22 results about "Trusted timestamping" patented technology

The invention discloses an electronic contract signing verification method based on a trusted timestamp, and relates to the technical field of block chains and electronic contract signing, and the method comprises the steps: receiving a to-be-verified electronic contract signing file, and extracting a timestamp data block and signature data from the electronic contract signing file; sending the timestamp data block to a trusted timestamp service mechanism for verification, obtaining an evidence storage record corresponding to the electronic contract signing file from a block chain node, and extracting block chain evidence storage time and a contract hash value; and judging the signing time information of the timestamp data block and the blockchain evidence storage time of the evidence storage record, and when the time difference between the signing time information and the blockchain evidence storage time is smaller than a preset threshold and the contract hash value is matched with the contract file feature value, outputting a verification passing identifier. According to the invention, a dual verification system of the trusted timestamp service mechanism and the block chain distributed account book is constructed, so that the technical problem of insufficient verification reliability of a traditional single time source is effectively solved.

The invention relates to the technical field of computer processing, and provides an electronic signature generation and verification method which comprises the following steps: acquiring an initial file; performing anti-counterfeiting operation based on the initial file to obtain first signature information; embedding the first signature information into the initial file to obtain a first intermediate file; performing signature operation on the first intermediate file based on a digital certificate to obtain a first signature value; embedding the first signature value into the first intermediate file as second signature information to obtain a second intermediate file; performing signature operation on the second intermediate file based on credible timestamp information to obtain a second signature value; and embedding the second signature value into the second intermediate file as third signature information to obtain a target file, according to the embodiment of the invention, through a multi-level security mechanism, the legality and anti-counterfeiting capability of the file signature can be effectively ensured, and the file is prevented from being forged, tampered, copied or illegally used.

The application relates to a code scanning authentication method, a system and related equipment. The method adopts scanning a two-dimensional code displayed by a client to obtain a trusted timestamp and a dynamic address; based on the trusted timestamp, a first signature is generated by using a first signature private key of a mobile terminal, the first signature is sent to a co-signing server to trigger the co-signing server to use a second signature private key stored by the co-signing server to perform secondary signing on the first signature; according to the dynamic address, a final signature, a signature certificate of the mobile terminal and the trusted timestamp are submitted to a corresponding authentication server; after authentication succeeds, in response to a login state query request, the client obtains user identity information and automatically completes login, the problems that in the prior art, mobile terminal key single-point storage risk is high, and after a private key is leaked, the private key is easily abused to cause authentication credentials to be impersonated are solved, the technical effect that authentication credentials impersonation risk caused by single-end private key leakage is avoided, and the security and reliability of code scanning authentication are improved.

The application provides a satellite communication-based trusted timestamp service system, method, device and storage medium. A satellite NTP server is used for receiving timing time of a satellite signal, starting an NTP service and providing network timing service. A terminal trusted timestamp server is used for starting an NTP synchronization service and acquiring timing time. The terminal trusted timestamp server is used for providing a trusted timestamp signing service to at least one terminal device in the same local area network and generating a trusted timestamp credential through a trusted timestamp interface. The stability and service efficiency of the trusted timestamp service system are improved based on satellite communication. The problem that trusted timestamp service cannot be obtained in places without internet access or with poor network environment when a trusted timestamp service center provides services for external programs or operators through the internet is solved.

The application discloses a system, a verification system and a method for generating software code copyright authentication credentials. The system comprises an AI semantic analysis module for analyzing target code using an AI code large model to generate a high-dimensional semantic embedding vector; a semantic fingerprint generation module for hashing the vector to obtain a binary semantic fingerprint; an extraction module for extracting a plurality of structural features from an abstract syntax tree; a structural fingerprint generation module for hashing the plurality of structural features to obtain a structural fingerprint; a core package construction module for constructing a code DNA core package; a signature module for encrypting the core package hash value using a private key; a trusted timestamp acquisition module for obtaining a timestamp authentication hash value by overall hashing, and obtaining a trusted timestamp certificate therefrom; and the code DNA core package, the developer signature and the trusted timestamp certificate jointly serving as the copyright authentication credentials. The application can improve the accuracy of code plagiarism detection and provide reliable copyright protection.

The present invention relates to the technical field of security protection. Provided are a digital calibration certificate generation and verification method and system based on a micro-service architecture. The system comprises: a user subsystem, which is used for acquiring digital calibration certificate content information, and transmitting a digital calibration certificate generation and verification result to a user; a service subsystem, which is used for providing an access service, and acquiring calibration service data on the basis of the digital calibration certificate content information; a processing subsystem, which is used for generating a digital calibration certificate on the basis of the digital calibration certificate content information and the calibration service data, and verifying the digital calibration certificate to obtain the digital calibration certificate generation and verification result; a digital security subsystem, which is used for performing authentication on the user subsystem by means of the service subsystem, and providing a digital signature and a trusted timestamp for the processing subsystem; and a storage subsystem, which is used for storing information and data in a processing process, and providing corresponding information and data for the processing subsystem. The present invention solves the problem of it being difficult for a digital calibration certificate to meet a standard requirement.

The invention provides an intelligent management method and system for extraterrestrial samples, and can be applied to the technical field of artificial intelligence. The technical problems that the approval process of a previous extraterrestrial sample management mode is tedious, sample state updating is lagged, and the safety and the intelligent level are low are solved. The method comprises the following steps: screening out selectable foreign samples from a sample list by using a natural language understanding model of a model analysis layer, and carrying out credit pre-examination according to a borrowing application form to obtain a credit pre-examination report; the borrowing application form is subjected to flow batch auditing, in response to the fact that the flow batch auditing is passed, an electronic borrowing protocol with a credible timestamp is generated through the safety control layer based on an encryption mechanism, and under the condition that the electronic borrowing protocol is confirmed through digital signature, an optional foreign sample specified in the borrowing application form is borrowed according to a borrowing scheme. The efficiency of extraterrestrial sample management is improved, the timeliness of sample states is improved, and the safety and intelligent level of extraterrestrial sample management are improved.

A digital calibration certificate (DCC) generation and verification method and system based on microservices architecture includes: a user subsystem configured to acquire DCC content information and transmit a DCC generation and verification result to a user; a service subsystem configured to provide an access service and acquire calibration business data based on the DCC content information; a processing subsystem configured to generate a DCC based on the DCC content information and the calibration business data and verify the DCC, and obtain the DCC generation and verification result; a digital security subsystem configured to authenticate the user subsystem through the service subsystem and provide a digital signature and a trusted timestamp to the processing subsystem; and a storage subsystem configured to store information and data during processing and provide corresponding information and data to the processing subsystem.

The invention relates to a code scanning authentication method, a code scanning authentication system and related equipment. The method comprises the following steps: scanning a two-dimensional code displayed by a client, and analyzing to obtain a trusted timestamp and a dynamic address; based on the trusted timestamp, generating a first signature by using a first signature private key of the mobile terminal, and sending the first signature to the co-signature server to trigger the co-signature server to perform secondary signature on the first signature by using a second signature private key stored in the co-signature server; submitting the final signature, a signature certificate of the mobile terminal and a credible timestamp to a corresponding authentication server according to the dynamic address; after the authentication is successful, the login state query request is responded, so that the client obtains the user identity information and automatically completes login, and the problems that the mobile terminal key single-point storage risk is high, and an authentication certificate is pretended due to the fact that a private key is easy to misuse after being leaked in the existing scheme are solved; the technical effects that the risk that the authentication certificate is pretended due to leakage of the single-end private key is avoided, and the security and reliability of code scanning authentication are improved are achieved.

The application discloses a kind of based on distributed storage technology's data storage evidence security processing method and system, its method includes: to the original electronic data of being stored evidence carries out hash operation, obtains first level evidence fingerprint;For first level evidence fingerprint issues trusted timestamp, first level evidence fingerprint, the content identifier of original data is combined with trusted timestamp and carries out hash operation as data packet and generates final evidence fingerprint;Final evidence fingerprint is broadcast to block chain network to generate evidence record;According to electronic evidence certificate, final evidence fingerprint is obtained from block chain network, and secondary hash calculation is re-executed to the original electronic data provided by user, and verification fingerprint is obtained, and verification conclusion of data integrity and evidence time credibility is determined according to the consistency of verification fingerprint and final evidence fingerprint.Reduces the cost of evidence, guarantees the high reliability of evidence timestamp, can be independently verified on the public block chain, effectively protects commercial secret and personal privacy.

This application discloses a trusted timestamp generation method, apparatus, device, storage medium, and product, relating to the field of data processing technology. The method includes: obtaining the response times of each core node in the timestamp generation system to timestamp requests; determining target core nodes based on the response times of each core node; determining target associated nodes based on the fitting degree between nodes; and generating a trusted timestamp based on the consensus results of the target associated nodes when a timestamp verification consensus request is detected from a target core node. Through this method, after determining each core node in the timestamp generation system, a target core node is further determined. When the target core node initiates a timestamp verification consensus request, only the target associated nodes participate in the consensus. This improves timestamp consensus efficiency without sacrificing accuracy, and the decentralized consensus method prevents timestamp tampering, thereby effectively improving the efficiency, accuracy, and trustworthiness of timestamp generation.

A method includes receiving an event, the event associated with a digital signature in a first time-based message comprising a first trusted time stamp token generated using a first hash of digitally signed content from a trusted timing authority; generating a first block on a distributed ledger; generating a second hash of the first trusted time stamp token; receiving a second trusted time stamp token from the trusted timing authority in response to transmitting the second hash to the trusted timing authority; and generating a second block on the distributed ledger; wherein verification of data integrity of the digitally signed content is provided via the first hash of the digitally signed content and second hash of the first trusted time stamp token and via the hash of the first block and a hash of the second block.

The invention discloses a trusted timestamp generation method and device, equipment, a storage medium and a product, and relates to the technical field of data processing, and the method comprises the steps: obtaining the time of each core node in a timestamp generation system for responding to a timestamp request; determining a target core node according to the time when each core node responds to the timestamp request; determining a target association node according to the fitting degree between the nodes; when it is detected that the target core node initiates a timestamp verification consensus request, generating a trusted timestamp according to a consensus result of the target associated node; through the mode, after each core node in the time generation system is determined, the target core node is further determined, and when the target core node initiates the timestamp verification consensus request, only the target associated node participates in consensus, so that the timestamp consensus efficiency is improved on the premise of not losing the accuracy, and the time generation efficiency is improved. And the timestamp can be prevented from being tampered through a decentralized consensus mode, so that the efficiency, the accuracy and the credibility of generating the timestamp can be effectively improved.

The invention provides a layered Byzantine consensus method for transaction security. The method comprises the following steps: constructing a layered architecture comprising an execution layer and a verification layer; a user submits a transaction application to the execution layer, and the execution layer performs trusted timestamp generation, encrypted transaction sorting and secure transaction execution operation after receiving the transaction application; and sending the related information of the transaction result of the execution layer to the verification layer for batch certification verification, global consensus confirmation and state termination operation. According to the method, various transaction attacks such as front transaction attacks and sorting tampering attacks can be successfully resisted, and the fair sorting accuracy reaches 100%; the execution layer realizes physical time binding of transaction sorting by means of TEE, the tampering possibility is eliminated, the verification layer verifies zero-knowledge proof in batches by means of BFT consensus, and the global terminality is ensured. The delay and the communication overhead are lower; and the transaction content is hidden and encrypted in the transaction process, so that malicious nodes are prevented from acquiring information in advance.

The present invention discloses a method for verifying electronic contract signatures based on a trusted timestamp, which relates to the technical field of blockchain and electronic contract signatures. The method comprises receiving an electronic contract signature document to be verified, extracting a timestamp data block and signature data from the electronic contract signature document; sending the timestamp data block to a trusted timestamp service agency for verification, obtaining a storage record corresponding to the electronic contract signature document from a blockchain node, extracting the blockchain storage time and the contract hash value; determining the signing time information of the timestamp data block and the blockchain storage time of the storage record, and outputting a verification pass flag when the time difference between the two is less than a preset threshold and the contract hash value matches the contract document characteristic value. The present invention effectively solves the technical problem of insufficient reliability of traditional single time source verification by constructing a dual verification system of a trusted timestamp service agency and a blockchain distributed ledger.

Timestamps are used to prevent data tampering. A trusted data generator generates a concatenated data object including a data object and metadata, which includes a location indication, a timestamp, and, depending on the type of encryption, an integrity value. The trusted timestamp generator encrypts the concatenated data object, stores the encrypted concatenated data object (e.g., in untrusted storage) in accordance with a location indicated by the location indication, and protects the timestamp in trusted storage (e.g., by protecting at least the root timestamp). A trusted data validator extracts the data object and metadata from the decrypted concatenated data object and validates the data object by comparing the storage location to the extracted location indication, the protected timestamp to the extracted timestamp, and a calculated integrity value to the extracted integrity value. Timestamps may be validated without calculations and with tolerances, supporting performance customization / security optimization.

Timestamps are used to prevent data tampering. A trusted data generator generates a concatenated data object including a data object and metadata, which includes a location indication, a timestamp, and, depending on the type of encryption, an integrity value. The trusted timestamp generator encrypts the concatenated data object, stores the encrypted concatenated data object (e.g., in untrusted storage) in accordance with a location indicated by the location indication, and protects the timestamp in trusted storage (e.g., by protecting at least the root timestamp). A trusted data validator extracts the data object and metadata from the decrypted concatenated data object and validates the data object by comparing the storage location to the extracted location indication, the protected timestamp to the extracted timestamp, and a calculated integrity value to the extracted integrity value. Timestamps may be validated without calculations and with tolerances, supporting performance customization / security optimization.

Embodiments of the present specification provide a data verification method and device, wherein the data verification method comprises: obtaining to-be-verified data, a generation time of the to-be-verified data and a preset data table; performing data matching on the to-be-verified data by using the preset data table, and if the data matching is successful, determining that the existence verification of the to-be-verified data is successful; obtaining a target trusted timestamp from a time ledger, and if it is determined by using the target trusted timestamp that the generation time meets a preset trusted condition, determining that the timeliness of the to-be-verified data is successful. The present scheme can realize more reliable data verification.

This application provides a method and system for generating quantum-resistant timestamps using environmental electromagnetic noise, relating to the field of timestamp generation technology. The method generates a unique environmental fingerprint by collecting signal characteristics of multi-band environmental electromagnetic signals. The hash information of the environmental fingerprint is then bound together with the document hash and the precise UTC generation time using a quantum-resistant signature algorithm to generate a timestamp token. A data storage package is then constructed based on the timestamp token and uploaded to a distributed file storage system. During verification, the environmental fingerprint at the generation time is reconstructed by querying historical public radio data, thereby completing independent verification, improving the security of the timestamp, and effectively solving the problems of timestamp technology relying on centralized institutions and being vulnerable to quantum computing attacks. This achieves a decentralized, highly secure, and low-cost trusted timestamp service.

The present application provides a trusted timestamp service system, method and device based on satellite communication, and a storage medium. A satellite NTP server is configured to receive timing time of a satellite signal, start NTP service and provide network timing service; a terminal trusted timestamp server is configured to start NTP synchronization service and acquire timing time; and the terminal trusted timestamp server is configured to provide endorsement service of a trusted timestamp for at least one terminal device in the same local area network, and generate a trusted timestamp credential by means of a trusted timestamp interface. The stability and service efficiency of the trusted timestamp service system can be improved on the basis of satellite communication. The problem that when a trusted timestamp service center provides service for an external program or an operator by means of the Internet, trusted timestamp service cannot be obtained in places where there is no Internet access or the network environment is poor is solved.

The invention relates to the technical field of multi-laboratory inspection, in particular to a quick multi-laboratory dynamic inspection system. The method comprises the following steps: a credible timestamp encapsulation unit encapsulates inspection alarm data of each laboratory into a time chain proving data packet in combination with a lightweight time base synchronization mechanism and a time chain segment proving mechanism; the multi-source alarm aggregation de-duplication unit is used for screening a time consistent candidate set, performing aggregation analysis on the time consistent candidate set, and establishing an alarm event similar graph of inspection alarm events; the dynamic priority scheduling unit analyzes a potential influence path of a main alarm event by using an alarm event propagation graph modeling mechanism, and performs dynamic priority ranking on the main alarm event to generate an inspection task queue; and the chained traceability audit verification unit performs chained traceability verification on the main alarm event and the subordinate alarm event and generates a tamper-proof audit record. According to the invention, rapid inspection of unified trusted time anchoring, alarm aggregation de-duplication and dynamic priority scheduling under multiple laboratories is realized.

The invention discloses a system for generating a software code right authentication certificate and a verification system and method, and the system comprises an AI semantic analysis module which is used for analyzing a target code through an AI code large model, and generating a high-dimensional semantic embedding vector; the semantic fingerprint generation module is used for hashing the vector to obtain a binary semantic fingerprint; the extraction module is used for extracting a plurality of structural features from the abstract syntax tree; the structure fingerprint generation module is used for hashing the plurality of structure features to obtain a structure fingerprint; the core package construction module is used for constructing a code DNA core package; the signature module is used for encrypting the hash value of the core packet by using a private key; the trusted timestamp acquisition module is used for carrying out overall hash to obtain a timestamp authentication hash value, and obtaining a trusted timestamp certificate according to the timestamp authentication hash value; and the code DNA core package, the developer signature and the trusted timestamp certificate jointly serve as a right authentication certificate. According to the method, the accuracy of code plagiarism detection can be improved, and reliable copyright protection is provided.