28 results about "Data decryption" patented technology

A method of generating at least one encryption key (130) for encrypting data (142), a method of data transmission between at least two communication systems (136, 138), a method of encrypting data (142) and a method of decrypting encrypted data (144) are disclosed. Further disclosed are an encryption key generating device (110), a system (134), a data encryption system (148) and a data decryption system (150). The method of generating at least one encryption key (130) for encrypting data (142), specifically for data transmission over an insecure channel, comprises:blending at least two materials (114) according to at least one item of blending information by using a blending device (112), thereby generating at least one blend (120);ii. detecting at least one material property (124) of the blend (120) by using at least one detector (126); andiii. transforming the material property (124) into the encryption key (130) by using at least one data processing device (132) configured for applying at least one transformation algorithm to the material property (124).

The application discloses an encryption method and system for communication data of an Internet of Things, and belongs to the technical field of communication link encryption. In order to solve the problem that a receiving node cannot synchronously generate a corresponding decryption key, and finally causes large-area data decryption failure and communication interruption, the application comprises the following steps: acquiring a receiving time interval sequence of historical data packets between a communication node and a receiving node, and a channel state index of a current communication link; constructing an initial key matrix; acquiring data payload to be sent by the communication node, and acquiring a communication error rate of the current communication link, and updating the communication error rate of the current communication link; performing a cyclic shift operation on the initial key matrix according to a key update step, to obtain a target encryption matrix; performing encryption processing on the data payload based on the target encryption matrix, to obtain encrypted payload, and sending the encrypted payload to the receiving node; and the application improves the encryption security, communication reliability and device endurance of communication data in a low-power weak-network Internet of Things scene.

This invention discloses a blockchain-based hierarchical sharing method for medical data. This method encrypts files with monotonic access structures according to different levels of sensitivity. The secret value is passed upwards through a secret value sharing mechanism, transferring the secret value of the low-sensitivity ciphertext to the high-sensitivity ciphertext. During the data decryption stage, a rapid comparison is performed to find the file with the highest sensitivity that the user can satisfy, and a pre-decryption is performed. This makes it easier to decrypt sensitive files in the file set, improving access control and effectively reducing the number of decryption steps in the medical data sharing process. This truly achieves multi-level attribute data sharing while ensuring privacy and security.

This invention discloses a method for commercial encryption protection and multi-system security integration in a power demand-side management system. The method involves: constructing a business-driven layered commercial encryption protection strategy and configuring differentiated commercial encryption protection schemes; building a three-tiered integration architecture consisting of a core layer, an interface layer, and a security layer; and achieving deep integration of commercial encryption protection and the integration process. During multi-system data interaction, interface authentication, encrypted data transmission, data decryption and verification, and storage and log protection are completed sequentially, with commercial encryption technology embedded throughout to ensure security. This invention offers advantages such as compliant commercial encryption protection, standardized and efficient multi-system integration, end-to-end security protection coverage, and deep integration with business needs.

This invention relates to the field of secure communication technology, and specifically discloses a data encryption transmission method and system applied to an all-in-one machine simulation model. The method includes: acquiring dynamic data of the all-in-one machine simulation model in real time; dividing the data to be transmitted into blocks based on the original encryption density range of all nodes in the dynamic parameter tree of the all-in-one machine simulation model constructed using the dynamic data, to obtain a set of data blocks to be transmitted; encrypting the set of data blocks to be transmitted separately based on the multi-dimensional encryption-related features and block division rules of the set of data blocks to be transmitted, to obtain a set of encrypted data blocks; managing the set of encrypted data blocks based on a multi-level key system to obtain secure management data; transmitting the secure management data to the receiving end based on a dual-link communication method, and performing multi-node collaborative verification at the receiving end through a blockchain node network to obtain the data decryption verification result. This invention can improve the security, anti-attack capability, and real-time performance of all-in-one machine simulation data transmission based on secure communication technology, preventing the data to be transmitted from being tampered with, stolen, or illegally accessed.

This application provides a method and apparatus for data security management of mobile storage devices. The method includes: sending a session request to a terminal device; receiving an identity certificate and identity challenge returned by the terminal device; after verifying the identity certificate returned by the terminal device, obtaining the current location and timestamp; sending the current location and timestamp to a location service platform for verification; and receiving a verification credential returned by the location service platform. The verification credential is a credential for verifying the current location and timestamp. The method responds to the identity challenge from the terminal device and submits the verification credential to the terminal device; after the terminal device obtains an authorization token from a policy server based on the verification credential and generates a dynamic key fragment, it receives the dynamic key fragment. A data decryption key is generated based on the dynamic key fragment to decrypt the file encryption key and decrypt user data, solving the problem of data leakage caused by long-term access granted with a single authorization.

This application provides a network data encryption method, a network data decryption method, and an electronic device, which can be applied in the field of network security technology. The network data encryption method includes: a first back-end processing module encrypting the message data to be sent to obtain initial data, and sending the initial data to a virtual switch running in the kernel space or user space of the host; the first back-end processing module and the virtual switch communicate via shared memory or shared kernel path; the virtual switch determines the target virtual machine corresponding to the message data and sends the initial data to a second back-end processing module corresponding to the target virtual machine; the second back-end processing module and the virtual switch communicate via shared memory or shared kernel path.

This invention discloses a method and apparatus for communication compatibility adaptation of new and old power equipment under power grid supervision and control, relating to the field of power equipment communication technology. The method includes: pre-configuring a device protocol library, a data decryption algorithm library, a message verification rule library, and a power equipment message transmission parameter library; establishing a bidirectional communication link with both new and old power equipment; collecting and parsing the original communication data of the new equipment to determine its data type, functional requirements, collection frequency, and encryption status; retrieving the matching protocol script of the old equipment to clarify its communication protocol framework, point number definition rules, and message transmission specifications; generating new function point numbers and establishing a mapping relationship with the original data; decrypting the data and encapsulating the target message according to the old equipment specifications; performing CRC verification and format correction on the target message; and transmitting it back to the old equipment to complete communication compatibility. This invention achieves automated adaptation of new and old equipment, reduces manual intervention, lowers operation and maintenance costs, and improves the adaptability and efficiency.

Embodiments of the present application provide a data decryption method, device and equipment and a storage medium. The method comprises: obtaining a data acquisition request sent by an image forming device, reading target encrypted data corresponding to a target data address in the data acquisition request from a first storage area; calculating the target encrypted data based on a preset hash algorithm to obtain a first binary data sequence; performing a preset bit number interception process on the first data sequence to obtain a second data sequence, reading first target decryption data corresponding to the second data sequence from a second storage area, feeding back the first target decryption data to the image forming device, and storing first decryption data corresponding to a binary data sequence set within a preset bit number in the second storage area. The present scheme realizes the second data sequence based on the storage address of the target decryption data, can quickly find the required target decryption data, reduces the performance requirement for the consumable chip, and ensures the normal printing process of the consumable.

This invention discloses a cross-organizational collaborative editing method for engineering data security based on Bill of Materials (BOM). The method first involves a Trusted Institution (TA) setting global parameters and generating a master key. Participating companies register with the TA, forming a consortium blockchain and deploying smart contracts. Next, the company initiating the collaborative project acts as the lead company, selecting a Service Provider Corporation (SPC). The SPC's public key is bound to a secret shared structure, and the lead company completes data encryption and encapsulation. Then, during the data sharing phase, two processes are included: data decryption and encrypted update. When the service provider company makes modifications, a joint approval process is triggered. Finally, the service provider company can perform multi-version access and trace the behavior when retrieving data entities. This invention effectively solves three core problems faced in cross-organizational collaborative manufacturing scenarios: difficulty in fine-grained sharing, uncontrollable modification authorization, and difficulty in defining and tracing operational responsibility.

This application relates to a data encryption method, a data decryption method, and a data processing method, belonging to the field of communication technology. The data encryption method includes obtaining the public key of the target recipient from a first sticker card; encrypting the target plaintext according to the recipient's public key to obtain the target ciphertext; and sending the target ciphertext to the target recipient. Using the above method helps to improve data security.

The application discloses a kind of intelligent self-adapting power supply and encrypted data transmission USB device and method, it is related to USB technical field, including USB device, USB device is provided with USB equipment interface plug and several USB interfaces, USB device is composed of intelligent power supply module, encrypted data transmission module, equipment identification and connection management module and central control module;Intelligent power supply module includes voltage current detection unit, power supply strategy decision unit and adjustable power output unit;Encrypted data transmission module includes data encryption unit, data decryption unit and security key management unit;Equipment identification and connection management module includes equipment identity authentication unit and connection state monitoring unit;Through intelligent self-adapting power supply technology and hybrid encryption and multi-factor identity authentication data security transmission mechanism, the problems existing in the prior art can be effectively solved.

This invention discloses a method for privacy-preserving computation and sharing of biological sample data based on a Trusted Execution Environment (TEE), belonging to the field of bioinformation security and privacy computation. The method includes: standardized preprocessing of multi-source biological data to generate integrity verification values; constructing a three-level hierarchical key system based on a TEE to perform three-dimensional encrypted fragmentation and distributed storage of the biological data; completing data decryption, integrity verification, and privacy computation within a TEE-isolated enclave, ensuring that the data remains in plaintext throughout the secure environment; outputting the computation results after anonymization and synchronizing logs to a consortium blockchain for auditing; and destroying temporary keys and data after the task is completed. This invention ensures data integrity, key security, and result anonymization. Combining hardware isolation and domestic cryptographic technology, it achieves "usable but invisible, controllable and auditable" biological data, solving the problems of privacy leakage, insufficient compliance, and low computational efficiency in cross-institutional sharing. It is suitable for collaborative scenarios involving highly sensitive data in biomedicine, medical research, and other fields.

The application discloses a data re-encryption, data decryption method and device. The data re-encryption method comprises the following steps: obtaining original ciphertext; wherein the original ciphertext is obtained by encrypting original data based on a data owner identifier and a public key of a key generation center; performing ciphertext conversion processing on the original ciphertext by using a re-encryption key to obtain re-encryption ciphertext; wherein the re-encryption key is obtained based on the data owner identifier, a data requester identifier and a first private key of the key generation center; and sending the re-encryption ciphertext to the data requester; wherein the data requester is used for performing decryption processing on the re-encryption ciphertext based on a second private key of the data requester to obtain the original data; and the second private key is obtained based on the data requester identifier and the first private key.

The embodiment of the application provides a data decryption method, device and equipment and a storage medium, the method comprises the following steps: in the case that the host chip receives the data acquisition request sent by the external device, the first encrypted data is obtained by querying the first storage information table arranged in the host chip based on the target data identifier in the data acquisition request through the host chip; the first intermediate data is obtained by decrypting the first encrypted data based on the set first decryption algorithm through the host chip, and the first intermediate data and the target data identifier are transmitted to the first slave chip group; the first target encrypted data is obtained by performing the first preset decryption processing on the other encrypted data corresponding to the first intermediate data and the target data identifier through the first slave chip group, and the first target encrypted data is transmitted to the host chip; the first target decryption data is obtained by decrypting the first target encrypted data based on the set second decryption algorithm through the host chip.

A media data decryption method includes: obtaining a media data encryption package, wherein the media data encryption package is obtained by performing pixel rearrangement encryption on original media data based on position index data, and the position index data correspond to one or more structural parameters of a display screen; decrypting the media data encryption package to obtain the position rearrangement index data and media data to be decrypted; configuring a programmable logic circuit of a control system of the display screen in a media data play terminal based on the position rearrangement index data; and decrypting the media data to be decrypted based on the configured programmable logic circuit to obtain decrypted media data.

This system simplifies the device configuration compared to backing up encrypted encryption key data, which is unique to a circuit board removed from the device, to another circuit board within the same device. [Solution] The information processing device has a processor, and if, after replacing the first board with the second board, the processor fails to decrypt the first encrypted data stored in the memory device transferred from the first board to the second board, the processor obtains first encryption key data, which is encrypted using the first encryption key unique to the first board, from an external device connected via another terminal, and decrypts the first encrypted data using the first encryption key decrypted from the obtained first encryption key data.

An information processing apparatus includes a processor configured to: in a case where, after replacement of a first board with a second board, first encrypted data stored in a storage device taken over from the first board to the second board fails to be decrypted, acquire, from an external device connected via a different terminal, first encryption key data obtained by encrypting a first encryption key unique to the first board; and decrypt the first encrypted data by using the first encryption key decrypted from the acquired first encryption key data.

The application discloses a method based on distributed sensitive data desensitization, encryption, decryption and auditing, which realizes desensitization, encryption and decryption of sensitive data from aspects of architecture, key technology use and the like; realizes desensitization, encryption and decryption of sensitive data on the premise that the running efficiency of an existing application system is not greatly influenced; and does not have any influence on the use of non-decrypted data. Through a method of two keys, sensitive data is desensitized and encrypted synchronously and efficiently; through a method of two keys, decryption data only needs to be simply analyzed and modified in an SQL part of an existing application system source code, so that decryption of the data is completed; through authorization and limitation of a decryption condition, a workflow of application and approval of an encrypted data manager by a decrypter or a decryption device is realized; control of the data decryption is realized; and at the same time of the data decryption, decrypted data log records are distributedly generated and used for decrypted data analysis and auditing.

This invention discloses a method and system for power distribution automation protection based on quantum encryption, relating to the field of quantum secure communication applications. The method includes: strengthening the quantum security service platform with built-in isolation and redundancy deployment of key node equipment; establishing a first secure communication channel between the power distribution master station and the quantum security service platform, and a second secure communication channel between the power distribution master station and the power distribution substation. The first secure communication channel includes a secure access gateway. If a power distribution terminal initiates a data request, a session key is obtained through the quantum security service platform; a quantum key is obtained based on the session key for data encryption; the session key is then injected into the quantum key injection substation through the second secure communication channel; the data is decrypted through the secure access gateway; and the decrypted business data is sent to the power distribution master station. This invention enhances the security of the quantum encryption platform, ensures stable system operation, improves the security level of communication with local governments, and enables localized management.

The present application discloses a data encryption method, a data decryption method, a data encryption and decryption system, an electronic device, and a medium. The encryption method comprises the steps of: receiving an encryption request from a user—the encryption request includes plaintext data to be encrypted—loading the plaintext data into a memory of an electronic device; calling an encryption device to encrypt the plaintext data based on an asymmetric encryption algorithm to obtain ciphertext data—a pair of public and private keys are generated from the asymmetric encryption algorithm, and the public key is used to encrypt the plaintext data—determining a first storage path for the plaintext data and a second storage path for the ciphertext data; storing the ciphertext data in the second storage path; and deleting the plaintext data from the first storage path.

The invention discloses an intelligent traffic service processing method based on a block chain distributed oracle machine, and relates to the technical field of intelligent traffic services based on a block chain and a distributed oracle machine, and the method comprises the steps: collecting original traffic data, transmitting the original traffic data to a block chain network through a distributed oracle machine network, and carrying out the encryption storage of the original traffic data, obtaining encrypted traffic data; generating prompt word information according to the encrypted traffic data and the user demand information, and encrypting and storing the prompt word information to a block chain network to obtain block chain prompt word data; acquiring encrypted traffic data and block chain cue word data from a block chain network, decrypting the encrypted traffic data and the block chain cue word data, and performing reasoning calculation in combination with cue word information to obtain model reasoning result data; and automatically executing the intelligent traffic service according to the model reasoning result data to obtain transaction execution result data. Decentralization can be carried out to improve system stability, data privacy security is enhanced, model output accuracy is improved, and transaction fairness and justice are guaranteed through the smart contract.

A kind of outsourcing deep learning system supporting privacy protection, data encryption module and data decryption module carry out data encryption and decryption according to the public key and private key in the generated public-private key pair respectively, data obfuscation module carries out desensitization processing to the decryption information from data decryption module and then outputs desensitized data to neural network calculation module, neural network calculation module carries out training and testing of neural network model according to desensitized data, obtains obfuscated gradient parameter in the process of neural network back propagation and returns to data obfuscation module for synchronous update, improves the convergence speed and accuracy of the whole training system.The present application realizes data privacy protection in the trusted execution environment, outsources to cloud server for efficient deep learning model training under the condition of guaranteeing integrity and confidentiality, so that users can confuse and disturb in the feasible execution environment, share desensitized data, and the original data and confusion process are invisible to attackers.

This invention discloses a non-repudiation cross-chain collaborative method and apparatus for data transactions based on a point-to-point data transmission channel, belonging to the field of information technology. It comprises five stages: gateway node relay identity registration, data node relay identity registration, data negotiation, data transmission, and data confirmation. Specifically: In the gateway node relay identity registration stage, the relay identity generated by the gateway node is stored on the relay chain, granting the right to forward messages across chains between the relay chain and the local chain; in the data node relay identity registration stage, the relay identity generated by the data node is stored on the relay chain, granting the right to conduct cross-chain data transactions through the relay chain; in the data negotiation stage, the data transaction content and point-to-point transmission connection information are negotiated through a designed relay contract and the relay chain's cross-chain mechanism; in the data transmission stage, encrypted data is transmitted through point-to-point transmission; and in the data confirmation stage, the data transaction is verified through a two-way non-repudiation confirmation contract on the relay chain, and data rights are transferred (i.e., data decryption) while achieving non-repudiation proof of the transaction. This invention can reduce the resource consumption of cross-chain activities, alleviate the value silo problem of blockchain in data transaction scenarios, and especially solve the difficulties of transaction non-repudiation and transaction traceability in data transaction scenarios.

The application discloses a data transmission method and device based on a low-power Bluetooth device, and a medium, relates to the technical field of low-power Bluetooth wireless communication, and comprises the following steps: inputting transmission state information into a target host device, and performing data decryption and integrity check to generate transmission result feedback information. By inputting Bluetooth session information into a scheduling engine and performing real-time multi-dimensional link feature perception, channel quality assessment and machine learning prediction, then combining a feedback mechanism to optimize transmission strategy and resource allocation, generating a link optimization configuration file, and then using the link optimization configuration file for dynamic multi-level block marking, intelligent priority sorting and batch adjustment to generate a Bluetooth transmission queue, efficient, reliable and intelligent transmission of data of the low-power Bluetooth device in a high-density, multi-node and dynamically changing environment is realized, and meanwhile, the resource utilization rate is optimized, the transmission delay is reduced, and the data integrity and communication stability are improved.

The present disclosure provides a method for generating a key, a method for data encryption and a method for data decryption. The specific implementation scheme is as follows: the method for generating a key comprises: calculating a first original key in a preset key pair by using a preset key derivation algorithm to generate a first derived key for data encryption; calculating a second original key in the preset key pair by using the preset key derivation algorithm to generate a second derived key; encrypting preset data by using the first derived key and an encryption algorithm to generate first data; and calculating the first data by using the second derived key to generate a first message authentication code. According to the scheme of the present disclosure, the security of the encryption and decryption keys used in the data encryption and decryption process can be improved, thereby further improving the security of the encryption and decryption process.

This invention provides a method for resuming processing after a pause in the encryption / decryption process of large amounts of data. First, a database index containing a hierarchical directory structure is constructed based on the target task. During processing, a bottom-up strategy is used to extract the current processing directory, and after the encryption / decryption loop of a single file is closed, the synchronization status of the file count variable is updated using database transactions. Upon capturing an interrupt signal, the system detects the memory stream buffer and forces a delayed response until the current single file completes its disk write-back operation and safely releases the underlying file handle, thereby locking the processing boundary and solidifying the paused state. When the program resumes execution, a Boolean error-proofing feature bit is used to verify the data write-to-disk status and calculate the effective skip amount. By performing an index span offset operation on the file traversal sequence, already processed files are precisely skipped, and subsequent tasks continue. This invention combines memory mapping, connection pooling, and multi-process concurrency techniques to effectively solve the problems of resource congestion and progress loss during massive data processing while ensuring the integrity of single files.