86results about How to "Achieve tamper resistance" patented technology

The embodiment of the disclosure relates to block chain-based distributed storage, and discloses a block chain-based distributed storage method. The method includes: obtaining a file which needs to be stored, and generating a hash value and an index of the hash value for the file. The method also includes: recording the hash value in a block chain network, and storing the file in a distributed network, wherein the file is located on the basis of the hash value in the distributed network. Therefore, according to the embodiment of the disclosure, tampering proofing and the distributed storage of the file can be realized through combining a block chain and a distributed file system, thus the problem of the limited capacity of block chain nodes is solved, and the authenticity and the availability of the stored file are effectively guaranteed.

The invention discloses a method for identity verification of a digital certificate based on a TEE (Trusted Execution Environment). The method comprises pre-configuration of a digital certificate system through a terminal, a digital certificate signature process and a digital certificate signature verification process. The method is characterized in that the terminal is provided with the TEE; the digital certificate signature process is carried out on the terminal and is used for utilizing a private key of the digital certificate to sign for a user request; the digital certificate signature verification process is used for authenticating identity of a requested user, and the authentication method comprises verification of validity and effectiveness of the digital certificate and integrity and correctness of the signature, wherein the digital certificate signature process is carried out under the TEE; the sensitive information, such as a user key, identity information, biological characteristic information and password information, is stored through a secure storage module, so that the problems that the signature process is carried out in REE and the sensitive information of the user is stored under the REE environment to cause privacy disclosure and stolen hidden danger of property in the prior art are avoided.

The invention provides an electronic record validation method and device. The electronic record validation method comprises the steps that a sending end receives files submitted by users and forms electronic files; the sending end seals electronic file number seals on the electronic files to generate electronic records; the sending end makes Hash abstracts for the electronic records to generate first hash values; the sending end uses local private keys to perform hash value signature so as to generate digital signatures; the sending end conducts symmetrical encryption on the electronic records and the digital signatures to generate first ciphertexts; the sending end utilizes a public key of a receiving end to perform asymmetrical encryption on symmetrical encryption keys of the first ciphertexts so as to generate second ciphertexts and sends the first ciphertexts and the second ciphertexts to the receiving end; the receiving end conducts decryption and signature operation verification on the first ciphertexts and the second ciphertexts. The electronic record validation method and device can prevent the electronic records from being counterfeited, tampered and disavowed.

The invention relates to a concealed communication method in a block chain network environment. The original concealed information is encoded by using a predetermined source encoding or channel encoding mechanism. The encoded information is modulated with the time interval of the information by a predetermined modulation method in advance to generate a time interval sequence of normal informationtransmission to be sent to a block chain network, and each information of the time interval sequence of the normal information transmission is timestamped by a block chain mechanism. By using the P2Pnetwork transmission mechanism and the distributed chain storage mechanism under the block chain network environment, the time interval sequence of the normal information is transmitted and stored with high reliability. By observing the block chain network, the receiver of the concealed information obtains the time interval sequence of the normal information transmission sent by the sender, and the acquired information in a manner of information time interval is demodulated to obtain demodulated information; the demodulated information is decoded.

The embodiment of the invention provides a power terminal data security management method based on a block chain, and the method comprises the steps: carrying out the data aggregation processing of the power information of a target power terminal, and obtaining the first target data of the target power terminal, wherein the power information comprises the environment information and transaction information of the power terminal; performing data encryption processing on the first target data to obtain second target data and a target data signature; and sending the second target data and the target data signature to a blockchain node, so as to enable the blockchain node to perform signature verification. According to the embodiment of the invention, the integrity and confidentiality of the electric power data collected and generated by the electric power terminal are improved, so that the electric power data is not artificially modified in the application and storage process, and the consistency and tamper resistance of the electric power data in the application and storage process are realized.

The invention discloses an evidence collecting system and method based on fingerprint authentication and a GPS. According to the method, an evidence collecting operator combines Hash results generated by electronic evidences with generation time, operator information, recorded fingerprints and GPS positioning information to be taken as evidences, and electronic data for evidence collection is subjected to secondary fixing through an encryption algorithm, so as to realize unchangeable verification. The functions of electronic data secondary change prevention, original edition electronic data verification, batch electronic data similarity matching and the like can be realized.

The invention discloses an electronic signature method. The method comprises the steps of performing authentication via a client by a user; generating and storing an electronic signature of an authenticated user by the client; generating a two-dimensional code to be signed by the server in an electronic document to be signed; scanning the two-dimensional code to be signed generated in the step 3 by the client, appending the electronic signature data generated in the step 2 to the electronic document to be signed, and simultaneously generating a verification two-dimensional code for verifying authenticity in the electronic document to be signed; scanning scans the verification two-dimensional code generated in step 4 by the client to verify the authenticity of the electronic signature. Theelectronic signature method realizes the anti-tampering and traceability of signature by digital certificate, biometric identification and two-dimensional code verification, so it solves the securityand convenience problems in the process of user remote signature.

The invention discloses a security chip based on PUF and zero knowledge proof, an application method, a system and a medium. The security chip based on PUF and zero knowledge proof comprises a PUF circuit module, a ChipID generation circuit module, a zero knowledge proof circuit module and a main control module. The zero knowledge proof circuit module comprises a first execution circuit used for generating a publicable zero knowledge identification number PID and a second execution circuit used for generating a proof code P. An identity authentication application method comprises the step of realizing the identity authentication method based on the lightweight security chip based on the security chip. The identity authentication method does not need a complex interactive protocol. The request end and the server end only need to execute zero knowledge proof calculation. Compared with a digital signature and authentication method based on a public key cryptographic algorithm, the identity authentication method is simpler and has the advantages of good universality, high security, low authentication overhead, simple authentication process and the like.

The invention provides an encryption control method and a device capable of achieving tamper-proofing and repudiation-proofing by means of public key infrastructure (PKI). The encryption control method and the device capable of achieving tamper-proofing and repudiation-proofing by means of the PKI are used for enabling data being transmitted to be encrypted by a sending end, wherein the data being transmitted includes initial encryption data and clear data. The encryption control method capable of achieving tamper-proofing and repudiation-proofing by means of the PKI comprises the following steps: (1) conducting a first encryption algorithm on the clear data, and enabling an algorithm result to be a first median; (2) conducting a second encryption algorithm on the initial encryption data and the first median, and enabling an algorithm result to be an encrypted value, and the encrypted value is sent to a corresponding receiving end by the sending end. The invention further provides an encryption control device capable of achieving tamper-proofing and repudiation-proofing by means of the PKI and a corresponding financial transaction processing system. According to the encryption control method and the device capable of achieving tamper-proofing and repudiation-proofing by means of the PKI, encryption processing is conducted on clear data and encryption data (initial encryption data) in a message to achieve encryption for a transaction message. Therefore, encryption scheme which is simple and easy to carry out can be utilized to achieve the purpose of tamper-proofing and repudiation-proofing for transaction data.

The invention provides a crop seed safety traceability system based on a block chain technology. The crop seed safety traceability system comprises a service layer, a business layer, an interface layer and an application layer, wherein the service layer provides network and data processing service for the business layer; the service layer provides a service logic function of the system; the interface layer provides an intermediate message service for the service layer and the application layer; the application layer provides man-machine interaction service and performs information interactionwith the business layer; the service layer comprises a block chain network, and the block chain is returned to the application layer through the block chain network. The invention provides a crop seedsafety traceability system based on a block chain technology. The security, integrity and authenticity of data recorded on the chain are ensured through the block chain network, the functions of tamper-proofing, information sharing, traceability system management strengthening and the like are achieved, and the market competitiveness of crop seeds and the enterprise brand image are improved whilethe quality of crop seed products is improved.

The invention discloses an anti-tampering method of IPTV multicast contents. On a live broadcast source end, a TS multiplexer is modified, and an anti-tampering generation module is added; when a TS multiplexing module detects that the PES is carried as an I frame, the anti-tampering generation module is called to transmit the PES and to package the obtained anti-tampering information in a TS transmission stream; and on a terminal side, a TS demultiplexer is modified, and an anti-tampering verification module is added; and a TS demultiplexing module detects the PES of the I frame and the corresponding anti-tampering in real time and calls the anti-tampering verification module to complete anti-tampering verification. By adoption of the anti-tampering method disclosed by the invention, theanti-tampering security of the IPTV multicast content is improved, no dependence is made on the hardware, and the transformation of the existing system is small.

The invention discloses a radio frequency tag data coding system and a radio frequency tag data coding method for vehicle identification. The system comprises a computer, an encryption/decryption and verification code calculation device, an RFID reading-writing device and an RFID tag. The computer divides an EPC region of the RFID tag into a data part and a verification code part and codes a license plate number; the encryption/decryption and verification code calculation device encrypts the coded license plate number data and calculates the verification code of the license plate number data; the computer concatenates the license plate number data and the verification code; the RFID reading-writing device writes the concatenation data into the EPC region; the encryption/decryption and verification code calculation device carries out decryption to obtain decryption data and calculates the verification code; and the computer compares the decrypted verification code with the verification code part of the EPC region and judges whether data in the EPC region is tampered. The defect that data encryption and verification code calculation cannot be carried out due to the fact that the license plate number is stored in the EPC region of the RFID tag in the prior art is overcome.

The invention discloses a file tamper-proofing method and system, a terminal and a trusted cloud platform, and relates to the field of mobile terminal security. The method comprises the following steps: checking key files of an operating system to obtain check values of the key files; encrypting the key files and the check values based on trusted information of the terminal; transmitting the encrypted key files and check values to the trusted cloud platform; and if the terminal determines the exception of the key files or the exception of the key files in response to the trusted cloud platform, giving an alarm prompt to a user to realize tamper proofing of the key files. Through adoption of the file tamper-proofing method and system, trusted information of an operator on the terminal and the trusted cloud platform of the operator are fully utilized to ensure the file security of a terminal user from the underlying layer.

The invention discloses a CAD signature certification system used for construction drawing examination. An examination system host is connected with the input end of a CA signature server through the Internet, an Internet router and a firewall. The output end of the CA signature server is connected with the CAD signature application server and a PDF signature application server. The invention further discloses a CAD signature certification method used for construction drawing examination. The method comprises the steps of 1 logging in the CAD signature certification system through a login password; 2 waiting for a CA certificate authority to issue a CA certificate; 3 ensuring that a CAD drawing is marked with a signature identifier; 4 confirming each professional CAD drawing; 5 calling the key and signature of the CA signature server to carry out electronic signature on the drawing; 6 verifying the CA signed CAD drawing through drawing experts; 7 carrying out CA qualified signature again according to screening; and 8 downloading the drawing by a design organization. The validity of the CA qualified signature is verified through a signature plug-in.

A database tamper-proofing method applied to data security products is provided. The method comprises: designing a logic operation for a database table. The logic operation comprises logical addition, logical deletion, and logical modification. The logic addition is newly adding a valid data record; the logical deletion is newly adding a deletion record for representing that object data has been deleted; and the logical modification firstly executes logic deletion for recording that the object data has been deleted, and executes logic addition for recording modified object data and identifications of the object data. According to the technical scheme of the present invention, since only write permissions to the database table of ordinary users are retained, and each database table contains a data structure for implementing conversion from the bottom addition to the logic operation, so that only-addition operations are used to stimulate the addition, deletion and modification operations on the bottom of the datable table; and the hash value is recorded in the only-addition operation process to be taken as fingerprint verification to ensure the authenticity of the audit history, so that not only all operations of the database access layer are retained, but also tamperresistance in the whole process of the history of all the database objects is realized.

The invention belongs to the technical field of wisdom education, and discloses a wisdom education system and method based on virtual reality and big data, and the method comprises the steps: collecting education data through video collection equipment, and enabling data processing equipment to process the collected education data; transmitting the education data through the communication device,and encrypting the transmission information through the encryption program; big data resources are concentrated through the cloud server to optimize the education data; constructing an education target three-dimensional model through a modeling program; rendering the education target three-dimensional model through a rendering program; carrying out simulation output on the three-dimensional modelthrough a display, and optimizing problems existing in the three-dimensional model through an optimization program; and displaying the education virtual scene through VR equipment. According to the invention, the accuracy of resource collection can be improved through the big data optimization module; and the storage module effectively realizes tamper-proofing of the education information and improves the reliability of the education information.

The invention discloses a food label unique code publishing and circulation traceability method based on a block chain main and auxiliary chain technology. The commodity label unique code informationblock chain technology based on public and private key pairing verification is adopted. Main chain and auxiliary chain information counterfeiting prevention, tampering prevention and replay preventionare achieved, food label unique code network propagation and independent chaining and rapid tracing of single piece of food information can be achieved, and a user comprises a third-party mechanism,manufacturers at all levels, a dealer and a consumer which are connected with the Internet. Server databases of the third-party mechanism, manufacturers and dealers at all levels store food label information block chain account books in server databases, new legal verification data issued by other parties is received in real time, local account books are updated in time, new data blocks are hookedaccording to food transfer conditions, and new block chain data are issued; and a consumer obtains the latest timestamp block chain from a plurality of enterprise servers during code scanning, and calculates and obtains the food traceability information chain by comparing the latest timestamp block chain.

The invention discloses a commodity authenticity detecting method and system based a two-dimension code. The method comprises the steps that a third party service server is used for manufacturing the commodity two-dimension code for a commodity, and meanwhile the commodity two-dimension code is signed through a platform certificate corresponding to the third party service server; an NFC safety client side is used for scanning the commodity two-dimension code, and a signature value of the commodity two-dimension code is obtained; whether the signature value obtained by the NFC safety client side is matched with the two-dimension code signature value prestored in an image copyright authentication and management server or not is judged through the image copyright authentication and management server; if the signature value obtained by the NFC safety client side is matched with the two-dimension code signature value prestored in the image copyright authentication and management server, it is judged that the commodity is an authentic product. The legal right of commodity manufacturers is protected from a data source, data credibility and safety of data through the secret key technology, the NFC technology and the two-dimension code technology.

The invention provides an operation record processing method in power monitoring based on a block chain. The method comprises the following steps: combining the block chain technology, constructing ablock chain for a regulation and control main station and an accessed transformer substation; generating an operation command record and an operation result record for the key operation of the power system; adding the operation records into the block chain. The method achieve the characteristics of reliable transmission, complete data, primary anti-repudiation and the like. Public transparency, tamper resistance and traceability of all the operation records are achieved, the safety problem of key operation record information of the power monitoring system is solved, and a powerful support is provided for information safety of the power monitoring system.

The invention discloses a tax monitoring system and a monitoring method. The system includes a system host, an alarm, a power module, a control input module, a kernel layer, a networking module, a taxdeclaration module and a block chain storage module, the memory includes a basic information storage unit, a tax Data Unit and a Tax Monitoring Procedure Unit for the current period, the system hostruns the tax monitor, reads the basic information from the basic information storage unit to perform calculations, obtains the tax data of the current period and stores them in the tax data unit of the current period and activating the alarm to send out the tax declaration warning signal, the manager operation control input module confirms or modifies the tax data to be reported in the current period. After confirmation, the system mainframe controls the operation of the tax declaration module, starts the tax declaration operation, and stores the tax declaration information in the block chainstorage module after the tax declaration is completed. The tax monitoring system or the tax monitoring method of the invention is simple in operation and high in efficiency, can reduce or reduce the behavior of the enterprise violating the tax law, and can reduce the economic loss and the bad influence caused by the tax problems of the enterprise.

The invention discloses an Interne-of-Things data storage method based on a blockchain and an Interne-of-Things system. The Internet of Things at least comprises two main nodes in communication connection with each other, and each main node manages a plurality of sets of node equipment in communication connection with the main nodes. The Interne-of-Things data storage method based on the blockchain comprises the steps of: collecting data, by means of an arbitrary main node, of the plurality of sets of node equipment managed by the main node; performing unified data expression operation on thedata of the plurality of sets of node equipment to obtain a plurality of pieces of to-be-stored data; and based on a preset consensus algorithm, synchronizing the plurality of pieces of to-be-stored data to each main node and node equipment. According to the Internet-of-Things data storage method based on the blockchain and the Internet-of-Things system of the invention, the blockchain is adoptedto realize sharing and synchronization of the Interne-of-Things equipment data. Due to the fact that the blockchain has tamper resistance, the Interne-of-Things data written into the blockchain cannotbe maliciously forged or modified, and distributed storage, tamper resistance or loss of the Interne-of-Things data are achieved.

The invention discloses a cross-system electronic document secure exchange and sharing method, and belongs to the technical field of information security and computer software. The method includes the steps that firstly, a sender system user puts forwards a sending request for sending an electronic document to other systems at a client to a local system server side; secondly, after a sender system server completes security detection, the request is transmitted to a management and control center server, and the electronic document is uploaded to the management and control center server; thirdly, the management and control center server receives the request and saves the electronic document; fourthly, a receiver system server issues a request to the management and control center server to inquire the electronic document sent to a receiver system user by a sender system; fifthly, a receiver system downloads the electronic documents from a management and control center and informs the receiver system user. The method can be used for cross-system electronic document exchange and sharing.

The invention discloses a food label unique code publishing and circulation tracing method based on a blockchain main and auxiliary chain technology. The method comprises the steps: employing the commodity label unique code information blockchain technology based on public and private key pairing verification; enabling a front-stage production enterprise and a rear-stage production enterprise or asales enterprise for producing a certain piece of food in a circulation chain to link unique code information blocks of food labels into a secondary chain through a private key and public key pairedverification method, and adding the auxiliary chain and the timestamp into the main chain as block information, so the counterfeiting prevention, tampering prevention and replay prevention of the mainchain and the auxiliary chain information are realized, and network propagation of the unique code of the food label and independent chaining and rapid tracing of single food information can be realized, wherein users comprise a third-party mechanism, manufacturers at all levels, dealers and consumers which are connected with the Internet respectively; the server databases of the third-party mechanism, manufacturers and dealers at all levels are used for storing food label information blockchain account books, receiving new legal verification data issued by other parties in real time, updating local account books in time, hooking new data blocks according to food transfer conditions, and issuing new blockchain data; and enabling a consumer to obtain the latest timestamp blockchain from aplurality of enterprise servers during code scanning, and performing calculation to obtain the food traceability information chain by comparing the latest timestamp blockchain.