8results about How to "Improve encryption efficiency" patented technology

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.

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.

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 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.

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.