1209 results about "Key distribution" patented technology

The invention discloses a heterogeneous encrypted multi-mode multimedia message real-time fragmentation transmission method for a 5G network, and relates to the technical field of multimedia transmission optimization. According to the heterogeneous encryption multi-mode multimedia message real-time fragmentation transmission method for the 5G network, the fragmentation granularity and priority are optimized through a reinforcement learning algorithm by obtaining the sensitive label and the value density of multimedia data and combining the 5G slice resource state. And dynamically selecting an encryption algorithm cluster according to a fragmentation rule, and realizing cross-slice key distribution and updating by using an alliance chain. On the basis of space-time relevance of multi-modal data, a fountain code driven redundant coding strategy is constructed, and a fragment transmission path is optimized in combination with a game theory model. And finally, analyzing a transmission flow characteristic and a key distribution log, and dynamically adjusting an encryption strength threshold value and a fragment retransmission strategy. According to the method, the security, the reliability and the transmission efficiency of the multimedia data in the 5G network are improved, and the method is suitable for a multimedia communication scene with low time delay and high reliability.

The invention discloses a key generation and distribution system based on quantum random numbers, and relates to the technical field of quantum key distribution. The system comprises a quantum random number generation module, a light source control module, a quantum key distribution module, a detector module, a data processing module, a communication control module, a network anomaly monitoring module and an identity authentication module. According to the secret key generation and distribution system based on the quantum random number, the quantum random number generator generates a real unpredictable random number sequence by using the randomness principle in quantum mechanics, and the random number sequence is taken as the basis of the secret key, so that the unpredictability and the safety of the secret key are fundamentally improved; compared with a traditional secret key generation method based on a pseudo-random number, the quantum random number has higher randomness and lower predictable risk, various cryptographic analysis attacks can be effectively resisted, the uncrackability of the secret key is ensured, and an unbreakable safety guarantee is provided for information communication.

The invention belongs to the technical field of digital information transmission, and relates to a vehicle-mounted ad hoc network security communication system and method based on an NTRU lattice cryptosystem, and the system comprises a message signature module, a message encryption module, a message decryption module, an identity authentication module, and a key exchange module. The message signature module carries out signature by utilizing a private key and a random polynomial dynamically generated by a pseudo-random number generator based on an NTRU lattice cryptosystem; the message encryption module encrypts a to-be-sent message by randomly selecting a temporary polynomial and combining a public key of a receiver; the message decryption module is used for decrypting the received ciphertext # imgabs1 # by using a private key and an inverse element # imgabs0 # of a module p of the private key; the identity authentication module is used for performing identity authentication; the key exchange module realizes secure key exchange between communication nodes in the vehicle-mounted ad hoc network through an improved Blom key distribution protocol. The system improves the security and communication efficiency of the vehicle-mounted network.

The embodiment of the invention provides a quantum key distribution relay path determination method, device and system and a medium, and the method comprises the steps: determining a source node and a destination node of quantum key distribution from a routing calculation request after the routing calculation request of key sending equipment of a quantum key distribution network is received; determining candidate paths for quantum key distribution and the number of relay links of the candidate paths according to the source node and the destination node, and obtaining state parameters of the relay links of the candidate paths; determining the priority of the candidate path according to the number of the relay links of the candidate path and the state parameters of the relay links; according to the method, the candidate path with the highest priority is used as the target path for quantum key distribution, so that the optimal path in the candidate paths can be selected for quantum key distribution according to the state of the relay link of the quantum key distribution network, and the quantum key distribution efficiency is improved.

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 industrial internet data security communication method based on hybrid anti-quantum cryptography, which relates to the technical field of data communication, and comprises the following steps: acquiring a key pair and an anti-quantum security certificate; sending a connection request to data receiver equipment to complete certificate credibility authentication, and sending an anti-quantum security certificate of the equipment; receiving a shared key seed sent by the data receiver equipment; decrypting the encapsulated ciphertext to obtain a shared key seed, and generating a corresponding shared key according to the same shared key generation algorithm as the data receiver equipment; the method comprises the following steps of: signing original data by using a signature private key, splicing a signature and the original data to obtain spliced data, encrypting the spliced data by using a shared key based on an AES-256-GCM algorithm to obtain an encrypted ciphertext and an ML-DSA signature, and sending the encrypted ciphertext to data receiver equipment. According to the method, the key distribution step is simplified, the signature verification calculation overhead is optimized, and the data communication efficiency is improved.

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 a data distributed storage and reading method and system based on multi-modal protection, and relates to the technical field of multi-modal data encryption storage, and the method comprises the steps: receiving input data, and preprocessing the input data into multi-modal segmentation data; executing multi-key cooperative encryption on the data; carrying out distributed storage on the encrypted data; signing and broadcasting the distributed stored node information based on the block chain; and receiving a data query request of a user, obtaining the corresponding encrypted segmented data through the permission vector of the user, and decrypting and recombining the encrypted segmented data to obtain query data. Through the multi-modal feature fusion technology, the security of data storage is improved, meanwhile, a multi-level encryption system is constructed through multi-key cooperation encryption, the security of key distribution is effectively guaranteed, a distributed storage strategy based on dynamic weight is adopted, intelligent selection and load balancing of storage nodes are achieved, and the security of data storage is improved. And the data storage reliability and the system expansibility are improved.

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 invention relates to the technical field of block chains, and discloses a data encryption system for evidence collection and storage based on a block chain technology. According to the data encryption system for evidence collection and storage based on the block chain technology, a hash value can be generated based on a timestamp of data chaining, so that integrity of storage data is regulated and controlled, data tampering detection is realized, a user permission access range can be regulated and controlled in combination with a key distribution mechanism, sensitive data leakage is effectively prevented, and user experience is improved. The consistency of the encryption step is verified according to the intelligent contract execution logic, the multi-node synchronization error is eliminated, the error of the encrypted data storage link is verified through the Hash verification algorithm, and the consistency of the block data is ensured.

Methods, systems, and devices for data processing are described. A server host may receive a login request that includes a clear text password for an account associated with a tenant of a multi-tenant cloud platform. The server host may retrieve an encrypted payload associated with the account. The encrypted payload may include a hash value of a user-configured password for the account and an indication of a hashing algorithm used to transform the user-configured password into the hash value. The server host may obtain a wrapped symmetric key provisioned by a symmetric key distribution service. The server host may transmit a request that includes the encrypted payload, the clear text password, and the wrapped symmetric key. The server host may receive a response that indicates whether a hash value of the clear text password from the login request corresponds to the hash value of the user-configured password.

The invention relates to the technical field of encryption communication, in particular to a distributed vehicle-mounted advertisement node encryption communication and tamper-proofing system. Comprising a vehicle-mounted advertisement node layer, an edge computing layer, a block chain layer and a cloud platform layer, the vehicle-mounted advertisement node layer is composed of a plurality of vehicle-mounted advertisement nodes and is responsible for collecting vehicle sensor data, playing advertisement content and performing local encryption. The edge computing layer is composed of edge computing nodes distributed in a regional base station or a road side unit and is responsible for dynamic key distribution, lightweight data verification and node state monitoring; the block chain layer comprises an advertisement evidence storage module and an identity management module, adopts an alliance chain, stores advertisement content hash, node identity certificates and operation logs, and ensures that data cannot be tampered; the cloud platform layer comprises an advertisement distribution module, a secret key life cycle module and an anomaly analysis module, and is responsible for global advertisement content distribution, secret key life cycle management and anomaly detection analysis.

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 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.

A method by an integrated access and backhaul, IAB, node and an IAB node for securely communicating with at least one second IAB node is provided. A connection is established a connection with a donor IAB node of a network. A first message including a symmetric key to use in securely communicating with the at least one second IAB node is received from the donor IAB node. A second message is transformed into a secure message using the symmetric key and a message protection algorithm. The secure message is transmitted to the at least one second IAB node.

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 discloses a self-adaptive quantum key distribution method and system in a power network, and relates to the technical field of power grid key distribution, and the method comprises the following steps: key distribution equipment prepares quantum bits, randomly selects the polarization state of the quantum bits, and adjusts the polarization state of the quantum bits according to negotiated de-coherence parameters; establishing a communication link, and sending the quantum state to a secret key receiving device through the communication link; the key distribution device and the key receiving device exchange preparation and measurement basic information through a classical channel, compare the same basic result and extract the key from the same result; and obtaining a final security key according to an evaluation result. According to the invention, de-coherence parameter negotiation is added on the basis of a classical BB84 protocol, and the negotiation allows a key distribution device and a key receiving device to jointly determine de-coherence parameters through a classical channel, so that the quantum key distribution process can be automatically adjusted to adapt to constantly changing environmental conditions; and the quantum bit error rate can be effectively minimized.

The invention provides a power distribution automation terminal security debugging method based on Bluetooth communication, and the method comprises the steps: extracting a historical operation record and a current task context from an operator identity identifier, calculating a real-time permission range of resource access, and adjusting an initial access boundary according to the real-time permission range; a security gateway module is embedded in a Bluetooth communication channel, a cross-domain data exchange request is intercepted and analyzed, whether the request exceeds the adjusted access boundary is judged, and if yes, transmission is refused; analyzing the cross-domain data exchange request, extracting a source domain identifier and a target domain identifier of a data packet from the cross-domain data exchange request, and encrypting the data packet to obtain encrypted cross-domain transmission data; and obtaining a decryption key distribution record of the encrypted cross-domain transmission data in the security domain of the receiving end, judging whether the key is matched or not, if so, decrypting the data and transmitting the data to the target domain, and otherwise, discarding the data.

Systems, apparatuses, methods, and computer program products are disclosed for facilitating extended range encrypted communication. An example method includes automatically navigating, via navigation circuitry of a first drone, to a first location of a first device. The example method also includes generating, by quantum random number generator circuitry of the first drone, a cryptographic key. The example method also includes establishing, by communications hardware of the first drone, a first connection between the first drone and the first device. The example method also includes causing transmission, by the communications hardware of the first drone, of the cryptographic key to the first device, such that the cryptographic key facilitates secure communication between the first drone and the first device.

The invention provides a key charging method and device based on quantum key protection. The method comprises the following steps: a charging client sends a key negotiation request to a local key server; the local key server obtains a first quantum key through the quantum key distribution network as a shared key and sends the shared key to the charging client and the target key server; the charging client sends a charging key acquisition request to the target key server; the target key server obtains the charging key and encrypts the charging key by using the shared key to generate a charging key ciphertext; the target key server sends the charging key ciphertext to the charging client; and the charging client writes the charging key ciphertext and the shared key into the key charging security medium to complete key charging, so that secure transmission and storage of the key among different security environments are ensured through the quantum key distribution network, and the charging key is encrypted by using the quantum key in the transmission process, so that the security of the key is ensured. And the security and reliability of key management are 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.

The invention discloses a 5.5 G network encryption communication method based on quantum key distribution, and relates to the technical field of quantum encryption communication, a channel characteristic data set, an equipment parameter data set and an environment parameter data set are collected in advance, a channel prediction model is constructed based on the channel characteristic data set and the environment parameter data set, and the channel prediction model is constructed based on the equipment parameter data set and the environment parameter data set. And constructing an equipment optimization model based on the equipment parameter data set and the prediction result of the channel prediction model, constructing an error rate optimization model for outputting a key management strategy based on the prediction result of the channel prediction model and the optimization result of the equipment optimization model, and sending the optimized key management strategy. According to the method, a key management strategy is established, quantum key distribution is executed according to the key management strategy, changes of channel parameters and equipment parameters are monitored in real time through a 5.5 G network, quantum signal generation and transmission strategies are adjusted by using a genetic algorithm based on the changes of the channel parameters and the equipment parameters monitored in real time, and the robustness and flexibility of 5.5 G network communication are enhanced.

The invention discloses a chat secure communication method and system based on a dynamic key, and particularly relates to the technical field of communication, and the method comprises the steps: judging whether the dynamic key needs to be updated or not according to an interaction mode between nodes and an abnormal behavior between the nodes; determining a dynamic key updating time window by establishing a dynamic key updating evaluation model; analyzing the stability of node connection and the historical data transmission quality, and adjusting the weight of the node in the dynamic key distribution process so as to confirm the priority of the node; according to the node priority and the updated dynamic key, the system of the distributed chat tool encrypts the original information sent by the information sender and decrypts the encrypted information received by the information receiver to realize information transmission; and the encrypted message cannot be decrypted by verifying the dynamic key before updating, so that the security of chat communication is ensured.

The invention relates to the technical field of computer security, in particular to an embedded software reinforcement method based on a national cryptographic algorithm. The method comprises the following steps: generating a key pair by using SM2, constructing a code dependency graph in combination with spectral clustering, and optimizing key distribution; carrying out segmented encryption by adopting SM4 symmetric encryption, and identifying sensitive code snippets; the integrity of the embedded software is monitored and responded in real time through SM3 hash check and anomaly detection; analyzing vulnerability distribution based on random forest regression by using an SM4 encryption update package and dynamically adjusting an update frequency; and encrypting an operation log through SM3, and identifying a risk trend and generating an operation report by using a variational auto-encoder. According to the invention, through a plurality of technical means such as hierarchical encryption, real-time monitoring, dynamic key management and risk prediction, an efficient, dynamic and intelligent security reinforcement scheme is provided for embedded software, and the overall security and stability of the system are improved.

Systems, apparatuses, methods, and computer program products are disclosed for mobile quantum key distribution (MQKD). An example method includes establishing a first connection between a MQKD device and a first device. The example method further includes generating a pair of entangled particles and injecting quantum data that is based on a first particle of the pair of entangled particles into the first device. The example method further includes establishing a second connection between the MQKD device and a host device and injecting quantum data that is based on a second particle of the pair of entangled particles into the host device to facilitate secure communication between the host device and the first device based at least on the pair of entangled particles.

The invention relates to the technical field of information encryption, in particular to a customer information encryption protection method in a pork transaction process, which comprises the following steps of: based on pork transaction data, sequentially finishing key distribution path sorting and serial number verification, screening deviation in combination with customer operation behaviors, adjusting a sensitive field encryption strategy and replacing a key; and performing consistency verification on the identity data abstract combination, generating a signature according to the transaction content, and verifying a signature consistency result. In the invention, through a dynamic key path and inter-node sorting coding, real-time adjustment of a flow link is realized, transaction behavior data drives an encryption strategy to be switched in time, a sensitive field key can be dynamically updated along with the change of an operation characteristic, and segmentation consistency confirmation of a client identity is realized through multi-abstract combination cross verification; digital signatures are synchronously incorporated into double check of multi-source abstracts and transaction contents, and when behavior abnormity and node abnormity are found, related processes are actively interrupted, and risk marking is automatically completed.

Embodiments of a present disclosure relate to communication systems and more particularly to a system and a method for a point-to-point decoy differential phase shift (DPS) Quantum Key Distribution (QKD). The system includes a source QKD device and a destination QKD device. The source QKD device generates and transmits one or more quantum states comprising a series of N coherent pulses with one or more phases to the destination QKD device. The destination QKD device receives, and records time information and corresponding detector units associated with each photon detection event in the received quantum states. The source and destination QKD devices use decoy states to detect and prevent attacks, such as Photon-Number-Splitting (PNS) attacks. The system allows for the secure generation of a secret key between the source and destination QKD devices.

The invention provides a power marketing archive intelligent management method, which comprises the steps of receiving archive data through a power data acquisition interface, matching an electricity price feature code in an archive based on a real-time electricity price policy identifier, and injecting a version calibration mark into unmatched data; constructing an electricity consumption abnormity prediction model based on the user historical load mode and the environmental factors; when a query request is responded, dynamic penalty parameters are generated based on the user behavior portrait and the rule base; a quantum key distribution path is generated based on a power grid topological structure, and cascade encryption is implemented along physical connection nodes; dynamically associating user operation authority with a power grid operation risk signal, and automatically disabling core operation in a high-risk state; and analyzing archive data in a security isolation environment to drive line loss optimization, electric charge tracing and fault pre-judgment service flow in real time, and outputting feedback archive update based on the service. According to the invention, the safety, reliability and operation efficiency of power marketing archive management are improved.

Techniques for encrypting data within a 5G Open Radio Access Network (O-RAN) includes receiving, at a first module of the 5G O-RAN, a first set of one or more data packets encrypted using mathematical encryption. The method also includes determining, using a machine-learning model trained to detect cybersecurity threats, the existence of a cybersecurity threat associated with the voice or data transaction, and in response, determining to switch encryption from the mathematical encryption to quantum encryption. The method further includes encrypting the one or more data packets using a quantum encryption key to generate quantum-encrypted data packets, transmitting the quantum encryption key from the first module of the 5G O-RAN core to a second module of the 5G O-RAN over a quantum key distribution (QKD) channel, and transmitting the quantum-encrypted data packets from the first module of the 5G O-RAN to the second module of the 5G O-RAN.

A quantum-resistant encryption system for securing cloud data storage, consisting of: a quantum-resistant encryption unit consisting of a high-performance processor configured to encrypt data and a storage unit for storing encryption keys; a data processing unit operationally connected to the quantum-resistant encryption unit, wherein the data processing unit is configured to encode, format and structure data prior to encryption and uses a data processing circuit designed to optimize data for quantum-resistant encryption methods; a key management unit configured to generate, store and distribute quantum-safe encryption keys, wherein the key management unit includes a dedicated hardware-based key generation module that uses lattice-based cryptographic principles to ensure the quantum resilience of the keys, a secure key storage module for storing encryption keys and a key distribution module for securely transferring the keys to authorized users; a secure transmission unit operationally connected to the quantum-resistant encryption unit and the key management unit, wherein the secure transmission unit includes a quantum-safe transmission processor configured to ensure that encrypted data is securely transferred from the user's device to the cloud storage, using secure communication protocols that are resistant to quantum-based attacks; and a cloud storage unit configured to store the encrypted data, wherein the cloud storage unit comprises multiple hardware storage partitions, each partition encrypted with different quantum-resistant keys to ensure that the data remains secure even if one partition is compromised, and includes hardware-level security mechanisms that monitor and restrict access to the encrypted data.