8results about How to "Prevent malicious attacks" patented technology

The application is a kind of automation testing and application fluency testing method based on control matching, relating to the field of Android end automation testing.The application method comprises: setting a test script containing behavior simulation and fluency determination in advance, reading the corresponding test script after the Android end receives a test command; acquiring interface control structure positioning target control, executing simulation operation; starting timing after each simulation operation, and acquiring all control elements of the current interface when reaching the set time threshold, judging whether the interface is loaded or not in combination with the interface structure information recorded in the fluency determination script; obtaining application fluency determination result according to the interface loading condition at different time thresholds and returning to the server end.The application does not need to acquire ROOT permission, does not need to connect PC end for testing, is safer, is more convenient to use, reduces the adaptation cost, and is higher in testing accuracy and testing speed.

The application provides a railway track traffic control management method and system, and relates to the technical field of railway track traffic control.The method comprises the following steps: establishing a time synchronization network based on a railway NTP protocol; using a colored Petri net model to perform vulnerability state reachability analysis on an NTP protocol authentication process based on a trusted certificate, and judging whether the current protocol has vulnerability; determining a first dynamic key and a second dynamic key according to key parameters of the NTP protocol authentication process; performing verification according to the first dynamic key and the second dynamic key; if the verification is passed, correcting a synchronization time signal; generating a synchronization timestamp for a target train; collecting real-time running parameters; determining a tracking interval time; and generating and issuing a control instruction.According to the application, the running state of the train can be controlled according to the communication security state and the tracking interval time, and the reliability of the real-time running parameters in time and the line utilization rate of the train are improved.

The application discloses a code updating method and device of firmware and electronic equipment. The method comprises the following steps: obtaining a target code package from a first cache area, wherein the first cache area is an area obtained by dividing a storage area of a controller; determining a first position of firmware original code in the first area and a second position corresponding to the first position in a second area; updating the firmware original code in the second area corresponding to the second position based on the target code package; in the case that the firmware original code in the second area is updated, switching to the second position of the second area to continue running and updating the firmware original code in the first area; and in the case that the firmware original code in the first area is updated, switching back to the first area to continue running according to the corresponding position. The application solves the technical problem of low updating reliability when updating the code of the firmware in the related art.

The application discloses a method for verifying a Fabric complex endorsement strategy in cross-chain, wherein the Fabric blockchain first registers an MSP list, a chain code ID and an endorsement strategy description into a cross-chain network, transmits a generated cross-chain transaction to a relay chain, then the relay chain analyzes a transaction execution result and a set of endorsement node signatures, generates an endorsement strategy interpreter, and confirms that the transaction execution result is consistent with the chain code ID registered in the cross-chain network, and if not, the verification fails, and finally the endorsement strategy interpreter verifies the set of signatures. The application can verify a complex endorsement strategy customized by a user, is friendly to a user of the Fabric network, does not need to write a verification strategy by itself, and only needs to submit an endorsement strategy description, and can prevent a user from performing malicious attacks through different chain codes.

This invention relates to the field of communication technology, specifically providing a data acquisition method, a data receiving method, an apparatus, and a data communication system. The data acquisition method is applied to a data acquisition device in a data communication system. The data acquisition device and the data receiving device in the data communication system are connected through a forward isolation gateway. The data acquisition method includes the following steps: sending a key message to the data receiving device so that the data receiving device can verify the key message; in response to receiving a key verification success byte sent by the data receiving device, acquiring the data to be transmitted; encrypting the data to be transmitted to generate an encrypted data message, and sending it to the data receiving device. Through the above methods, this application can improve the security of data acquisition through a forward isolation gateway.

The invention relates to the technical field of gyroscopes, and discloses an MEMS frequency modulation single-axis gyroscope which comprises a driving mass block and a detection mass block, and further comprises at least one electrostatic frequency modulation assembly, each electrostatic frequency modulation assembly comprises an electrostatic abutting piece, an electrostatic movable pole block and an electrostatic fixed pole plate, the static abutting piece is connected with the driving mass block or the detection mass block, the static movable pole block and the static fixed pole plate are arranged at an interval, and the static fixed pole plate is configured to be selectively electrified so as to change the static attraction force between the static movable pole block and the static fixed pole plate to enable the static movable pole block to abut against the static abutting piece. Therefore, the driving frequency of the MEMS frequency modulation single-axis gyroscope in the driving direction or the detection frequency of the MEMS frequency modulation single-axis gyroscope in the detection direction is changed. According to the MEMS frequency modulation single-axis gyroscope disclosed by the invention, the effect that the working frequency of the gyroscope chip is adjustable is realized, and the problems of poor anti-interference performance and weak safety caused by fixed frequency of the existing gyroscope chip are solved.

The invention provides a railway track traffic control management method and system, and relates to the technical field of railway track traffic control. The method comprises the following steps: establishing a time synchronization network based on an NTP protocol of a railway; carrying out vulnerability state reachability analysis on the NTP protocol authentication process based on the credible certificate by adopting a coloring Petri network model, and judging whether the current protocol has vulnerability or not; determining a first dynamic key and a second dynamic key according to key parameters of an NTP protocol authentication process; performing verification according to the first dynamic key and the second dynamic key; if the verification is passed, correcting a synchronization time signal; generating a synchronization timestamp for the target train; collecting real-time operation parameters; determining a tracking interval time; and generating and issuing a control instruction. According to the invention, the operation condition of the train can be controlled according to the communication safety condition and the tracking interval time, and the reliability of real-time operation parameters in time and the line utilization rate of the train are improved.

The application provides a hybrid blockchain method, system, device and medium based on PoW for distinguishing between large and small transactions, comprising setting a traditional blockchain as a main chain and a DAG type distributed ledger as a DAG auxiliary chain in the system, both of which together constitute a hybrid chain; a preset transaction value threshold; a node selects a main chain consensus or a DAG auxiliary chain to stabilize, publishes a new block or transaction, and lets all nodes accept and reach a consensus with it; the preset weight of each transaction is 1, and two parts including epoch sorting and unit sorting are obtained, the strict sorting of epochs and blocks is obtained through epoch sorting, the strict unit sorting of each epoch is obtained by sorting the units in each epoch according to the height, forward cumulative weight and backward cumulative weight of the units, and the full sorting of transactions of the hybrid blockchain is obtained by integrating the results of unit sorting and epoch sorting; and an efficient and safe payment platform is provided for system users.