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363 results about "Quantum algorithm" patented technology

In quantum computing, a quantum algorithm is an algorithm which runs on a realistic model of quantum computation, the most commonly used model being the quantum circuit model of computation. A classical (or non-quantum) algorithm is a finite sequence of instructions, or a step-by-step procedure for solving a problem, where each step or instruction can be performed on a classical computer. Similarly, a quantum algorithm is a step-by-step procedure, where each of the steps can be performed on a quantum computer. Although all classical algorithms can also be performed on a quantum computer, the term quantum algorithm is usually used for those algorithms which seem inherently quantum, or use some essential feature of quantum computation such as quantum superposition or quantum entanglement.

Method for evaluating real-time performance of computing power network based on analytic hierarchy process

The invention relates to the technical field of computer networks, and discloses a computing power network real-time performance evaluation method based on an analytic hierarchy process, and the method comprises the steps: collecting a node operation state and task demand data through a sensor, and generating a local performance index in combination with an edge quantum algorithm; simulating a future network state by using digital twinning, and fusing to generate a multi-dimensional performance data set; the AHP weight is dynamically adjusted based on resource deviation and a geological classification model, high-frequency updating is started for high load / fault, and the weight range is expanded for low load; introducing a risk assessment algorithm to quantify a performance-cost-carbon effect conflict level, and triggering resource recovery, optimization prompt or single index suggestion; scheduling strategies are triggered in a grading mode according to evaluation results, and active intervention is started in combination with anomaly detection; the AHP weight is dynamically updated through reinforcement learning, and quantum-classical hybrid algorithm parameters and block chain verification weight are automatically optimized. The real-time response efficiency and the resource utilization rate of the computing power network can be improved.
Owner:GUANGZHOU ZHANGDONG INTELLIGENT TECH CO LTD

Circuit board thermal management optimization method combined with quantum computing

The invention discloses a circuit board heat management optimization method combined with quantum computing, which comprises the following steps of: predicting heat flow distribution of each heat source on a circuit board through a quantum optimization algorithm, identifying a potential overheat area, allocating cooling resources in advance, and determining whether the circuit board is abnormal or not according to a local temperature abnormal condition. A quantum gate control algorithm is adopted to adjust the conduction path and rate of heat, redundant heat is guided to a low-temperature area so as to avoid heat accumulation, the system monitors the temperature change and power consumption fluctuation of a circuit board in real time, parameters of cooling equipment are dynamically adjusted according to a feedback result, the redundant heat is converted into electric energy through a heat energy recovery device and stored, and the cooling efficiency is improved. When the power consumption is low, the heat flow is released to balance the overall heat flow of the circuit board and prolong the service life of equipment. The invention aims to realize more efficient heat dissipation management through a quantum algorithm.
Owner:SHENZHEN MINGBEN TECH CO LTD

Path optimization method and device based on hybrid quantum algorithm, computer equipment and storage medium

PendingCN119398289AImprove path planning efficiencyQuantum computersForecastingPathPingQuantum circuit
The invention relates to a path optimization method and device based on a hybrid quantum algorithm, computer equipment and a storage medium, and the method comprises the steps: obtaining a weight adjacency matrix of an undirected completely weighted graph of a to-be-optimized path; inputting the weight adjacent matrix into a preset quantum circuit for optimization to obtain a first candidate solution and a corresponding first weight; wherein in the encoding and pruning optimization process of the quantum circuit, all candidate solutions are divided into a plurality of steps; the selection of the traveling salesman in each step is coded into a quantum circuit, and corresponding pruning is executed to form a uniform superposition state containing all candidate solutions; and according to the first weight and a preset first threshold value, updating the first candidate solution to obtain a target path. Through the path planning method and device, the problem of low efficiency of path planning in related technologies is solved, quantum resources required for encoding candidate solutions are effectively reduced, and the path planning efficiency can be improved while precise path planning is realized.
Owner:HANGZHOU HIGH-TECH ZONE (BINJIANG) INSTITUTE OF BLOCKCHAIN & DATA SECURITY +1

Quantum gate simulation and control parameter optimization method based on numerical calculation

The invention relates to a quantum gate simulation and control parameter optimization method based on numerical calculation, and the method sequentially comprises the following three modules: a model Hamiltonian matrix representation module can calculate the matrix representation of a model Hamiltonian according to a specific problem; a time evolution and fidelity calculation module of the system discretely solves a Schrodinger equation by using a Hamiltonian matrix, gives a corresponding time evolution matrix, and calculates gate operation fidelity by using the obtained time evolution matrix; and the control parameter optimization module calls the first two modules, optimizes control parameters and quantum gate operation time by adopting a local optimization algorithm or a global optimization algorithm, and gives optimal control parameters and gate operation time. The problem that the gate fidelity of a current superconducting quantum computing system cannot meet the requirement for reliable operation of a practical quantum algorithm is solved, the detailed process of quantum gate operation can be simulated through a numerical calculation method, and the quantum gate operation fidelity is improved by optimizing control parameters.
Owner:EAST CHINA INST OF COMPUTING TECH

Digital certificate authentication method and device based on post-quantum algorithm, equipment and medium

The invention discloses a digital certificate authentication method and device based on a post-quantum algorithm, equipment and a medium, and relates to the field of information security, and the method comprises the steps: obtaining digital certificate application information of a target entity for auditing; if the digital certificate request passes the verification, analyzing the digital certificate request submitted by the target entity, and obtaining a key encryption key of the digital certificate request by using a post-quantum key encapsulation algorithm after verification; then obtaining user information of the target entity and an active cryptographic algorithm public key value in the digital certificate request, generating an anti-quantum-attack digital certificate according to the user information and a public key, and signing and issuing the anti-quantum-attack digital certificate to the target entity; the digital certificate comprises a post-quantum key packaging public key, a post-quantum signature public key and an active-service public key password public key ciphertext of the entity. According to the application, the public key data of the traditional public key cryptographic algorithm can be protected, the quantum computing attack is resisted, the public key plaintext of the traditional public key cryptographic algorithm can be obtained in the service system, and the influence on the original service using the traditional public key cryptographic algorithm is extremely low.
Owner:CETC CYBERSPACE SECURITY TECH CO LTD

Anti-quantum cryptographic dual-mode cryptographic algorithm switching method and system based on dynamic scheduling

The invention provides an anti-quantum national secret dual-mode cryptographic algorithm switching method and system based on dynamic scheduling, and relates to the technical field of dynamic scheduling, and the method comprises the steps: collecting the operation characteristics of a cryptographic communication session, and carrying out the analysis to obtain an evaluation result containing an attenuation inflection point and an algorithm failure time boundary; determining a candidate switching algorithm set from the heterogeneous algorithm pool according to an evaluation result, and calculating a resource overhead expected value and a safety gain expected value of each candidate algorithm; establishing a dual-mode collaborative switching decision mechanism, mapping resource overhead and security gain into a Pareto leading edge solution set in a reserved response interval before an algorithm failure time boundary, and determining a switching scheme by combining a semantic fragment boundary; algorithm switching is executed by inserting a control frame at a semantic fragment boundary, and iterative correction is carried out by utilizing scheduling execution feedback. According to the method, smooth switching between the national cryptographic algorithm and the anti-quantum algorithm is realized, the security and the resource efficiency are both considered, and the long-term security of the cryptographic system is ensured.
Owner:BEIJING CATHAY INTERNET INFORMATION TECH CO LTD +1

Equipment identity authentication and data encryption method and related equipment thereof

The invention discloses an equipment identity authentication and data encryption method and related equipment thereof, and the comprehensive effects of identity credibility, key security superposition and channel encryption capability enhancement are realized by introducing a mixed key system and a double digital signature mechanism into an equipment identity authentication and data encryption process. Meanwhile, a national cryptographic algorithm and a post-quantum algorithm are adopted, and the two cryptographic systems cooperate in parallel in an authentication and encryption link, so that the whole system has a robust anti-attack ability in both a traditional computing environment and a potential quantum computing environment, the accuracy of identity authentication is ensured by a dual signature mechanism, and the counterfeiting difficulty and tampering detection ability are remarkably improved. According to the method, the bidirectional verification chain is constructed in the authentication process, the safety is guaranteed by using the mixed key in the session stage, the safety robustness and the expandability of the system are improved through multi-layer protection, and the whole-process protection of the identity, the key and the data is realized, so that the safety robustness and the expandability of the system are integrally improved.
Owner:SHENZHEN DIGITAL CERTIFICATE AUTHORITY CENT CO LTD

Quantum computing task translation supporting multiple quantum computing technologies

A quantum computing service provides a quantum algorithm development kit that enables a customer to define a quantum task, a quantum algorithm, or a quantum circuit using an intermediate representation. The quantum computing service is then configured to automatically translate the quantum task, quantum algorithm, or quantum circuit into a specific representation specific to a particular quantum computing technology selected by the customer to be used to execute the customer's quantum task, quantum algorithm, or quantum circuit.
Owner:AMAZON TECH INC

Method for applying anti-quantum certificate to TLS1.2 handshake process

The invention discloses a method for applying an anti-quantum certificate to a TLS1.2 handshake process, which realizes the application of an MLDSA anti-quantum signature algorithm and an MLKEM anti-quantum key encapsulation mechanism in the handshake process by expanding a cipher suite and a signature algorithm field of a TLS1.2 protocol. The method specifically comprises the following steps: defining a cipher suite supporting MLKEM and an MLDSA signature algorithm enumeration value; the client declares algorithm support in ClientHello, and the server responds and returns a certificate chain containing the double-antibody quantum certificate; after the client verifies the certificate, the pre-master key is encapsulated by using MLKEM, and the server de-encapsulates the derived session key; and the two parties send Finished messages to each other to complete handshake. According to the scheme, on the premise that a TLS1.2 basic framework is not changed, the communication security is enhanced through double-resistance quantum algorithm integration, international and national cryptographic algorithms are supported, quantum computing attacks can be resisted, meanwhile, adaptation of the international and national cryptographic algorithms is supported, compatibility with an existing system is ensured, the security risk of a traditional cryptographic algorithm in a quantum environment is solved, and the security risk of the traditional cryptographic algorithm in the quantum environment is reduced. And a standardized solution is provided for anti-quantum upgrade of the TLS1.2 protocol.
Owner:BEIJING SKYFAITH TECH CO LTD

Intelligent traffic cooperative control optimization method, device and equipment based on quantum key distribution and digital twinning

The embodiment of the invention discloses an intelligent traffic cooperative control optimization method, device and equipment based on quantum key distribution and digital twinning, and relates to the technical field of intelligent traffic. The method comprises the following steps: transmitting traffic data and spatial information through the quantum secure communication network, and constructing a traffic digital twin mapping model based on the traffic data and the spatial information; the traffic digital twin mapping model is configured to map to obtain a physical traffic system operation state corresponding to the traffic data and the spatial information; accessing the digital twin mapping model into a quantum computing environment, and generating a traffic control strategy based on the operation state of a physical traffic system by using a preset quantum algorithm; and transmitting the traffic control strategy to traffic equipment in a physical traffic system for execution, synchronously transmitting the traffic control strategy to a digital twin mapping model for simulation execution, and optimizing and adjusting the traffic control strategy according to a difference comparison result of a feedback actual execution result and a simulation execution result.
Owner:TECH TRAFFIC ENG GRP CO LTD

Satellite cabin load layout optimization method based on quantum algorithm

The invention relates to a satellite cabin load layout optimization method based on a quantum algorithm, and the method comprises the following steps: listing a mathematical expression form of an optimization target and a limiting condition according to a satellite cabin load layout requirement, and generating a constraint optimization problem model; wherein the optimization target and the limiting condition at least comprise a satellite quality characteristic requirement, a space geometric compatibility requirement, a thermal control requirement, an electromagnetic compatibility requirement, an installation and maintenance requirement and an installation position requirement of special instrument equipment; converting the layout constraint optimization problem mathematical model into an optimization objective function in a secondary unconstrained binary optimization form; solving the optimization objective function by using a quantum optimization algorithm to obtain an optimization vector; and calculating the load position and attitude of the satellite cabin by optimizing the vector, and carrying out inversion to obtain a final satellite cabin load layout scheme. According to the method, the non-deterministic polynomial problem of satellite cabin load layout optimization can be solved in an accelerated manner by utilizing the characteristics of superposition, entanglement, interference and the like of quantum bits, and a new technical approach is provided for improving the design efficiency of a satellite cabin load layout optimization scheme.
Owner:CHINA ACADEMY OF SPACE TECHNOLOGY

Intelligent parking space real-time monitoring and scheduling method and system based on Internet of Things

The invention relates to the technical field of traffic management and Internet of Things technology fusion, in particular to an Internet of Things-based intelligent parking space real-time monitoring and scheduling method and system, and the method comprises the steps: carrying out the denoising, time correction and block chain credible registration of multi-source sensor data, and forming traceable parking space and road load information. A three-dimensional digital twinning environment is generated by means of a neural radiation field, floors and sensors are subjected to hierarchical association through fractal hypergraphs, and floor capacity and cross-floor channels are recorded in a quantum approximation optimization algorithm. Under the guidance of the output scheduling strategy, the parking demand is dynamically received in combination with the Internet of Things platform, and if the floors are insufficient, queuing information is established, and distribution and queuing records are continuously updated in combination with real-time perception. And after the vehicle leaves, the actual occupation data and the departure data are compared for expectation, and the three-dimensional twin model and the quantum algorithm parameters are automatically corrected and written into the block chain. According to the invention, accurate scheduling is realized under multiple floors and multiple scenes, congestion is effectively reduced, and the parking turnover rate is improved.
Owner:HANGZHOU GREENTOWN INFORMATION & TECH CO LTD

SM2 collaborative signature, encryption and decryption system and method fusing anti-quantum characteristics

The invention discloses an SM2 collaborative signature and encryption and decryption system and method fusing anti-quantum characteristics, and relates to the field of cryptography and information security. According to the method, an anti-quantum cryptographic algorithm and a national cryptographic SM2 cooperative computing framework are deeply integrated, and a key security system is constructed: SM2 sub-private keys, anti-quantum key pairs and public keys are acquired and generated through an anti-quantum algorithm software and hardware enhancement module, and the private keys are encrypted and stored and are regularly alternated; on the basis of anti-quantum collaborative signature, encryption and decryption modules, an anti-quantum verification mechanism is embedded, and data is transmitted in combination with a national secret TLCP protocol, so that signature, encryption and decryption operations are completed; the equipment integration and dynamic security control unit monitors a security state, calculates a threat index to generate a protection strategy, and dynamically switches a security mode, so that the problems of insufficient security, vulnerability to attacks and data tampering of a traditional SM2 algorithm under the threat of quantum computing are effectively solved; and the long-term anti-attack capability and the operation reliability of the equipment in a high-security demand scene are remarkably improved.
Owner:ZHEJIANG ICINFO TECH

Short message secure transmission method and system based on post-quantum algorithm, and electronic equipment

The invention relates to the technical field of quantum computers, in particular to a short message secure transmission method and system based on a post-quantum algorithm and electronic equipment, and the method comprises the steps: obtaining short message data with a signature, and carrying out secret key packaging calculation through employing a first mixed public key provided by a second terminal, thereby obtaining a secret key packaging ciphertext and a symmetric secret key; encrypting the short message data with the signature by using the symmetric key to obtain a short message data ciphertext; the key packaging ciphertext and the short message data ciphertext are sent to a second terminal, and the second terminal decrypts the short message data ciphertext to obtain a short message data plaintext; according to the method and the device, a quantum security resisting key negotiation function is provided for the short message by adopting a mixed key encryption mode, quantum attack resisting protection is provided for the content of the short message, information is prevented from being intercepted or tampered in combination with a signature verification mode, and the security of short message transmission is further improved.
Owner:ORIGIN QUANTUM COMPUTING TECH (HEFEI) CO LTD

Quantum compiling

A quantum computer, comprising: at least one CPU and at least one QPU. The CPU includes: a branch predictor configured to form one or more result predictions or algorithm branches of a result of a measurement being performed or to be performed by the QPU; a compiler configured to generate respective sets of quantum gates corresponding to each of the one or more result predictions by performing respective one or more compilation tasks, each of the compilation tasks comprising compiling a portion of a hybrid quantum algorithm; and a quantum gate selector configured to receiving the result of the measurement and respond by passing to the QPU a set of quantum gates from the sets of quantum gates that corresponds to the result of the measurement.
Owner:TECH UNIV BERLIN

Digital certificate issuing method based on post-quantum hybrid algorithm and related device

The embodiment of the invention discloses a digital certificate issuing method based on a post-quantum hybrid algorithm and a related device. A user terminal generates three pairs of public and private keys according to an asymmetric encryption algorithm, a post-quantum key signature algorithm and a post-quantum key encapsulation algorithm; generating a certificate signature request according to the mixed public key comprising the first public key and the second public key and the user identification information; the first public key and the third public key are sent to the CA terminal; the CA terminal generates a mixed secret key signature, a packaging certificate, a secret key packaging ciphertext and an encrypted mixed secret key packaging private key according to the two; the user terminal decrypts the secret key packaging ciphertext and the encrypted mixed secret key packaging private key according to the first private key and the third private key to obtain the mixed secret key packaging private key; according to the method, the mixed key signature and the packaging certificate are installed and are bound with the corresponding private key, so that signing and issuing of the mixed key signature and the packaging certificate can be realized, legal use of the certificate in an anti-quantum algorithm scene is ensured, and information security is improved.
Owner:ORIGIN QUANTUM COMPUTING TECH (HEFEI) CO LTD

Methods and systems for enhancing detection of fraudulent authentication data

A method for enhancing detection of fraudulent authentication data includes receiving, by an electronic device, data during an authentication transaction, computing a feature vector from the received data, and normalizing the feature vector. The method also includes encoding the normalized feature vector into qubits, expanding, using at least one quantum algorithm, the normalized feature vector into a high-dimensional space, and detecting in the high-dimensional space anomalies indicative of fraud based on the qubits. Furthermore, the method includes calculating, based on the detected anomalies, a confidence score reflecting a likelihood that the received data is genuine and comparing the confidence score against a threshold value. In response to determining the confidence score fails to satisfy the threshold value, the method determines that the received data requires secondary authentication.
Owner:DAON TECH

Methods and systems for enhancing detection of morphed biometric modality data

A method for enhancing detection of morphed biometric modality data is provided that includes receiving, by an electronic device, biometric modality data of a person, extracting feature vectors from the biometric modality data, normalizing the feature vectors, encoding the normalized feature vectors into qubits, and expanding, using at least one quantum algorithm, the normalized feature vectors into a high-dimensional space. Moreover, the method includes generating a distribution from the high-dimensional space based on the qubits, calculating a deviation between the generated distribution and a corresponding record high-dimensionality feature vector distribution of the person, and comparing the calculated deviation against a threshold deviation value. In response to determining the deviation satisfies the threshold deviation value, the method determines the received biometric modality data was morphed.
Owner:DAON TECH

Quantum algorithm code generation method and device, equipment and storage medium

The invention discloses a quantum algorithm code generation method and device, equipment and a storage medium. The method comprises the steps that first prompt information is obtained; at least inputting the first prompt information into a generation model, and generating quantum algorithm text description information by the generation model; the quantum algorithm text description information is used for describing candidate quantum circuits for realizing a target task; and inputting second prompt information obtained based on the quantum algorithm text description information into the generation model, and generating an executable quantum algorithm code by the generation model.
Owner:CHINA CITIC BANK CO LTD

Anti-quantum computing communication implementation method and system and computer equipment

The invention discloses an anti-quantum computing communication implementation method and system and computer equipment. The method comprises the steps that a PQC channel is established with a front-end server, the PQC channel outputs a first master key through a post-quantum algorithm, the first master key derives a second master key, and the second master key is sent to a target server; sending the first key negotiation information to a front-end server; receiving second key negotiation information sent from the front-end server, decrypting the second key negotiation information by using a second master key, and calculating to obtain a session key; and the client realizes encrypted communication with the target server by using the session key. Compared with the prior art, the method has the advantages that the PQC channel protected by the post-quantum algorithm is firstly established between the client and the front-end server, and then the security channel is used for protecting a plurality of classical security channels established between the client and different target servers, so that the attack of a quantum computer can be effectively resisted.
Owner:ORIGIN QUANTUM COMPUTING TECH (HEFEI) CO LTD

Data processing method, device and equipment and readable storage medium

The invention provides a data processing method, device and equipment and a readable storage medium, and the method comprises the steps: obtaining a face data set containing multiple pieces of face feature data; according to the face data set, an original population corresponding to the face data set is obtained, the original population comprises a plurality of feature individuals, and each feature individual in the plurality of feature individuals comprises a plurality of pieces of face feature data with the same number; performing initialization processing on the original population according to a preset circular chaotic mapping algorithm and a preset quantum algorithm to obtain an initialized population; updating the initialized population according to the fitness value of each feature individual in the initialized population, and obtaining an updated population; and according to the fitness value of each feature individual in the updated population, determining a target feature individual, and determining the face feature data corresponding to the target feature individual as target face feature data. According to the scheme of the invention, the accuracy and efficiency of face feature data recognition can be improved.
Owner:GUIZHOU UNIV

Extensible encryption network protocol implementation method, cryptographic algorithm negotiation method, system, equipment and medium

The invention provides an extensible encryption network protocol implementation method, a cryptographic algorithm negotiation method, a system, equipment and a medium, and relates to the technical field of information security. The method comprises the steps of obtaining an algorithm calling request of an application layer; calling a unified program interface of an algorithm compatibility layer according to the information of the cryptographic algorithm to be called; a unified program interface is adopted, and a query request of a to-be-called cryptographic algorithm is initiated to a providing program interface through a core program interface in the algorithm compatibility layer; a program interface is provided, and based on a query request of a to-be-called cryptographic algorithm, a calling method of the to-be-called cryptographic algorithm is queried from a preset cryptographic algorithm list; and calling the to-be-called cryptographic algorithm in the post-quantum cryptographic algorithm library in the extensible layer by providing a program interface. According to the method, the new cryptographic algorithm in the post-quantum cryptographic algorithm library is called, so that the expansibility of the cryptographic algorithm is improved, and the capability of resisting the attack of the quantum algorithm is also improved.
Owner:中电信量子信息科技集团有限公司

Certificate-based post-quantum encryption migration system, method, device and medium

The invention discloses a certificate-based post-quantum encryption migration system, method, device and medium, a key sender uses a second public key to perform asymmetric encryption on a post-quantum public key and a first symmetric sub-key in a post-quantum public-private key pair, and uses a first private key in a first asymmetric public-private key pair to perform signature, so that the post-quantum public key and the first symmetric sub-key in the post-quantum public-private key pair are signed; the first ciphertext is sent to a secret key receiver; and the secret key receiver performs signature verification on the first ciphertext by using the first public key, and decrypts the first ciphertext by using a second private key in the second asymmetric public and private key pair after the signature verification is passed, thereby obtaining a post-quantum public key and a first symmetric sub-key. Compared with a post-quantum algorithm key migration scheme which is manually distributed, the post-quantum cryptographic key migration method improves the efficiency and security of post-quantum cryptographic key migration.
Owner:CHINA UNIONPAY

Distillation tile layouts and scheduling within a magic state factory for magic state distillation techniques

Techniques for optimizing distillation tile layouts for distillation tiles in a magic state factory of a quantum computer and a scheduling of distilled magic state production (e.g., using temporally encoded lattice surgery based (TELS-based) magic state distillation) using said distillation tiles are disclosed. Customized designs for distillation tile layouts that reduce space-time costs when executing a given quantum algorithm are presented, wherein the designs may be customized based, at least in part, on a selected classical error-correcting code and distillation circuit, on a decision whether to perform parallelized TELS-based magic state distillation, etc. Production of distilled magic states may then be configured using a round robin scheduling design in order to minimize potential time in which a processing core of the quantum computer is waiting for another newly distilled magic state from the magic state factory to use for logical computation related to the given quantum algorithm being executed.
Owner:AMAZON TECH INC

Method for effectively simulating general quantum computing based on classical circuit network

The invention discloses a method for effectively simulating general quantum computing based on a classical circuit network, and relates to the technical field of quantum computing simulation, and the method comprises the following specific steps: converting data into a voltage signal through input voltage coding, constructing a single-bit gate and a two-bit gate by using an operational amplifier and an analog multiplier, and constructing a single-bit gate and a two-bit gate; according to the invention, the general quantum computation is simulated by a classical circuit network, an n-bit unitary matrix is decomposed and reconstructed by means of input voltage coding quantum state and voucher / two-bit gate modular design, and the high-efficiency simulation of general quantum computation is realized. Quantum gate linear transformation is reproduced, quantum calculation universality is achieved, voltage signals and data are converted through a reflection formula, signal distortion is avoided, multi-level gate circuit cascading is supported, and a flexible and stable platform is provided for quantum algorithm verification and the like.
Owner:BEIJING INST OF TECH

Two-party quantum secret magnitude comparison method based on two-level bell state

PCT designated stage expiredWO2025118107A1Key distribution for secure communicationAlice and BobThird party
The present invention relates to the technical field of communications. Disclosed is a two-party quantum secret magnitude comparison method based on a two-level bell state. The present invention comprises the following steps: step I: protocol participants Alice and Bob respectively possessing their own secret values SA and SB, and Alice and Bob sharing a secure n-bit key KAB=KAB1KAB2KKABn by means of QKD; and step II: Alice and Bob sharing a collision-resistant hash function Hash(.) that is resistant to quantum algorithms, and with the assistance of a semi-trusted third party (TP), Alice and Bob completing the comparison between the magnitudes of the secret values of the two. By means of the present invention, an equality relationship and magnitude relationship between the secret values of the two participants, i.e. Alice and Bob, can be effectively determined; a quantum state prepared by the TP is a two-particle maximally entangled Bell state; and by means of the first eavesdropping detection, the absence of eavesdroppers and the honesty of the TP are verified.
Owner:ANHUI SCI & TECH UNIV

Implicit certificate public key processing method and system based on post-fusion quantum algorithm, and user side

The invention provides a post-quantum algorithm fused implicit certificate public key processing method and system and a user side, and relates to the technical field of password application. The method comprises the following steps: a user side obtains a national secret user declaration public key of a target user from an institution side of a trusted institution, the user side generates a national secret user public and private key pair of the target user according to the national secret user declaration public key, and the user side generates a post-quantum user public and private key pair of the target user; the user side obtains a post-quantum user declaration public key from the institution side of the trusted institution according to a national secret user public key in the national secret user public and private key pair and a post-quantum user public key in the post-quantum user public and private key pair, the user side splices the national secret user declaration public key and the post-quantum user declaration public key to obtain a mixed declaration public key of a target user, and the mixed declaration public key is used for sending the mixed declaration public key to the user side of the trusted institution. A mixed declaration public key is disclosed to a public key using end; the mixed declaration public key is used for performing encryption and decryption processing or signature verification processing on the implicit certificate of the target user, so that the implicit certificate public key can resist the attack of the quantum algorithm.
Owner:中电信量子信息科技集团有限公司

Data encryption and access control device of intelligent fire-fighting Internet of Things system

The invention discloses a data encryption and access control device for an intelligent fire-fighting internet of things system in the technical field of data protection. The data encryption and access control device comprises a dynamic encryption engine, a multi-mode access control module and a safety coprocessor. The dynamic encryption engine adaptively selects an SM4-GCM and SM9-Kyber hybrid encryption algorithm based on the data sensitivity level and the equipment type, so that the transmission encryption delay is less than or equal to 0.9 ms; the multi-mode access control module supports dynamic permission upgrading and tamper-proof evidence storage in a fire emergency scene through a three-layer architecture of RBAC + ABAC + block chain auditing; the security coprocessor adopts an FPGA hardware acceleration SM4 algorithm, and the energy efficiency ratio reaches 15Gbps / W. Anti-quantum security: the post-quantum algorithm Kyber-768 passes through the third round of authentication of NIST, and the key negotiation efficiency is improved by 3 times compared with that of the traditional ECDH (test data: the negotiation time consumption of 100,000 times is reduced from 18 seconds to 5.7 seconds). Technical optimization of the device comprises fine-grained access control innovation, a multi-modal strategy engine, block chain auditing and tracing, hardware acceleration efficiency optimization and distributed key management.
Owner:GUOANYUN (XIAN) TECH GRP CO LTD

Parameter-setting method, system, and apparatus, device, storage medium, and program product

PCT designated stage expiredWO2025098136A1Quantum computersMachine learningPath lengthQuantum algorithm
A parameter-setting method, system, and apparatus, a device, a storage medium, and a program product, relating to the technical field of database systems. The method comprises: obtaining parameter value ranges of various parameters of a database and a target function of the database (S310), the target function being used for measuring the performance index of the database; on the basis of the parameter value ranges of the various parameters and the target function, constructing a traveling salesman problem (TSP) model (S320), paths in the TSP model being parameter value combinations of the various parameters, and the path length in the TSP model being the target function; on the basis of the TSP model, constructing a quantum algorithm model (S330); on the basis of the quantum algorithm model, solving for the optimal solution of the TSP model (S340); and, on the basis of the parameter value combination corresponding to the optimal solution of the TSP model, setting the various parameters of the database (S350).
Owner:TENCENT TECHNOLOGY (SHENZHEN) CO LTD

Data Compression With Quantum-Resistant Intrusion Detection

Data compression with quantum-resistant intrusion detection, that measures in real-time the probability distribution of an encoded data stream and analyzes entropy characteristics across multiple bit-scale windows to detect both classical and quantum-generated intrusions. The system compares the probability distribution to a reference probability distribution and uses statistical algorithms to determine divergence between distributions while simultaneously analyzing entropy cascade patterns characteristic of quantum computing sources. When divergence exceeds configured thresholds or quantum-generated characteristics are detected, the system generates intrusion alerts identifying the threat type. The system comprises encoding and decoding machines, an intrusion detection engine that performs multi-scale entropy analysis, a codebook training engine that creates quantum-resistant codebooks using entropy-stratified training algorithms, and databases including a quantum signature database storing compression patterns of known quantum algorithms. The codebook training engine adaptively retrains encoding algorithms upon detecting new quantum patterns, maintaining system effectiveness against evolving quantum threats.
Owner:ATOMBEAM TECH INC