, and the security of the protocol is improved. Therefore, the efficiency and the security of the TLCP protocol are improved.

The invention discloses a time-triggered intermittent control protocol method for leadership following consistency of a multi-agent system, and the method comprises the steps: 1, constructing a multi-agent system which comprises a leadership and # imgabs0 followers; 2, constructing a time triggering mechanism; 3, constructing a mathematical representation form of the time-triggered intermittent control protocol; 4, constructing an error system; 5, establishing a sufficiency criterion of error system index stability; and step 6, proposing a time-triggered intermittent control protocol design method. The constructed mathematical expression of the time-triggered intermittent control protocol further comprises variables m and m1 to be designed in addition to a control gain matrix to be designed; when the exponential stability of the error system is established, the constructed mixed Lyapunov functional is irrelevant to the number of agents, and is only required to be positive definite at the sampling moment; the time-triggered intermittent control protocol method is provided by taking an intermittent ratio as a performance index, and the information transmission quantity between intelligent agents can be effectively reduced.

A sidelink-based positioning session is initiated by a user equipment (UE) with an indication that the positioning session will be a unicast session using a single protocol design that supports both Long-Term Evolution (LTE) and New Radio deployments. An initiator UE may provide an explicit indication to a target UE that the sidelink positioning session will be unicast using a unicast flag in an initial sidelink positioning initiation message or in a direct link establishment request message. The initiator UE may provide an implicit indication to a target UE that the sidelink positioning session will be unicast by initiating an Authentication & Security procedure, e.g., by sending a direct link authentication request, after sending the initial sidelink positioning initiation message.

The invention discloses an intelligent operation and maintenance communication method based on a JSON (JavaScript Object Notation) format, and aims to solve the problems of high complexity, low security and difficulty in extension of the existing protocol, so as to improve the reliability, speed and security of operation and maintenance of an intelligent power grid. The method is characterized in that an intelligent operation and maintenance system master-slave station communication protocol is based on a publishing / subscribing mechanism of an MQTT protocol, performs data exchange in a lightweight JSON format, and is suitable for data communication between an intelligent operation and maintenance master station and an intelligent operation and maintenance slave station; the identity between the master station and the slave station is verified through an SSL / TLS digital signature, so that the communication security is ensured; the protocol design comprises a management channel and a business channel which are respectively used for transmitting management data and business data of the model service and the asset service, so that the flexibility of data management is improved; by adopting the design concept of integration of the master station and the substation, configuration management and data synchronization are realized, so that the master station can monitor and manage the substations distributed at different places in real time, and the operation and maintenance efficiency and the response speed of the whole system are improved.

The invention relates to the technical field of information technology, in particular to a decentration-based peer-to-peer group social network system and a building method thereof, and the method comprises the following steps: setting network nodes, each network node having local data collection, primary processing and decision-making capabilities, the network nodes have self-organization and dynamic participation capabilities, the system adopts social communication protocol design, realizes data transmission among the network nodes through a wireless communication technology, supports flexible network node arrangement and communication coverage, adopts distributed data processing and storage, and is high in reliability and high in reliability. And the network nodes share data and carry out cooperative processing. Through autonomous interaction and data sharing among network nodes, the system can realize efficient resource utilization, real-time environment perception and dynamic decision adjustment, improve the resource allocation efficiency, realize real-time data acquisition and optimize dynamic environment response, and significantly improve the management efficiency and the user experience.

The invention discloses a TLS1.3 protocol security enhancement method and system based on a homologous cryptographic algorithm, and the method comprises the steps: 1), certificate generation: signing and issuing a certificate through an SQISign signature algorithm, and guaranteeing the verification and use of a post-quantum security signature algorithm through the certificate; and 2) protocol design: the client and the server complete identity verification through certificate verification based on an SQISign signature algorithm in a handshake stage of a TLS 1.3 protocol. And the server uses a FleS public key encryption algorithm to carry out key encapsulation and send the key encapsulation to the client, completes key exchange and establishes secure encryption connection with the client. The step 1) and the step 2) comprise compatibility design, and a homology-based post-quantum algorithm and a traditional cryptographic algorithm are allowed to coexist, so that the compatibility of an existing system is ensured. Through the method provided by the invention, the TLS 1.3 protocol can effectively resist security threats brought by quantum computing, the security of network communication in the quantum era is ensured, and meanwhile, the smooth transition of the existing system is ensured.

The invention discloses a Wreshark message analysis plug-in generation method and system, and relates to the technical field of computer networks, and the method comprises the steps: obtaining a designed protocol hierarchical relation graph; analyzing the protocol hierarchical relation graph by adopting a hierarchical relation graph analysis engine to obtain association and key contents of field values between hierarchies and in the layer, and analyzing a protocol design document by adopting a protocol design document engine to obtain a field set; taking the bit width of the data type in the Wireshark plug-in as a reference set, processing the bit width of a field according to a protocol field splitting algorithm, and marking the type and mask of the field to obtain a field set mask; building plug-in elements according to the field set masks; and generating a protocol analysis plug-in according to the hierarchical relation graph, the protocol design document and the plug-in element. According to the method, the plugin development threshold can be reduced, the problems of complexity and diversity of protocol design, uncertain fields and the like are solved, and the Wreshark message analysis plugin is efficiently, accurately and automatically generated.

The embodiments described herein implement a protocol decoder tool designed by a hardware engineer in a hardware description language (HDL) in a simulator tool for testing and / or in a signal analysis system for decoding protocols in real-time. For example, a user (e.g., hardware engineer, hardware designer, protocol designer) may design a protocol using an HDL and design a protocol decoder tool for decoding the protocol in the HDL. Register transfer level (RTL) files with protocol decoder logic in the HDL may be converted from the HDL to a second language by a converter, compiled into a decoder module by a compiler, and executed in a signal analysis system as the protocol decoder tool. As such, errors in misinterpretation of protocol specifications may be reduced.

The invention relates to a retrieval method and system for privacy protection under a large-scale data set, and belongs to the technical field of information technology and privacy protection. According to the technical scheme, firstly, a pre-screening protocol design method for ensuring user privacy security is provided, so that a system can quickly and accurately position a plurality of most similar data, and the response efficiency of similarity retrieval of privacy protection is greatly improved; and secondly, through a similarity retrieval method for privacy protection, the method can be adapted to any existing two-stage submission protocol, and the existing technology is fully utilized and compatible. Finally, parallel operation is adopted in the design of the protocol, it is guaranteed that the protocol can be equivalently transplanted to a GPU platform for operation, and the computing power of the GPU is exerted to the maximum extent.

The present invention discloses a Byzantine fault-tolerant method for efficient on-chain data editing in a consortium chain, which includes a data editing protocol and a request consensus protocol. First, the data editing protocol utilizes chameleon hashing technology and optimizes the underlying block replacement strategy to achieve efficient modification of block content and rapid updating of on-chain data, thereby improving the efficiency of data editing. Secondly, the request consensus protocol designs a consensus mechanism for block editing requests that is unaffected by malicious nodes. Through multiple rounds of voting and edit verification, it ensures that all honest nodes execute the same block editing operation, thereby maintaining data consistency between nodes in a Byzantine environment. Furthermore, the present invention introduces an optimization strategy for multi-node concurrent consensus, which significantly improves the response speed and throughput performance of the consortium chain system.

The present invention discloses an intelligent operation and maintenance communication method based on the JSON format, which aims to solve the problems of high complexity, low security and difficulty in scalability of existing protocols, thereby improving the reliability, speed and security of smart grid operation and maintenance. Its characteristics are as follows: the communication protocol between the master and substation of the intelligent operation and maintenance system is based on the publish / subscribe mechanism of the MQTT protocol, and adopts the lightweight JSON format for data exchange, which is suitable for data communication between the intelligent operation and maintenance master station and the intelligent operation and maintenance substation; the identity between the master and substation is verified by SSL / TLS digital signature to ensure communication security; the protocol design includes management channels and business channels, which are used to transmit management data and business data of model services and asset services respectively, thereby improving the flexibility of data management; the master and substation integrated design concept is adopted to realize configuration management and data synchronization, so that the master station can monitor and manage substations distributed in different locations in real time, thereby improving the operation and maintenance efficiency and response speed of the entire system.

Disclosed are a hybrid automatic repeat request-acknowledgment (HARQ-ACK) feedback method, a terminal, and a base station. The method includes: transmitting broadcast multicast scheduling signaling to a terminal for indicating the terminal to multiplex, when it is detected that a preset condition is satisfied, a first HARQ-ACK codebook corresponding to the broadcast multicast scheduling signaling on the uplink resource corresponding to unicast, the preset condition being that both a HARQ-ACK feedback slot indicated by the broadcast multicast scheduling signaling and a slot in which the uplink resource is located exist in a preset window; and receiving uplink data transmitted by the terminal through the uplink resource when the preset condition is satisfied, and obtaining a first HARQ-ACK codebook multiplexed on the uplink resource. The protocol design and complexity of HARQ-ACK feedback for broadcast multicast is simplified.

The invention discloses a light client communication method, system and device based on a consensus committee, and a storage medium, belongs to the technical field of block chains, and solves the technical problem that an existing light client protocol still has obvious limitations in the aspects of storage and communication overhead, security and consensus mechanism compatibility. The invention discloses a light client protocol compatible with various consensus mechanisms and having universality and security, the protocol designs a consensus committee dynamic election mechanism without a trusted third party based on chain quality attributes, and provides a concise and efficient proof generation normal form in combination with weighted multiple signatures. On the premise of not depending on a centralized relay, a light client protocol keeps communication and storage complexity lower than a sub-linear level, and security threats such as Eclipse attacks and the like are effectively defended.

The invention provides a differential navigation data framing transmission method which is characterized by comprising the following steps: S1, a frame synchronization module receives an input signal and judges whether a data frame header is a required data frame header; s2, taking a first byte behind a frame header of the data frame, and judging whether the data frame is valid or not; and S3, when the data frame is an effective frame and a plurality of data exist in the first-in first-out FIFO cache, reading is started, and reading is stopped until no data exist in the first-in first-out cache, so that transmission of the navigation data frame is completed. According to the differential navigation data framing transmission method, based on hardware design, link protocol design and reliability and safety design of FPGA firmware data framing, the validity of data transmission is confirmed by using a frame type flag bit in data, and once communication is established with navigation equipment, the whole link is kept in a communication state all the time.

A protocol designer for a test and measurement instrument, comprising an input to receive a signal, a memory configured to store the signal, an author configured to generate protocol definitions based on a user input, a debugger configured to output textual and visual decode results based on the protocol definitions and the signal, and a deployer configured to output a compiled protocol definition file to the test and measurement instrument.

The application relates to a data processing method and device. The method comprises the following steps: obtaining a to-be-processed task; the to-be-processed task comprises task data; determining an operation type corresponding to the to-be-processed task; the operation type at least comprises one of a data downloading type, a data storage type, a data access type and a data arrangement type; determining a space type to which a storage space related to the task data belongs; determining a target processing interface matched with the space type; the target processing interface is designed based on a communication protocol supported by the space type; calling the target processing interface, and operating the storage space based on the task data in an operation mode corresponding to the operation type, so as to execute the to-be-processed task. The method can improve the diversity of data operation.

The present application relates to a kind of privacy protection retrieval method and system under large-scale data set, belong to information technology and privacy protection technical field.The present application technical scheme includes: first, by proposing a kind of pre-screening protocol design method for guaranteeing user privacy security, make the system can quickly, accurately locate to most similar data, greatly improve the response efficiency of privacy protection similarity retrieval.Second, by a kind of privacy protection similarity retrieval method, can adapt to any one of existing two-phase commit protocol, make full use of and compatible with existing technology.Finally, the design of the protocol uses parallel operation, ensure that the protocol can be equivalently transplanted to GPU platform and run, maximum degree play out the computing capacity of GPU.

The invention provides a multi-protocol communication electric meter intelligent acquisition terminal, and relates to the technical field of intelligent electric meter acquisition terminals, the multi-protocol communication electric meter intelligent acquisition terminal comprises a hardware module, the hardware module is composed of an installation assembly and a positioning assembly, the terminal module adopts a multi-interface and multi-protocol design, the problem that a traditional gateway is difficult to be compatible with different protocol electric meters is solved, and the compatibility between the terminal module and the intelligent electric meter acquisition terminal is improved. Hybrid networking of old electricity meters and novel equipment is supported, the migration cost of a user is greatly reduced, a protective cover of a hardware module has two installation modes of quick assembly and disassembly, the terminal module can be installed and used in different environments while maintenance, overhaul and replacement operations of the terminal module are facilitated, and the terminal module is convenient to use. The problems that an existing acquisition terminal is insufficient in protocol compatibility and single in communication technology, and a protective cover is tedious to mount and dismount are solved.

The invention relates to the technical field of networks, in particular to an interpretation language generation method and device suitable for protocol decoding and a medium, and provides an interpretation language suitable for protocol decoding. The method supports the description of logic combination and complex nested structures, has strong expression ability and good readability, is simple enough in design, greatly reduces the manufacturing difficulty and reading difficulty of decoding scripts and the total amount of codes, and greatly shortens the development period. Meanwhile, in protocol decoding, each network protocol is regarded as a formal language, abstraction is carried out to describe most protocols, an interpretation language which is concise in design is designed to standardize and describe basic logic and combination of the formal language, a plain text protocol decoding script is used for replacing a traditional hard coding decoder, and a complete three-level grammar system of words, sentences and segments is constructed.

The invention discloses a cross-trust-domain trusted node credibility guarantee method and system based on a consensus mechanism, and the method comprises the steps: carrying out the preprocessing of collected trust information, including the extraction of corresponding trust data from each trust domain, cleaning and noise removal, standardization of a data format, and storage and management; constructing a cross-trust-domain trust evaluation model, calculating node behaviors and comprehensive trust degrees, performing mapping conversion on trust of cross-trust domains, and evaluating the credibility of nodes; designing a cross-trust-domain consensus mechanism, including establishing a local consensus protocol in each trust domain and designing a cross-trust-domain consensus protocol; realizing automatic execution of a cross-trust-domain consensus result by using an intelligent contract according to a preset rule; according to the method, the block chain technology, the distributed computing, the trust model and the security protocol are combined, so that the credibility and the security of each participating node in the cross-domain network are improved.