50results about How to "Implement integrity checks" patented technology

The invention relates to a system for realizing remote monitoring of integrity of a train and a method, and relates to an onboard device and a ground control center. The system comprises a train tail device and a locomotive device, a GPRS wireless communication module, a microprocessor, a GPS satellite positioning module, a safety monitoring module, a microprocessor, a GPS satellite positioning module, an alarm device, a communication controller and a ground database server. The train tail device is used for monitoring the working state and train tail position information of a train tail wind pressure detection device; the microprocessor is connected with a wireless communication device by an interface; the safety monitoring module comprises the wireless communication device; the communication controller is used for acquiring the data transmitted by the onboard device by GPRS and forwarding instructions sent by a console to the onboard device; and the ground database server stores the data received by the communication controller so as to supply data to user software of the console for use. The system can realize remote monitoring of integrity of the train, and also can utilize the GPS information to assist the integrity inspection of the train, thus achieving the purpose of guaranteeing driving safety.

The invention relates to a light-weight train automatic control system orienting to heavy haul railway of China. The system is connected equipment of a control center, interlocking equipment, equipment of a satellite positioning differential station, equipment of a transponder and track circuit equipment respectively; the train automatic control system comprises a ground control center ROC and vehicle-mounted equipment, wherein the ground control center ROC is connected with the equipment of a control center, interlocking equipment, equipment of a satellite positioning differential station andthe vehicle-mounted equipment respectively; the vehicle mounted equipment is connected with the equipment of the transponder, the ROC equipment and the track circuit equipment; the train automatic control system has a safety protection function, an operation plan management function, a temporary speed limitation management function and an automatic driving function on the basis of sufficiently reusing the achievements of existing heavy load train control system. Compared with the prior art, the system disclosed by the invention has the advantages of being light in weight, safe and efficient.

The invention discloses a digital audio record integrity detection method, which comprises the following steps of: 1, performing down-sampling on a digital audio record which is to be detected and carries power grid frequency; 2, performing band-pass filtering on sampled data; 3, performing framing processing on a filtered audio sequence, extracting the power grid frequency frame by frame, and calculating corresponding power grid frequency phases to obtain a power grid frequency phase sequence; and 4, detecting the integrity of the digital audio record according to characteristic values of the power grid frequency phases. The phase characteristics of the digital audio record with the power grid frequency, whether the digital audio record is subjected to tampering such as insertion, deletion and replacement or not is judged, and a tampering position is determined to detect the integrity of the digital audio record. The method can be used for the integrity authentication of a digital audio record evidence in court evidencing.

The invention provides a multi-parameter fused substation data integrity checking method, comprising the following corresponding checking steps according to a data incidence relation: checking data acquired from the same source by a weighted voting method; checking measurement data of the current flowing into a closed region by a current summation method; checking data having a constrained relationship by an equipotential searching method or a reasoning method based on the constrained relationship; checking different forms of the same data by a source-tracing computing method; checking the rationality of the sampled values and phasor values of an alternating-current electric capacity at two adjacent time points by a jumping detection method. The multi-parameter fused substation data integrity checking scheme provided by the invention performs integrity checking on the data in different forms from a plurality of dimensionalities of time and space, and systematically estimates and improves the quality of the basic data, thereby improving the reliability and usability of the substation data.

The invention discloses a full context-sensitive program control flow integrity protection method and system. According to the method, during an offline analysis stage, control flow information of a program is collected through simulative execution; an executive path is tracked during operation; the executive path, reaching a same indirect branch, of a process is tracked; path information is matched with the control flow information; if the matching succeeds, it is showed that a simulative executive path during offline analysis is the same as a real executive path during operation, and a subsequent legal target address can be judged according to the control flow information in the offline analysis; and if a target address during operation is different from the legal target address, it is judged that the program suffers from control flow hijack attack, so that a control flow check module notifies a process tracking module to stop the process. The invention furthermore discloses the full context-sensitive program control flow integrity protection system. The integrity protection is realized by tracking and checking executive path information, so that the program is prevented from being threatened by the control flow hijack attack.

The invention discloses a supervision data acquisition system and method used for a small loan company, and relates to the field of supervision data acquisition. The supervision data acquisition system comprises an information acquisition module, a data packet combination module, a data packet association algorithm module, a data acquisition module, a data packet verification module and a data packet separation module; the information acquisition module, the data packet combination module and the data packet association algorithm module are sequentially connected end to end; the information acquisition module is connected with the data acquisition module; the data acquisition module, the data packet verification module and the data packet separation module are sequentially connected end to end. The supervision data acquisition system and method used for the small loan company is relatively high in work efficiency, can efficiently place data loss during multiple-data-packet delivery, can improve the accuracy of a supervision conclusion, and is relatively safe to use and relatively wide in application range.

The invention relates to the chip focusing resistance ion beam attack field and provides a top metal protection layer integrity detection method based on a sigma-delta modulator. In the method, through detecting whether a resistance value of a metal line is changed, whether a protection layer is complete is detected and then whether an attacker uses FIB to correct the protection layer is determined. A chip top protection layer integrity detection apparatus is formed by a top metal line AB, operation amplifiers AMP and AMP1, PMOS pipes M1 and M2, an NMOS pipe M3, switches S1 and S2, a reference current source I, a comparator COMP with a clock terminal, a counter CT and a digital comparator DCMP. The apparatus is mainly applied to a chip focusing resistance ion beam attack occasion.

The invention belongs to the technical field of sensor networks, and particularly relates to a data fusion method capable of ensuring confidentiality and integrity in a wireless sensor network. The method includes the steps of forming a node set structure with three nodes in one set in a network, encrypting data collected by source nodes through a privacy homomorphic encryption method, respectively verifying the data integrity of data in the fusion and transmission process by combining the message authentication code (MAC) authentication technology with the node set structure of the network, and recovering the data through the privacy hoomorphic encryption technology to obtain a correct fusion result after the data are completely transmitted to a base station. By means of the method, the confidentiality and the integrity in the data fusion process and the data transmission process of the data in the wireless sensor network are ensured, the data confidentiality, the data integrity and the node energy are comprehensively taken into consideration when the data fusion method is designed, wrong data existing in the network can be detected, and good performance can be achieved through the mechanism even under the condition that the number of the damaged nodes is fixed.

The invention discloses a reversible information hiding framework with contrast pull-up by using histogram translation, and designs an improved RDH based on prediction error histogram optimal coding to expand a main body algorithm into an efficient hiding framework with dual embedding capability. Compared with a plurality of previous RDH technologies based on contrast ratio pull-up, the frameworkprovided by the invention not only has higher information embedding rate, but also can generate a secret-containing image with higher quality, and in addition, the security test also proves that the framework can effectively resist a plurality of famous steganalysis technologies (such as Enable classifiers and the like). Moreover, the framework has a dual-embedding function, and can embed copyright information such as an image identifier, a serial number, characters and the like into the carrier on the premise of ensuring the original appearance of the digital carrier, so as to achieve the purposes of copyright protection, integrity check and the like of the carrier.

The invention discloses a sensing original data safety protection method supporting data processing. The method comprises an initialization stage and a data reporting stage executed repeatedly. The initialization stage comprises clustering nodes, obtaining data recovery groups by various clusters and distributing secret sharing data to the nodes. The data reporting stage comprises hiding sensing data of the nodes by the nodes, generating watermark data, and recovering the sensing data through cooperation of data recovery nodes. The method has good expansibility for the addition of the nodes and good robustness for node failures. Tolerance for the captured nodes is improved, good privacy protection effectiveness is provided, and energy consumption is reduced at the same time; and integrity of data can be identified, so filtering for tampered data is achieved, and a network communication resource is prevented from being wasted.

The invention discloses a data processing method, system and equipment based on a cloud platform. The data processing method comprises the following steps: acquiring an administrator data publishing instruction; detecting whether data published by an administrator are complete or not, if the data are incomplete, executing a preset early warning operation; if the data are complete, detecting whether a primary database is in normal operation or not; and if the primary database is in the normal operation, triggering a data updating or data replacing instruction, uploading the data published by the administrator to the primary database, and matching and caching the data into an accessory database connected with the primary database by virtue of an instruction. The data processing method disclosed by the invention has the advantages that whether the data published by the administrator are complete or not is detected, data processing integrity detection is realized, and precision ratio of the database is improved; further whether the primary database is in the normal operation or not is detected, a technical means of uploading to the primary database realizes a synchronous or asynchronous data uploading mode, data loss risk under abnormal condition is eliminated, and data security is improved; and finally a technology of matching and caching data into the accessory database preventsdata loss, and more importantly, user experience is improved.

The invention discloses a flexible cable process digital prototype automatic construction system for spacecraft assembly. The flexible cable process digital prototype automatic construction system mainly comprises the following modules: an interface module, a product classification module, a connection relationship identification module, an assembly relationship resolving module and a cable process digital prototype construction module. According to the invention, rapid construction of the flexible cable process digital prototype is realized, and related requirements of cable laying are met; on the basis of simplifying an overall unit cable design model, complete information required by cable laying is reserved, and the probability of quality occurrence in the cable laying process in narrow spaces such as satellites is reduced.

The invention discloses a label based cross-domain data transmission protection method. Safety protection devices are deployed at a network border and are connected in series in a communication link;a safety protection device at a transmitting terminal builds a safety label and adds the safety label to the tail of an original IP packet for transmission; and a safety protection device at a receiving terminal verifies the original IP packet by utilizing the safety label and sends out the original IP packet which passes verification. As the safety label is attached at the tail of the data message for transmission, so that identification and processing of a network device on a transmission path for data is not affected, and the label based cross-domain data transmission protection method hasa transparent transmission characteristic. Algorithm identifiers, label length and version number in the label have good expansibility. Safety label values designed in labels can be used for realizingcompleteness verification of data packets; serial number designed in the label can be used for realizing anti-replay attack of messages. The label based cross-domain data transmission protection method can be applied to a network safety product, and has the advantages of being safe, reliable and practical.

The invention discloses an integrity checking method during kernel running and a computer readable storage medium, and the method comprises the steps: obtaining the data of a first field and the dataof a second field in a kernel file, and carrying out the one-way hash calculation of the data, and obtaining a first hash value and a second hash value; after the secure operating system runs, storingthe two hash values into a secure memory area; the common operating system sending the initial addresses and the corresponding lengths of the data of the first field and the data of the second fieldin the common memory area to the secure operating system; and the security operation system acquiring the data of the first field and the data of the second field from the common memory area at regular time, and performing integrity verification on the data according to the two hash values in the security memory area. According to the method, integrity verification can be performed on the runningkernel data, and it is ensured that when the corresponding region of the kernel is tampered, the corresponding region can be found in time and a corresponding security strategy is adopted.

The invention provides a data integrity testing system comprising a data processing server, for generating a matrix M according to data to be tested and storing the matrix in s ordinary servers, wherein the data processing server is also used for obtaining a matrix R according to a pseudorandom function f, a key kprf and seeds Sip<ver>, obtaining a matrix R<-> according to the matrix R and a generator g, obtaining a redundancy matrix S according to the matrix M, an s*k-order Cauchy matrix A and the matrix R, and storing the redundancy matrix S and the matrix R<-> in k redundant servers; the data processing server is also used for obtaining a matrix V according to the Cauchy matrix A and the generator g and transmitting the matrix V to a testing server; the testing server is used for testing the data to be tested and outputting test results. The method implements the testing for data integrity while protecting the privacy of information, and generates the redundancy matrix S and the matrix R<-> for data testing and restoration.

The invention discloses a method for checking the integrity of fine-grained data in vector space of finite fields, which belongs to the field of computers and information security. That the integrities of more data objects are indicated by utilizing fewer testing data is realized at a fine-grained level; and squeezed degree can be set and quantity of error data object can be accurately indicated according to the requirements of the user. The method for checking the integrity of fine-grained data ensures that source data objects to be checked are mapped to d-dimension vector space on a finite field GF q; all data objects are uniformly divided; and uniform crossover is realized among different division. A group of Hash is formed by a division, and finally an all-round scheme for checking the integrity of data is obtained. The invention ensures that memory space for storing integrity check data and network bandwidth for transmitting the integrity check data are saved; and the method is applicable to occasions, such as mass data integrity check, data security verification in electronic data service, and original evidence obtaining integrity and electronic data evidence fix.

The invention provides a data storage method, which is applied to data acquisition equipment and comprises the following steps of storing acquired data into a set memory; performing compressed encoding on the acquired data according to a preset encoding rule to obtain reference encoded data; and storing the reference coded data to a preset server so as to obtain the reference coded data from the preset server to verify the data stored in the set memory. In addition, the invention also discloses a data verification method, device and equipment, and a computer readable storage medium, by implementing the above scheme, integrity verification of the collected data is effectively realized, and malicious tampering of the collected data is effectively avoided; the reference coded data for data integrity verification is stored in the server, so that the defect that the reference coded data stored locally is easy to tamper is avoided, and the security of the reference coded data is effectivelyimproved.

The invention discloses an agricultural product traceability information storage method based on a block chain, and the method comprises the steps: generating block data comprising the head part of ablock, a block body and other information, and achieving the streaked, normalized and persistent storage of the agricultural product traceability information; information such as a block number and forward Hash is added to the head part of the block, and information such as ontology Hash reality is added to the block body, so that all the blocks form a one-way linked list together. The invention discloses a traditional agricultural product tracing information storage technology. the storage of the tracing data can be realized; query and block-based data integrity verification can be realized;the prevention control, check control and recovery control capabilities of enterprises, consumers and administrative competent departments on agricultural product traceability information are improved, the transparency of the agricultural product traceability information is promoted, and the safety awareness and participation degree of all the society bounds on the quality of agricultural productsare enhanced.