132 results about "Secure communication system" patented technology

The invention discloses a secret communication system of an unmanned aerial vehicle, which relates to the technical field of secret communication of the unmanned aerial vehicle and comprises a secret key generation and distributed storage unit, a dynamic secret key updating unit, a secret key destruction and tracing unit, a multi-band sensing and interference identification unit and a combined regulation and control unit. A dynamic key is generated through a chaos algorithm, and the security of the key is ensured in combination with block chain fragmentation storage and GPS binding encryption; updating the key according to the risk level, and transmitting the fragments by using an anti-quantum channel; after the communication is finished, the secret key fragments are invalidated, and anomaly detection and traceability are realized; scanning a multi-band frequency spectrum in real time, identifying an interference type and optimizing the model; and according to the interference intensity and the energy efficiency demand, dynamically switching the frequency bands, adjusting the power and enhancing the anti-interception capability. The problems that an existing unmanned aerial vehicle communication system is insufficient in safety, weak in anti-interference capacity, incomplete in key management mechanism and the like are effectively solved, and the safety, the anti-interference performance and the energy efficiency performance of unmanned aerial vehicle communication are remarkably improved.

The invention relates to a numerical control equipment cooperative scheduling method and system based on a heterogeneous computing architecture, and aims to solve the core problems of multi-brand numerical control equipment protocol isomerism, weak digital twin generalization ability, low multi-objective optimization efficiency, quantum era communication security and the like in the industrial internet. Real-time analysis and unified format conversion of 18 industrial protocols are realized through a PDSA-Chip hardware-level protocol conversion module; in combination with a transfer learning digital twinning technology, cross-brand equipment parameter self-calibration is completed within 72 hours; a quantum annealing and NSGA-III collaborative optimization algorithm is adopted, the machining parameter optimization period is shortened to 1 / 3 of that of a traditional method, energy consumption, precision and the service life of a tool are dynamically balanced, and the service life of the tool is prolonged by 37% in a high-load scene; an NTRU lattice encryption and chaos confusion fused anti-quantum security communication system is constructed, the G code confusion degree is larger than 98%, and SL3-level quantum attacks are defended.

The invention relates to the technical field of quantum communication security, and discloses a quantum key distribution secure communication system based on a quantum mechanics principle. The system comprises a quantum state preparation unit which controls a quantum emission device to output a quantum state sequence containing a preset polarization angle and a phase modulation photon group; a quantum channel feature extraction unit captures channel environment interference parameters and constructs a photon polarization distribution matrix; a quantum communication security evaluation unit receives the matrix, and calculates a channel security coefficient threshold through a quantum bit error rate analyzer; the quantum key dynamic optimization unit generates an optimized key segmentation strategy in combination with a security coefficient threshold and a historical key negotiation record; the quantum key rotation control unit switches quantum state modulation parameters according to a segmentation strategy and a time window; and the quantum node synchronization management unit monitors node clock offset and injects a calibration signal to realize key distribution time slot alignment. The system can dynamically cope with environmental interference, and improves the security and adaptability of quantum key distribution.

A communications system for providing secure access to a digital resource of a group of digital resources accessible via the internet, the system comprising: a data processing hub accessible via an IP (internet protocol) address; and a plurality of user equipment (UEs) useable to communicate via the internet, each configured to have a cyber secure isolated environment (CISE) isolated from ambient software in the UE, and comprising a secure web browser (SWB); wherein the hub and CISE are configured so that digital resources in motion and at rest in CISE are visible to the hub.

The invention provides a quantum security communication system, which comprises a quantum security service platform, a service terminal, a quantum security gateway and a service server, and is characterized in that the quantum security service platform is responsible for generating and distributing quantum keys, the service terminal is responsible for collecting service data, and the quantum security gateway is responsible for negotiating with the service terminal and establishing an encryption channel; when both the service terminal and the quantum security gateway receive the quantum key, the quantum security communication system enters a quantum encryption mode, otherwise, the quantum security gateway generates a classical key, the system enters the classical encryption mode, the quantum security gateway calls the corresponding key to decrypt encrypted service data, and the service terminal and the quantum security gateway send the decrypted service data to the quantum security gateway. And the business server is responsible for receiving the decrypted business data. According to the quantum secure communication system and method provided by the invention, the preferred encryption mode is the quantum encryption mode, and when the quantum encryption mode cannot be entered, the classical encryption mode can be automatically switched, so that secure communication is not interrupted, and the security and reliability of communication are improved.

The invention relates to an RIS auxiliary safety wireless communication system based on a channel knowledge map and an environment perception beam selection method. The invention relates to an RIS auxiliary secure wireless communication environment sensing beam selection method based on a channel knowledge map, which reduces the training overhead on the premise of ensuring the RIS auxiliary communication secrecy rate: considering an RIS auxiliary secure communication system, and obtaining position information and beam pairs corresponding to users in a region by using an environment sensing technology; using an abstract function to link a beam pair in a given environment with a user position, and storing the beam pair and the user position in a CKM; the method comprises the following steps: for a downlink of an RIS assisted secure communication system, selecting a required optimal beam pair from a CKM under the condition that the positions of a BS and an RIS are fixed; an eavesdropper is considered in a communication environment, the selected beam pair is input into an alternating optimization AO algorithm, and the alternating optimization AO algorithm is adopted to carry out iterative optimization on the beam to obtain a final beam pair; the algorithm complexity and the number of iterations are analyzed, and the optimization rate is improved.

A secure communication system enabling secure transport of information is disclosed. The system comprises a secure network with one or more packet processing units connected by links through an internal communication system. The secure network transports packets of information between credentialed and authenticated agents. Each packet is associated with a visa issued by a visa service. The visa specifies the procedures governing the processing of the packet by the packet processing units as it is transported along a compliant flow, between agents thorough the network, according to a set of policies specified in a network configuration. Packet processing units include docks and forwarders. Adaptors serving the agents communicate with the network through tie-ins to docks. The system also includes and admin service, accessible to one more admins, that facilitates configuration and management of the network.

A secure communication system is disclosed for communication between first and second party devices. An input interface is provided for receiving from an external host a unique host factor in addition to a user input interface for receiving from a user a unique PIN for a user and a selection input for selecting one of the plurality of stored entropy stores as a user selected entropy store A first private key generator is operable for generating a private key using a key generation algorithm requiring the selected entropy store, the host factor and the unique user PIN. The second party device includes a second storage device for storing a plurality of entropy stores. An input interface is provided for receiving the same unique host factor as received by the first party device. A communication interface facilitates communication with the first party device to receive from the first party device a user PIN and an indication of the user selected entropy store. A second private key generator is operable for generating a private key using the predetermined key generation algorithm with the received user PIN, the received host factor, and an extracted entropy store corresponding to user selected entropy store, wherein the private key generated by both the first and second private key generators are identical. The session is initiated to cause the generation of the identical private keys at both of the first and second private key generators and allow secure communication between the first and second devices. The private key at least one of the first and second devices is deleted at the end of the session.

The invention relates to a self-adaptive information negotiation method applicable to a continuous variable quantum key distribution system, which comprises the following steps of: estimating an optimal code rate that an LDPC (Low Density Parity Check) code should reach under a current quantum channel, converting an initial code rate into the optimal code rate by a receiver, and obtaining a low-reliability bit number l which needs to be disclosed in conversion calculation, the method comprises the following steps of: decoding an LLR (Local Library Ratio) by using Bob, sending the LLR to Alice through a classic channel in combination with an encryption technology, sorting absolute values of the LLR by Alice in a decoding iteration process, selecting l bit positions with low reliability, sending the bit positions to Bob, determining a bit value by Bob according to the bit positions with low reliability sent by Alice, and feeding back and sending the bit value to Alice, and correcting the LLR value by Alice according to bit information sent by Bob. According to the method disclosed by the invention, the code rate of the LDPC code can be flexibly adjusted along with the change of the state of the time-varying channel, and the negotiation efficiency is improved, so that the key rate of the system is improved. The method is excellent in performance in a time-varying channel environment, negotiation efficiency under a low signal-to-noise ratio condition can be remarkably improved, and an efficient and reliable information negotiation scheme is provided for practical application of a quantum secret communication system.

The invention discloses a secure communication system and a secure communication method for an STAR-RIS auxiliary rate division multiple access system. The system comprises a base station with M antennas; the STAR-RIS with N reflection units divides a communication area into a reflection area and a transmission area; the legal terminal devices serve as legal users, one part of the terminal devices are located in the reflection area, and the other part of the terminal devices are located in the transmission area; the illegal terminal equipment serves as an eavesdropper and is used for eavesdropping the confidential information transmitted by the base station to the legal terminal equipment in the reflection area or the transmission area; wherein the transmission beam forming vector of the base station and the phase shift matrix of the STAR-RIS are alternately optimized so as to maximize the lowest secrecy rate in the plurality of legal terminal devices. The invention provides a new solution for guaranteeing the security of a future wireless communication network, carries out research on the security performance optimization of the system, and can be widely applied to the technical field of wireless communication.

The invention discloses a secure communication system based on quantum key distribution, and relates to the field of encrypted communication, and the system comprises a key generation module which is used for generating a quantum key and synchronously forwarding the currently generated quantum key to a distribution module; the distribution module is used for receiving the quantum key generated in the key generation module, distributing the quantum key to users of both communication parties, synchronously detecting the transmission quality of the quantum signal and monitoring whether an eavesdropping behavior exists or not; the encryption module is used for receiving plaintext data from a sender, performing encryption processing on the plaintext data by using a quantum key and a one-time password book encryption algorithm, and converting a plaintext into a ciphertext; according to the method, the highly random and safe secret key is generated by utilizing quantum mechanical characteristics, the confidentiality of communication is fundamentally guaranteed, and the secret key generation mode is based on the unique property of the quantum state, so that the secret key is difficult to crack or steal.

A secure communication system is disclosed. Embodiments include automatically convert, using at least one processor and in response to the first feedback loop, the evaluation scores to updated evaluation scores. Embodiments include receive, using at least one processor coupled to memory, a second feedback loop from a third user in response to providing the updated evaluation scores to the third user. Embodiments include automatically convert, in response to the second feedback loop, the updated evaluation scores to transformed evaluation scores. Embodiments include provide one or more actions to at least one of the first user, the second user, and the third user based on the transformed evaluation scores and the clusters of similar variables, execution by at least one of the first user, the second user, and the third user of at least one of the one or more actions increasing at least one of the transformed evaluation scores.

The invention discloses an Internet of Vehicles secure communication system based on a quantum key. The system comprises a vehicle-mounted end, a roadside end and a cloud end. The vehicle-mounted end and the cloud end are matched and preset with multiple pairs of quantum keys and corresponding quantum key indexes; the invention further discloses an Internet of Vehicles secure communication method based on the quantum key, and the Internet of Vehicles secure communication method is realized based on the Internet of Vehicles secure communication system based on the quantum key. The invention discloses an Internet of Vehicles secure communication system and method based on quantum keys, a plurality of pairs of quantum keys and corresponding quantum key indexes are matched and preset at a vehicle-mounted end and a cloud end, and only the quantum key indexes instead of complete keys are transmitted through a lightweight index query protocol, so that the network load of the vehicle-mounted end can be reduced, and the security of the vehicle-mounted end is improved. The real-time performance of data transmission is greatly improved, and the vehicle is supported to maintain a stable safe communication rate during high-speed movement.

The invention discloses a cloud side collaborative security communication system, and relates to the field of security communication. The cloud-side collaborative security communication system comprises an edge device, an edge computing gateway, a security communication protocol and a cloud platform, and the edge device is responsible for real-time data acquisition and primary processing; the edge computing gateway is used as a bridge between the edge device and the cloud; the secure communication protocol adopts a hybrid encryption system to encrypt and authenticate a data transmission process; and the cloud platform is responsible for receiving data from the edge equipment. According to the cloud side collaborative security communication system, the hybrid encryption system combines the advantages of symmetric encryption and asymmetric encryption at the same time. The symmetric encryption algorithm is widely applied to data encryption due to rapidness and high efficiency, and the asymmetric encryption algorithm is famous in terms of high security, especially in the aspects of key exchange and data integrity verification. By combining the two, the hybrid encryption system can more effectively resist various attack means.

The invention discloses an implementation method of a sub-connection active STAR-RIS assisted secure communication system. A base station, a sub-connection active STAR-RIS, a legal user and an eavesdropping user are included. According to the invention, M units of STAR-RIS are grouped into L sub-arrays, and an amplifier is shared to reduce power consumption and cost; with maximization of system secrecy energy efficiency as a target, base station beam forming, STAR-RIS reflection / transmission coefficients and amplifier amplification coefficients are jointly optimized; and solving the non-convex optimization problem by adopting an efficient algorithm based on block coordinate descent. According to the invention, the hardware overhead and the system power consumption are effectively reduced through the sub-connection structure, meanwhile, the secure transmission efficiency of the system is remarkably improved through joint optimization, multiplicative fading is overcome, and an efficient and reliable solution can be provided for 6G secure communication.

The present invention proposes a RIS-assisted cognitive radio wireless security communication transmission method using partial CSI. In the RIS-assisted large-scale multi-input multi-output cognitive radio wireless security communication system, in order to enable the secondary transmitter and the secondary user to communicate with the main transmitter and the main user in the same frequency band, and to ensure that the interference of the secondary transmitter to the main user is within a certain threshold, the initial value of the RIS reflection coefficient matrix is ​​set, and the beamforming matrix is ​​designed using the partial CSI; the RIS reflection coefficient matrix is ​​designed using the partial CSI according to the beamforming matrix; the above operations are repeated until the system security rate converges. The present invention can effectively improve the spectrum efficiency under the premise of knowing the partial CSI, alleviate the spectrum scarcity problem in actual communication scenarios, and improve the security rate of the system.

The present invention is applicable to the field of device communication technology and provides an IoT group gateway secure communication system, comprising a server and device side. The server side includes a server-side PLC modulation module, a server-side PLC demodulation module, and a PLC-VLC conversion module. The device side includes a VLC photoelectric receiving module, a device-side PLC modulation module, and a device control module. The device-side PLC modulation module transmits a feedback signal to a PLC transmission line, and the server-side PLC demodulation module converts the feedback signal in the PLC transmission line into a data signal. The server-side PLC modulation module transmits the data signal to the PLC transmission line, and the PLC-VLC conversion module converts the high-frequency AC signal into a VLC spectrum signal. The VLC photoelectric receiving module receives the VLC spectrum signal and converts it into an electrical signal. The device side receives data using visible light VLC, and feedback data using PLC, which is more secure.

The invention belongs to the technical field of heterogeneous communication network security, and discloses a heterogeneous communication network physical layer security resource joint allocation method, system, equipment and medium based on multi-hop attention hypergraph convolution, and the method comprises the following steps: updating a node feature matrix to define a propagation operator of hypergraph convolution, and then according to the hyperedge type and the propagation operator, determining the hyperedge type according to the hyperedge type and the propagation operator; updating the multi-hop node feature matrix to carry out attention aggregation to obtain final node embedding, embedding the final node of any legal user node into an input multi-head task, distributing a base station access decision by multiple heads, and calculating the transmitting power and beam forming vector of a base station selected by the base station access decision to any legal user, and finally, based on a secrecy rate optimization problem, taking a negative value of the total secrecy rate as a loss function to guide physical layer security resource joint allocation. The system, the equipment and the medium are used for implementing the method. According to the invention, the physical layer security performance of the secret communication system is effectively improved.

The invention relates to communication security, in particular to a security communication system and method based on a quantum SIM (Subscriber Identity Module) card, and a terminal layer, which are used for generating a quantum random number as a key entropy source, performing identity authentication, encrypting and decrypting data and monitoring eavesdropping behaviors; the network layer is used for realizing key relaying, carrying out protocol conversion and achieving cross-network interconnection; the platform layer is used for performing identity authentication, generating a secret key and implementing security monitoring; according to the technical scheme provided by the invention, the defects that the user identity information is easy to leak, the secret key is easy to crack and an active eavesdropping detection mechanism is lacked in the prior art can be effectively overcome.

The invention relates to a secure communication system and method, which realizes data secure transmission through a direct and / or indirect communication mode between an intelligent device and a background server, and can realize device activation by utilizing the data secure transmission so as to realize background management and monitoring of the device and effectively prevent the device from being counterfeited, stolen and the like. And meanwhile, statistics of the number of customers is facilitated, the state of the intelligent equipment is determined, the user is reminded to carry out maintenance / abnormity reminding on the equipment, and the use experience of the user is improved.

A secure communication system enabling secure transport of information is disclosed. The system comprises a secure network with one or more packet processing units connected by links through an internal communication system. The secure network transports packets of information between credentialed and authenticated agents. Each packet is associated with a visa issued by a visa service. The visa specifies the procedures governing the processing of the packet by the packet processing units as it is transported along a compliant flow, between agents thorough the network, according to a set of policies specified in a network configuration. Packet processing units include docks and forwarders. Adaptors serving the agents communicate with the network through tie-ins to docks. The system also includes and admin service, accessible to one more admins, that facilitates configuration and management of the network.

[Problem] To provide an optical secure communication system with higher safety by carrying a QNSC signal using a coherent Hermite-Gaussian pulse, multiplexing the QNSC signal using coherent Hermite-Gaussian pulses of different orders, and adding a masking effect in a time domain. [Solution] An optical secure communication system for a quantum noise stream cipher (QNSC) signal for masking the phase and / or the amplitude level of an optical signal using quantum noise, wherein carrier light in a transmission unit and locally oscillated light in a reception unit of the QNSC signal comprise a coherent Hermite-Gaussian pulse with an amplitude given by an Hermite-Gaussian function.

The invention relates to a laser chaotic secret communication system based on coherent pumping phase conjugation, which belongs to the technical field of laser communication and comprises a signal transmitting module, an optical fiber link module, a conjugate transpose module and a signal receiving module. The signal transmitting module generates and modulates a chaotic carrier optical signal, and data encryption is realized through phase modulation; the optical fiber link module is used for long-distance signal transmission; the conjugate transpose module adopts an optical comb to generate coherent pump light, and generates phase conjugate waves through four-wave mixing to realize compensation of dispersion and nonlinear distortion in an optical fiber link; and the signal receiving module recovers original data through chaotic synchronization, coherent detection and digital signal processing. The phase locking characteristic of coherent pumping is utilized, the phase noise influence in a traditional pumping system is reduced, the stability of the system is improved, the anti-interference performance of chaotic secret communication and the transmission quality of the system are improved, and a feasible scheme is provided for achieving high-fidelity and high-safety long-distance optical communication.

A secure communication system according to the present disclosure includes a digital license plate installed on a vehicle and a server wirelessly connected to the digital license plate. The server includes one or more server processors and a non-transitory computer-readable server storage medium storing with one or more programmed instructions which, when executed by one or more server processors, cause the server processors to perform: receiving an image and a request to display the image at the digital license plate, verifying whether the image is digitally signed by an authorized party, refusing the request if the image is not digitally signed by the authorized party, and requiring the digital license plate to be unable to display the image.

The invention relates to a secure communication system and method, computer equipment and a readable storage medium. The safety communication system is applied to the safety warehouse. The system comprises an electromagnetic field detection host, a door lock sensor and a master controller which are arranged in a wallboard of the safety bin, and a voice alarm which is arranged in the safety bin, wherein the electromagnetic field detection host is used for acquiring metal information and sending the metal information to the main controller; the door lock sensor is used for detecting the bin door state of the safety bin and sending the bin door state to the main controller; the main controller is used for acquiring metal information and a bin gate state; starting a conference system under the condition that the metal information and the bin gate state meet the safety communication condition; under the condition that the metal information and the bin gate state do not meet the safety communication condition, an alarm signal is generated and sent to a voice alarm; and the voice alarm is used for performing voice alarm when receiving the alarm signal. By adopting the system, the conference security can be improved.

The invention discloses a method for realizing joint covert communication and secret communication, which belongs to the technical field of wireless communication and comprises the following steps of: constructing a joint covert communication and secret communication system in a D2D (Device-to-Device) and cellular network scene; in the system, the detection performance of a base station (BS) and the secure transmission performance of confidential information of the base station in a cellular communication mode and a D2D communication mode are analyzed, and the secure transmission performance of the base station in the cellular communication mode and the D2D communication mode is optimized. The method comprises the following steps: firstly, in a D2D communication mode, maximizing the confidential transmission rate at a BS (Base Station) in each mode, and secondly, carrying out covert communication capability analysis on user equipment in a D2D communication mode and a forwarding party of the base station, namely obtaining the covert transmission rate of the user equipment and optimizing the transmission rate, and finally obtaining the optimal signal transmitting power of the user equipment of the forwarding party.

This invention provides a time-phase-based quantum lidar, which utilizes CMOS-compatible silicon-based optoelectronic integration technology to fabricate the transmitting and receiving chips. The advantages of chip-based integration include small size, light weight, and low power consumption, making it more practical for applications. The core chip for both quantum lidar and quantum secure communication systems, fabricated using integration technology, offers advantages such as small size, high precision, high speed, and low power consumption. This chip can be used for both quantum lidar and quantum secure communication.

A multi-station collaborative skywave massive MIMO secure communication system and method includes a description module, a setup module, a precoding module, a base station selection module, and a data acquisition module. The description module describes the roles and relationships of the various elements in the multi-station collaborative skywave secure communication method. The setup module establishes a mathematical model for user location-based precoding schemes, base station selection, and achievable rate distribution. The precoding module solves the precoding problem for each base station. The base station selection module selects the appropriate base station based on the user's location. This method effectively improves the poor security issues inherent in traditional shortwave communications, which suffer from low user rates and wide coverage.

The invention discloses an aluminum oxide zinc-based solar blind photoelectric detector and a preparation method and application thereof, and belongs to the technical field of photoelectric detectors. Comprising a substrate layer, an N-type semiconductor layer, a P-type semiconductor layer and a top electrode layer, the N-type semiconductor layer is arranged on the substrate layer, the P-type semiconductor layer is arranged on the N-type semiconductor layer, and the top electrode layer is arranged on the P-type semiconductor layer. The preparation method of the aluminum oxide zinc-based solar blind photoelectric detector comprises the following steps: cleaning indium tin oxide to obtain a bottom electrode; a metal aluminum target and a metal zinc target are co-sputtered on the bottom electrode through pulse magnetron in an argon oxygen environment to obtain an aluminum zinc oxide film; a metal copper target is sputtered on the aluminum zinc oxide film through pulse magnetron sputtering in an argon oxygen environment to obtain a copper oxide film; and the silver target is subjected to direct-current magnetron sputtering to obtain a silver top electrode. The preparation method is simple, the film stability is high, and later integration and application of the photoelectric detector are facilitated. The photoelectric detector is fast in response speed and high in responsivity, and shows huge potential as a secure communication system optical receiver using international Morse codes.

The invention provides a vehicle-mounted lightweight security communication system and method based on a cloud quantum key pool, and relates to the field of Internet of Vehicles information security. The method comprises the following steps: presetting the same root key in a hardware security module of a cloud terminal and a hardware security module of a vehicle-mounted terminal, obtaining a key application request of a quantum session of the vehicle-mounted terminal, and distributing a quantum session key of the communication from a cloud quantum key pool; based on the root key, encrypting a quantum session key of the communication to obtain a quantum key data packet and transmitting the quantum key data packet to the vehicle-mounted terminal; and analyzing a session key based on the quantum key data packet in the hardware security module, and encrypting the sensitive data by using the session key through a hardware accelerated symmetric encryption algorithm to obtain encrypted vehicle-mounted sensitive data, and decrypting and storing the encrypted vehicle-mounted sensitive data. The method is used in the communication process of the vehicle-mounted terminal and the cloud terminal, and solves the technical problem that the QKD is limited by a special optical fiber or precise sight distance free space optical communication in the mobile vehicle scene application.