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200 results about "Quantum network" patented technology
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Quantum networks form an important element of quantum computing and quantum communication systems. Quantum networks facilitate the transmission of information in the form of quantum bits, also called qubits, between physically separated quantum processors. A quantum processor is a small quantum computer being able to perform quantum logic gates on a certain number of qubits. Quantum networks work in a similar way to classical networks. The main difference, as will be detailed more in later paragraphs, is that quantum networking like quantum computing is better at solving certain problems, such as modeling quantum systems.
User identity authentication system and method
The invention discloses a user identity authentication system and a user identity authentication method. The user identity authentication system comprises quantum network service stations disposed on a network side and user ends disposed on a user side, and further comprises a quantum key card, wherein the network side generates true random numbers which are respectively stored on the quantum key card and the network side so as to generate corresponding user side secret keys, and the user side secret keys on the quantum key card and the network side are respectively used for generating authentication commands so as to perform comparison authentication. The true random numbers are generated by a certain quantum network service station on the network side, and the quantum key card and the certain quantum network service station respectively store the true random numbers so as to generate the corresponding user side secret keys. The user identity authentication method is an identity authentication method of a symmetric cryptographic system, uses the safety random keys generated by a quantum true random number generator as secret key seeds based on a mobile secret key device, is repeatedly used in identity authentication, and considers both secret key quantity and safety problems.
Owner:ZHEJIANG SHENZHOU QUANTUM NETWORK TECH CO LTD
Digital signature method, digital signature system and quantum key card
ActiveCN106357396AFix security issuesReduce the risk of being crackedKey distribution for secure communicationUser identity/authority verificationSignature fileDigital signature
The invention discloses a digital signature method, a digital signature system and a quantum key card. The digital signature system comprises quantum network service stations, signature client sides, authentication client sides and quantum key cards, wherein the quantum network service stations are configured on the network side, and the signature client sides and the authentication client sides are configured on the user side. The digital signature method includes that a true random number is generated on the network side and then stored in the corresponding quantum key card and on the network side respectively to form a corresponding user-side key; the quantum key card matching with the signature client side uses the stored user-side key to generate a signature file, the signature file is sent to the authentication client side via the signature client side, and the authentication client side sends the received signature file to the current quantum network service station, acquires the corresponding user-side key from the network side to perform signature authentication on the signature file and sends signature authentication results to the corresponding authentication client side. The digital signature method, the digital signature system and the quantum key card have the advantage that key seeds are stored in the quantum key cards and the quantum network service stations, so that the problems of access use and safety of quantum network terminals are solved.
Owner:ZHEJIANG SHENZHOU QUANTUM NETWORK TECH CO LTD
Managed roaming for WLANS
The present invention allows any number of mobile units to roam between a large numbers of sub-networks, each with a large number of access points (tens of thousands or more total access points), with minimal direct administration effort. A hierarchy of management servers may be used across the multiple sub-networks, which can be under the control of multiple entities. The invention provides the capability for the mobile units to authenticate the access points associated with, to ensure they are both authorized and managed. Peer-to-peer and ad hoc associations between mobile units are managed as well. The invention may enforce a number of association policies such as, for example, forcing the mobile unit to only associate with access points or mobile units on a previously set mandatory association list, providing the mobile unit with a list of preferred access points to associate with, but allowing association with other access points, or providing the mobile unit with a excluded association list of access points or mobile units it is not to associate with.
Owner:IVANTI INC
Electric power security communication network based on quantum key distribution technology
ActiveCN103763099AImprove securityKey distribution for secure communicationPower distribution line transmissionQuantum channelQuantum network
An electric power security communication network based on quantum key distribution technology comprises a power longitudinal encryption authentication device, a key generation control server, a classic switch, and a QKD system. The key generation control server is connected to the QKD system through the classic switch. Each power longitudinal encryption authentication device is provided with a QKD system which is connected to the power longitudinal encryption authentication device. The quantum key distribution is achieved through quantum channels among QKD systems. Communication among power longitudinal encryption authentication devices is achieved through classical channels. The power longitudinal encryption authentication device includes a quantum key transmission unit, a quantum key processing unit and an electric power communication data encryption unit, which are connected in sequence. Under a multi-user application situation, the interconnection among all the QKD systems will be achieved through all-pass typed light quantum switches. The invention further discloses an embodiment of integration of the electric power communication network and the quantum network. The electric power security communication network based on quantum key distribution technology has the advantage that the security in electric power communication network data transmission can be greatly improved by applying quantum communication technology into the traditional electric power communication network.
Owner:STATE GRID CORP OF CHINA +3
Communication system for realizing information encryption/decryption transmission based on quantum network and communication method
ActiveCN106452741AImprove utilization efficiencyOptimize workflowKey distribution for secure communicationComputer hardwareCommunications system
The invention discloses a communication system for realizing information encryption / decryption transmission based on a quantum network and a communication method. The communication system comprises quantum network service stations configured at a network side and clients configured at a user side. The system is also equipped with a quantum key card. True random numbers are generated at the network side. The true random numbers are respectively stored in the quantum key cards and the network side to form corresponding user side keys. The user side keys of the quantum key card and the network side are respectively used for encrypting and decrypting information when the clients communicate with the corresponding quantum network service stations. According to the system and the method, a quantum key seed is operated through utilization of the quantum key card, a large number of keys are generated in a short time, and the keys directly participate in the encryption and decryption processes of the information. The utilization efficiency of the keys is improved, the working process of the communication system is optimized, and the system and the method are beneficial for establishment and production of the quantum communication system and the application promotion of the quantum communication system in life.
Owner:ZHEJIANG SHENZHOU QUANTUM NETWORK TECH CO LTD
Message authentication method and system
ActiveCN106411525AEnsure safetyGuaranteed correctnessKey distribution for secure communicationUser identity/authority verificationHash-based message authentication codeQuantum network
The invention discloses a message authentication method and a message authentication system, wherein the message authentication system comprises a quantum network service station and a client side; the quantum network service station is configured at a network side; the client side is configured at a user side; Interaction of message authentication information carrying message authentication codes is carried out between the client side and the network side; comparative authentication is carried out by comparison of the respectively generated message authentication codes; a quantum key card is also arranged; the network side generates true random numbers to respectively store in the quantum key card and the network side, so that corresponding user side keys are formed; and the user side keys of the quantum key card and the network side are respectively used for generating the message authentication codes to perform comparative authentication. According to the message authentication method and system disclosed by the invention, advantages of the existing classical communication network are utilized; in combination with keys generated by a true random number generator and quantum key distribution, information data can be transmitted to a receiver only after stage-by-stage mutual message authentication is carried out; therefore, the correctness of the information data is ensured better; and furthermore, the security also cannot be reduced.
Owner:ZHEJIANG SHENZHOU QUANTUM NETWORK TECH CO LTD
Speaker recognition method combining Gaussian mixture model and quantum neural network
InactiveCN102201236AOvercoming the need for longer trainingOvercoming identificationSpeech analysisModel parametersQuantum network
The invention provides a speaker recognition method combining a Gaussian mixture model and a quantum neural network. The method provided by the invention comprises the following steps: at the training stage, framing input training voice signals, extracting characteristic parameters and generating characteristic parameter vectors; then using a K mean value method and an EM (expectation-maximization) algorithm to obtain the Gaussian mixture model parameters of the characteristic parameter vectors, and finally utilizing the Gaussian mixture model parameters of all the training voice signals to train the quantum neural network; and at the recognition stage, obtaining the Gaussian mixture model parameters of a recognized speaker, then inputting the model parameters into the trained neural network, and obtaining a recognition result. The speaker recognition method is applicable to recognition of the speaker under the condition of less sample data and unbalanced sample data, and simultaneously the capability of the quantum neural network which can carries out effective judgment on voice data with cross data and fuzzy boundary of the speaker is utilized, so that the correct recognition rate of a system can be improved.
Owner:PLA UNIV OF SCI & TECH
Quantum key relay service method
ActiveCN109995510AAchieve sharingReduce the delay of the relayKey distribution for secure communicationRouting tableQuantum network
The invention discloses a quantum key relay service method which mainly solves the problems of safety and efficiency of a quantum key trusted relay process in a quantum communication network. The method provided by the invention comprises the following steps of: the quantum network management server selects a relay node according to the relay routing table and the current state index of the relaynode; the relay node sends an XOR value of the shared quantum key between the relay node and the two adjacent nodes to the quantum key relay server; the quantum key relay server performs XOR operationon the received corresponding XOR value to obtain the XOR value of the quantum key of the source node and the target node, and the source node and the target node can realize the sharing of the quantum key by disclosing the XOR value. According to the invention, the safety is higher, the efficiency is higher, and the relay delay is smaller; the method can be widely applied to quantum communication networks of various topological structures, and has very important practical application value.
Owner:CHENGDU LINGGUANG QUANTUM TECH
System and method for authenticating identity based on quantum key
ActiveCN105515780AEnsure safetyIncrease the lengthKey distribution for secure communicationUser identity/authority verificationPlaintextCiphertext
The invention discloses a system and a method for authenticating identity based on a quantum key. The system comprises a user side, an authentication server side, a quantum network and a classic network. The method comprises the steps of using a plain text for identity authentication and a quantum key K1 in a traditional technology as a plain text for each authentication after serially combining the plain text with the quantum key K1; firstly, carrying out abstract extraction on the plain text; secondly, encrypting an abstract of the plain text by using an encryption algorithm; finally, transmitting an encrypted ciphertext to the authentication server side. According to the method for authenticating the legal identity of a user by applying the quantum key, provided by the invention, the authentication of the system on the legal identity of the user is realized, and transmission of data needed for authentication in a network is absolutely safe.
Owner:ZHEJIANG SHENZHOU QUANTUM NETWORK TECH CO LTD
Component mounting and dispatching optimization method for chip mounter on basis of quantum neural network
InactiveCN102883548APlacement time minimizedSave placement timePrinted circuit assemblingBiological neural network modelsMathematical modelOptimal control
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Addressing method of quanta network and quanta network router
ActiveUS7596318B2Good optical performanceIncrease the number ofMultiplex system selection arrangementsQuantum computersComputer networkAddress bus
An addressing method of quantum network and a quantum network router are disclosed. There are at least three nodes in the network. The method comprises steps of: appointing an address serial number for every node; sending photon signals with different wavelength from one node to other nodes, wherein the signal source wavelength and node address are regarded as an addressing badge; determining, by every node, the source of signal according to the addressing badge of received photon signals. Quantum network router comprises a photon signal allocator including N sets of optical components, one end of every optical component is mix-wavelength interface, and the other end includes separate wavelength interfaces; an external interface comprising mix-wavelength interfaces of optical components, separate wavelength interfaces of different optical components, which transmit the same wavelength signals, connect one to one. Using this invention can realize quantum communication in deed, includes quantum cryptographic key distribution, quantum network transmission, namely generalized quantum communication, and compose quantum computer addressing bus or quantum computer network, etc.
Owner:ANHUI QASKY QUANTUM SCI & TECH CO LTD
Multi-user orbital angular momentum multiplexing network system and quantum key distribution method thereof
ActiveCN105162587AImprove transmission stabilityEasy to implementKey distribution for secure communicationElectromagnetic transmission optical aspectsGratingQuantum network
The invention discloses a multi-user orbital angular momentum multiplexing network system, comprising an Alice control terminal, an S-D type orbital angular momentum multiplexing unit and a Bob user terminal, wherein the Alice control terminal comprises a laser source, a polarization controller, an attenuator, a first non-equal arm M-Z interferometer and an orbital angular momentum multiplexing unit; the orbital angular momentum demultiplexing unit comprises a Dammam grating, a second collimator and a single-mode fiber; the Bob user terminal comprises N Bob users; the laser source generates a light signal, the light signal is transmitted to the first non-equal arm M-Z interferometer after entering the polarization controller and the attenuator and is sequentially transmitted to the orbital angular momentum multiplexing unit and the orbital angular momentum demultiplexing unit; and finally, the light signal enters the Bob users for detection. The multi-user orbital angular momentum multiplexing network system disclosed by the invention is used for achieving one-to-many communication of quantum network communication of a free space, individual users are relatively independent, and the user number can be expanded with the increase of the orbital angular momentum multiplexing, so that the expandability is good.
Owner:GUANGDONG INCUBATOR TECH DEV CO LTD
Identity authentication method during quantum secret key application process
ActiveCN105763563AEnsure safetySecurity updateKey distribution for secure communicationInformation transmissionVia device
The invention discloses an identity authentication method during a quantum secret key application process. The identity authentication method includes the steps: a quantum network deployment phase, a preparation initial phase, a secret key preparation phase, an identity authentication phase and a secret key application phase. During an abstract extraction process, as the identity authentication method uses a quantum secret key and the quantum secret key is provided with true randomness, the difficulty for performing reverse operation on the abstract can be further reduced and the safety for information transmission can be improved; and at the same time, after accomplishment of one time of session identity authentication, only a device for identity authentication is allowed to apply for a secret key, so that the safety is further improved through verification of the device information, and during the process, a session ID is in continuous changing state and depends on a plurality of factors, so that a large amount of impersonation attack can be timely eliminated through verification of the session ID. For the identity authentication method during a quantum secret key application process, the secret key is applied to the quantum secret key application process to verify the legal identity between two parties for communication, so that verification of the legal identity of the opposite side between the two parties for communication can be realized and the required data for verification has absolute safety during the transmission process in the network.
Owner:ZHEJIANG SHENZHOU QUANTUM NETWORK TECH CO LTD
Cloud storage method and system
ActiveCN106209739AGuarantee data securityQuantum computersComputer security arrangementsQuantum networkKey distribution
The invention discloses a cloud storage method and system. At least one quantum key is generated through a quantum network by a QKD system at a terminal side and at least one QKD system at a cloud server side; and a cloud storage client side processes the at least one quantum key through a pre-set encryption algorithm so as to generate a combined key. By means of the method, a quantum key distribution technology and a cloud storage technology are combined; because natural advantages that a lot of random keys can be easily generated through distributed characteristics of cloud storage and quantum key distribution and the keys are difficultly eavesdropped are utilized, a malicious attacker cannot obtain the quantum keys, and cannot crack the combined key; and thus, the data security of cloud storage is greatly ensured.
Owner:QUANTUMCTEK
Message authentication method and system based on quantum key card
ActiveCN108173649AEnsure safetyReduce consumptionKey distribution for secure communicationUser identity/authority verificationComputer hardwareHash-based message authentication code
The invention discloses a message authentication method based on a quantum key card, and a message authentication method. The message authentication system comprises a quantum network service stationconfigured at a network side and two clients configured at a user side to participate the message authentication, each client is configured with a quantum key card, two clients directly or indirectlyacquire a common key seed through the quantum network service station at the network side when performing the message authentication; two clients respectively generate message authentication codes byusing the owned common key seed in the corresponding quantum key card, and correspondingly implements message authentication at the user side. When two clients perform the message authentication, thecommon key seed is acquired through the quantum network service station at the network side, the generation and the comparison authentication of the message authentication code are performed at the user side, the security of the data transmission is guaranteed, and the consumption on the data processing resource at the network side is lowered.
Owner:RUBAN QUANTUM TECH CO LTD
Identity authentication system based on quantum key card
InactiveCN108768653APrevent replay attacksImprove securityKey distribution for secure communicationUser identity/authority verificationTimestampQuantum network
The invention discloses an identity authentication system based on a quantum key card, which comprises a client A, a client B and a quantum network service station, wherein the client A applies for TGT(A) to the quantum network service station and obtains TGT(B) via the client B; and the client A applies for a corresponding Ticket to the quantum network service station according to the TGT(A) andthe TGT(B), and accesses to the client B by using the obtained Ticket. Each client is respectively configured with a quantum key card, and a corresponding quantum key is stored between the quantum keycard and the quantum network service station; and identity authentication is performed by using the configured quantum key cards when communication is performed between the client A and the quantum network service station and between the two clients. The identity authentication system uses a quantum true random number to replace a timestamp in the prior art, and solves the possibility of replay attacks. The quantum key card is independent hardware equipment, and the possibility of key stealing is greatly reduced. In addition, the key can be frequently changed, so that the security is greatlyimproved.
Owner:RUBAN QUANTUM TECH CO LTD
Quantum key relay method
ActiveCN109995515AInnovativeSolving the Security Diffusion ProblemKey distribution for secure communicationRouting tableQuantum network
The invention discloses a quantum key relay method which mainly solves the safety and efficiency problems of a quantum key trusted relay process in a quantum communication network. The method comprises the steps that quantum keys are cached in advance or negotiated in real time between adjacent quantum nodes, and the quantum nodes respond to a relay service request of a quantum network managementserver in real time; the quantum network management server selects a one-way concurrency relay method or a two-way concurrency relay method according to the relay routing table and the current state index of the related quantum node, and safely relays a key from the source node to the target node. According to the invention, the credibility requirement on the relay node can be reduced, the key relay efficiency is improved through concurrent response and a preferable relay mode, and the relay delay is reduced; the method and the system can be widely applied to quantum communication networks ofvarious topological structures, and have a good application prospect.
Owner:CHENGDU LINGGUANG QUANTUM TECH
Networking method based on large scale monatomic cavity quantum network
ActiveCN102769527AImprove distribution efficiencyImprove efficiencyKey distribution for secure communicationData switching networksNODALComputer hardware
A networking method based on the large scale monatomic cavity quantum network. The flow includes: (1) building a quantum secret key distributing layer based on a monatomic cavity to form a quantum network; (2) building a model where a classical communication network and a quantum secret distributing layer are combined; (3) mapping quantum nodes and quantum link performance in the quantum secret key distributing layer on the corresponding classical network nodes and the classical link in the classical communication network through an uplink; (4) enabling the classical communication network to execute highest distributing efficiency routing algorithm; (5) transmitting acquired classical routing information to the quantum secret key distributing layer and assisting corresponding quantum nodes; (6) building the proper quantum route according to acquired classical information on the quantum secret key distributing layer according to obtained classical information; and (7) conducting following quantum secret key distributing operation after the quantum route is established. The networking method has the advantages of being simple in principle, convenient to operate, easy to achieve, wide in suitable range, capable of strengthening practicability and expandability of the quantum network and the like.
Owner:NAT UNIV OF DEFENSE TECH
Device and method for generating photo-communication waveband continuous variable quantum entanglement source
ActiveCN105867046AAchieve high-fidelity transmissionReduce noiseNon-linear opticsOptical parametric amplifierPlane mirror
The invention provides a device and a method for generating a photo-communication waveband continuous variable quantum entanglement source. The device comprises a photo-communication waveband continuous single-frequency fiber laser, a frequency multiplier, a signal light mode cleaner, a pump light mode cleaner, a dichroic mirror, a total reflection plane mirror with piezoelectric ceramics, a three-resonance non-degeneracy optical parametric amplifier, a crystal temperature controller, a cavity length and phase locking system, a first 45-degree high reflecting plane mirror and a quantum entanglement source detection system. According to the device and the method for generating the continuous variable quantum entanglement source, the device has a compact structure, is high in stability and is matched with the photo-communication waveband; the device adopts a single three-resonance non-degeneracy optical parametric amplifier for directly preparing the photo-communication waveband continuous variable quantum entanglement source, and the transmission loss of the waveband quantum entanglement source in optical fiber is only 0.2dB / km, so that the high fidelity transmission of information is realized; and the device is compatible with the present photo-communication system, so that the quantum entanglement source can become a perfect light source of a practical quantum network.
Owner:山西艾瑞深科技有限公司
Multi-type quantum terminal compatible fusion network access system and method
ActiveCN108111305ARealize seamless dockingDoes not affect normal operationKey distribution for secure communicationPhotonic quantum communicationQuantum channelQuantum network
The invention discloses a multi-type quantum terminal compatible fusion network access system and method. The system comprises a quantum classical network access controller and multiple quantum terminals Alice, the quantum terminal Bob, and a ROADM; each quantum terminal Alice comprises a QKD sender, an Alice quantum service gateway and an Alice service terminal; the quantum Bob comprises a QKD receiver, a Bob quantum service gateway and a Bob service terminal; a quantum signal between the quantum terminal Alice and the quantum terminal Bob dynamically accesses to a quantum channel through theconnected ROADM and the quantum secret key distribution is performed; the Alice quantum service gateway encrypts the service information of the Alice service terminal and then sends the encrypted information to the Bob quantum service gateway to decrypt, the decrypted information is sent to the Bob service terminal to realize the mutual communication of the quantum terminal Alice and the quantumterminal Bob. The quantum and the classical signals are transmitted by using different wavelengths in the same optical fiber, thereby forming a quantum classical fusion network; and the networking cost of the quantum network can be greatly reduced. The quantum channel is fast and dynamically established by using the ROADM, and the flexibility of the quantum secret key distribution network is greatly enhanced.
Owner:NAT QUANTUM COMM GUANGDONG CO LTD
Application system based on quantum keys, and use method of application system
ActiveCN109660340AEasy to work safelyPromote the further development of safety workKey distribution for secure communicationSynchronising transmission/receiving encryption devicesCommunications securityTamper resistance
The invention discloses an application system based on quantum keys. The system comprises institution key management centers arranged at all institutions and used for providing unified quantum key services for application security and communication security, and a national key management center communicating with the institution key management centers of the institutions and responsible for distributing and sending the quantum keys or quantum key IDs for the institutions; and the two institution key management centers need to simultaneously initiate requests of obtaining the same quantum key to the national key management center. A barrier between an entity quantum network and a virtual application network is broken through, so that the high-security characteristics of the quantum keys arefurther extended to the service field, and further development of information security work is promoted; and by utilizing high security of the quantum network, the difficult problem of key distribution synchronization in the service field is solved, and the problems of the authority, credibility and security of key sources are solved, so that the confidentiality and the tamper-proofing performance of service information transmitted in an untrusted network are further guaranteed.
Owner:北京安御道合科技有限公司
Quantum key wireless-distribution method and system used for secure communication of terminal equipment
ActiveCN109525390AReduce difficultyLow input costKey distribution for secure communicationSecure communicationWireless transmission
The invention discloses a quantum key wireless-distribution method used for secure communication of terminal equipment. Seeds of distribution keys used for quantum key distribution are quantum true random numbers. The method comprises the following steps: (1) using a distribution key by a quantum key server to encrypt a quantum key, and sending an encrypted quantum key to terminal equipment through a manner of wireless transmission; and (2) receiving the encrypted quantum key, which is sent by the quantum key server, by the terminal equipment, using the same distribution key to decrypt the encrypted quantum key to obtain the quantum key distributed by the quantum key server. According to the quantum key wireless-distribution method of the invention, distribution of the quantum key and a quantum trunk network are separated, wireless transmission of the quantum key is completed with the only need for means of a traditional communication channel, project deployment is convenient and fast,input costs are low, and a distribution manner is simple; and on the other hand, the seeds used for extending the generated distribution keys are the quantum true random numbers, and security and a security level of wireless distribution of quantum keys can be greatly improved.
Owner:HENGTONG QASKY QUANTUM INFORMATION RES INST CO LTD +1
Broadcasting communication technique of quantum network
InactiveCN101944994APrevent cheatingAvoid mistakesKey distribution for secure communicationBroadcast systems controlBell stateQuantum network
The invention provides a novel quantum broadcasting communication scheme. Only one difference from the transmitting party in the traditional quantum broadcasting protocol is as follows: the scheme realizes that two transmitting parties simultaneously transmit the united confidential information of the two parties to multiple legal receiving parties. In the scheme, the transmitting parties respectively share the multiparticle GHZ state with all the receiving parties, and then the transmitting parties carry out the single particle measurement and publish the check bit; after carrying out inaccurate Bell measurement, each receiving party simultaneously acquires the united confidential information of the transmitting parties according to the result and the check bit; the quantum characteristic ensures the unconditional safety of the protocol; and the application of the induced quantum photon leads the protocol to have detectability on bugging. The communication model can be applied to the fields of the safe democratic decision in a quantum network, the united signal control and the like. In the implementing process of the scheme, the transmitting party only needs to carry out single particle measurement, the receiving party carries out Bell measurement, but only partial Bell state measuring result needs to be distinguished, all the measuring results needs to be inaccurately distinguished, thus the scheme is easy to implement in the quantum network.
Owner:BEIJING UNIV OF POSTS & TELECOMM
Time synchronization method in quantum network
ActiveCN105141390AHigh precisionEliminate delay uncertaintyTime-division multiplexPhotonic quantum communicationTime delaysQuantum network
The invention relates to a time synchronization method in a quantum network. According to the method, a user emits signal photons to a server through the quantum network and records emitting time T1; the server receives the signal photons and records receiving time T2; the server emits the signal photons to the user and records emitting time T3; the user receives the signal photons emitted by the server and records receiving time T4; time delay of a relay station is recorded, so that time relay indeterminacy of the signal photons passing through the relay station can be eliminated, and therefore, time consumed by the emission of the signal photons from the user to the server through the relay station and by means of the quantum network and time consumed by the emission of the signal photons from the server to the user through the relay station can be identical, and the accuracy of time synchronization can be improved.
Owner:ZHEJIANG SHENZHOU QUANTUM NETWORK TECH CO LTD
Identity authentication system based on quantum network
InactiveCN108566273AImprove securityPrevent replay attacksKey distribution for secure communicationQuantum networkMalware
The invention discloses an identity authentication system based on a quantum network. The system comprises a user side A, a user side B, and a quantum network service station; the user side A appliesTGT and corresponding Ticket to the quantum network service station, and acquired Ticket is used for accessing the user side B; each user side is respectively configured with a quantum key card, a corresponding quantum key is stored between a quantum key card and the quantum network service station; and the configured quantum key card is used for performing identity authentication when the user side A is communicated with the quantum network service station and two user sides are communicated. The time stamp of the prior art is replaced by a quantum real random number, and the possibility of the replay attack is solved. The user side key is stored by using the quantum key card but not the user-side storage unit; the quantum key card is independent hardware equipment, and the possibility ofstealing the key by malicious software or malicious operation is greatly reduced. The key can be frequently changed, and the security is greatly improved.
Owner:RUBAN QUANTUM TECH CO LTD
Quantum encryption-based video communication system and method
ActiveCN107124266AEnsure safetyKey distribution for secure communicationCommunications systemNetwork addressing
The invention provides a quantum encryption-based video communication system. The system comprises multiple video meeting modules and a meeting general control module. Each video meeting module at least comprises a video meeting terminal and a corresponding quantum key machine. The meeting general control module comprises a meeting control terminal and a corresponding general control quantum key machine. The general control quantum key machine and the quantum key machines at least access a quantum network. The general control quantum key machine and all the quantum key machines at least prestore network addresses and network accounts of all the quantum key machines and the general control quantum key machine. A point-to-point key pair comprising a first key and a second key grows between the general control quantum key machine and the quantum key machine of each video meeting module. A QKD technology and video communication are combined effectively, so that multi-party encrypted video communication is realized.
Owner:SUZHOU KEDA TECH
Method for encrypting and decrypting information based on quantum network
InactiveCN109639407AImprove securityKey distribution for secure communicationEncryption apparatus with shift registers/memoriesQuantum networkInformation security
The invention relates to the technical field of the quantum communication, and especially a method for encrypting and decrypting information based on a quantum network. The invention aims at providinga method for encrypting and decrypting the information based on the quantum network, and the method is simple in step and high in safety guarantee; a sender performs encryption through a quantum keyK and edited information M to form information M'K, and then encrypts the quantum key K by using an encryption public key Ka to form a ciphertext key K'Ka, and finally combines the ciphertext key K'Kawith the information M'K to form the information E to send out; a receiver firstly acquires a decryption private key Kb by using a U key, and then performs the identity authentication, and decrypts the encrypted information through the decryption private key Kb when the identity authentication is qualified, thereby guaranteeing that only the personnel successfully passing the identity authentication can decrypt the encrypted information and read the content in the information, and the information security is improved.
Owner:浙江神州量子通信技术有限公司
Quantum key distribution method and device
ActiveCN111404672ASolve the problem of over-reliance on trusted relay securityGuaranteed accuracyKey distribution for secure communicationHigh level techniquesFault tolerancePathPing
The invention provides a quantum key distribution method and device, and belongs to the technical field of safety communication. The quantum key distribution method is applied to sending end equipment, and comprises the following steps: preprocessing original session key information, and splitting the original session key information into n pieces of sub-session key information; sending the n pieces of sub-session key information through m paths which are not intersected; wherein n and m are integers greater than 1. The quantum key distribution method is applied to receiving end equipment, andcomprises the following steps: respectively receiving n pieces of sub-session key information through m paths which are not intersected; and obtaining original session key information according to the n pieces of sub-session key information. By means of the technical scheme, the problem that traditional quantum secret communication excessively depends on credible relay safety can be solved, and the fault tolerance and usability of a quantum network are effectively improved.
Owner:CHINA MOBILE COMM LTD RES INST +1
A method and system for realizing a multi-party controlled quantum communication protocol
InactiveCN109257108ASufficient security and confidentialityEnsure safetyKey distribution for secure communicationPhotonic quantum communicationCommunications securityCryptosystem
The invention belongs to the technical field of computer software and discloses a method and a system for realizing multi-party control quantum communication protocol. The system is provided with an entanglement channel construction module, a protocol preparation module, a safety preparation module, a secret key sharing module and a multi-party control module. The invention establishes an entanglement channel between the quanta through an entanglement channel construction module. The protocol preparation module participates in the whole protocol execution process without knowing any information of the target state, which makes the remote state preparation suitable for the remote multi-node quantum network. The quantum cryptography is prepared by the secure preparation module, and the quantum mechanics is used to ensure the communication security. It solves the problem of security distribution of key in classical cryptosystem. Firstly, the multi-party control module executes a classic secret information partitioning procedure to generate secret shares, and sends the secret shares to each participant one-at-a-time by using and one-at-a-time encryption. Secret distribution and eavesdropping detection are simultaneously realized by using multi-particle entangled states.
Owner:GUANGDONG TECHN COLLEGE OF WATER RESOURCES & ELECTRIC ENG
A quantum network system and method based on plug-and-play MDI-QKD
ActiveCN109067518ASimple configurationIncrease legal communication usersKey distribution for secure communicationPhotonic quantum communicationBell stateCross connection
The present invention discloses a quantum network system based on plug-and-play MDI-QKD. The quantum network system comprises a server and a user terminal connected with the server. The server comprises a quantum switch, a Bell state measuring device and a switch module. The switch module and the Bell state measuring device are connected with the quantum switch through the polarization beam splitter. The client includes a plurality of Alice nodes; the quantum switch comprises a control layer and a transport layer. The transport layer comprises a quantum transmission link and an optical cross-connection network bidirectionally connected with the quantum transmission link. The control layer is located in the upper layer, the transport layer is located in the lower layer, and the control layer is bidirectionally connected with the transport layer module through the optical cross-connect network. The invention has the characteristics of simple configuration of the user node in the network,improves the security of the star topology network and increases the MDI-QKDlegal communication user.
Owner:NANJING UNIV OF POSTS & TELECOMM
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