343 results about "Hash function" patented technology

The systems and methods disclosed herein orchestrate task execution among autonomous (or semi-autonomous) AI agentic models (“agents”) responsive to a received query by using a hierarchical semantic fingerprinting framework to generate semantic-aware fingerprints for the query and agents. Queries and descriptions of agent capabilities are processed by a series of hierarchical levels using locality-sensitive hash (LSH) functions, where subsequent layers encode more complex semantic information and generate longer hash values. The hash values are aggregated into a semantic fingerprint. A bloom filter cascade uses a series of increasingly accurate hierarchical bloom filters to reject agent fingerprints that differ from the query fingerprint. The remaining agent fingerprints are compared bitwise to the query fingerprint, and those closest to the query fingerprint are selected to generate a routing path for the query. Responses from the selected agents are aggregated into an output that is responsive to the input.

The invention discloses a secondary power modulus-based post-error-correction-free quantum lattice signature method, which comprises a counter, and comprises the following steps of: S1, sampling a random seed, and expanding the seed through a hash function to obtain a byte stream element I, a byte stream element II and a byte stream element III; s2, calculating and generating a public key and a private key based on the throttling element I, the byte stream element II and the byte stream element III; s3, assigning initial values to the counter and the signature, and calculating and generating a hash value I and a hash value II based on the private key and the signature message; s4, performing signature loop calculation based on the hash value I, the hash value II, the private key and the initial value of the counter to generate a legal signature final value, and returning the legal signature final value; s5, a signature verification variable is generated through calculation based on the public key and the signature final value, if the signature verification variable meets a verification condition, signature verification is passed, otherwise verification is not passed, the post-quantum lattice signature calculation efficiency, bandwidth optimization and stability are greatly improved, and a more efficient solution is provided for practical application.

The invention discloses a big data measurement asset supply and demand matching and inventory optimization method, and relates to the technical field of big data processing and supply chain management. The method comprises the following steps: segmenting supply chain asset data through a hash function according to multi-dimensional attributes to generate a data fragment set, and constructing a global index tree according to the data fragment set; and monitoring the load state of the leaf nodes of the global index tree in real time, and migrating and verifying data during unbalance. And querying the global index tree, positioning fragment data associated with the query request from the uniformly distributed leaf nodes, generating a preliminary matching asset set, calculating the matching degree of each asset and the query request, and generating a resource allocation result. And updating the global index tree, and generating the latest data view representation. And adjusting the attribute weight coefficient of each dimension in the hash function, and generating optimized storage layout configuration. Irrelevant data are filtered through a neighbor algorithm, and a final matching result set is generated. Balanced storage, efficient query and accurate matching of asset data are realized, and the overall response speed and the resource utilization rate are improved.

Provided in the present invention are a method and system for ensuring the trustworthiness and security of cyberspace. The method comprises: step S1, on the basis of a multi-identifier network, implementing multi-identifier addressing having authentication and packet signing embedded therein; step S2, defining digital customs, a digital passport and a digital visa based on the multi-identifier network; step S3, on the basis of time data, a digital visa key and a hash function, performing calculation to obtain the digital visa based on the multi-identifier network; step S4, on the basis of the hash value of the digital visa and a cross-states passport key, performing calculation to obtain the digital passport based on the multi-identifier network; step S5, implementing the digital customs by means of a multi-identifier network router, and using and maintaining an exit border table by means of the digital customs; and step S6, by means of the digital customs, using an arrival border table to verify the digital passport, and updating the arrival border table. The present invention can effectively guarantee the trustworthiness and security of cyberspace, and enable the traceability of blockchain logs, thereby providing a better foundation for ensuring the order, rule of law and peace of cyberspace.

Aspects of this disclosure provide a method including establishing a wireless communications link between an access point and a wireless station. Establishing the wireless communications link comprises assigning the wireless station to an Enhanced Data Privacy (EDP) group that is associated with timing information for rotating wireless frame anonymization parameters at epoch transitions. The method further includes determining a privacy-enhanced association identifier (peAID) having a size greater than a size of an AID field that is used in one or more types of wireless frames on the wireless communications link. The method further includes generating an over- the-air AID (otaAID) to be used in the one or more types of wireless frames. Generating the otaAID comprises applying at least the peAID to a hash function. The method further includes transmitting, from the access point, a first wireless frame having the otaAID in the AID field.

The invention discloses a dynamic multimedia data hash retrieval method and system based on extensible increment, and relates to the technical field of multimedia data retrieval. The method comprises the following steps: acquiring dynamic multimedia data to be retrieved; a pre-trained Hash retrieval large model is constructed, the Hash retrieval large model is trained by taking a bit extensible Hash center as global supervision information and taking tag cosine similarity as local supervision information, and specifically, generalization feature representation of new multimedia data maintaining new and old class discrimination is obtained through forward propagation; constructing a linear mapping relationship between the generalization feature representation and the hash code, and introducing an auxiliary variable to continuously update the hash function without playback; and utilizing the trained Hash retrieval large model to generate a query Hash code for the dynamic multimedia data to be retrieved, and utilizing the query Hash code to retrieve. According to the method, low memory occupation, high updating efficiency and non-forgetting retrieval of the dynamic multimedia data stream in the open environment are realized.

Systems and methods are provided for verifying identities of users. One example computer-implemented method includes requesting a unique ID for a user, from a software development kit (SDK) in a mobile device, and issuing the unique ID for the user. The method also includes generating, by the SDK, a public / private key pair specific to the unique ID, prompting the user to capture an image of a government issued document, and capturing the image of the document. The method further includes validating, by the mobile device, the identity of the user based on the image of the document and, based on the validation, (i) converting the image via a one-way hash function, (ii) signing the hashed image with the private key of the public / private key pair, and (iii) transmitting the signed hashed image, the unique ID, and the public key of the public / private key pair to an identification provider.

The invention relates to the technical field of block chains, and provides a cross-domain authentication method and device, electronic equipment and a storage medium, and the method comprises the steps: receiving an access credential sent by a vehicle when the vehicle is in a coverage range of a road side unit; the access credential comprises a hash value of the identity credential; based on the hash value in the access credential, querying the distributed account book recording the hash value of the identity credential to obtain a query result; and verifying the authentication validity of the vehicle based on the query result. According to the method, multiple road side unit nodes form an alliance chain and jointly maintain a distributed account book of an identity certificate hash value, a decentralized unified trust foundation is constructed, and trusted transmission and verification of vehicle identities are achieved; by using the access credential only comprising the hash value, the storage overhead and the authentication delay on the chain are remarkably reduced, the single-point fault problem of the traditional public key infrastructure is avoided, the long-term identity information of the vehicle is effectively protected by means of the unidirectivity of the hash function, and privacy leakage is prevented.

The invention provides an NFC information interaction and management method for an intelligent signboard of power equipment, and the method comprises the steps: extracting field problem feedback data from an obtained synchronous data flow, carrying out the mode recognition and priority sorting of the feedback data through a support vector machine algorithm, and determining a high-priority problem list; according to the determined high-priority problem list, a deep neural network algorithm is adopted to carry out prediction modeling on list data, the future equipment fault trend is judged, and a predictive maintenance suggestion data set is obtained; the obtained predictive maintenance suggestion data set is fused with the real-time interaction content, a closed-loop feedback instruction is generated in a background system, and guidance information update for field operation is obtained; and extracting verification parameters from the obtained guidance information update, performing integrity verification on the parameters through a hash function, judging the reliability of the updated data, and obtaining the finally confirmed closed-loop management information.

Technology is described for an object cache layer for a rules engine. The object cache layer may store derived objects. The object cache layer may take advantage of machine learning for incoming objects that have variable attributes. A trainable hash function may use a machine learning model to predict the incoming event schema and signature of derived objects from the incoming objects or queries. The trainable hash function may determine an incoming event schema and signature of a derived object using the machine learning model and a set of attributes of an incoming object. A cache manager of the object cache layer may use a hash value determined by the trainable hash function using the signature of the incoming object to determine whether to access the derived object in the cache. The trainable hash function may be trained at runtime using training signatures from the rules engine on cache misses.

The embodiment of the invention provides a data consistency verification method and device, equipment, a storage medium and a program product, and relates to the field of big data. The method comprises the following steps of: dividing a plurality of data tables which need to be verified and are positioned in different databases into a plurality of groups of data blocks; wherein the data blocks in one group of data blocks are respectively located in different data tables, and the dimensions are the same during division; for each data block, compressing the data block to obtain a compressed data block; calculating fingerprint data of the compressed data block based on a hash function; and based on a comparison result of the fingerprint data of each group of compressed data blocks in the plurality of data tables, generating a consistency verification result of the plurality of data tables. According to the method, the mass data in the data table is divided into a plurality of data blocks and the data blocks are compressed respectively, so that the data transmission quantity and the processing quantity in the subsequent verification process are effectively reduced, the occupied network and hardware resources are reduced, the time consumption of data consistency verification is further reduced, and the verification efficiency is improved.

The invention belongs to the technical field of key agreement, and particularly relates to a bidirectional authentication and session key agreement method and system for an NFC passive lock, and the method comprises the following steps: S1, a mobile phone side generates a first temporary private key and a first random number, and carries out the first temporary private key agreement on the basis of an identity label of the NFC passive lock, the first random number, and a first base point G and a second base point P of an elliptic curve; and calculating a first temporary public key by using the first hash function, and sending the first temporary public key and the first random number to the NFC passive lock. According to the invention, on the premise that the hardware storage burden of the NFC passive lock is not increased, safe bidirectional authentication and key negotiation are realized, the capability of resisting physical attacks and network attacks is improved, and the confidentiality and integrity of communication are guaranteed.

The invention relates to the technical field of quantum security computing communication, and discloses a cluster state-based third-party quantum summation method with a bidirectional identity authentication mechanism, which comprises the following steps of: firstly, realizing bidirectional identity authentication between a participant and a third party in a quantum channel by pre-sharing secret identity information and a hash function in combination with a decoy photon technology; and impersonation and man-in-the-middle attack are fundamentally eradicated. And after the authentication is passed, the participant randomly executes measurement or reflection operation on the particle to which the participant belongs, so that an encrypted private key can be generated under the assistance of a third party, and external eavesdropping and internal participant attack can be jointly detected according to an operation combination to form multi-level security protection. Finally, the third party can only calculate the bitwise modular binary sum of the private bit string of each party, and cannot obtain any single input value. According to the method, authentication and calculation are organically fused, unconditional security is guaranteed, and meanwhile, the quantum capability requirements of participants are remarkably reduced.

Cryptographic method for verifying data method, implemented by at least one apparatus, for comparing a first dataset and a second dataset, in particular with a view to determining whether these two datasets are identical, this method not requiring the presence of these two datasets in the apparatus, and comprising the following steps: a) mixing a number, called the mixer number, with the first dataset, using a mixing function in order to obtain mixed data, b) hashing the mixed data using a hash function, and c) comparing the hash thus obtained in step b) with a third dataset assumed to be the hash of the second dataset mixed with the same mixer number as that used in step a) and with the same mixing function. The method can be used for broadcasts and transmissions using digital signatures.

Aspects of this disclosure provide a method including establishing a wireless communications link between an access point and a wireless station. Establishing the wireless communications link comprises assigning the wireless station to an Enhanced Data Privacy (EDP) group that is associated with timing information for rotating wireless frame anonymization parameters at epoch transitions. The method further includes determining a privacy-enhanced association identifier (peAID) having a size greater than a size of an AID field that is used in one or more types of wireless frames on the wireless communications link. The method further includes generating an over-the-air AID (otaAID) to be used in the one or more types of wireless frames. Generating the otaAID comprises applying at least the peAID to a hash function. The method further includes transmitting, from the access point, a first wireless frame having the otaAID in the AID field.

Evaluating the presence of training data in generated content by defining a first signature of a portion of the generated content by loading the generated content into memory registers, dividing the generated content into tokens, designating a sequential group of tokens as a signature shingle, and defining the first signature as a hash function value for the signature shingle. The evaluation also including matching the first signature to a training data signature in a training data signature database, updating a database record for the generated content to include the training data associated with the training data signature, and providing an output comprising data associated with the training data signature over a network.

The invention relates to a message authentication code generation method, a message authentication code verification method and a computer readable storage medium. The generation method comprises the steps of generating a public parameter, generating a key by using the public parameter, and finally generating an authentication code of a to-be-transmitted message according to the key. The method specifically comprises the following steps: randomly selecting a positive integer R from {1, 2,..., p-1}; randomly selecting any bit string E from the bit string set N; randomly generating a bit string V with the length of v, and inputting the message to be transmitted and the bit string V into the hash function hash to obtain a bit string A; calculating to obtain B; and respectively converting R and B into bit strings Rb and Bb, connecting Rb, Bb and V to form a bit string, converting the bit string into a decimal number (I) 10, and inputting (I) 10 into a permutation function per to obtain a message authentication code. The method can resist quantum computer attacks and has higher safety and reliability.

To provide an information processing method, an information processing program, an information processing device, and an information processing system capable of improving user experience or user convenience for connection to a communication network.SOLUTION: A method for processing information is executed by a processor of a device and includes a step (S2) of generating a public key of the device based on a private key of the device, a step (S3) of generating a hash value based on the public key and a predetermined hash function, and a step (S6) of determining an IP address of the device based on the hash value.SELECTED DRAWING: Figure 1

The invention relates to the technical field of computers, in particular to a data storage method and device, equipment, a medium and a product. The method comprises the steps of obtaining a memory field corresponding to to-be-stored data according to a hash function; a first target address and a second target address are obtained from the memory field, the first target address corresponds to the first induction array, and the second target address corresponds to the second induction array; when the first induction array has the vacancy, storing the memory field into a first target bit of the first induction array; when the first induction array does not have the vacancy and the second induction array has the vacancy, storing the memory field into a second target bit of the second induction array; and when neither the first induction array nor the second induction array has the vacancy, storing the memory field into a third target bit of the first induction array or the second induction array. The memory field, the first target address and the second target address positioning mechanism are introduced, only the memory field with the fixed length is stored, the space utilization rate is remarkably improved, and higher response query efficiency is achieved.

The invention provides a data information security encryption method and system based on a hash function, and belongs to the technical field of data encryption, and the method specifically comprises the following steps: on the basis of encryption optimization server data, combining with delay influence conditions of different servers in an encryption optimization time period; the method comprises the following steps: determining an update identification processing strategy of a potential optimization target of an encryption optimization server, determining the potential optimization target based on the update identification processing strategy, and determining an update management method of the potential optimization target on the basis of association degrees of the potential optimization target and the encryption optimization server in different interaction periods. And the management and control reliability of data security is improved.

This application discloses a training method, apparatus, electronic device, and storage medium for a prediction model. The method includes: acquiring raw time-series data; preprocessing the raw time-series data to obtain exogenous variables, which represent the extension of periodic data corresponding to the raw time-series data to a first preset time period; inputting the raw time-series data and exogenous variables into a preset model, and processing the raw time-series data based on the exogenous variables and a locality-sensitive hash function to obtain predicted time-series data corresponding to the first preset time period; training the preset model based on the predicted time-series data and the preset time-series data until the preset model meets preset training conditions, thereby obtaining a trained prediction model. According to the embodiments of this application, the problem of low accuracy in data prediction can be effectively solved.

The invention discloses an anti-quantum collaborative signature method based on a hash function. The method comprises the following steps: acquiring a message M to be signed and a private key and a public key of a signer A; hash operation is carried out on the to-be-signed message M, a message Hash value is obtained, and H is a preset Hash function; the message hash value m is divided into a high half byte and a low half byte according to bytes to form a first group and a second group, and the first group and the second group are satisfied, and are the number of key elements; generating, by the signer A, partial signature data based on the first packet and a private key, generating, by the signer B, collaborative signature data based on the second packet and the partial signature data, and outputting the collaborative signature data. A traditional quantum attack risk based on a public key system can be avoided, and the reliability of the collaborative signature in privacy and safety is ensured.

The application is suitable for the technical field of safety hidden danger monitoring, and particularly relates to a power safety hidden danger real-time monitoring method and system based on the Internet of Things, which comprises the following steps: identifying running equipment in a power system, obtaining equipment numbers of the running equipment, configuring parameter indexes of the running equipment, delimiting fluctuation ranges of the parameter indexes, wherein the parameter indexes at least include rotation speed, temperature and voltage, and calculating importance values of each parameter index; creating a number block corresponding to each parameter index; and driving the running equipment for point inspection through a preset Internet of Things device by selecting a relationship hash function. The application can drive the running equipment for point inspection by selecting a relationship hash function, so as to timely identify early signs of failure, prevent chain reactions, greatly improve the stability of the power system, combine general inspection and point inspection by constructing a monitoring chain, greatly reduce the safety risk of the power system, optimize resource allocation, and further improve the monitoring efficiency of the power system.

The application relates to a cross-chain-oriented hash function library updating system and relates to the field of blockchains, and comprises a hash function storage contract, a hash function management contract and a local hash function library, wherein the hash function storage contract and the hash function management contract are located on a blockchain; each hash function storage contract stores a contract management permission account, a hash function name and a hash function code; the hash function management contract comprises an account list of management permissions, the account list of management permissions stores a plurality of hash function names and contract management permission accounts corresponding to the hash function names; and the local hash function library comprises an updating interface; the updating interface judges whether a current account is a contract management permission account through the hash function management contract, and when the current account is a contract management permission account of a hash function to be updated, the hash function storage contract of the hash function to be updated and the local hash function library are updated. The application improves the availability and security of hash function updating.

An example network interface controller (NIC) includes: first resources configured to supply first traffic; second resources configured to supply second traffic; a load balancer, coupled to the first and second resources, configured to balance the first traffic and the second traffic between first and second port circuits of a link aggregation group (LAG) using a hash function; and remote direct memory access (RDMA) logic configured to, using the hash function, divide work requests into a first set of work requests for first packets that hash to the first port circuit and a second set of work requests for second packets that hash to the second port circuit, the RDMA logic configured to supply the first set of work requests to the first resources and the second set of work requests to the second resources.

The application discloses a method, system and device for information searching based on a multiple chameleon hash function, and belongs to the technical field of blockchains. The technical problem to be solved is how to make a trapdoor be independently held by multiple participants and improve the security and credibility of the chameleon hash algorithm. The method comprises the following steps: multiple participants as trapdoor co-owners hold system parameters; each participant generates a key pair share and broadcasts a public key share in the key pair share; an aggregated public key is calculated based on the public key shares of all participants; chameleon hash calculation is performed to obtain a chameleon hash value as a target hash value; the multiple participants cooperate to perform collision searching through multiple rounds of concurrent communication to obtain a new message and a pair of new chameleon random numbers corresponding to the new message, and the chameleon hash value of the new message is the same as the target hash value.

The invention discloses a cross-domain data security sharing method and system, and relates to the technical field of information transmission security, the method ensures the legality of an access request through double verification of user identities and generation of a unique cross-domain request identifier RID, then divides an original data set into a plurality of data segments, adds timestamp information and watermarks, and finally obtains a plurality of data segments; a unique identification value is generated through a hash function, and data fragments are encrypted, so that the uniqueness and unforgeability of each data fragment are ensured; in the data transmission process, the target domain system performs consistency verification and integrity verification on the received encrypted fragment to ensure that the data is not tampered and lost; and constructing a comprehensive credibility index Rtr in combination with trajectory consistency and fragment integrity, evaluating the credibility of the data sharing process, and making a decision according to an evaluation result to ensure the security of data transmission. According to the method, data loss and tampering are prevented, and the sharing strategy is adjusted according to actual conditions.

The application relates to a data sharing method and device of a vehicle, electronic equipment and a storage medium, wherein the method comprises the following steps: in response to a data sharing instruction, a preset sharing random number of the vehicle is acquired, and a first random number of the vehicle is generated; a preset sharing random number is calculated by using a hash function to obtain a temporary key, and the first random number is encrypted by using the temporary key to obtain a first encrypted random number; a corresponding sharing ciphertext is generated by combining the first encrypted random number, a current time, a data integrity check value of the vehicle and a registration identification mark of the vehicle, and the sharing ciphertext is sent to a sharing end; after the sharing ciphertext is verified at the sharing end, an encrypted session generated by a second random number of the sharing end is received; the encrypted session is verified, and in the case that the encrypted session is verified to be qualified, the to-be-transmitted data of the vehicle is shared to the sharing end. Therefore, the technical problem that in the related art, it is difficult to avoid illegal means, the user's privacy information is called without user authorization, and there is a great security risk is solved.

The invention discloses a privacy set intersection method and system supporting load interval screening, and the method comprises the steps: determining a Bloom filter and a hash function, generating a homomorphic encryption key pair by a first participant, setting a threshold parameter and a load interval by a second participant, and generating a symmetric encryption key, a master secret and a random number; the first participant obtains a ciphertext and sends the ciphertext to the second participant, the second participant generates a homomorphic ciphertext, and the second participant encrypts elements, a load value and a load interval boundary value of the homomorphic ciphertext and sends the elements, the load value and the load interval boundary value to the first participant together in combination with a threshold parameter; the master secret is recovered through threshold judgment; the first participant decrypts and screens out the intersection element ciphertext meeting the load interval, and sends the intersection element ciphertext to the second participant; and outputting the intersection element meeting the load interval condition through decryption. According to the invention, intersection calculation of load values in a specific range is realized.

The invention discloses a cross trusted authority identity authentication and message publishing method based on redactable blockchain, adopts a redactable blockchain based on chameleon hash function to replace the traditional blockchain, and the trusted authority can use the private key of the chameleon hash function to edit the block content on the blockchain, so that only legal, valid and timely information is stored on the blockchain. In addition, the trusted authority can also edit the vehicle authentication information stored on the blockchain, easily updating the vehicle information credentials or revoking the information credentials of illegal vehicles. In the process of authentication and key negotiation, cryptography tools are used to ensure the confidentiality, integrity and availability of messages, and can effectively resist various known attacks.