11results about How to "Realize secure transmission" patented technology

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 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.

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 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 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.