1337 results about "Quantum key distribution" patented technology

The invention provides an encryption transmission method and system of a wireless information transmission communication base station, relates to the technical field, discloses the encryption transmission method of the wireless information transmission communication base station, and belongs to the technical field of wireless communication. The method comprises the following steps: receiving a communication signal and extracting identity authentication information and a signal characteristic parameter; performing identity authentication scoring based on a deep neural network, performing signal feature scoring through spectral analysis, and constructing a communication security assessment model; a key pair is generated by adopting an elliptic curve cryptographic algorithm, and data is encrypted after being subjected to confusion transformation and diffusion transformation; transmitting a key by using a quantum key distribution technology; and selecting an optimal transmission channel based on the operation state data of the communication base station, and performing data transmission by adopting interleaving coding and adaptive power control technologies. According to the invention, the security and transmission reliability of wireless communication are improved, and the anti-interference capability is enhanced.

The invention provides a VDSL ultra-low time delay communication method and system, and relates to the technical field of communication, and the method comprises the steps: encrypting a clock synchronization channel through a quantum key distribution protocol, dynamically dividing micro time slot resources in an orthogonal frequency division multiplexing symbol period, and generating a dynamically adjusted micro time slot resource distribution result; calculating an optimal phase offset matrix of the metasurface intelligent reflecting surface through a depth deterministic strategy gradient algorithm to obtain an optimized electromagnetic wave propagation path; generating a global optimization check matrix by aggregating the locally trained lightweight error correction model gradient of each node to obtain a compensated data stream; and constructing a causal graph model dynamic pruning high-entropy path to minimize causal entropy, through multi-agent reinforcement learning, taking time delay-energy efficiency as a game target to decide an optimal modulation order and a subcarrier switching strategy, and obtaining an optimized stable communication link. According to the invention, high-reliability and low-delay communication basic support is provided for high-precision intelligent manufacturing.

The invention relates to the technical field of information security, and discloses an authentication method and system based on a Ksession shared session key MAC, and the method comprises the steps: obtaining to-be-encrypted data in a power monitoring system, dividing the to-be-encrypted data into key data and real-time data, and encrypting the key data and the real-time data; the method comprises the following steps: dynamically generating a Ksession key by using an ECDH protocol and an identity-based IBC technology, generating a message authentication code by using the Ksession key, carrying out integrity and authenticity verification on data in transmission through the message authentication code, transmitting encrypted data through a TLS / SSL protocol, and destroying the Ksession key at the end of a session; a quantum security digital certificate is generated by fusing quantum key distribution and a quantum security signature algorithm, and verification of the digital certificate is realized through a multi-party verification mechanism. The quantum security technology and the advanced encryption theory are integrated, and qualitative leap is achieved in the aspects of identity authentication, data encryption, integrity verification and access control.

The invention relates to the technical field of information security, and discloses a data security management system and method in an intelligent power grid, and the system comprises a dynamic encryption and key management module which is used for carrying out the encryption and key management of the data of the intelligent power grid, determining an encryption algorithm according to the sensitivity of the data, and generating a corresponding key, the dynamic encryption and key management module transmits encrypted data and key information to the adaptive access control module so as to ensure the security of data access; and the self-adaptive access control module is used for managing access permissions of the user and the equipment and performing dynamic authorization according to the attribute label and the context information. Through dynamic encryption and adaptive key management, an encryption algorithm and a key length are adjusted in real time according to data sensitivity and a network environment, a quantum key distribution technology is combined, high security and quantum attack resistance of a key are ensured, and then security and real-time performance of data transmission are ensured.

The invention discloses a computer network security monitoring system and method. The system comprises a quantum encryption traffic acquisition module, a biological recognition feature extraction module, a block chain detection traceability analysis module and a visual management module. The quantum encryption flow collection module generates and distributes a secure quantum key through a quantum key distribution unit, encrypts a collected data packet through an encryption transmission unit, and generates a flow data segment through a flow collection subunit and a data cache statistical analysis subunit. The biological recognition feature extraction module verifies the identity of a user through a biological recognition unit, and extracts a multi-dimensional feature vector by using a feature extraction subunit. And the block chain detection traceability analysis module performs detection and traceability analysis on the abnormal traffic through the anomaly detection subunit and the traceability analysis subunit, and stores a result in the block chain storage unit. The visual management module provides visual network state display and user identity verification functions through a visual display subunit and an identity verification and access control subunit. According to the invention, quantum encryption, biological recognition and block chain technologies are combined, so that the accuracy, security and traceability of network security monitoring are improved.

The invention discloses an electronic seal management and control method and system, and belongs to the technical field of electronic seal management, and the method comprises the steps: carrying out the identity verification of a seal use request; dividing a private key of the electronic seal into a plurality of key shares; a digital signature of the electronic seal is generated through cooperative calculation of a threshold signature mechanism; managing electronic seal key access in a trusted execution environment, and executing global signature calculation in a hardware encryption module; adopting a zero-knowledge proof algorithm to generate verifiable calculation proof data in the digital signature calculation process; and establishing a quantum communication link and generating a transmission key, and managing key transmission. According to the invention, the distributed storage private key is calculated through multi-party security, so that the risk of single-point leakage is eliminated; zero-knowledge proof is adopted to ensure that signature calculation is verifiable, and signature credibility is improved; secret key access is dynamically managed and controlled based on the trusted execution environment, and safety and flexibility are enhanced; quantum key distribution is utilized to ensure key transmission safety, and quantum attacks are resisted.

The invention discloses an information encryption method for wireless electronic countermeasure, and relates to the technical field of wireless transmission. According to the method, the wireless channel state is monitored in real time, the channel quality evaluation model is established, and the adaptive frequency adjustment algorithm and the cognitive radio technology are combined, so that whether the channel meets the communication quality requirement or not can be accurately judged, the influence of interference and attack on communication is effectively avoided, the continuity and stability of the communication process are ensured, and the communication quality is improved. The adaptability and the reliability of a communication system in a complex electromagnetic environment are remarkably improved, the quantum key is generated based on an encryption communication protocol of quantum key distribution, extremely high security of the key is ensured, communication data are difficult to crack in the encryption transmission process, security threats such as eavesdropping and tampering are effectively resisted, and the security of the communication system is improved. And through a secret key pre-distribution mechanism and a secret key updating process, the insufficient secret key distribution rate and the potential security risk are dealt with, the security of communication is further enhanced, and the confidentiality and integrity of information transmission are ensured.

The invention discloses an information security management method and system based on sensitive data, relates to the technical field of data management, and comprises the following steps: realizing quantum encryption transmission of remote high-sensitive data by combining a quantum key distribution link and a dynamic chaotic key stream; the partitioning and synchronization priority is dynamically adjusted according to the node load, the data integrity is verified through CRC, the distributed storage disaster recovery system with extremely high safety and usability is achieved, it is ensured that data can still be recovered even under extreme disasters, a zero-trust data channel based on an IPSec tunnel is constructed in the data transmission process, and the reliability of data transmission is improved. The tamper-proof, anti-counterfeiting and anti-leakage capabilities of a data access link are greatly improved, the access frequency abnormity is detected through the isolated forest model, the behavior trend is detected through the LSTM time sequence prediction model, the baseline deviation analysis is performed through user behavior portrait comparison, and the real-time, multi-modal and chained security monitoring of the user data operation behavior is realized.

Various embodiments described herein generally relate to a method and system for secure distribution of symmetric encryption keys using quantum key distribution (QKD). In at least one embodiment, there is provided a method for secure communication, comprising: establishing one or more secure keys at a first and second ground station using a quantum key distribution (QKD) protocol; transmitting from the first station to the second station a plurality of encryption keys, wherein the transmitting comprises: encrypting, at the first station, the plurality of encryption keys using at least one of the one or more of secure keys to generate an encrypted batch of keys; transmitting the encrypted batch of keys to the second station; and decrypting, at the second station, the encrypted batch of keys using the at least one secure key to access the plurality of encryption keys.

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.

The embodiment of the invention provides a quantum key distribution method based on a cryptographic infrastructure system, relates to the technical field of quantum secret communication, and provides a quantum key distribution method based on fusion of quantum key distribution and post quantum cryptography, which integrates a classical commercial cryptographic algorithm, a PQC post quantum cryptographic algorithm and quantum key distribution. A QKD-based quantum key secure distribution process combining SM2 and PQC mixed signature, SM2 and PQC mixed key packaging, PQC collaborative signature, PQC collaborative decryption, token access and other cryptographic technologies is designed, and anti-quantum cryptographic capability support is provided for voice applications through collaborative signature and collaborative decryption, so that the security of software for realizing a PQC cryptographic algorithm is improved, and the security of the PQC cryptographic algorithm is improved. Moreover, the software implementation mode does not have the inherent security problem of the IP, the dependency on the server is low, and the standardization program is high.

The invention discloses a computer network security situation awareness system and method, and relates to the technical field of computer network security, and the method comprises the steps: generating a dynamic gene pool through an antigen-antibody matching algorithm based on an initial quantum trust vector, and building a mapping relation table of an antigen feature vector and an antibody defense strategy; triggering a quantum alarm according to an entanglement entropy mutation event in the real-time quantum state flow data, matching a biological antibody strategy corresponding to a current network attack feature based on a mapping relation table, and fusing the quantum alarm and the biological alarm to generate an attack path topological graph; the network security situation is perceived by analyzing the quantum state change of the abnormal node ID and combining an attack path topological graph and a dynamic gene pool. Quantum entanglement pairs are distributed to network nodes through the quantum key distribution center, and initial quantum trust vectors are generated, so that the unknown attack resisting capability of the network is remarkably improved, and efficient and accurate network security situation awareness is realized.

The invention belongs to the technical field of communication, and discloses a network transmission management method and system, and the method comprises the steps that a data collection module collects multi-dimensional data in real time; the decision planning module optimizes a network route; the decision planning module performs protocol and encryption switching; the execution module dynamically adjusts the transmission strategy; the safety protection module performs four-dimensional dynamic protection on the data; the hybrid cloud deployment module guarantees the confidentiality of core data; the multi-active data center module realizes data synchronization among a plurality of data centers; the cross-domain collaborative module realizes privacy protection collaborative training between edge nodes through federated learning; and the block chain auditing traceability module records the key operation log. According to the method, routing and flow prediction are optimized through a mixed quantum classical calculation engine, multi-protocol heterogeneous scheduling and neural mimicry congestion control are combined, the network transmission efficiency is greatly improved, the data transmission speed is improved, and the data leakage risk is reduced through application of a zero-trust security matrix and a quantum key distribution technology.

The invention relates to the technical field of quantum key distribution, and discloses a communication protocol security verification method based on quantum key distribution, which comprises the following steps of: establishing a quantum communication channel framework, loading protocol parameters to generate an initial security verification model, configuring a security state transition rule, and performing cross-layer data fusion in combination with quantum entity parameters; and obtaining a whole-process safety tracking model. And executing security path deduction through the model, generating a key exchange trajectory chain, constructing security trajectory simulation data, establishing a quantum conflict resolution mechanism, training and generating a security policy optimization model, and outputting security governance parameters. Security increment simulation information is generated based on security governance parameters and the like, a multi-target decision model is constructed in combination with protocol evolution constraint conditions, optimal security path parameters are adjusted and generated, a security verification strategy is verified and updated through a real-time quantum mapping network, and a whole-process security matching target is achieved. According to the method, the comprehensiveness, the accuracy and the dynamic adaptability of quantum communication protocol security verification are effectively improved.

The invention belongs to the technical field of intelligent information, and particularly discloses a government affair security management intelligent system which comprises a data acquisition and integration module, a security situation awareness module and a core security management engine. Multiple innovative algorithms such as multi-source data fusion and deep transfer learning are adopted, and the functions of security threat prediction, personnel behavior supervision, emergency response decision optimization and the like are achieved. The invention also covers embodiments such as threat tracing based on the knowledge graph and the graph neural network, quantum key distribution, data transmission security of chaotic encryption and the like. All the modules cooperate with algorithms, safety of government affair system information, personnel, networks and the like is guaranteed in an all-around mode, safety management efficiency and emergency handling capacity are effectively improved, and safety risks are reduced.

The invention discloses a power monitoring system host security micro-isolation method and system, particularly relates to the technical field of power terminal security isolation, and aims to monitor electromagnetic interference and quantum state changes in real time and improve the stability and security of a quantum key distribution process in combination with quantum error correction and dynamic prediction technologies. A high-confidentiality encryption key is generated through the randomness of a quantum key generator, the interference level is monitored in real time in a high electromagnetic interference environment, a security protocol is automatically triggered, and parameters of a quantum system are adjusted through an active feedback mechanism; a dynamic Bayesian network is utilized to predict entanglement attenuation of a quantum state, an information exchange behavior of a quantum system is analyzed through quantum entanglement entropy, the attenuation degree and interaction intensity of the quantum state are comprehensively analyzed, and a dynamic micro-isolation strategy is implemented according to an analysis result; the reliability of quantum key distribution is improved, and the anti-interference capability of a power monitoring system in a complex electromagnetic environment is enhanced.

The invention discloses a quantum secret communication application security test method, system and device and a medium, and belongs to the technical field of communication security. According to the quantum secret communication application security test method, an attack detection model, a receiving and transmitting end detection model, a security performance index test model and a security result analysis model are constructed, and a security test process and a test process index are provided for the security problem of a classical communication process in quantum secret key distribution practical application; according to the method, the anti-attack capability and the security performance of a tested system are evaluated, so that the security of the quantum key distribution network is evaluated, and a corresponding test result is generated, so that the integrity and the confidentiality of a key in a transmission process are ensured, and a security evaluation reference can be provided for a power wireless public network; a communication security test verification scheme is provided for the quantum key distribution network, and the security operation of the key infrastructure is ensured.

The invention discloses an intelligent system and method for fusing mental health evaluation in an interest scene based on an education robot. The system realizes non-intrusive mental health assessment by constructing a technical architecture of'multi-modal biological feature anonymization-quantum hybrid encryption-federated learning privacy protection-dynamic risk assessment '. The method is characterized by comprising the following steps of: (1) generating irreversible biological characteristic codes by adopting a chaos random number generator, and realizing anonymized association by combining a double hash chain technology; (2) designing a quantum enhanced hybrid encryption system, fusing an SM4 algorithm, NTRU post quantum cryptography and quantum key distribution; (3) developing a dynamic scene generator, and naturally fusing psychological test questions into interest topics by using a generative adversarial network (GAN) and a curiosity engine; (4) constructing a multi-modal emotion analysis system, and combining an LSTM + CNN hybrid model to realize physiology-behavior-voice data fusion analysis; and (5) deploying a federated learning framework, and protecting model training data through differential privacy noise injection (epsilon = 0.5).

A key management device according to an embodiment includes one or more hardware processors configured to function as a determination unit, a generation unit, and a supply unit. The determination unit determines a type of request data requested by a request message transmitted from an application that performs encrypted data communication. The generation unit generates a response message including at least one of a random number and an encryption key shared by quantum key distribution (QKD) via a communication network according to a type of the request data. The supply unit supplies the response message to the application.

The invention discloses a multi-node secure communication method and system based on quantum key distribution, and the method comprises the steps: evaluating multi-dimensional parameters of a quantum channel, dynamically updating a node reputation value, constructing a four-dimensional topological graph database, and generating candidate routing paths based on a Monte Carlo tree search algorithm; a state-action space is constructed by further combining reinforcement learning, and path selection is optimized by using a dual Q network and a priority experience playback mechanism; through multi-dimensional channel assessment and node reputation value dynamic updating, the defects of a traditional quantum network static routing strategy are overcome, the communication safety and efficiency are improved, and low-delay and high-reliability key distribution of a complex quantum network is supported.

The invention discloses a commodity transaction method and system for a block chain smart contract, and relates to the technical field of smart contracts, and the method comprises the steps: generating an entanglement particle pair through a quantum key distribution protocol, and generating an initial contract parameter package; when the commodity arrives at the logistics key node, generating a space-time stamp hash value, and writing the space-time stamp hash value into the block chain to generate a logistics event voucher; the intelligent contract monitors the logistics event voucher and outputs a verification signal to trigger payment; when the buyer and the seller are objection to the verification result, the smart contract randomly selects an arbitration node through a dark matter detector network; after zero-knowledge proof verification, weighted voting is carried out according to rules, funds are released through a cross-chain protocol, and the commodity ownership is unlocked; after arbitration and verification are completed, the smart contract calls a cross-chain protocol to release funds to the seller, and a closed-loop transaction voucher is formed; through the quantum entanglement particle pair and the gravitational wave sensor, high-precision time-space stamp verification is realized, and authenticity and non-tampering of logistics events are ensured.

The invention provides an energy optimization scheduling method and device, a storage medium and computer equipment, and relates to the technical field of energy scheduling, during energy scheduling, original data of each edge node is collected, and after a data hash value and key metadata of the original data are determined, blockchain fragmentation storage is performed, so that the energy scheduling efficiency is improved. Meanwhile, original data are encrypted into edge data by adopting a quantum key distribution method, so that the data cannot be tampered; next, edge data training is adopted to obtain a digital twin sub-model corresponding to each edge node, then federal aggregation is performed to form a global model, decentralized cooperation is realized, and carbon energy flow is simulated in real time; and then, dynamically optimizing the global model to generate a scheduling instruction, if the scheduling instruction is not in an expected range, performing incremental optimization correction on the global model until the scheduling instruction generated by the global model is in the expected range, and issuing the scheduling instruction to each edge node to perform energy scheduling. Therefore, millisecond-level real-time scheduling response can be realized while data privacy security is ensured.

The invention discloses a multi-mode optical signal transmission method and device, electronic equipment and a storage medium, and relates to the technical field of computers.The transmitted data stream is divided into a control signal and a data signal, the control signal is a visible light wave band, the data signal is an infrared wave band, and the control signal and the data signal are combined to a single multi-core optical fiber through a combiner; the optical network controller allocates subcarrier resources as required according to the change of network flow in a spectrum dynamic allocation mode to perform data transmission, so that the subcarrier resource allocation adapted to the change of network flow improves the dynamic adaptability, and the allocation of the subcarrier resources as required improves the equipment cooperation efficiency, and in the data transmission process, the data transmission efficiency is improved. Clock synchronization and signal encryption are realized through a quantum key distribution mode, and the security is improved.

The invention discloses a high-load data steganography method, system and device and a medium, and the method comprises the steps: obtaining secret data of a power system, and converting the secret data into a novenary sequence; a quantum key distribution system is utilized to generate a shared key, the novenary sequence is encrypted through an encryption key, encrypted information is obtained, and the shared key comprises the encryption key and a mapping key; determining a corresponding first unit matrix from a preset mapping library based on the mapping key, and performing non-overlapping tiling on the first unit matrix in a two-dimensional plane to obtain a second-order reference matrix; and scanning a preset carrier image into a non-overlapping first pixel pair sequence according to a Hilbert curve, and embedding the encrypted information into the first pixel pair sequence by using the second-order reference matrix to obtain a steganographic image, so that the data transmission security can be improved.

Disclosed in the present invention are a quantum key distribution-based OTN encryption communication method and a system. The method comprises: applying to a quantum key distribution network for a session key, and establishing the association between the session key and a corresponding encryption policy; dividing the frame structure of any layer in an optical channel layer into an overhead area and a payload area; when a current sender OTN device supports adding information in the overhead area, adding in the overhead area a session key sequence number used for encrypting the present frame of a current port, using the session key to encrypt the payload area of the current frame on the basis of the encryption policy, and then sending the entire frame to a peer end OTN device; and when the current sender OTN device does not support adding information in the overhead area, using the session key to encrypt the payload area of the current frame on the basis of the encryption policy, then sending the frame to the peer end OTN device, and periodically sending a session key synchronization packet to the peer end OTN device. The present invention improves the reliability by using two key synchronization modes, i.e., a mode of supporting adding information in a frame and a mode of notifying by means of a management channel.

The invention discloses a substation dispatching data network security communication method based on quantum tunnel encryption, relates to the technical field of large-scale power grid security assurance, and aims to solve the problems of endpoint security loss, boundary solidification, weak quantum threat resistance and inflexible deployment of a dispatching data network. According to the method, the establishment of a secure session and the encapsulation, encryption and restoration of data are realized by integrating quantum key distribution and a post quantum cryptographic operation module through quantum secure communication terminals deployed in a dispatching master station and a transformer substation. According to the method, application layer encryption and signature are carried out on telecontrol protocol data, a double-layer encryption tunnel is constructed, and transmission of various physical network media is supported. By means of the scheme, end-to-end protection is achieved, quantum attacks are effectively resisted, double encryption is provided, and networking flexibility and smooth evolution are improved.

The present technology pertains to systems and methods for one-way authentication of quantum channels. A transmitter generates an entangled quantum state comprising a first state and a second state, modulates the second state according to a clock-synchronized pattern, and transmits it through a quantum channel to a receiver. The first state is retained and measured at the transmitter to extract quantum-state information. Authentication is performed based on this information, without requiring feedback from the receiver. The quantum-state information may be derived using quadrature measurements, Gaussian tomography, or other statistical analyses to detect whether the second state underwent irreversible interactions such as eavesdropping or decoherence. The system enables secure unidirectional quantum authentication, reduces protocol complexity, and supports real-time anomaly detection. It is compatible with continuous-variable quantum states, quantum key distribution (QKD), and scalable communication architectures.

The invention relates to the technical field of quantum communication and network security, in particular to a dynamic encryption method based on quantum key distribution, which comprises the following steps of: generating a multi-layer quantum entanglement state and adaptively setting a measurement basis in combination with a chaos scheduler; if the identity verification is qualified, quantum bits are measured at different levels, results are combined, and a shared quantum key is formed after Hash processing; the system end fragments plaintext data and encrypts the plaintext data by using the subkey segments; when abnormity is detected, entanglement purification or key updating is carried out immediately, and when communication is finished, high-fidelity entanglement resources are recycled and chaotic scheduler parameters are deleted. Multiple times of actual measurement and comparison show that the method can still maintain excellent safety and throughput performance in noise and attack environments.

A method of encryption for quantum-secured communication includes structuring a pair of quantum-enabled hardware security modules to include an interface to a temporarily common quantum channel and an interface to a communication channel. A secret key is shared with the pair of quantum-enabled hardware security modules for a symmetrical encryption between the pair of quantum-enabled hardware security module. The secret key is obtained using quantum key distribution via the temporarily common quantum channel. The temporarily common quantum channel is disconnected from at least one of the pair of quantum-enabled hardware security modules and a communication network is structured to include at least two nodes configured to communicate using symmetrical encryption between the pair of quantum-enabled hardware security modules sharing a same secret key.

In some embodiments, a system for quantum key distribution, includes a plurality of n devices pairwise connected by an optical network, where n is an integer greater than or equal to 2. The optical network comprises a set of n(n−1) channels. The system employs wavelength-multiplexing, wavelength-demultiplexing, and time-multiplexing to provide a secure quantum key between two devices.