37 results about "Random Number Seed" patented technology

The invention discloses a drainage basin monitoring network layout optimization method based on mutual information active learning. The method comprises the following steps: data processing; constructing an integrated learning prediction model composed of a plurality of LSTMs, initializing each LSTM model parameter by setting different random number seeds, and iteratively updating the model parameters; constructing a covariance matrix of prediction results of the potential monitoring points by using the trained integrated learning prediction model; on the basis of an active learning algorithm of mutual information maximization, mutual information gains of all candidate sites added into the current monitoring network are calculated, candidate points enabling the mutual information gains to be maximum are selected, and information value sorting is carried out on potential monitoring points according to the sizes of the mutual information gains; and outputting a monitoring station optimization suggestion list. According to the method, uncertainty is scientifically quantified by adopting an ensemble learning method, and global information value is evaluated by adopting a mutual information maximization strategy, so that point selection decision does not depend on subjective experience any more, but strict calculation based on data and information theory, and the scientificity of decision is remarkably improved.

The application belongs to the technical field of artificial intelligence, and particularly relates to a private AI model calling method and system based on encrypted data interaction, which comprises the following steps: S1, a client generates a series of structured random numbers through a key derivation function based on a main random number seed and each dimension index, encrypts an original input vector into an initial ciphertext vector by using a partial homomorphism encryption public key and the structured random numbers, generates a conditional re-encoding key pair for nonlinear calculation in the AI model, and sends a re-encoding public key to a server. The application can eliminate the confusion ciphertext, so that the server side constructs a quasi-gradient noise based on the intermediate state of the calculation process and injects the result, resisting side channel attacks on the output ciphertext; and the client can reconstruct and remove the noise, so that the lossless calling result is obtained without sacrificing any calculation accuracy, and end-to-end privacy protection of the whole model reasoning process is realized.

The embodiment of the invention provides a vehicle cloud interaction data transmission method, device and equipment, a medium and a vehicle, and relates to the technical field of data transmission. The method comprises the following steps: acquiring a dynamic key, and a VIN code and a TCODE code of a vehicle; wherein the VIN code can uniquely identify a vehicle, and the TCODE code can uniquely identify a vehicle-mounted terminal in the vehicle; on the basis of a specified random number seed, performing supplementation adjustment on the VIN code and the TCODE code to obtain a first plaintext and a second plaintext; symmetrically encrypting the first plaintext and the second plaintext according to the dynamic key to obtain a first ciphertext corresponding to the first plaintext and a second ciphertext corresponding to the second plaintext; splicing the first ciphertext and the second ciphertext to obtain a spliced ciphertext, and performing asymmetric encryption on the spliced ciphertext to obtain a third ciphertext; and determining a target key according to the specified length and the third ciphertext, and performing encryption or decryption verification on the vehicle cloud interaction data based on the target key, so that the possibility that the key is cracked and exposed can be reduced.

The invention provides an automatic construction method and system for large-scale image editing data. Generating M initial setting editing instructions according to the context general object data set; expanding the initial setting editing instruction by utilizing the basic large language model to obtain N basic expansion editing instructions; taking a real image generated by the non-AI as an anchor point, improving a diffusion model by using image filling, and generating a source image Os and a target image Qt according to the real image and the corresponding image description; operating P times of image filling to improve the diffusion model by using different random number seeds, and screening by using an automatic mixing index to filter out low-quality generation samples; the image filling improved diffusion model uses a distillation training stable diffusion framework, and the data generation speed is increased by P times.

Embodiments of the present application relate to the technical field of communication, and disclose an access method, system, electronic device and computer readable storage medium. The access method comprises: receiving a login request of a client; generating a random number seed and sending the random number seed to the client after the login request is verified successfully; receiving an access request sent by the client; wherein the access request carries a name-value pair, the name in the name-value pair is a value obtained by the client after a serialization operation on the random number seed; and the name in the name-value pair is verified, and after the verification is passed, the value in the name-value pair is determined to be legal, so that system resources can be saved while ensuring access security.

Provided in the present application are a secure multi-party computation method and an electronic device. The method comprises: a first device and a second device negotiating a pseudo-random number seed; first, in a trusted execution environment, the first device generating a random number on the basis of the pseudo-random number seed, and generating an auxiliary parameter on the basis of the random number, a first parameter Y, and a computation task corresponding to Y; then, receiving an encrypted data fragment x1 sent by the second device, and in the trusted execution environment, determining z1 on the basis of x1, Y, the auxiliary parameter and the computation task; and subsequently, sending z1 to the second device, and the second device determining a sum of M2 and z1 as a computation result of a computation task corresponding to X and Y. The technical solution provided in the present application can reduce the communication overheads during secure multi-party computation.

The invention belongs to the technical field of nuclear reactor physical simulation and safety analysis, and discloses a nuclear reactor passive start-up simulation method based on a Monte Carlo method, which comprises the following steps: calculating a single sample based on a Monte Carlo direct simulation method, modifying a random number seed in an input card to obtain a plurality of calculation results of mutually independent samples, and calculating the single sample according to the calculation results. And finally, obtaining a probability distribution result of the weak neutron field through statistics. The method can accurately describe the physical process of the weak neutron field stage, and is suitable for a three-dimensional complex reactor.

This invention relates to the field of industrial control system technology and discloses a fault diagnosis method for pipe production lines based on digital twins. The method includes: providing a discrete physical state library, wherein each address mapping node maps to a feature parameter vector and a control feedforward compensation matrix; generating multi-dimensional projection basis vectors based on random number seeds and fixing them into a mapping projection matrix; mapping the feature parameter vectors to projection sequences and generating mapping feature codes using a positive / negative sign quantization criterion; reconstructing the index topology of the discrete physical state library based on the mapping feature codes; acquiring real-time feedback noise sensing signals and generating real-time mapping feature codes; matching and addressing address mapping nodes in the addressing memory interval and retrieving the corresponding matrix; and implementing control command phase deviation correction. This invention improves the physical tolerance determinism of discrete digital model addressing and eliminates control command phase lag caused by analytical calculation delays.

The embodiment of the invention provides a data communication method and device, a storage medium and electronic equipment, the method is applied to a vehicle-mounted system, the vehicle-mounted system comprises a first controller and a second controller, and the method comprises the following steps: executing a forward verification method; after the first controller verifies the first signature value, a reverse verification method is executed; after the second controller verifies the second signature value, the second controller performs data communication with the first controller, and before data communication, the first controller and the second controller perform bidirectional verification of identity information based on the random number seed and the signature value; after the identity information of the first controller and the identity information of the second controller pass verification, the first controller and the second controller conduct data communication, an attacker can be prevented from counterfeiting the identity, it is ensured that data cannot be tampered or stolen in the transmission process, and therefore the safety of data communication in the vehicle-mounted system is improved.

The invention discloses an all-digital phase-locked unit and a jitter clock signal generation method, relates to the field of semiconductor integrated circuit design, and provides the all-digital phase-locked unit aiming at the problem that the jitter characteristic of a random number source generated by a true random number at present is difficult to accurately control. The all-digital phase locking unit comprises an adjustable filtering module, a jitter control module and an output module, and adopts an all-digital form. Wherein the inherent jitter in the all-digital phase-locked unit can be controlled by presetting the gain to adjust the loop bandwidth. A random number seed is injected through a jitter control module to carry out random modulation on a control word, the bit width of random modulation is controlled by a preset jitter bit width, controllable external superposition jitter is superposed on the basis of internal inherent jitter, a complex and controllable mixed entropy source is formed, and a jitter enhanced and controllable jitter clock signal is generated. Therefore, the true random number with controllable jitter characteristic and larger information entropy is obtained according to the jitter clock signal, and the quality and the stability of the true random number are improved.

The invention provides a random number generation circuit and method of a memory and the memory. The random number generation circuit comprises a random enable signal generation module, a clock module and a random number generation module which are connected in sequence, the random enable signal generation module is used for detecting the power-on duration of the power-on process state machine and the working duration of the charge pump circuit when the write-in operation state machine controls the write-in operation so as to obtain a random enable signal and output the random enable signal to the clock module; the clock module adjusts the frequency and phase of the random enable signal to obtain a random number seed and outputs the random number seed to the random number generation module; the random number generation module generates a random number sequence corresponding to the random number seed based on the random number seed. The unique random enable signal of the memory has excellent random characteristic, the true random number can be generated at lower cost, and the address of the to-be-scanned storage area in the memory is specified through the true random number to find out the storage unit needing to be repaired, so that the scanning randomness of the to-be-scanned storage area is improved.

The present disclosure provides a SQL statement execution method and device, system, electronic equipment and storage medium; it relates to the technical field of computers. The method comprises the following steps: obtaining a target SQL statement to be executed for a target business scenario, the target SQL statement being a concurrent SQL statement under the target business scenario and a SQL statement binding a variable; generating a random number seed, and adding a distinguishing condition to the target SQL statement according to the random number seed to obtain a plurality of corresponding SQL condition statements; the execution result of each SQL condition statement is the same as the execution result of the target SQL statement; and the plurality of SQL condition statements are executed respectively to realize concurrent execution of the target SQL statement. The present disclosure can solve the mutual exclusion lock contention problem caused by parallel execution of the same SQL statement by multiple sessions, and the access delay and system lag problem caused thereby.

The invention relates to the technical field of inverter pulse width modulation, and particularly provides a random pulse width modulation method and system and a storage medium, and the method comprises the steps: collecting an initial bus voltage and a three-phase current based on an ADC module; solving a difference between the initial bus voltage after filtering and the initial bus voltage before filtering to obtain a random number seed; calculating to obtain a random number; calculating a three-phase voltage based on the three-phase current, and performing sector judgment to obtain a maximum voltage value and a minimum voltage value in different sectors; calculating an overmodulation phase voltage based on the voltage maximum value and the voltage minimum value; calculating a common-mode voltage based on the initial bus voltage, the random number, the maximum voltage value and the minimum voltage value; injecting the common-mode voltage into the over-modulation phase voltage to obtain a three-phase modulation voltage, and performing normalization processing to obtain a modulation voltage; and carrying out carrier period distribution based on the modulation voltage to obtain conduction time of upper and lower bridge arms. The random number calculation is simplified, the carrier frequency does not need to be changed when the electromagnetic noise is reduced, and the consumed calculation resources are less.

The application discloses a kind of based on inter-information active learning's watershed monitoring network layout optimization method, comprising: data processing;Integrated learning prediction model is built by multiple LSTMs, each LSTM model parameter is initialized by setting different random seed, and model parameter is iteratively updated;The covariance matrix of the prediction result of potential monitoring point is constructed using the integrated learning prediction model trained;Based on the active learning algorithm of inter-information maximization, the inter-information gain of all candidate sites joining the current monitoring network is calculated, the candidate point with the maximum inter-information gain is selected, and the information value of potential monitoring point is sorted according to the size of inter-information gain;Output monitoring site optimization suggestion list.The application uses integrated learning method to scientifically quantify uncertainty, uses inter-information maximization strategy to evaluate global information value, so that site selection decision is no longer dependent on subjective experience, but based on data and rigorous calculation of information theory, significantly improve the scientific nature of decision-making.

This invention discloses a method and system for symmetric encrypted communication between a UAV and its storage compartment based on environmental entropy. The communication method includes: S1, before the UAV leaves the compartment, the storage compartment collects environmental entropy sources to form an initial data set; S2, the initial data set is hashed and truncated to output a symmetric encryption key; S3, after the storage compartment transmits the symmetric encryption key, the UAV generates an initial message and obtains the current timestamp during its exit operation; S4, the UAV processes the initial message in blocks to obtain standard data blocks; S5, a random number seed is generated using the key and timestamp as input; S6, a permutation vector is obtained based on the random number seed, the data block sequence is rearranged, an encrypted message is generated, and transmitted to the storage compartment; S7, the storage compartment performs inverse permutation restoration processing on the encrypted message and parses it to obtain the initial message. The technical solution disclosed in this invention can generate an unpredictable, truly random key, ensuring the communication security between the UAV and the storage compartment.

The application discloses a kind of security methods for improving trusted outsourcing cloud auditing based on blockchain, method includes: combining cloud auditing with blockchain, using verifiable random function, secure multi-party computation technology, propose the security method of trusted outsourcing cloud auditing based on blockchain;Allow anyone to access and verify the data stored therein, through smart contract technology to realize the automatic auditing and reward mechanism;Adopt PoS consensus mechanism, cryptography tool VRF that can produce verifiable random number, secure multi-party computation, encryption random number seed technology, propose a kind of unbiased random selection algorithm for auditor, to ensure the randomness of selecting independent auditor from blockchain.The application aims to solve the problems of security, scalability and fairness existing in the existing blockchain-based cloud auditing system, to realize the efficient blockchain consensus mechanism, to ensure the rights and interests and randomness of participants, so as to improve the overall performance and credibility of blockchain system.

The application discloses a kind of pseudo-random number generation methods based on UDS 27 diagnostic authentication service, comprising: receiving diagnostic service 27 request;Read physical variable and mixed entropy source;Check whether the last random seed exists, if yes, enter S4, if not, enter S5;S4, load history seed, and enter S6;S5, use default initial seed, and enter S6;S6, seed is combined processing;Based on the seed value after mixed processing generates new random number;New seed is saved to nonvolatile memory;Format response data;Complete 27 authentication.The pseudo-random number generation method based on UDS 27 diagnostic authentication service of the application, improve the entropy value of random number by multi-factor combination, ensure high-entropy randomness;While superimposed history seed to ensure seed randomness, ensure random sequence continuity, to avoid being illegally simulated through 27 security access authentication service, attack ability is strong.

The application provides a pseudo-random number seed generation method and device based on a blockchain, the method comprising: a transaction request node creating a high-quality pseudo-random number, hashing the pseudo-random number to obtain a random number seed, and attaching the random number seed to transaction data and signing the random number seed; the transaction request node publishing the transaction data signed by the digital signature to the blockchain, each transaction response node in the blockchain searching the random number seed to obtain a final random number seed, and verifying the validity of the final random number seed; and using the final random seed to generate a random number to participate in a block proposal process or as an input of a smart contract, and completing a complete transaction. Compared with related technologies, the pseudo-random number seed generation method and device based on the blockchain provided by the application can realize the generation of a secret, tamper-resistant, unpredictable, anti-collision and publicly verifiable random seed.

The invention discloses a pseudo-random number generation method, computing equipment and a pseudo-random number generator, and the method comprises the steps: determining an initial state according to a random number seed; multiple rounds of iteration generation are conducted through the initial state, multiple pseudo-random numbers are generated, any round of iteration generation specifically comprises the steps that a preset permutation function is used for conducting permutation processing on the generation state corresponding to the current round, a processing result is determined, the generation state of the first round is the initial state, and the generation state of the second round is the initial state; the permutation function has pseudo-randomness; and intercepting the processing result, determining the pseudo-random number corresponding to the current round, and taking the processing result as the generation state corresponding to the next round of the current round, so that the pseudo-random number stream with the side channel attack defense capability can be quickly and efficiently generated under the condition of not replacing the random number seed. The method can cope with a large amount of requirements of pseudo-random numbers meeting security in scenes such as privacy calculation and the like.

A first processing sends a validation request is sent, which includes a random number seed and a nonce to a second processing device. The first processing device generates a first set of random numbers using the random number seed according to an algorithm for random number generation, and maps the generated first set of random numbers to memory blocks that include a copy of software for the second processing device. A first hash is calculated from contents of the mapped memory blocks concatenated to the nonce. A second hash, calculated using information included in the validation request, the mapping model, the software for the second processing device, and the nonce is received. An action is automatically performed when the hashes do not match.

The invention discloses a tampering perception traceability watermark marking method and device for a generative image, and the method comprises the steps: firstly building a copyright watermark and a positioning watermark in a watermark embedding process, employing a double-mark combined sampling strategy, carrying out the coding of the copyright watermark and the positioning watermark, and generating an image with double marks; in the watermark extraction process, watermark latent representation is reconstructed through inverse sampling, and a reconstructed copyright watermark and a reconstructed positioning watermark are obtained; generating an original positioning watermark by using the reconstructed positioning watermark and the shared random number seed, and performing tampering positioning by detecting a high-frequency change region; and the tampered region is selectively eliminated by using the tampered information, so that the decoding accuracy of the copyright information is improved. According to the method and the device, the tampering positioning strategy is designed according to the sensitivity of pixel modification, and the tampering positioning result is used as confidence guidance of watermark decoding, so that the accuracy of watermark extraction under the tampering distortion condition is improved.

The embodiment of the invention provides a verification code verification method and device, equipment, a storage medium and a program product. The method comprises the following steps: receiving a verification sequence and a random number seed sent by a verification center, and generating a vibration button corresponding to each verification number on a front-end page of a target terminal; in the process that the user manipulates the at least two vibration buttons one by one, the target terminal vibrates according to the vibration mode corresponding to the manipulated vibration buttons; generating a control input sequence of the user based on the control of the user on the at least two vibration buttons; and disrupting the control input sequence based on the random number seed to obtain a disrupted to-be-verified sequence, and sending the to-be-verified sequence to a verification center, so that the verification center determines a verification result based on the random number seed, the to-be-verified sequence and the verification sequence. According to the verification scheme of the verification code, the convenience of inputting the verification code by the user can be improved, and meanwhile, the security of the verification code is improved.

The invention is applicable to the technical field of computers and information security, and provides a mobile equipment uniqueness authentication method, which comprises the following steps that: an application program controls a screen of mobile equipment to execute an illumination sequence; in the process of executing the illumination sequence by the screen, acquiring image data by using a front image acquisition device, and sending the image data to a server; the application program performs physical living body detection on the mobile equipment based on the image data, generates an application program side local light response non-uniform fingerprint based on the currently generated random number seed and the image data when the mobile equipment passes the physical living body detection, and sends the application program side local light response non-uniform fingerprint to the server side; and the server side generates a local light response non-uniform fingerprint of the server side based on the random number seed and the received image data, and performs uniqueness authentication on the mobile device based on the local light response non-uniform fingerprint of the server side and the local light response non-uniform fingerprint of the application side. The reliability of uniqueness authentication of the mobile equipment can be improved.

The invention belongs to the technical field of artificial intelligence, and particularly relates to a privatized AI model calling method and system based on encrypted data interaction, and the method comprises the following steps: S1, a client generates a series of structured random numbers through a key derivation function based on a main random number seed and indexes of all dimensions, an original input vector is encrypted into an initial ciphertext vector by using a partially homomorphic encryption public key and a structured random number, a conditional recoding key pair is generated for nonlinear calculation in an AI model, and a recoding public key is sent to a server. According to the method, the obfuscated ciphertext can be eliminated, so that a server side constructs quasi-gradient noise based on an intermediate state of a calculation process and injects a result, and side channel attacks on the output ciphertext are resisted; and the client can reconstruct and remove the noise, so that a lossless calling result is obtained on the premise of not sacrificing any calculation precision, and end-to-end privacy protection of the whole process of model reasoning is realized.

The invention provides a multi-party security computing method and electronic equipment, and relates to the technical field of information security, and the method comprises the following steps: first equipment and second equipment negotiate a pseudo-random number seed; the method comprises the following steps that: first equipment generates a random number based on a pseudo random number seed in a trusted execution environment, and generates an auxiliary parameter according to the random number, a first parameter Y and a calculation task corresponding to the Y; then an encrypted data fragment x1 sent by the second device is received, z1 is determined in the trusted execution environment according to x1, Y, the auxiliary parameters and the calculation task, the sum of z0 and z1 is equal to the calculation result of the calculation task corresponding to X and Y, z0 = M1, and M1 is determined by the first device according to the random number; and then z1 is sent to the second device, and the second device determines the sum of M2 (M1 is determined by the second device according to the random number, and M1 = M2) and z1 as the calculation result of the calculation task corresponding to X and Y. According to the technical scheme provided by the invention, the communication overhead in a multi-party security calculation process can be reduced.

The application provides an encryption coding method and device in DNA storage, electronic equipment and storage medium, and relates to the technical field of DNA storage. The encryption coding method comprises the following steps: obtaining to-be-stored data, a first random number sequence and a second random number sequence generated by a hyperchaotic pseudo-random sequence generator; encrypting the to-be-stored data by using the first random number sequence to obtain source data; performing DNA Raptor coding on the source data, and introducing the second random number sequence into the DNA Raptor coding process as a random number seed to obtain at least one coded data; and converting each coded data into a corresponding DNA sequence based on a DNA base mapping rule, and generating a target DNA sequence from the DNA sequences corresponding to the coded data. The application solves the problem that data security is not considered in the DNA storage process in the related art.

This invention discloses a key exchange method, apparatus, and storage medium based on a modular lattice. The key exchange method includes: Party A generating a random number seed, obtaining a compressed public key, and sending it to Party B; Party B using the random number seed to obtain the compressed public key; recovering data from the received compressed public key from Party A and calculating a temporary key; processing the temporary key using a segmented signal function to obtain a signal value; using the signal value to coordinate the temporary key to obtain a shared temporary key, thereby generating a verification tag and deriving the final key; Party A recovering data from the received compressed public key from Party B, recalculating the verification tag, and comparing them; only when a match is successful, the final key is derived using the same method. This ensures the randomness of the data and the ability to detect tampering with the data received by Party A, thus achieving higher security. This invention significantly reduces the failure probability while improving security.

A data set integrity verification method, a model training method and a computing device relate to a to-be-tested model obtained through training according to a real data set, the real data set comprises a training sample, and the training sample comprises a target sample. The sample number of the target sample in the real data set is generated by using a preset pseudo-random number generation algorithm and taking a first identifier as a random number seed, and the first identifier is determined by using a preset Hash algorithm according to the training sample in the real data set; the prediction result distribution of the to-be-tested model for the target sample and the real data set is different; acquiring a nominal data set; selecting training samples in the nominal data set according to a Hash algorithm and a pseudo-random number generation algorithm to obtain a probe set; determining the prediction accuracy of the to-be-tested model for the probe set; whether the nominal data set is the real data set is determined according to the prediction accuracy corresponding to the probe set, and tiny tampering of the real data set used in the training process can be recognized with low calculation cost.

The application relates to the technical field of games and provides a game activity generation method and device, a server, a server cluster and a medium. Each server in the server cluster stores the same random number table and mapping table, the random number table comprises a random number seed corresponding to each month, and the mapping table comprises index values corresponding to a plurality of activity identifiers. The method comprises the following steps: obtaining an initial random number seed corresponding to a current month from the random number table; determining a target random number seed according to the current year and the initial random number seed and calculating a random parameter, the value range of the random parameter being the same as the range of the index values; taking an index value with the same value as the random parameter as a target index value and obtaining a target activity identifier corresponding to the target index value from the mapping table; and generating a game activity based on the target activity identifier and taking the game activity as a monthly regular activity of the current month. Therefore, the freshness of the game activity for players is improved, and the operation process of configuring and maintaining the monthly regular activity is simplified.

This invention relates to a key distribution and communication adaptation method and related equipment for walkie-talkies, comprising the following steps: extracting a terminal identity feature code from the walkie-talkie terminal device identification information, and generating a key generation factor by XORing it with a preset random number seed; using this factor to distribute a pre-stored stub key to obtain a session key ciphertext and sending it to the target terminal; the target terminal decrypting the ciphertext using a locally stored distributed key to obtain the session key plaintext, and verifying its legitimacy through a message authentication code; if the verification is successful and there is a voice communication request to be initiated, then encrypting each frame of voice data frame by frame based on the session key plaintext to generate encrypted voice data frames, and encapsulating them into communication data packets carrying a key version identifier for transmission, thus solving the technical problem of achieving end-to-end encrypted voice transmission in half-duplex mode and ensuring that sensitive information is not illegally eavesdropped on.