30results about How to "Improve encryption efficiency" patented technology

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 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 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 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 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 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 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 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.

The invention discloses an encryption method, system and device based on RSA artificial intelligence and a storage medium, belongs to the technical field of encryption, and solves the technical problems that a traditional encryption method is low in efficiency when processing a large amount of industrial internet data and is difficult to deal with complex and variable security threats. The method comprises the steps of performing feature extraction on to-be-encrypted data by using a machine learning algorithm; a machine learning algorithm and an RSA encryption algorithm are combined to generate a self-adaptive encryption strategy; performing intelligent generation and management on the RSA key by using an artificial intelligence technology; performing encryption processing on the to-be-encrypted data by using the self-adaptive encryption strategy to obtain encrypted data; a secure transmission protocol is used to ensure that the encrypted data is not leaked or tampered in the transmission process, and a secure communication protocol and technology are adopted to ensure the security of the encrypted data in network transmission; before storage, RSA encryption processing is carried out, and proper access control and encryption measures are taken; and the access of the stored encrypted data is subjected to refined management in combination with an artificial intelligence technology.

This invention discloses a method for local encryption of vector maps. Based on the original vector map data, a G-tree spatial index is constructed to obtain a coordinate set. A fractional-order five-dimensional hyperchaotic system based on a dual-memristor electronic circuit is established. From the coordinate set, the coordinate sequence to be encrypted is extracted and initial parameters are generated: first, random salt values ​​are generated, then a hash chain is constructed and the initial state variables of the chaotic system are calculated. The initial state variables of the chaotic system are input into the fractional-order five-dimensional hyperchaotic system, and the chaotic sequence is iteratively solved. The extracted coordinate sequence is converted into a binary sequence. Each coordinate point in the binary sequence is combined with the dechaotic sequence and subjected to an XOR shift operation to obtain a scrambled and encrypted binary sequence. The binary encrypted sequence is then reconstructed to obtain a reconstructed coordinate set, i.e., the encrypted vector map. This invention can improve encryption efficiency, ensure encryption strength, and avoid redundant encryption of non-sensitive areas.

The application discloses a data file encryption method and device, a computing device and a storage medium. The method comprises the following steps: receiving a file uploading request of a data file, storing a plurality of data fragments of the data file in a plurality of data nodes in a distributed storage system respectively; obtaining load information of a data node in which any data fragment of the data file is stored; determining an object of performing encryption processing according to the load information of the data node in which the data fragment is stored; and if it is determined that the object of performing encryption processing is the data node in which the data fragment is stored, controlling the data node to perform encryption processing on the data fragment. Through the above method, only a part of computing resources needs to be dynamically reserved in the data node, and the data node can complete the encryption processing of the data fragment when the load of the data node is low, without loading the data fragment to an external computing node for encryption processing, so that network bandwidth resources can be saved, and the situation that the data node has too large throughput can be avoided.

The present invention provides a multi-image batch encryption method based on counter mode, comprising the following steps: using the session key and round key of multiple plaintext images to extract the initial state of the chaotic system respectively; reading and calculating four plaintext images in the multiple plaintext images and obtaining the maximum row and column value; using the initial state of the diffusion chaotic system to generate H max × W max The diffusion key matrix of the initial vector chaos system is obtained by using the initial state of the initial vector chaos system. W max The initial vector key is obtained by scrambling the initial state of the chaotic system. W max and H max The key stream for row and column scrambling is used; four threads are started to encrypt four images synchronously to obtain a ciphertext image; the round key is updated, and the above steps are repeated until the encryption of multiple plaintext images to be encrypted is completed. The present invention takes into account the encryption efficiency and strength in the scenario of mass image encryption, and does not increase the burden of key transmission, and has high practicality.

The present invention relates to the technical field of fire protection Internet of Things security communication, and discloses a fire protection Internet of Things security communication method based on random challenges and dynamic round keys. During device authentication, both the device and the platform use a low-overhead asymmetric encryption method to encrypt and transmit authentication data, apply an HMAC summary method to ensure message integrity, introduce a physical unclonable function (PUF) in the authentication process, and the platform randomly selects a challenge from a stored challenge response set for authentication. The device generates a unique device response through the random challenge of the corresponding platform, thereby enhancing anti-counterfeiting capability. The device and the platform use a round key mechanism to encrypt and transmit business data using a dynamic key, thereby improving encryption efficiency and security. Compared with traditional solutions, the technical solution has excellent performance in terms of security, energy consumption and efficiency, is suitable for low-power devices in a fire protection Internet of Things environment, reduces resource consumption, and greatly improves communication efficiency while ensuring system security.

The invention provides an Internet of Things data transmission method and device based on an anti-quantum encryption technology, and relates to the technical field of data encryption, and the method comprises the steps: sending a certificate request to a server; receiving certificate data sent by the server; analyzing the certificate data, generating a random number R1, generating a ciphertext C1 according to the random number R1, and generating a random number K '; sending the ciphertext C1 and the random number K'to the server; and receiving feedback data sent by the server, decrypting the feedback data to obtain the random number R2, and obtaining the session key pair (R1, R2) according to the random number R1 and the random number R2. And encrypting the data through certificate data according to the random number R1, and performing encryption and decryption in a manner that the random number R1 generated by the client and the random number R2 generated by the server jointly form a session key pair (R1, R2), so that the encryption security and the encryption efficiency are improved.

The present invention provides a lightweight autonomous and controllable IoT security access method, terminal and storage medium, the method includes: S1. The device to be accessed requests to access the terminal intranet, and the device to be accessed performs multi-factor identity authentication through the network access authentication module and performs network access authentication; S2. After the device to be accessed is successfully authenticated, the encryption chip creates a thread pool; S3. Before data interaction, the sent data message is encrypted by the sub-thread in the thread pool using the national secret algorithm, which is used to strengthen the access terminal's ability to resist active and passive attacks; S4. The encrypted data message is sent to a bidirectional FIFO isolation component after adding a fixed frame header and a fixed frame tail through the interactive gateway, and is decrypted after matching the fixed frame header and checking the integrity of the fixed frame tail. The device to be accessed accesses the terminal intranet to perform data security interaction. The present invention can ensure the security and privacy of data transmission and improve the ability to resist active and passive attacks.

The present invention relates to the technical field of electric power data collection with encryption function, and discloses an electric power data collection terminal and method with encryption function. By combining environmental data and equipment status, this encryption process enhances the security and adaptability of data encryption. The input of environmental and equipment data ensures that the encryption results are different each time, avoiding the security risks brought by static data sources. The seed generation formula reasonably combines these data to ensure that the seeds have sufficient randomness and reduce the risk of brute force cracking. The key generation strategy generates a unique key through the seed, which improves the system's anti-attack ability. The key matrix and random number generation strategy improve the unpredictability of the encryption algorithm. Dynamically update the encryption matrix to prevent it from being cracked during long-term use. The entire process ensures comprehensive protection of data during collection, encryption and transmission, and effectively prevents data from being tampered with or stolen.

The invention discloses a digital collection encryption method and device, a storage medium and electronic equipment, and relates to the field of financial science and technology and the field of information security. The method comprises the steps that a target key is generated according to a first algorithm, and the first algorithm is used for generating a random encryption key; a second algorithm is adopted to carry out thinning processing and target processing on the initial digital collection to obtain a first digital collection, the second algorithm is used for simplifying linear features or paths, the thinning processing is used for filtering redundant data in the data, and the target processing is used for reducing the size of the data in a format conversion mode or a data compression mode; and encrypting the first digital collection according to the target key to obtain a target digital collection. The technical problems of information redundancy and low encryption efficiency of a traditional digital collection encryption method are solved.

The present disclosure provides a data encoding method, device, electronic device and storage medium applied to a homomorphic encryption system, wherein the method comprises: obtaining multiple groups of original data to be subjected to homomorphic operation, and determining, for each group of the original data, the encoding range and scaling ratio corresponding to the original data; encoding the original data based on the encoding range and scaling ratio corresponding to the original data to obtain encoded data corresponding to the original data; the value of the encoded data is less than or equal to the maximum value of the encoding range; for the encoded data corresponding to each group of the original data, merging the encoded data corresponding to the group of original data to obtain target data corresponding to the group of original data; the target data supports homomorphic operation properties; homomorphically encrypting the target data corresponding to each of the multiple groups of original data to obtain ciphertext data, and the ciphertext data is used to perform homomorphic operation.

The invention discloses a virtual machine data generation method based on program data and a terminal, and the method comprises the steps: obtaining character string data and constant data in to-be-processed program data, generating corresponding virtual machine data for the character string data and the constant data by using a character string virtual machine and a constant virtual machine respectively, and generating the virtual machine data according to the generated virtual machine data. If the analysis output result of the virtual machine data is the same as the corresponding original data, replacement is carried out. In this way, a complete hardware environment and an operating system do not need to be simulated in the virtualization process, and the encryption efficiency is improved; moreover, through a local sensitive data encryption mode, the encryption flexibility can be improved.

The invention discloses a multi-image scrambling method based on a whack-a-mole model, and belongs to the field of image security. In many fields, a large number of images are generated every day. In order to protect multi-image information from being stolen and improve the security and efficiency of image content network transmission, the invention designs a multi-image scrambling method based on a whack-a-mole model. The method comprises the following steps: firstly, stacking k original images together to form a three-dimensional matrix; secondly, generating three chaotic sequences by utilizing Logistic mapping, and performing integer processing and matrix processing; thirdly, establishing a whack model for image scrambling, and finally, performing scrambling operation on the three-dimensional matrix by adopting the established whack model to generate k encrypted images. Experimental results show that the new method achieves a good effect in the aspect of security, and is beneficial to improving the security of image content network transmission.

This invention relates to the field of image encryption technology and addresses the problems of slow encryption speed and weak resistance to attacks in existing image encryption methods. The image encryption method described in this invention uses a ternary fractional discrete chaotic neural network system to generate a chaotic sequence related to the plaintext. A fractal sorting and scrambling process is then performed on the original image using a fractal model approach. To achieve better results, a double scrambling process is applied to both rows and columns. Finally, a synchronous scrambling and diffusion operation is performed according to the Hilbert curve traversal order, which can simultaneously change the position and size of pixel values. This method is the first to apply fractal thinking to the scrambling process in encryption, achieving good scrambling results. The synchronous scrambling and diffusion operation further improves the encryption efficiency to a certain extent.

The invention relates to the field of data security, and provides a data processing method, device and equipment and a storage medium, the method is applied to a plurality of participants, a first participant is used for encoding original gradient data of a floating point type of current iteration training into encoding gradient data of an integer type, and performing multi-level encryption on the encoding gradient data, the encryption efficiency is improved, the bandwidth consumption is reduced, the generated second encryption gradient is sent to the adjacent second participant for gradient aggregation, and the model parameters are updated according to the target aggregation gradient obtained by aggregation of the last second participant; each second participant except the first participant in the federated learning task performs gradient aggregation and encryption based on the dense state gradient data of the previous participant and the first encryption gradient of the second participant to obtain a target aggregation gradient, so that the privacy of the gradient data is protected, the communication overhead is reduced, and the communication efficiency is improved. And computing resources occupied during aggregation and the attack risk are shared, so that the performance bottleneck of federated learning is reduced.

The application discloses a video stream processing method based on a SIM card, an electronic device, a storage medium and a program product. The method is applied to a first terminal and comprises the following steps: obtaining a video frame to be encrypted in a video stream, determining adaptive block parameters based on a processing performance index of the video frame; performing block processing on the video frame to be encrypted based on the adaptive block parameters, so as to obtain a plurality of SIM card communication protocol transmission data blocks; sequentially transmitting the plurality of SIM card communication protocol transmission data blocks to a SIM card based on a pipeline transmission strategy, and sequentially performing encryption processing on the plurality of SIM card communication protocol transmission data blocks by the SIM card; and sequentially receiving encrypted data blocks fed back by the SIM card; wherein, in the process of transmitting an (n+1)th SIM card communication protocol transmission data block to the SIM card, an encrypted data block corresponding to an nth SIM card communication protocol transmission data block fed back by the SIM card is received, and the encryption of the video stream is realized.

A fast image encryption method based on chaos and pseudo wavelet transform belongs to the field of information encryption. As an important information carrier, images occupy a very important position in various fields. With the increasing image clarity and data volume, the encryption efficiency of images becomes crucial. In order to ensure the real-time and reliability of image encryption, inspired by image wavelet transform, the present invention proposes an image encryption method based on chaos and pseudo wavelet transform. First, the original image is inversely transformed by wavelet transform and divided into four sub-bands; secondly, the low-frequency sub-band components are locally scrambled and XOR diffusion is performed using a chaotic system; finally, the matrix is ​​reconstructed by inverse pseudo wavelet transform to obtain an encrypted image. Experimental results and algorithm analysis show that this method only needs to process part of the data in the original image to achieve a good encryption effect, and avoids the problem of precision loss in traditional frequency domain transform, with good encryption effect and high security.

This invention discloses a data query method, system, and device for achieving attribute revocation awareness, comprising: receiving a query trapdoor sent by a data user; sending the query trapdoor to an edge node; wherein the edge node is used to determine the intersection of the index of the target attribute and the valid row index of the ciphertext based on the attribute revocation list synchronized by a trusted institution, and to send the index intersection and LSSS linear coefficients to a cloud server when the attribute revocation deadline of the target attribute is valid; performing linear verification of the LSSS matrix based on the index intersection, LSSS linear coefficients, attribute trapdoor components, keyword trapdoor components, and keywords to determine the query ciphertext corresponding to the query trapdoor; and sending the query ciphertext to the data user. This method improves access control privacy, while eliminating insecure access to revoked attributes, thereby improving data security and access efficiency.

The present application relates to the technical field of data processing, and more particularly to a multi-territory data compliance adaptation engine intelligent system. The system comprises: an information collection module for collecting territorial information and user information; an information extraction module comprising a picture classification unit and a text extraction unit; a feature analysis module comprising a picture screening unit for screening pictures to be encrypted and a paragraph analysis unit for determining sensitive information; an information processing module for determining whether non-sensitive information is encrypted or updating an encrypted database; and an encryption module comprising a first encryption unit for encrypting pictures to be encrypted and sensitive information, and a second encryption unit for encrypting non-sensitive information determined to be encrypted. The present application utilizes the above-mentioned modules to cooperate with each other, effectively improving the information recognition efficiency, and further improving the accuracy of the multi-territory data compliance adaptation engine intelligent system.