30results about How to "Prevent illegal reading" patented technology

The invention relates to a multifunctional gateway used for a vehicle and a control method thereof. The multifunctional gateway comprises a main controller, transceivers, a 3G module and a WI-FI module, wherein the main controller is a processor of the multifunctional gateway and is in control connection with the transceivers, the 3G module and the WI-FI module, the transceivers are all in communication connection with the main controller and are used for receiving and transmitting network signals, the 3G module is used for providing 3G internet functions, and the WI-FI module is used for being used by a terminal electronic device with the gateway as a WI-FI hot spot. The multifunctional gateway is a gateway integrating an in-vehicle network, the Internet and an inter-vehicle network and extends and integrates firewall functions, remote diagnosis functions, 3G functions, WIFI functions, power supply security level management functions and the like; extension function hardware and software are designed in a modularized mode, meanwhile, the multifunctional gateway serves as a platform-type multifunctional gateway, the extension functions have transplantable performance, the multifunctional gateway is suitable for vehicle models with different configuration parameters and of different levels in a platform, and development cost and develop frequency can be effectively reduced.

The embodiment of the invention discloses a data processing method and device based on a block chain and a terminal, and the method comprises the steps: receiving an obtaining request, sent by a second terminal, for target data, obtaining a secret key pair corresponding to a first terminal, and enabling the secret key pair corresponding to the first terminal to comprise a second private key and asecond public key; encrypting the target data by adopting the second public key to obtain a ciphertext of the target data; encrypting the second private key by adopting the first public key to obtaina ciphertext of the second private key; and storing the ciphertext of the second private key and the ciphertext of the target data in a blockchain network, so that the second terminal reads the ciphertext of the second private key and the ciphertext of the target data from the blockchain network, and decrypts the ciphertext of the target data according to the ciphertext of the second private key to obtain the target data. Through the embodiment of the invention, the security of the data in the blockchain can be improved.

The invention provides an anti-counterfeiting recognition device provided with a self-destructive protection assembly. The device comprises a top shell, a bottom shell, a battery fixed into the bottom shell and a circuit board connected with the battery, and further comprises at least one voltage detection device used for detecting voltage signals. The voltage detection device is connected with a main control module. The top shell is further provided with at least one convex column extending to the inside of the bottom shell, and the bottom of the convex column is in contact with the voltage detection device so as to generate the voltage signals. A method for using the device includes the steps that the main control module reads the voltage signals input by the voltage detection device in real time; when the main control module can not detect the voltage signals input by the voltage detection device in real time, the main control module starts a self-destructive program so as to delete data stored in a memory. When the device is detached illegally, the main control module can quickly delete all the data and programs in the memory at the moment that the top shell is separated from the bottom shell, so that the data and the programs in the memory are prevented from being read illegally.

The invention provides a self-destroying protection method based on a malicious invasion of a file system. The method comprises the steps that when the content of a specified file in a common disk is not matched with the content in a specific file, the number of times of the malicious invasion of a hidden disk is accumulated; when the number of times of the malicious invasion of the hidden disk reaches an upper limit, the file system of the hidden disk is deleted, and the content in the hidden disk cannot be read. A device executing the method comprises a file type detection module, a content comparison module, an accumulating module, a comparison module for the number of times and a file system deleting module. The file type detection module is used for detecting the type of the specified file stored in the common disk of equipment, the content comparison module is used for distinguishing whether the content of the specified file is matched with that of the specific file or not, the accumulating module is used for accumulating the number of times of the malicious invasion of the hidden disk, the comparison module for the number of times is used for comparing the accumulated number of times of the malicious invasion of the hidden disk and the upper limit value of the accumulated number of times, and the file system deleting module is used for deleting information in an FAT area of the hidden disk. According to the method and the device, the safety of data in the equipment can be improved, and the data are effectively prevented from being illegally copied.

The invention discloses a data storage method which comprises the steps that a cloud disk storage request sent out by a user is received, wherein the cloud disk storage request comprises document data and a library password of a library in which the document data is located; a library identification code of the library is acquired, the library identification code and the library password are encrypted, and an encrypted library identifier is obtained; the document data is encrypted, and encrypted document data is obtained; and the library identification code, the encrypted library identification and the encrypted document data are uploaded to a cloud disk server for corresponding storage. Correspondingly, the invention also discloses a data reading method and a device. By the data storage method, the data reading method and the device disclosed by the embodiment of the invention, the data storage becomes safer; operations are simple; and user experience is improved.

The invention provides a data authentication system, which comprises a management server, at least one mirror image server and an authentication server, wherein the management server is used for receiving a first communication connection request, and transmitting a first digital certificate and a second digital certificate in the first communication connection request to the authentication server; the at least one mirror image server is used for receiving a second communication connection request, and transmitting the second digital certificate and the first digital certificate in the second communication connection request to the authentication server; the authentication server is used for judging whether the management server and the at least one mirror image server pass authentication or not, and if the management server and the at least one mirror image server pass the authentication, a communication connection is allowed to be established between the management server and the at least one mirror image server. The invention also provides a data authentication method. According to the technical scheme provided by the invention, the safety of patient information in the management server and the at least one mirror image server can be ensured, and therefore, the patient information in the management server and the at least one mirror image server is prevented from being illegally read, and illegal information is prevented from being written in the management server or the at least one mirror image server.

The invention provides a secure communication method and system of a mobile terminal. The method comprises a key negotiation process, a secure instant messaging process and a secure call process. Thekey negotiation process comprises the following steps: a first mobile terminal and a service platform obtain a first session key after identity authentication and key negotiation; a second mobile terminal performs identity authentication and key negotiation with the service platform to obtain a second session key; in the safe instant messaging process, the first mobile terminal encrypts and decrypts instant messaging information by adopting the first session key and the second session key between the service platform and the second mobile terminal; in the secure call process, the first mobileterminal uses the first session key, the second session key and the second mobile terminal to distribute a data encryption key through the service platform; and the first mobile terminal and the second mobile terminal encrypt and decrypt voice call information through the data encryption key.

The invention discloses a device for recovering a mobile terminal download access, which comprises a capacitor and a switch circuit. One end of the capacitor is connected with a pin of a master chip of a mobile terminal, and the other end of the capacitor is connected with the switch circuit. The switch circuit is connected in series between the master chip of the mobile terminal and a download interface. By the invention, the legal download of downloading updated software legally is realized, user experience is promoted, and a hacker is effectively prevented from illegally reading and downloading data of the mobile terminal, so the network locking is better realized.

The invention provides a security data storage method, a computer device and a computer readable storage medium, and the method comprises the steps: obtaining first-level encrypted data, transmitting the first-level encrypted data to a trusted execution environment through a shared memory, encrypting the first-level encrypted data in the trusted execution environment by using a unique key of equipment, and storing the encrypted first-level encrypted data in the trusted execution environment; obtaining secondary encrypted data; and transmitting the second-level encrypted data to the rich execution environment through the shared memory, and storing the second-level encrypted data in a preset storage area of the rich execution environment. The invention further provides a computer device and a computer readable storage medium for implementing the method. According to the invention, the embedded device can store the security data with low cost, and the security of security data storage is ensured.

The invention discloses a multi-host shared storage system and a data integrity protection method. The fingerprint for the data is calculated according to the feature information of the data owner system, the address information needing to be stored and the like, and the fingerprint and the data are written into the storage medium together. Therefore, in the data access process, whether the fingerprint information corresponds to the original fingerprint information or not can be judged on the basis of the system identity of the system corresponding to the visitor, the provided address and other information, and therefore the integrity of data is protected between different systems. Particularly, since in the data access process, fingerprint matching needs to be carried out on the system requested to be accessed in advance, illegal access can be prevented and the system sending the abnormal data access request can be reported in time when fingerprint mismatching is judged, traceabilityis achieved, illegal reading and tampering of data can be detected and prevented, integrity of data between different systems is protected, and data safety is greatly enhanced.

The invention discloses a method for protecting permission of a volatile memory bank. The method comprises the following steps: when receiving an operation request of an operation request user, an MPU analyzes the operation type in the operation request and the volatile memory bank corresponding to the operation type, and judges whether the operation request user has a permission to operate the volatile memory bank according to a permission protection mechanism; if so, the MPU transmits an authorization signal to a DMA controller; the DMA controller receives the authorization signal, and configures parameters corresponding to the operation type according to the operation request. Therefore, the DMA controller executes the corresponding operation only after the authorization of the MPU is successful, so that the data in the volatile memory bank are prevented from being illegally changed or read by other users, and the security is enhanced. As the protection mechanism for the volatile memory bank is added, the user can change the operation permission of the DMA on the volatile memory bank, and the operation flexibility is improved. In addition, the invention further discloses a system for protecting permission of the volatile memory bank, and the effects are as mentioned above.

A test terminal negation circuit (100) comprises a switch circuit (102) receiving a test signal from a test terminal (101) and outputs it in an asserted state as it is or in a predetermined negated state to a test object circuit (106), a test signal control circuit (105) which controls an output signal of the switch circuit (102) to be asserted or negated, a test mode signal generation circuit (103) which generates a test mode signal which asserts the output signal of the switch circuit (102), and a negating signal generation circuit (104) which can output a negating signal for forcing the output signal of the switch circuit (102) into negated state and comprises an electrically rewritable nonvolatile memory element. When the test signal control circuit (105) receives the negating signal, it does not assert the output signal of the switch circuit (102) even it receives the test mode signal.

The invention comprises a dynamic ID based RFID verification method. The method is characterized by comprising the realization steps that S1) a reader sends an authentication request, and the authentication request is completed; S2) a label makes response feedback in response to the authentication request; S3) a background database is used to verify authentication preliminarily; and S4) the label is used for verify authentication secondarily. The method and system have the advantages that use of formula encryption can ensure that private content is safe and eavesdropping and position tracking are prevented; use of double-randomized-number verification can prevent playback attack effectively; neither an invalid card reader nor an invalid label can pass validity authentication, invalid reading, counterfeiting attack and disguising can be prevented effectively; and due to a formula is simple, neither too high computing capability nor too much storage space is needed, and the manufacture cost is not increased.