74 results about "MD5" patented technology

The invention particularly relates to a batch data updating method based on Redis and md5. According to the batch data updating method based on Redis and md5, data of all departments are collected into a temporary table, md5 values of the data of all the departments are generated, and the md5 values and UUIDs are stored in a Redis cache together; reading newly collected temp table data in the Redis cache in batches, comparing the temp table data with current formal table data according to departments, and finding out deleted data, newly added data and modified data according to md5 values of the data; if the data change rate is not lower than the self-defined threshold value, batch updating is conducted on the current formal table according to newly-collected temp table data in the Redis cache. According to the batch data updating method based on the Redis and the md5, rapid reading and caching of the data are achieved, the number of access times of a back-end database is remarkably reduced, the burden of a database server is effectively relieved, the response speed and the data processing efficiency of the whole system are improved, the safety and the integrity of the data are ensured, and the data updating efficiency is improved. The problem of system data loss during total collection of the database is solved.

Circuits defined by n-state switching tables with n>2 are transformed by at least one n-state inverter which may be a Finite Lab-transform (FLT) into a Finite Lab-transformed (FLTed) n-state switching devices. Computer operations defined by transformed or modified n-state switching tables are applied in cryptographic operations, including one or more message digests or hashing methods or computer one-way functions. A keyword is generated from a public keyword by at least one modified known hashing method. A known hashing method may be selected from the group consisting of SHA-1, SHA-2, SHA-3, MD5, MD6, Blake2, Blake3 and CubeHash. Internal states of known hashing methods are modified to generate unpredictable hash values.

The invention discloses a method and system for realizing incremental construction of a knowledge graph based on Md5-hash of a text block, and the method comprises the following steps: S1, constructing an initial knowledge graph based on a target document, generating community metadata, and storing the community metadata in a vector database; s2, performing block processing on a target document, performing MD5 hash calculation on each text block, generating a unique hash value, and storing the unique hash value in a historical hash library; s3, analyzing the updated document, extracting a set of all blocks of the current document according to a specified block size, recalculating a hash value of each block, comparing the hash value with a historical hash library, filtering out text blocks of which entity relationships are extracted and a graph is generated, and extracting an updated text block set; and S4, performing incremental updating of the knowledge graph according to the changed block type, wherein the incremental updating comprises timestamp marking of entity nodes, dynamic maintenance of relation links and generation of version submission records. According to the method, the maintenance cost can be reduced, the graph updating efficiency is improved, and the knowledge graph iteration speed is increased.

The invention relates to an audit data quality modeling analysis method and equipment. The method comprises the following steps: acquiring a data dictionary of a target database; constructing an audit data rule base; marking a source attribute to which the data type information belongs; identifying named entity information of the to-be-evaluated audit data element, and performing format screening, duplicate checking and key field extraction on the to-be-evaluated audit data element to obtain key information; constructing a data set; generating a quality modeling analysis result of each dimension index; calculating the weight of each dimension index; and constructing an audit data quality modeling analysis model, and calculating to obtain an audit data quality modeling analysis result. The auditing data element quality modeling analysis method is based on the auditing data quality modeling analysis model, combines the NLP technology, the OCR technology, the MD5 algorithm and the two-way long-short-term memory network, comprehensively considers the source attribute, the file structure information, the named entity information, the key information and other factors of the auditing data element, and effectively improves the auditing data element quality modeling analysis effect.

The invention provides a self-adaptive data access account checking method and device and a medium, and belongs to the technical field of computer information processing. The method comprises the following steps: selecting a source database, a source data table, a target database and a target data table for account checking, selecting primary keys of the source data table and the target data table as a data comparison basis, and setting an initial account checking frequency; reading data of the source database and the target database through Spark SQL, and performing distributed preprocessing on the data of the source database; generating an MD5 abstract for each row of data in the source data table and the target data table through an MD5 algorithm, and adding the generated MD5 abstract as a new column to the data table; searching the MD5 abstract according to the main key comparison, determining a difference data line, searching problem data according to the difference data line, and recording an account checking result; and adjusting the account checking frequency according to the current data account checking result through a Q-learning algorithm. The account checking speed and accuracy are improved, computing resources are utilized more efficiently, and hardware resource consumption is reduced.

The invention discloses a code table storage system and method based on an MD5 encryption algorithm, and relates to the technical field of code table storage.A decision matrix is constructed for each storage scheme, the decision matrixes are standardized and weighted to obtain a final matrix, and according to the maximum value and the minimum value of each storage scheme in the final matrix on each evaluation index, a code table is stored in the final matrix. Generating a positive ideal solution and a negative ideal solution, calculating the distance between each storage scheme and the positive ideal solution and the distance between each storage scheme and the negative ideal solution, generating an optimal value for each storage scheme, sorting all the storage schemes according to the optimal values, generating a salt value for a code table needing encryption processing, and splicing the salt value and code table entries to obtain a character string; hash values are calculated for the character strings through an MD5 encryption algorithm, and all the character strings after Hash value calculation are stored through an optimal scheme. The storage system can select the optimal scheme according to the real-time storage requirement without depending on a fixed storage mode, so that the storage efficiency of the code table is improved.

The invention discloses a terminal program verification method and system and a readable storage medium. According to the method, all files and paths which need to be compared and verified are added into the configuration file by adding the configuration file into the program, the terminal calculates a uniform hash value by adopting SM3 and MD5 according to the configuration file and different security levels, and when detection software reads the hash value of the terminal, the detection software can read the hash value of the terminal, and the detection software can read the hash value of the terminal. And the terminal directly returns the final hash value to the detection software, and the detection software judges whether the versions of all programs and parameter files in the current terminal are correct or not by comparing the final hash value. According to the method, the configuration file is added to the program, and verification is performed based on the hash value of the configuration file during verification, so that the accuracy of terminal program verification can be effectively improved, and meanwhile, the efficiency of terminal program verification can also be improved.

The present disclosure provides a method, device, electronic device and storage medium for checking the repeatability of seismic data, the method comprising obtaining a record file of seismic exploration auxiliary data in a target area; preprocessing the record file to read each record in the record file and converting each record into a one-dimensional array indexed by the row number of each record in the record file; calculating the hash value of each record by the MD5 information digest algorithm; inserting the array corresponding to each record into a balanced binary tree in turn to obtain duplicate records and their row numbers in the record file; wherein the key value of each node of the balanced binary tree is the hash value of the corresponding record; and outputting the duplicate records and their row numbers in the record file. The method is based on a balanced binary tree and realizes rapid duplication checking of seismic exploration auxiliary data records, with a time complexity of up to O(log n), significantly improving the SPS file processing efficiency and reducing the time cost at the construction site.

The invention discloses a cross-data-center file disaster recovery synchronization method and device, relates to the technical field of information security and can also be used in the financial field, and the method comprises the following steps: scanning a network storage directory every first preset time interval to obtain a newly generated file; the newly generated file comprises a day-end batch file and a real-time synchronization file which fails to be transmitted; searching a file MD5 of a newly generated file in a to-be-sent file table; if the search fails, querying a file object of a previous file version corresponding to a service ID in a total file table according to the service ID of the newly generated file; if the query result is query failure, determining the newly generated file as a timing synchronization file; if the query result is that the query is successful, performing incremental file segmentation according to the newly generated file and the file object to generate a timing synchronization file; and the timing synchronization file is transmitted to the temporary directory of the second data center, so that the real-time performance and accuracy of file resource synchronization are realized, the disaster recovery requirement is met, and the high availability for faults is ensured.

The invention discloses a dual encryption method based on MD5 and an asynchronous request, and relates to the technical field of data security, and the method comprises the step of establishing a dynamic salt value generation model, an asynchronous request processing model, a block chain storage verification model, an edge calculation encryption model and a dual inspection model. Through cross-domain technology fusion advantages, biological characteristics are used as a part of a dynamic salt value, double authentication of'behavior + physical characteristics' is realized, through an edge-cloud collaborative architecture hybrid calculation mode, data encryption processing efficiency is improved, hash security is enhanced through the dynamic salt value, efficiency and stability are improved through asynchronous transmission, and finally, the data encryption processing efficiency is improved through the edge-cloud collaborative architecture hybrid calculation mode. Through collaborative design of a dynamic salt value, asynchronous transmission, a block chain, edge calculation and dual verification, a multi-level and high-robustness data encryption transmission system is constructed.

The invention belongs to the field of bid invitation and bidding, and particularly relates to an emergency processing method after failure of bid opening decryption, which comprises the following steps of: S1, adding an MD5 supporting algorithm and a performance function in an electronic bid invitation and bidding system, completing a bid file which is a file A in a bid file manufacturing tool, and after manufacturing, starting an encryption program and encrypting the file A; and S2, generating an encrypted bidding file after the bidding file A is encrypted. According to the method, a mature MD5 algorithm is adopted, the technical implementation threshold is low, the reliability is high, an existing electronic bidding and tendering system is easy to transform, emergency processing after bid opening and decryption fail is supported, meanwhile, the method is clear and simple in overall logic, and the implementation is easy. The method is convenient for users of the electronic bidding system, including bidding personnel, bidding agent service personnel and platform operation and maintenance personnel, to understand and use, thereby avoiding a bid waste condition caused by decryption failure, and promoting the popularization and application of the electronic bid.

The application provides a trust degree improving method of a result set, comprising the following steps: S a1, in the process of analyzing a result set file, splicing the field contents of each piece of data, respectively calculating the MD5 of each piece of data after splicing as data HASH, correspondingly generating multiple data tables containing the data HASH, and forming a database by the multiple data tables; S a2, calculating the table name MD5 of each data table as a table name HASH, and storing the table name HASH to form a TABLE information table; S a3, calculating the file MD5 of the database as a database file HASH, and storing the database file HASH to form a DATABASE information table; and S a4, updating the data table, the TABLE information table and the DATABASE information table into the result set file. The application improves the trust degree of the result set by multiple tests on the result set.

The invention discloses a power distribution network data asset access control-oriented multi-factor identity authentication method, which comprises the following steps of: firstly, initiating a login request to a server by a power distribution network user, distributing user authority by a system, collecting user keystroke characteristics, and generating a user keystroke model; and meanwhile, generating a dynamic password, synchronizing the server and the client through an identity authentication out-of-step readjustment mechanism, finally performing identity authentication on the user, updating corresponding parameters after the authentication is finished, and notifying the user of an authentication result. The system is prevented from being attacked by illegal users, and the access control security of the power distribution network is improved; the characteristics of a power distribution network server and a client are combined, a user keystroke characteristic factor and a dynamic password factor are combined, and a multi-factor identity authentication scheme is provided; and the challenge-response protocol and the MD5 algorithm are combined to verify the dynamic password of the user, so that the accuracy and safety of identifying the legal user are improved.

The invention belongs to the technical field of laser equipment control, and particularly relates to a laser cleaning equipment stage secret key data processing method and system, and the method comprises the steps that a server generates a unique authorization secret key through a multi-layer encryption algorithm containing MD5 and AES based on an equipment serial number, expiration time and authorization duration; and the device end receives the secret key input by the user, decrypts the secret key by using locally stored information, performs cross verification on the intermediate ciphertext generated by the same algorithm, and updates the effective usage period of the device according to the authorization duration in the secret key after the verification is passed. The system comprises an off-line working server upper computer and a laser cleaning equipment client comprising an MCU, a clock chip and a touch screen. The technical problem that flexible, safe and low-cost software authorization and locking management of laser cleaning equipment without a networking function is difficult to achieve is solved, accurate authorization control of one machine with one code and one time period with one code in an offline state is achieved, operation is convenient and fast, and safety is high.

The present application provides a method and device for identifying a device nameplate. The method for identifying a device nameplate includes: identifying text data in a nameplate image to be identified; obtaining a nameplate identification code and other information; when the nameplate identification code is incomplete, obtaining a transfer database, which includes a preset nameplate identification code and a password library corresponding to the preset nameplate identification code, and the password library includes a plurality of preset MD5 codes and combination rules corresponding to each preset MD5 code; obtaining an MD5 code obtained by calculation for the nameplate image to be identified according to each recognizable character in the obtained nameplate identification code and other information; comparing each MD5 code with the preset MD5 codes in each password library respectively, and obtaining the preset nameplate identification code corresponding to the password library with the same MD5 code and preset MD5 code. The present application can ensure that even if only a very small part of the recognizable nameplate identification code can be used to identify the device, so as to prevent the situation that the complete information of the device cannot be known after the nameplate of the device is damaged or corroded.

The invention relates to a front-end large file uploading method, and belongs to the technical field of digital information transmission. According to the method, a global uploading component is realized on the basis of a vue-simple-loader plug-in and a spark-md5. Js library, a state of calculating MD5 is added, the md5 value is calculated in a fragmentation manner, and an uploading page is optimized. According to the global uploading assembly, the user experience is optimized, the user can monitor the uploading progress in real time, the uploading progress comprises the file uploading state and the completion percentage, and the control of the user on the uploading process is enhanced; the method is easy to integrate with an existing Vue project, is convenient to develop and maintain, and has good universality and compatibility.

The invention relates to a territorial resource survey result storage method and system based on artificial intelligence, and aims to solve the problems of low efficiency and insufficient intelligence in the storage verification process of massive survey result data. The system preprocesses uploaded data through a survey result reading and analyzing unit, extracts core content and generates a unique identifier; the MD5 storage verification unit is used for realizing rapid comparison and result reuse; and when direct matching cannot be performed, the survey result storage and verification unit performs deep verification in combination with the encrypted information table, and manual verification can be triggered. The system is further provided with a processing unit, through maintaining a log table and a mapping relation pair, historical verification experience is dynamically accumulated, and features which are stable in conclusion and appear at high frequency are converted into a rapid judgment basis, so that an intelligent verification assembly line with self-learning and self-adaptive capabilities is formed. According to the method, the automation level and the processing efficiency of storage verification are remarkably improved while the data security and the verification preciseness are guaranteed.

The invention relates to the technical field of page lagging optimization, in particular to a client page lagging processing method and system.The method comprises the steps that when a client is started, an asynchronous monitoring thread is started to monitor an application page, and when a CPU or memory resource of the client exceeds a preset resource utilization rate, the client takes effect to work; when the asynchronous monitoring thread takes effect, capturing active page data, and performing MD5 calculation on the page data to obtain a page id; counting the same page id, and if the ratio of the occurrence frequency of the same page id to the occurrence frequency of all page ids is greater than a preset proportion in a preset time range, showing that the page is stuck; the client side sends a message to the server side, the server side receives the message, an AI large model analysis tool is used for analysis, and an analysis result is returned to the client side; the client carries out optimization according to the analysis result and processes the lagging problem; according to the method, the page jamming problem can be relieved in time, and time is provided for follow-up repair of developers.

The invention discloses a method and device for dynamically reducing retrieval data and computer equipment, and the method comprises the steps: receiving a screening condition sent by a front end, and extracting a column name array and a condition array in the screening condition; performing hash operation on the column name array according to an MD5 encryption algorithm, and generating a table name of the dynamic materialized view; the table name, the condition array and the column name array are converted into SQL condition fragments according to a preset rule, the SQL condition fragments are spliced into a pre-written SQL template, and therefore a complete SQL table building statement is generated; generating a materialized view according to the SQL table establishment statement; and returning data meeting conditions to the front end according to the materialized view. According to the method, the columns needing to be queried can be determined through the screening conditions, the columns are extracted to automatically generate the materialized view, scanning of a large amount of data and pre-defining of the materialized view are reduced, the flexibility when the materialized view is used for querying data is improved, and storage resources and computing resources are utilized to the maximum extent.

The embodiment of the invention provides a remote deployment implementation method and device based on security control. Relates to the field of software security upgrading. The method comprises the following steps: uploading a to-be-upgraded file to a backup area of a platform host; sending an upgrade restart command to the platform host and receiving a response; if the response is correct and the uploading of the to-be-upgraded file is completed, copying the to-be-upgraded file in the backup area to the storage area of the platform host by using the platform host, comparing the MD5 code of the to-be-upgraded file in the backup area with the MD5 code of the to-be-upgraded file in the storage area, and if the MD5 codes are consistent, generating a copy success mark through the platform host and executing a restart operation; and after the platform host self-starting script detects the copy success mark, copying the to-be-upgraded file in the storage area to the operation area of the platform host by using the platform host, comparing the MD5 code of the to-be-upgraded file in the operation area with the MD5 code of the to-be-upgraded file in the storage area, if the MD5 codes are consistent, operating an upgrading program by using the to-be-upgraded file through the platform host to upgrade the platform host, and if the MD5 codes are consistent, upgrading the platform host. And the security and the reliability of the upgrading process are improved.

The invention discloses a synchronous transmission method and device for changed data, equipment and a storage medium. When the method provided by the embodiment of the invention is executed, firstly, an incremental log of a source database can be monitored and read through a database incremental log analysis tool, incremental data is generated based on the incremental log, and serialization processing and encryption processing are performed on the incremental data to obtain a to-be-transmitted log. And generating an MD5 verification information file based on the to-be-transmitted log, and binding a user certificate for the to-be-transmitted log. Acquiring user identity information uploaded by the client through the server port, and performing identity verification on the user identity information by using the user certificate to obtain a first verification result; and when the first verification result indicates that the identity verification is passed, sending the MD5 verification information file and the to-be-transmitted log to the client through the server port by adopting HTTPS, so that the client updates the target database based on the information. According to the invention, the security risk of data change is effectively reduced, and the synchronization real-time performance is improved.

This invention belongs to the field of embedded software technology and discloses an MD5 algorithm optimization method and system based on embedded software. In byte data processing, this method uses a defined MD5 calculation main function combined with three interface functions and data structures to form an MD5 calculation module. This module provides MD5 cycle-by-cycle calculation services for byte data processing to the upper-level user module and determines whether each clock cycle times out. This invention proposes an optimization method for the MD5 algorithm in embedded software. Leveraging the consistency of the algorithm's calculation process in each loop, the total time consumed by the algorithm is evenly distributed across several adjacent software cycles, effectively preventing timeouts in individual cycles caused by calling the MD5 algorithm function. Furthermore, this method does not use system calls related to multi-threaded operations, is independent of the operating system platform, and facilitates software code portability and promotion.

The invention relates to a home gateway serial port log output method and device, and belongs to the technical field of computers. The method comprises the following steps: detecting whether a serial port interrupt signal exists or not; if the serial port interrupt signal is detected, performing primary verification by means of a unified fixed password; after the verification is passed, matching the generated off-line equipment exclusive key with the generated equipment real-time key; wherein the generation of the off-line device exclusive key comprises the following steps: generating an MD5 hash value based on an obtained device SN by means of an off-line key generation tool; the MD5 hash value is encrypted by using an AES-256-CBC mode; generating an off-line equipment exclusive key; the generation of the real-time secret key of the equipment comprises the following steps: reading an equipment SN; based on the read device SN, generating an MD5 hash value of the read device SN; the MD5 hash value is encrypted by using an AES-256-CBC mode; generating an equipment real-time secret key; and if yes, outputting the home gateway serial port log. By means of the scheme, the household gateway serial port log can be effectively prevented from being illegally acquired.

The present invention discloses a distributed file-level backup method and system based on object storage, which belongs to the technical field of object storage and container mirroring. The technical problem to be solved by the present invention is that as the amount of data increases, the backup time will be long, the backup data will be repeated, the synchronization of multiple copies will be slow, and the backup storage cost will be high. The technical solution adopted is that the method cuts the data into blocks, saves the block information to the task queue for file-level backup, and provides all backup servers for consumption; before each backup, the data blocks will be compared, and when a database with the same MD5 has been backed up, the current database will not be backed up, ensuring that only one identical data will be saved; the details are as follows: generating a system image; system initialization; backup task initialization; data backup; monitoring system; backup and recovery.

The invention provides a method and a device for uploading a file. The method comprises the following steps: acquiring file attributes of the file based on a file uploading request; if the file attributes are not stored in the file attribute material library of the cloud, storing the file attributes in the file attribute material library, storing the files in the file material library, and creating corresponding records in the MD5 code material library; and when file attributes are stored in the file attribute material library, obtaining a target path, and if a file exists in the target path of the cloud, but the file corresponding to the MD5 code corresponding to the target path is not subjected to hard linking to the target path, performing hard linking on the file corresponding to the MD5 code to the target path. And in combination with the material library of the primary account level, efficient duplicate removal is realized, and the uploading efficiency is remarkably improved. The MD5 check code is used for carrying out secondary duplicate removal on the file, so that repeated uploading and coverage caused by file attribute difference are avoided, the rendering problem is reduced, the integrity of file content and the rendering stability are guaranteed, and meanwhile, the file sharing and storage efficiency is optimized.

The invention provides a method and a device for generating a hash value of a burning configuration file, and aims to improve the generation efficiency of a vehicle-mounted burning configuration file through a method for screening a target file after file name matching and performing block streaming calculation on the MD5 hash value of the target file. The method for generating the hash value of the burning configuration file comprises the steps that when the size of a target file to be written is larger than a preset value, a file name list in a [MD5CHECK] data block of an initial configuration file of a vehicle-mounted burning program is obtained; determining the file of which the file name in the file name list is consistent with the file name in the target folder as a target file; the MD5 hash value of the target file is calculated in a block streaming processing mode, and the first data block and the second data block are adjacently read data blocks; and writing the first data block, the second data block and the corresponding MD5 hash values into the [MD5CHECK] data block of the target file to obtain a burning configuration file.

The application relates to the computer technical field and discloses an MD5 check data generation method, device and equipment and a storage medium. The method comprises the following steps: obtaining a first string to be processed; performing feature extraction on the first string to obtain a feature string representing feature information of the first string; generating a first salt value associated with the first string based on the feature string; and processing the first salt value and the first string through an MD5 algorithm to generate check data. The method can improve the difficulty of cracking the MD5 check data and enhance the data security of the MD5 salt check scheme.

The invention discloses a password recovery method and system of a VPN network layer and a storage medium, and relates to the communication and network security technology, and the method comprises the steps: in a positive mode of L2TP / IPSecVPN, obtaining a target parameter based on an intercepted data packet, and completing the negotiation of a pre-shared key PSK; the method comprises the following steps: in a main mode of an L2TP / IPSec VPN, firstly obtaining a key K generated by a Diffie-Hellman algorithm, and traversing a pre-shared key PSK based on the key K; and on the basis of the obtained PSK, carrying out MD5 iterative traversal so as to obtain an L2TP / IPSec login password Password. According to the method, PSK and Password in the positive mode and the main mode can be recovered at the same time, and the calculation amount is reduced.

The application relates to a data transmission protection method based on combination of an HMAC-MD5 algorithm and key pre-distribution, which combines a key pre-distribution scheme and an HMAC-MD5 algorithm based on symmetric cryptography and integrates a key pre-distribution management scheme based on a hash mechanism; that is, before data information participates in communication encryption transmission, the key held by a node is preloaded, and the one-way characteristic of a hash function is utilized to hide part of the key information of the node; the application utilizes the one-way characteristic of the hash function and the key pre-distribution to hide part of the key information of the node to a certain extent, that is, to reduce the number of key leaks of the node, and then to reduce the possibility of destruction of other links of the network by an attacker, so that the security of node communication is improved.

The invention relates to the field of data security, and discloses an interface authentication processing method and device, equipment and a medium, and the method comprises the steps: intercepting request entry parameter data containing an interface authentication annotation through an AOP section; obtaining an MD5 generation rule of the authentication from a preset generation rule pool according to the interface authentication annotation; performing interface authentication according to the incoming parameter data of the request and the MD5 generation rule of the authentication; intercepting request parameter data returned by the back-end service through the AOP aspect, and randomly selecting an MD5 generation rule from the generation rule pool to generate a new MD5 value; the MD5 generation annotation in the request-out parameter data is configured according to the randomly selected MD5 generation rule, the configured request-out parameter data and the new MD5 value are returned to the front-end user, and the MD5 generation annotation is used for instructing the front-end user to configure the corresponding interface authentication annotation when the front-end user initiates the request next time. The MD5 generation rule during each authentication is updated in an annotation manner, so that the efficiency and accuracy of interface authentication are improved, and the security of interface authentication is enhanced.