22results about How to "Realize secure transmission" patented technology

The invention relates to the technical field of financial data sharing, and discloses a financial data sharing system and method based on a block chain and federated learning, and the system comprises a block chain layer which records an operation log, a data access record and authority management information in a data sharing process through a distributed ledger technology, executes a data sharing protocol through a smart contract, and stores the operation log, the data access record and the authority management information in the data sharing process; a credible cooperation basis is provided for the federated learning layer; and a multi-chain architecture module in the block chain layer is used for supporting multi-source data interaction and realizing consistency of data sharing and intelligent contract execution among different block chain networks through a cross-chain communication protocol. The block chain technology and the federated learning technology are adopted, and distributed model training and data sharing are carried out on the premise that original data are not shared. The block chain layer records all data operation logs and authority management information, and ensures the security and compliance of data access through an intelligent contract.

The invention discloses a full-quantity identification analysis method and device based on a block chain and secure multi-party computing. The method comprises the following steps: step 1, setting an identifier structure; 2, trusted full-amount identification registration is carried out; step 3, multi-party key negotiation; step 4, threshold secret sharing; and 5, carrying out safety analysis on the full-amount identification. The device is used for realizing the method content. According to the method, the block chain and the threshold secret sharing algorithm are utilized, safety and credibility of industrial internet full-amount identification analysis are ensured, and malicious leakage of privacy data of the multi-party enterprise nodes is prevented by safely sharing the identification and the source data of the identification among the multi-party enterprise nodes.

The invention provides a three-layer message transmission method and system, and relates to the technical field of communication. The method comprises the following steps: receiving a three-layer message sent by first user equipment; obtaining a quantum key forwarded by the SDN controller, and generating a quantum session key by using a pre-generated original session key and the quantum key; encrypting and packaging the three-layer message by using the quantum session key to obtain a to-be-sent message; and forwarding the to-be-sent message to the target receiver routing device. According to the scheme, the router equipment of the sender encrypts and packages the received three-layer message by using the derived quantum session key to obtain the message to be sent, so that the quantum cracking resistance in the transmission process of the three-layer message is improved; and forwarding the to-be-sent message to the target receiver routing device, thereby realizing end-to-end quantum-level secure transmission of the three-layer message, and solving the problem that an attacker tampers the message or attacks the network device by counterfeiting message information.

The invention relates to the technical field of data security, in particular to a data security transmission method and device oriented to an account management system, and the method comprises the steps: obtaining various types of data in the account management system and the number of attacks to each type of data; determining the danger level of each type of data based on the data volume of each type of data and the attack times; determining an interaction value and an encryption strength value of each type of data; pre-selecting a plurality of chaotic mapping functions, and determining the chaos degree of the ciphertext after any type of data is encrypted by each chaotic mapping function based on the difference between the data chaos conditions before and after any type of data is encrypted by each chaotic mapping function and the difference between the data before and after encryption; and respectively selecting an optimal chaotic mapping function from the plurality of chaotic mapping functions when encrypting various types of data, and carrying out secure transmission on the various types of data. The invention aims to save computer resources on the basis of ensuring the data encryption strength.

The invention discloses a network information content encryption method and system and a storage medium, and the method comprises the steps: obtaining network data in network traffic in real time, and carrying out the data preprocessing, and obtaining the preprocessed network information data; calculating a single character value according to the network information data and obtaining an encrypted character set; according to the network information data and the encryption character set, constructing an encryption matrix of the network information data to obtain the encryption matrix of the network information data; according to the network information data, performing data classification through a preset network information data importance sensitivity table to obtain network information classification data; performing data relation analysis according to the encryption matrix and the network information classification data to obtain an encryption importance matrix; and performing data encryption and transmission according to the network information data and the encryption importance matrix. According to the method, flexible classification encryption can be carried out according to the importance and sensitivity of the network information data.

A multi-image encryption method based on superpixels belongs to the field of information security. Digital image information is easily leaked or tampered during Internet transmission, and the potential security risks are becoming increasingly serious. In order to ensure the safe and reliable transmission of multiple images on a network platform, the present invention proposes a multi-image encryption method based on superpixels. The method adopts the classic framework of scrambling and diffusion: in the scrambling stage, ordinary pixel-level scrambling and bit-level scrambling are adopted; in the diffusion stage, pixel plane decomposition and binary combination are used to expand the pixel depth of the image from 8 bits to 8 k Bits are combined to form superpixels, and then superpixel diffusion is performed to obtain the encrypted image. Experiments show that this method can encrypt multiple images at the same time, with good encryption effect, high security and fast encryption speed.

An Internet-based intelligent operation and maintenance management system for a smart park relates to the field of park operation and maintenance technology, including an intelligent operation and maintenance management platform, wherein the intelligent operation and maintenance management platform is communicatively connected with a data acquisition module, an operation visualization module, an identity authentication module, and a service request feedback module; the data of each Internet of Things monitoring node and a user terminal of the target park are collected and encrypted and uploaded to the intelligent operation and maintenance management platform; a digital twin model of the target park is constructed; the user's identity is authenticated according to the identity authentication data of the user terminal; the current scene information of the digital twin model is constructed, and the digital twin model is monitored in real time. At the same time, the real-time monitoring results are corrected according to the service request data of the safety situation report type, and the recommended driving route is fed back for the service request data of the traffic recommendation type. If the recommended driving route does not meet the requirements, the user feature matching mechanism is started to generate the best driving route, thereby improving the efficiency of park management and user experience.

The application discloses a kind of network unmanned aerial vehicle inspection achievement automatic back transmission and defect identification method, it is related to power distribution network inspection technical field.The purpose is to solve the problems of low efficiency, fault response lag, data transmission without security and defect identification relying on artificial in traditional manual inspection.The method comprises: unmanned vehicle carries unmanned aerial vehicle and hangar drives to parking point, unmanned aerial vehicle takes off and carries out inspection and collects achievement data;After unmanned aerial vehicle returns, unmanned aerial vehicle platform processes and transmits achievement data to unmanned aerial vehicle management platform;Management platform uses AI image recognition technology to identify defects in data, generates identification results;Finally, management platform synchronizes identification results to power grid digital brain platform, and is associated with equipment operating state storage.The application realizes the full-process automation and intelligentization of distribution network inspection, greatly improves the inspection efficiency and the accuracy of data processing, optimizes the fault response mechanism, and provides strong support for the intelligent operation and maintenance of distribution network line.

The embodiment of the invention provides an anti-quantum hybrid cryptographic gateway and a data transmission method, and belongs to the technical field of network security. The gateway comprises a quantum key management module used for obtaining a quantum key and a quantum random number generated by a quantum key distribution network; the entity authentication module is used for executing challenge response authentication on the communication terminal; the hybrid certificate management module is used for executing hybrid certificate authentication processing; the mixed key negotiation module is used for executing mixed key negotiation processing to generate a communication session key; and the encryption tunnel module is used for establishing an anti-quantum encryption communication tunnel based on the communication session key and executing encryption transmission processing of communication data through the anti-quantum encryption communication tunnel. According to the scheme, the anti-quantum encryption communication tunnel with a key derivation and quantum key dynamic refreshing mechanism is constructed, so that the transmission security and stability of the communication data in an anti-quantum attack environment are improved.

The present application discloses a data interaction method, device, system, electronic device and storage medium. The method includes: an external network server obtains the original data transmitted by the child application of the parent application; assigns tag information to the original data, and at least stores the first target data carrying the tag information in the cloud server, wherein the first target data in the cloud server can be directly read by the intranet server, and the intranet server stores the processing result of the first target data in the cloud server; queries the cloud server according to the query frequency whether there is a processing result of the first target data; if the query result is yes, returns the processing result of the first target data to the terminal device. The present application solves the technical problem that in the prior art, the intranet server needs to have an external public network IP and port during the interaction between the intranet and the parent network, which leads to security risks in the intranet system during the interaction with the external network data.

The present invention discloses a system and method for information security access point control, which relates to the field of intelligent network information security. The system includes a black and white list module, an access control module, a session control module and a log module. The black and white list module is used to create a white list and a black list of IP addresses, and based on the source IP address or the destination IP address in the data packet controlled by the access point, the data packet is released or blocked. The filtering policy control; the access control module is used to create an access control list for recording five-tuples, and based on the five-tuple of the data packet controlled by the access point, the data packet is released or blocked. The filtering policy control; the session control module is used to create a session control list for recording five-tuples. The present invention ensures the legitimacy of the direct data flow between the in-vehicle network and the out-of-vehicle network, and can also prevent the intrusion of illegal data flows outside the domain, while also ensuring that the legal data flow can flow in and out quickly.

A secure communication method for unmanned aerial vehicles (UAVs) based on anti-reflection / transmission intelligent metasurfaces belongs to the field of UAV wireless communication network resource allocation optimization technology. First, the optimal hovering position of the UAV is obtained through the principle of minimizing path loss. Second, given the UAV hovering position, in each iteration, three variables—active beamforming vector, STAR-RIS passive beamforming vector, and power allocation coefficient—are alternately optimized, keeping the other variables constant while optimizing one variable at a time. Third, the three sub-optimization problems are transformed into convex problems through successive convex approximation and Taylor expansion, and the optimal solution is obtained. Finally, the process is iterated until convergence to obtain the optimal solution for the entire problem. This invention is a design method for alternately optimizing parameters such as power allocation coefficient, active beamforming vector, and anti-reflection / transmission coefficient matrix during UAV hovering. This method can maximize the achievable speed of the system in the UAV network while meeting the minimum security communication rate requirements of the user.

The invention discloses an audio isolation device of a surveillance camera, an audio isolation circuit of the surveillance camera and a use method of the audio isolation device, and the audio isolation device comprises an audio input part, the audio isolation circuit and an audio output part, a primary coil and a secondary coil of each isolation transformer are respectively connected with an input interface of the audio input part and an output interface of the audio output part through signal lines. The isolation transformer of the audio isolation circuit can isolate an audio input signal from an audio output signal, thereby avoiding signal interference and loss.

The present invention relates to a multi-path end-to-end transmission system and application method based on air-to-ground communication, and belongs to the field of air-to-ground broadband communication. The system includes: an airborne server, which is responsible for negotiating with airborne users to establish connections, and scheduling user service flows to multiple channels through the calculation results of the algorithm of the load balancing unit; an air-to-ground channel simulation system, which configures channel parameters and displays the real-time performance of the channel from the interface, and provides an API for the airborne server, and sends channel status information to the load synchronization module; a ground gateway server, which receives service data streams from multiple channels, decrypts the data and updates the key held by the current channel, and reorganizes the data according to the SFN field of the protocol and forwards it to the ground user. The present invention adaptively schedules data through the load synchronization module to prevent channel congestion, and ensures data transmission security through the key update unit, thereby ensuring the stable transmission of airborne service data streams.

The present invention provides an active positioning security communication method based on joint detection, which is applied to a smart grid system. First, a base station identifies an eavesdropper through information fed back by a receiving end. Then, the coordinate information of the eavesdropper is calculated using a least squares algorithm through the positions of multiple base stations and a radio wave path loss model. Targeted defense measures can be implemented by locating the position information of the eavesdropper. Then, the antenna array of a non-communication base station points the beam to the eavesdropper by adjusting the phase and amplitude of each array element, and actively sends interference information to the eavesdropper, thereby reducing the risk of the network being attacked, improving the confidentiality of communications, and realizing secure transmission of smart grid signals. In addition, the active positioning security communication method of the present invention can be applied to line-of-sight and non-line-of-sight scenarios considering multipath effects, has a wider application scenario, and can provide reliable protection for the wireless communication security of smart grids.

The present invention belongs to the field of communication technology, and provides a video security transmission method and system. The method comprises: slicing the audio data to be processed in units of GOP to obtain video slices to be sent; encrypting and encapsulating each video slice to be sent through a custom private transmission protocol, specifically including constructing header information according to the video data type and data length, calculating verification parameters, and multiple rounds of encryption processing; and sending the encrypted and encapsulated video slices to the receiving end. The present invention effectively solves the risk of being monitored, intercepted, and cracked during the transmission of video data, thereby more effectively realizing the secure transmission of video data.

The present invention proposes a surveillance video security transmission system, method and device based on isolated transmission equipment, which belongs to the field of data transmission technology. The system includes: a task management subsystem and an audio and video proxy subsystem respectively deployed in an untrusted network domain and a trusted network domain, a physically isolated data exchange system arranged between the untrusted network domain and the trusted network domain, and used for cross-domain data interaction; a task management subsystem for proxy channel configuration, policy configuration issuance and log management; an audio and video proxy subsystem for receiving, processing and forwarding signaling messages and streaming media data according to the issued policy configuration; an audio and video proxy subsystem deployed in an untrusted network domain is connected to an IP camera, a hard disk recorder and a video access platform; an audio and video proxy subsystem deployed in a trusted network domain is connected to a video access platform. The present invention uses isolated transmission equipment and audio and video protocol proxy technology to achieve cross-network transmission of surveillance traffic.

The invention discloses an Internet of Things secure communication method. The method comprises the following steps: performing identity authentication on a communication node added to an Internet of Things system based on a block chain; in the Internet of Things system, identity authentication is performed before access between communication nodes; rI S auxiliary communication is carried out on trusted communication nodes, and the connection relation and performance of RI S are optimized by taking the secret communication data volume between the communication nodes as a target. The invention further comprises a system and a device for implementing the method. According to the application, the problem of threats from the Internet of Things eavesdropping nodes during communication between the Internet of Things nodes is solved.

The present application relates to the field of wireless communication, and especially relates to a low complexity concatenated modulation method for multi-mode symbol serial number modulation, a physical layer security transmission method and a computer readable storage medium. The low complexity concatenated modulation method for multi-mode symbol serial number modulation forms a concatenated multi-mode symbol serial number modulation mode. When processing an OFDM symbol period block, all frequency domain subcarriers are first divided into subblocks, each subblock is taken as a basic modulation unit, high-dimensional serial number modulation of one subblock is reduced to low-dimensional serial number modulation of two micro-subblocks in two-level concatenated serial number modulation, and the calculation complexity of modulation and demodulation at the transmitting and receiving ends is greatly reduced. Furthermore, in the physical layer security transmission, the dimension size of the first modulated micro-subblock is taken as a physical layer security transmission parameter, and dynamic change will make the same group of information bits get different output results after multi-level serial number modulation, reduce the cracking possibility, and realize the physical layer security transmission.

The present invention provides a method and system for secure data transmission of a charging device, and relates to the technical field of electric vehicle charging, wherein the method comprises: receiving an electric vehicle identification code sent by an electric vehicle after writing a first key, sending the received electric vehicle identification code to a management server, the management server generating a second key after receiving the electric vehicle identification code, and encrypting the second key according to the first key corresponding to the received electric vehicle identification code to generate a first ciphertext; receiving verification information sent by the management server, caching the second key, sending the received first ciphertext to the electric vehicle, the electric vehicle decrypting the received first ciphertext by the first key, obtaining the second key and caching it; receiving the second ciphertext sent by the electric vehicle after encrypting the first ciphertext using the second key, and verifying whether the cached second key is valid based on the second ciphertext. The present invention can realize secure data transmission and ensure that information of the charging device will not be stolen during information communication.

The invention discloses a data security access method and system across multiple security zones, and relates to the technical field of power dispatching automation, and the method comprises the steps: carrying out the communication service through at least one group of security access zones; multiplexing the data acquisition service of at least one security level area as a transfer service; and realizing data security access between the at least two security level areas through the security access area communication service and the multiplexed data acquisition service. According to the method provided by the invention, data access of a plurality of security areas can be realized by only deploying one group of security access areas, the system architecture is simplified, the management and maintenance cost is reduced, and the data acquisition service is reused as the transfer service, so that the deployment of additional transfer equipment is avoided, and the data transmission efficiency is improved. The three data transmission modes are respectively adapted to different service scenes and secure access area connection positions, and secure transmission of data among different secure areas is ensured.

The invention discloses a data storage and transmission security method suitable for an Android terminal. The method specifically comprises the following steps: creating an independent isolation space isolated from a main space on the Android terminal equipment, and deploying an enterprise application in the isolation space; implementing isolation protection on applications and data in the isolated space environment; encrypting and storing the data in the isolated space environment through the FBE by using a double-encryption key bound with the equipment screen locking password; performing application permission constraint and data access control on the isolation space; establishing an encrypted data transmission channel between the Android terminal and the security terminal; a data access auditing and monitoring mechanism is introduced, each access request for sensitive data is recorded, and a non-tampering log is generated. According to the invention, an omnibearing and deep defense data security access system is constructed, sensitive data stored on the Android mobile device by a user can be effectively protected, and security transmission of data between terminals can be realized.