8results about How to "Improve data transmission security" patented technology

The invention discloses a data security encryption transmission management system for an oiling machine, relates to the field of data transmission management, and is used for solving the problems of frequent priority change, reduction of data security and transmission efficiency and waste of computing resources caused by dynamic change of security priority and performance priority. The method comprises the following steps: classifying users through user vehicle fuel tank bearing capacity and user interaction frequency, respectively acquiring an oiling machine transmission data volume mean value, a transmission rate mean value, a data safety transmission probability and similarity between transmission data and original data according to different types of users, and setting an oiling machine simple algorithm and an oiling machine standard algorithm; according to the method, security algorithms matched with different types of users are determined, user allocation prediction analysis is carried out through a time sequence model, standard user allocation is dynamically adjusted, the data transmission efficiency is improved, the data transmission security is enhanced, and peak time delay is reduced.

The present invention discloses a power data transmission device based on three network operators and high-throughput satellite communication, belonging to the technical field of power data transmission. It comprises a body, a data transmission module is installed inside the body, the data transmission module comprises a main control unit, a simplified encryption unit, a public network communication core network element and a ka / ku high-throughput satellite portable station, the main control unit is connected to a temporary storage unit; the simplified encryption unit is connected to the main control unit, the public network communication core network element is connected to the main control unit and the public network base station; the ka / ku high-throughput satellite portable station is connected to the main control unit; a data recovery unit is arranged at the power production area business platform. The power data transmission device based on three network operators and high-throughput satellite communication of the present invention can realize power data transmission through the public network channel and satellite channel of the three network operators, avoid the interruption of the transmission channel, and the power data transmission has high security.

The application relates to the technical field of Internet of Things communication, and discloses a blockchain-based Internet of Things cross-network data security interaction method and system, which is characterized in that: based on the communication data of an Internet of Things sending end, the feature information of a shared Internet of Things communication sending end is used to establish a distributed communication data sharing ledger of the Internet of Things sending end, so that a high-reliability communication data tamper-proof system of the Internet of Things sending end is scientifically established based on blockchain technology; through an Internet of Things gateway, the communication data of an Internet of Things receiving end is dynamically acquired, and the feature information of a shared Internet of Things communication receiving end is combined with data processing to establish a distributed communication data sharing ledger of the Internet of Things receiving end, so that a high-reliability communication data tamper-proof system from the Internet of Things sending end to the receiving end is scientifically established based on blockchain technology, and the data transmission security of Internet of Things cross-network communication is improved.

The embodiment of the invention provides a two-layer data transmission method and device, relates to the technical field of communication networks, and is suitable for various networking scenes such as an enterprise network, a data center network and an FTTR network. The method comprises the following steps: a first PE device in an L2VPN network receives a two-layer data message through an AC; matching the target message feature of the two-layer data message with a preset ACL table item; if the target message feature is successfully matched with the preset ACL table item, encrypting the two-layer data message, and adding a control word to the two-layer data message to obtain an encrypted message, the control word indicating that the message to which the control word belongs is the encrypted message; and sending the encrypted message to the second PE device in the L2VPN network through the PW. And based on the control word carried by the two-layer data message, the second PE device decrypts the two-layer data message to obtain a decrypted message and sends the decrypted message. According to the scheme, the networking cost of the L2VPN such as the FTTR can be reduced while the data transmission security in the networking of the L2VPN such as the FTTR is improved.

The present invention discloses a data security transmission method and system based on structured tags, the method comprising: obtaining home data to be transmitted and corresponding device information; identifying multiple sensitive data parts and corresponding sensitivity levels in the home data according to a sensitive identification algorithm model corresponding to the device information; encrypting each of the sensitive data parts according to a public key corresponding to the sensitivity level to obtain an encrypted data part; combining all the encrypted data parts and the corresponding private key information based on a structured tag algorithm to obtain encrypted home data for transmission; after being received, the encrypted home data can be decrypted based on a preset structured identification rule and a corresponding private key to obtain the home data. It can be seen that the present invention can improve the pertinence and reliability of the home data encryption process, reduce encryption costs, and improve data transmission security.

The invention provides an automobile electronic control system remote firmware differential encryption upgrading method and system, and the method comprises the steps: generating a dynamic session key of a remote upgrading session through the encryption protocol feature of a current link, a session key negotiation mechanism and a unique equipment identifier of a target electronic control unit; performing differential comparison on a target firmware version to be upgraded and the current firmware version information to obtain a firmware difference data block, and performing feature encryption on the firmware difference data block by using the dynamic session key to generate an encrypted differential upgrade package; and issuing the differential upgrade package to a target electronic control unit through a secure communication link of the vehicle electronic control system, verifying a digital signature in the target electronic control unit, decrypting by using the dynamic session key to obtain a firmware difference data block, and carrying out differential recombination on the firmware difference data block and the current firmware to complete firmware upgrade. Based on the scheme, the dynamic binding of the communication link feature and the hardware identity can be realized.

The utility model discloses a high and low orbit satellite fusion multi-band compact antenna, which comprises an upper shell and a bottom shell which are connected, a plurality of support columns arranged on the top surface of the bottom shell, and a DCS low orbit satellite communication antenna, a high orbit satellite RX antenna, a high orbit satellite TX antenna, a GNSS positioning antenna, a 4G LTE antenna and a mainboard which are arranged in an accommodating cavity of the upper shell, the high-orbit satellite RX antenna, the high-orbit satellite TX antenna and the GNSS positioning antenna adopt a ceramic laminated structure; the ceramic laminated structure comprises an upper-layer ceramic substrate special for a high-orbit satellite RX antenna, a lower-layer ceramic substrate integrating a high-orbit satellite TX antenna and a GNSS positioning antenna, and a common PCB from top to bottom; a feeding point of the high-orbit satellite RX antenna and a feeding point of the GNSS positioning antenna are respectively connected with the corresponding LNA circuits on the common PCB; a feeding point of the high-orbit satellite TX antenna is connected with a PA circuit on the mainboard; and a communication mode of multi-band fusion and intelligent switching is realized.

The application discloses a face matching method, system and device based on SQL, and a storage medium, the face matching method comprises the following steps: obtaining an SQL statement, distributing a matching task corresponding to the SQL statement to a plurality of data nodes; controlling each data node to call a corresponding plug-in module, and executing the matching task according to face data in the SQL statement to obtain and output a matching result. All nodes of an MPP database cluster can call the plug-in module, the plug-in module is used to directly call a comparison function of an SDK module through an SQL query statement to realize face matching similarity calculation, without application development, so that the data processing steps and development difficulty are simplified, and the efficiency is improved; meanwhile, the delay problem of network transmission can be avoided, the data storage amount is only limited to the disk space of the MPP database, and subsequent expansion operation is facilitated; and each data node is connected with an authentication component, legality of data access is realized based on certificate verification, and data transmission security is improved.