94results about How to "Improve encryption efficiency" patented technology

The invention discloses an SM4 encryption method based on an FPGA, and relates to the technical field of data encryption, and the method comprises the steps: obtaining to-be-encrypted plaintext data; a plurality of SM4 encryption cores are configured on the FPGA chip to perform parallel encryption operation on plaintext data to be encrypted; wherein each SM4 encryption core adopts a pipeline architecture, and the pipeline architecture comprises an access device, a round function arithmetic unit and a key adder; an extraction circuit based on physical noise and integrated on the FPGA chip is utilized to generate N-bit random numbers as encryption keys of each SM4 encryption core; handshake signals are collected to calculate the operation efficiency of each SM4 encryption core; adjusting FPGA resource allocation among the SM4 encryption cores by adopting a priority scheduling algorithm according to the operation efficiency; in the encryption operation process, power consumption equalization is carried out by adopting polynomial and logical operation hybrid calculation, and time sequence randomization is carried out by adopting a random waiting period. Aiming at the problem of weak anti-difference sensitivity in the prior art, the side channel attack resistance is improved.

The invention discloses a file transmission protection method, system and device based on multiple encryption algorithms, and relates to the technical field of information, and the method comprises the steps: selecting a target file needing to be transmitted, carrying out the preprocessing, and generating file fragments; analyzing the sensitivity of each file fragment, and performing hierarchical encryption processing to obtain an encrypted fragment set; selecting a steganography carrier file, and embedding the encrypted fragments into the carrier file to generate a steganography index table; generating a dynamic session key based on the confusion key pool, encrypting the steganographic file transmission layer and embedding a dynamic key generation parameter; the receiving end generates a session key according to the transmission message header, decrypts the transmission layer data, extracts the steganographic file and decrypts the steganographic file; recombining the decrypted and recovered fragmented data into a complete file according to an identifier sequence; by dynamically matching the steganography carrier file, the efficient embedding of the fragmented data and the generation of the steganography index table are realized, and the concealment and the adaptability in the transmission process are ensured.

The invention relates to the technical field of electric power data acquisition with an encryption function, and discloses an electric power data acquisition terminal with an encryption function and a method. By combining the environment data and the equipment state, the encryption process enhances the security and adaptability of data encryption. Environment and equipment data input ensures that encryption results are different, and potential safety hazards caused by static data sources are avoided. The data are reasonably combined through a seed generation formula, it is ensured that the seeds have enough randomness, and the brute force cracking risk is reduced. The key generation strategy generates a unique key through a seed, so that the attack resistance of the system is improved. The key matrix and random number generation strategy improves the unpredictability of the encryption algorithm. And dynamically updating the encryption matrix to prevent the encryption matrix from being cracked in long-term use. In the whole process, comprehensive protection of the data in acquisition, encryption and transmission is ensured, and the data is effectively prevented from being tampered or stolen.

The invention discloses a hierarchical encryption method, system, device and medium for a privacy image, and relates to the technical field of image processing and information security, and the method comprises the steps: segmenting a to-be-encrypted image divided according to a region threshold, and obtaining images with privacy of different importance degrees; according to the privacy importance degree of an image region, selecting encryption algorithms of different levels to encrypt a high-privacy-level image, a middle-privacy-level image and a low-privacy-level image, and performing main element product operation by using a chaos matrix and the encrypted high-privacy-level image, middle-privacy-level image and low-privacy-level image to obtain a high-privacy-level image, a middle-privacy-level image and a low-privacy-level image; and a final encrypted image is obtained. According to the image encryption method, selective algorithm encryption is carried out on each part of the to-be-encrypted image, high-strength encryption processing does not need to be carried out on the whole image, and the encryption method is numerous, so that the encryption strength and security can be remarkably improved while the encryption efficiency is improved.

The invention relates to the technical field of data security, in particular to a security protection method and system for electronic archive information and a medium, and the method comprises the steps: dividing archive data, and analyzing the editing condition of data blocks in the archive data to obtain editing parameters of the data blocks, the method comprises the following steps: analyzing the distribution difference of editing clusters to which different data segments belong relative to data segments in all editing clusters in quantity and editing time by utilizing editing clusters obtained by clustering the data segments, and obtaining a differentiation coefficient of the data segments, and based on a data block to which any data segment belongs and the quantity of the data segments in the editing clusters; and carrying out key length evaluation on the data segments in combination with editing parameters and differentiation coefficients, so as to encrypt and store the archive data. According to the method, the encryption strategy of the AES algorithm is dynamically adjusted according to the data segment characteristics and the editing history, so that the performance of the encryption process is optimized while the data protection effect is improved.

The invention relates to the technical field of data processing, in particular to a privacy data encryption method and system of an information service platform. The method comprises the following steps: acquiring running state data of the information service platform and privacy data of a user; constructing an adaptive homomorphic encryption parameter model according to the running state data and the privacy data; and encrypting the privacy data of the user by using the self-adaptive homomorphic encryption parameter model. According to the embodiment of the invention, the operation state of the information service platform and the privacy estimation value of the user privacy data are combined, and the dynamically adjusted self-adaptive homomorphic encryption model is adopted, so that the encryption strength can be automatically adjusted according to the resource load and the data privacy requirement of the platform. Through the mode, on the premise that the privacy of the user is protected, the encryption efficiency and effect can be improved, and the platform performance bottleneck caused by overhigh load in the encryption process is avoided.

The invention provides a power business data security encryption method based on the Internet of Things, and the method comprises the steps: extracting a plurality of candidate data nodes from associated encrypted data nodes of a target security encryption unit, and determining candidate privacy sensitive features in each candidate data node according to a plurality of predefined reference privacy sensitive feature encryption strategies; on the basis, encryption path decision is carried out, so that the pertinence of encryption processing is improved, and the encryption process is ensured to be closely related to privacy sensitive characteristics of data. Besides, the encryption cost of each encryption strategy can be quantified by comparing the error between the encryption path decision result of each candidate data node under different encryption strategies and the default encryption path, so that the target privacy sensitive feature encryption strategy most suitable for the current target security encryption unit is optimized, and the encryption efficiency is improved. The security and encryption efficiency of the power business data in the Internet of Things environment are effectively improved, and secure transmission and storage of the power business data are ensured.

The invention relates to the technical field of image processing, and discloses an image processing method and device based on secret key updating, a medium and a chip system.The method comprises the steps that first digest values corresponding to an Nth frame image and an (N-1) th frame image are obtained, image block information is extracted from the Nth frame image, and the N frame images are coded; performing key updating and initialization vector IV updating processing by using the first digest value and the image block information to obtain a first key and a first IV value; inputting the first key and the first IV value into a stream encryption algorithm system for processing to generate a key sequence; and encrypting the encoded Nth frame of image by using the key sequence to obtain an encrypted stream and outputting the encrypted stream. The method not only realizes encryption and decryption of the video image, but also ensures the security of the image data.

The invention discloses a secret key following transmission system and method based on dynamic window encryption, and the system comprises a transmitting end which is configured to obtain a chaotic initial value and an original signal to be transmitted; processing the chaotic initial value through a public key encryption module and a first constellation mapping module to obtain encryption key information; the original signal is processed by a bit stream encryption module, a second constellation mapping module and a symbol encryption module to obtain encrypted information, the bit stream encryption module realizes bit stream encryption by using a disturbance sequence generated by a chaotic initial value, and the symbol encryption module realizes symbol-level scrambling by using a'dynamic window structure '; superposing the encrypted information and the encrypted key information by using a power division multiplexing module to obtain to-be-transmitted composite information; the composite information is converted into a time domain signal through fast inverse Fourier transform (IFFT), and signal transmission is carried out through a channel; and dual improvement of communication safety and communication efficiency is realized.

The invention discloses a spatial database encryption method and device and a medium, and relates to the technical field of spatial databases. The method mainly comprises the following steps: generating a coordinate ciphertext sequence according to a to-be-encrypted coordinate sequence by adopting a ciphertext packet link mode of an SM4 algorithm; generating an abstract value according to the WKB space field binary sequence by adopting an SM3 algorithm; according to encryption extension WKB structures corresponding to different geometric types, the coordinate ciphertext sequence and the abstract value are recombined, and a geometric object ciphertext sequence is generated; an order-preserving encryption algorithm is adopted, and a spatial index is generated according to the minimum enclosing rectangular object; storing the spatial index into a new index field in a spatial database table; and storing the geometric object ciphertext sequence into a spatial field of the spatial database table. According to the method, the availability and the use efficiency of the spatial database can be influenced as little as possible while the security of the spatial data is ensured.

The invention discloses a data security management system and method based on report generation, and relates to the related technical field of data processing, and the method comprises the steps: obtaining a plurality of report data sets corresponding to a plurality of users; and performing security encryption processing on the plurality of report data sets through the plurality of encryption blocks, and outputting a plurality of encrypted report data sets. And carrying out correlation analysis on the plurality of report data sets, and outputting correlation indexes. Based on the relevance index, a temporary security token is generated, and the temporary security token is used for authorizing the current user to access the report data set with the relevance index larger than a preset relevance index. And obtaining a shared report template, and when the plurality of report data sets are input into the shared report template, performing association decryption access management on the shared report template by the current user according to the temporary security token. The technical problem that in the prior art, a security management system is difficult to carry out efficient encryption and security management on report data in a multi-user environment is solved.

The invention provides an image encryption algorithm based on a four-dimensional conservative chaotic system, a novel four-dimensional conservative chaotic system is designed, and dynamic analysis of the chaotic system proves that the chaotic system has good chaotic performance. In addition, an initial value construction scheme based on a plaintext hash algorithm is designed for chaos. And scrambling and diffusing original image data through four random sequences generated by the system to obtain a ciphertext in a uniform noise shape, thereby completing an encryption process. And finally, decryption is completed through inverse diffusion and inverse scrambling. Compared with a previous image encryption algorithm based on a hyperchaotic system, the image encryption algorithm has the advantages that simultaneous scrambling of rows and columns is realized, the encryption efficiency is greatly improved, and the encryption performance is better. Therefore, the security of the image information can be effectively guaranteed.

The invention discloses a security encryption method of a mobile storage device, an electronic device and a storage medium, and relates to the technical field of mobile device data encryption, comprising the following steps: establishing a chaotic mapping system including a first chaotic mapping and a second chaotic mapping; establishing a chaotic sequence generation method based on the first chaotic mapping and the second chaotic mapping; splitting a file header of the to-be-encrypted file, and encrypting the file header based on a chaotic sequence generation method; segmenting the file content of the to-be-encrypted file, and encrypting the file content based on a chaotic sequence generation method; the method is used for solving the problem that the existing mobile equipment data encryption technology cannot ensure the encryption security in a mobile computing environment and cannot quickly encrypt a large file in the form of operating a character field at the same time.

The invention discloses a medical information data intelligent encryption method based on a digital signature. The method comprises the following steps: S1, acquiring medical information data; s2, adopting a public key infrastructure and a hash function to generate a digital signature of the medical information data; s3, performing data anonymization and desensitization processing on the medical information data, and removing sensitive information through a privacy protection technology; s4, introducing a machine learning algorithm and a rule-based encryption strategy, dynamically analyzing the type, sensitivity and user behavior of the medical information data, and intelligently selecting an encryption algorithm; s5, adopting a symmetric encryption and asymmetric encryption combined method to quickly encrypt a large amount of medical information data; and S6, performing secure storage and transmission on the encrypted medical information data and the encrypted symmetric key, and recording the signature and encryption process of the medical information data by using a block chain technology. The system has the advantages of high security, high intelligence, comprehensive privacy protection and transparent data processing.

The present invention provides a data encryption storage method based on the national secret algorithm, which belongs to the field of data security. The present invention includes four parts: the issuance of the agreed key, the generation of the master key, the generation of the data key, and the data encryption; the key management service is the key life cycle management center, which is responsible for the centralized management of the key. The key cannot be obtained from the outside, and the data key can be derived from the master key for use; the encryption and decryption of the data is realized locally by securely transmitting the data key. The risk of data storage is reduced and the security of the encryption key is improved.

The invention provides a financial data encryption method and system. The method comprises the following steps: calculating an encryption parameter and a master key based on a first prime number and a second prime number; calculating a public key and a private key; performing anonymous processing on the user to obtain anonymous identity information; encrypting the financial plaintext data to obtain ciphertext data; performing identity verification based on the anonymous identity information, and if the identity verification is passed, calculating a decryption key; and performing local decryption processing on the ciphertext data based on the decryption key to obtain the decrypted financial plaintext data, thereby avoiding the abuse and leakage of the key, and effectively protecting the privacy of the user at the same time to improve the security of the data and the encryption efficiency.

The invention provides an image encryption method in a garbage classification process, and the method comprises the following steps: S1, collecting a garbage image, and carrying out the preprocessing of the garbage image; s2, a deep learning model is adopted to classify the preprocessed junk images; and S3, the classified junk images are encrypted through an encryption system, the confidentiality of the junk images in the transmission process is ensured, and the problem of sensitive information leakage possibly caused in the junk classification process can be effectively solved through the method.

The invention relates to the field of data encryption, and discloses an e-commerce shop data encryption method, which comprises the following steps: acquiring data information of to-be-encrypted data, recoding characters in sensitive fields in the to-be-encrypted data by using integers from 0 to 63, and representing each recoded character by using a 6-bit binary system, obtaining the recoded data of the sensitive fields; and encrypting the 64-bit data block and the multiple data block by adopting an AIFT3DES encryption algorithm to obtain the encrypted 64-bit data block and the multiple data block, outputting the encrypted data, performing data storage on the encrypted data, and limiting the access authority of the encrypted data. Through the technical scheme provided by the invention, the length of the encrypted sensitive field can be kept unchanged, and the data security is ensured.

The present application discloses a model encryption method, device, storage medium and electronic device, and relates to the field of computer technology. The method includes: compressing a target model according to preset compression information to obtain a compressed model; determining an encryption strategy according to the storage space of the compressed model; obtaining a parameter file of the compressed model; encrypting the parameter file according to the encryption strategy to obtain an encrypted file. By compressing the model and determining the encryption strategy according to the compressed model, the present application can save computing resources of a computing device while encrypting the model, and can also improve the efficiency of encrypting the model.

The invention relates to the field of security, in particular to a hard disk data security system based on double encryption, which comprises an encryption range setting module for determining a first encryption range according to file access authority in hard disk data and determining an encryption mode based on file storage position in the first encryption range; the encryption mode adjusting module is used for screening the first encryption range, caching the screened data to determine a second encryption range and adjusting the encryption mode of the second encryption range according to the access frequency of the file in the second encryption range, and the adjusted encryption mode is a second encryption mode; the speed matching module is used for setting a preset speed based on the second encryption mode, and sending an early warning instruction when the actual encryption speed of encryption by adopting the second encryption mode exceeds the preset speed; and the early warning module gives an alarm based on the early warning instruction. And the stability of the system and the security of data are ensured.

The invention relates to a real estate mortgage system, and belongs to the technical field of information management. Through information interaction between the real estate server and the real estate bureau as well as the credit management system, contract information is obtained, a contract file is formed after the contract information is perfected and supplemented, the contract file is sent to the credit management system for seal use, and the real estate server downloads the seal-used contract file and sends the seal-used contract file to a user side light program; checking the contract file online through a user side light program and performing electronic signature; in addition, the real estate server calls a signature verification service to carry out digital signature, sends a contract file with a digital signature to a real estate bureau for auditing, and sends an electronic auditing certificate to the credit management system after the auditing is passed. Therefore, the whole mortgage process is carried on line, the operation process of a customer manager is simplified, the investment of resources such as manpower, financial resources and material resources is greatly reduced, and the working efficiency of the mortgage process is improved on the whole.

The embodiment of the present application discloses a homomorphic encryption processing method and related equipment, the method comprising: reading a first zero ciphertext, and obtaining the most recently retained P second zero ciphertexts, where P is a positive integer; detecting whether the first zero ciphertext is a new zero ciphertext; when the first zero ciphertext is a new zero ciphertext, encrypting the plaintext to be encrypted according to the first zero ciphertext to obtain the first ciphertext; when the first zero ciphertext is not a new zero ciphertext, selecting Q second zero ciphertexts from the P second zero ciphertexts, where Q is a positive integer less than or equal to P; encrypting the plaintext to be encrypted according to the Q second zero ciphertexts to obtain the second ciphertext. The embodiment of the present application can improve the efficiency of homomorphic encryption.

The present invention provides a data storage encryption method based on a hardware password card, which can be applied to the fields of database technology and data security technology. The method comprises: in response to a data storage request of a user, determining the data to be stored and a first target data table from the data storage request; acquiring an encryption switch corresponding to the first target data table and an encryption algorithm for encrypting the data to be stored from a database table-level storage space; when the encryption switch is in an on state, acquiring storage location information of an encryption key in a hardware password card from table encryption data related to the first target data table; acquiring an encryption key based on the storage location information using the hardware password card; performing an encryption operation on the data to be stored based on the encryption algorithm, the encryption key and the encryption random value using the hardware password card to obtain encrypted data; reconstructing the storage location information of the encrypted data and the encryption key to obtain stored data.

The present invention relates to the technical field of information security and image processing, and proposes a color image encryption and decryption method. The method can quickly complete the encryption and decryption of various color images, and the encrypted ciphertext image destroys the structure of the plaintext image, and can effectively resist the image pixel frequency statistical attack. The color image encryption method first constructs a color key image to control the encryption algorithm and the decryption algorithm; secondly, the plaintext color image is preprocessed by using a Logistic chaotic system, and then in each channel of the plaintext image, double pixels are used as groups to search for ciphertext pixels in the rectangle formed by the key image, and finally the ciphertext color image is output. The method has high encryption efficiency and strong practicality, can effectively resist frequency statistical attacks and selected plaintext attacks, and has a good encryption effect. The present invention can be applied to the generation, storage, transmission and other scenes of color images to effectively protect their confidentiality.

The present invention relates to the field of data security protection technology, and specifically to a data security protection method for a cloud platform. The method first divides the data information of the acquired user into multiple sensitivity levels; determines the information missing degree of the user at the current sensitivity level, and constructs a level vector; analyzes the information missing degree and level vector of different users at the sensitivity level with other users, and determines the level correlation of users at the current sensitivity level; classifies users to obtain multiple user sets; determines the necessity of adjusting the current sensitivity level according to the difference in level correlation between two users in the user set, and selects the best sensitivity level from multiple sensitivity levels; encrypts the corresponding relationship between levels associated with the best sensitivity level. The present invention improves the encryption security of data information by analyzing and encrypting the correlation between sensitive data.

The invention discloses an application data management method and device, equipment, a medium and a program product, and relates to the technical field of computers. The method comprises the following steps: in a process of compiling an application source code, encrypting an original text key according to an encryption strategy corresponding to annotation information to obtain a ciphertext key; after the application source code compilation is finished, compiled codes are obtained; in the process of running the first application based on the compiled code, decrypting the ciphertext key to obtain an original text key; encrypting to-be-encrypted data in the first application based on the original text key to obtain ciphertext data; or decrypting the to-be-decrypted data in the first application based on the original text key to obtain the original text data. Due to the fact that the compiled code replaces the original text key by importing the ciphertext key, the compiled code cannot be obtained through reverse engineering to be analyzed to obtain the original text key, the leakage risk of the original text key is greatly reduced, the encrypted application data cannot be decrypted through the original text key, and the safety of the application data is improved.

The present invention discloses a remote automated operation and maintenance method and system for a big data storage server, which relates to the field of automated operation and maintenance technology, and includes: determining a list of servers to be operated and maintained, and obtaining login key information of a target server, determining the corresponding target server using the login key information, obtaining a login fluctuation coefficient matrix, monitoring the target server, obtaining a performance fluctuation index matrix, and setting automated configuration information matching the target server based on the performance fluctuation index matrix, analyzing the performance of the target server under different conditions through the performance fluctuation index matrix, determining whether the server configuration needs to be adjusted, avoiding configuration failure or configuration mismatch due to different performance of the system or hardware of the big data storage server and different resource utilization of the same system or hardware, and more effectively allocating and managing server resources to avoid resource waste.

The invention provides a data encryption method and device, a medium, electronic equipment and a program product. The method comprises the steps of obtaining a to-be-encrypted target file; symmetrically encrypting the target file by adopting a first key to obtain an encrypted file body; performing asymmetric encryption on the first secret key according to a first public key to generate a first authorization string; the first public key is a public key of an authorizer; and storing or forwarding the encrypted file body carrying the first authorization string. According to the technical scheme, the target file is encrypted in a symmetric encryption mode, encryption of the target file can be completed through one-time encryption, the encryption efficiency of the target file is improved, then the first key which is subjected to symmetric encryption is encrypted in an asymmetric encryption mode, the safety of the first key is improved, and then the safety of the target file is improved.

The present invention relates to a software data encryption method based on homomorphic encryption, and specifically to the field of information security technology, including real-time acquisition of the amount of data generated by all functional modules in the target software, and storage according to the time series to obtain the data set corresponding to each functional module; equal processing of the data set of each functional module to obtain the data sequence corresponding to each functional module; calculation based on the difference between the elements in each data sequence, and based on the calculation result, the encryption label of each functional module is obtained; according to the different encryption labels of each functional module, whether to use the homomorphic encryption algorithm to encrypt and transmit the interactive data generated in real time by the functional module. In the present application, the active characteristics of the data are analyzed, and active data and inactive data are distinguished thereby, and different encryption methods are used for the data of different functional modules based on the distinction results, so as to achieve the purpose of reducing computing power overhead.

The application discloses a software development data encryption protection method and system, and relates to the technical field of data processing.The method comprises the following steps: login protection, data collection, data encryption protection, classification of software development data into ordinary development data and sensitive development data, encryption evaluation, security evaluation of key one and key two by using an encryption security score algorithm, encryption timeliness evaluation, key replacement sorting, sorting of all unqualified key one and key two, replacement according to the order, and data storage.The method has the effects of classifying and encrypting ordinary and sensitive development data, optimizing calculation resources by using differentiated encryption strength, improving encryption efficiency, dynamically adjusting the key rotation strategy by comprehensively considering the length, complexity, use time and security events of the key in combination with the encryption security score algorithm and the timeliness evaluation algorithm, ensuring the orderly and efficient key management, and reducing the security risk of software development data.