3 results about "Access control matrix" patented technology

The invention relates to the technical field of cores, and discloses a method and a system for realizing USB flash disk equipment interaction based on a flash memory encryption technology, which comprises the following steps of: dividing an encryptable data block of a flash memory controller, and determining a dynamic entropy weight of the encryptable data block by utilizing an equipment interaction instruction and a random noise characteristic signal; generating a self-adaptive key generation sequence capable of encrypting data blocks through an address allocation mode and a dynamic entropy weight of a flash memory controller; calculating a side channel leakage risk index of the flash memory controller, and setting a security level label of an encryptable data block in combination with a self-adaptive key generation sequence; the method comprises the following steps: setting a differentiated security protection mechanism of an encipherable data block by constructing an access control matrix of the encipherable data block and an encryption risk area of a flash memory controller; and generating a secure interaction scheme of the USB flash disk equipment based on the self-adaptive key generation sequence in combination with the differential security protection mechanism and the access control matrix. According to the invention, the interaction safety and reliability of the USB flash disk equipment can be improved.

The invention discloses a computer file protection method, which relates to the technical field of computer information security, and comprises the following steps of: S1, classifying files and marking security levels based on content characteristics and sensitivity; s2, dividing system user permission levels and configuring a multi-factor authentication mechanism; s3, constructing a file access control matrix and setting a fine-grained operation authority rule; s4, deploying an access behavior monitoring module, and recording a file operation behavior log in real time; s5, performing dynamic risk analysis based on behavior modeling and an anomaly recognition algorithm; s6, performing hierarchical response according to the risk level, wherein the hierarchical response comprises measures such as warning, limiting, network disconnection and locking; and S7, encrypting and storing the log information, and providing an auditing interface for behavior traceability. According to the method, static permission control and a dynamic behavior recognition mechanism are fused, full-process intelligent protection of files from creation, access, transmission to storage is achieved, and the method has the advantages of being high in safety, timely in response, capable of achieving self-adaptive evolution of strategies and the like.

The application relates to the core technical field and discloses a U disk device interaction method and system based on flash memory encryption technology, which comprises the following steps: dividing an encryptable data block of a flash memory controller, determining a dynamic entropy weight value of the encryptable data block by using a device interaction instruction and a random noise characteristic signal; generating an adaptive key generation sequence of the encryptable data block through an address allocation mode of the flash memory controller and the dynamic entropy weight value; calculating a side channel leakage risk index of the flash memory controller, setting a security level label of the encryptable data block in combination with the adaptive key generation sequence; setting a differentiated security protection mechanism of the encryptable data block by constructing an access control matrix of the encryptable data block and an encryption risk area of the flash memory controller; and generating a security interaction scheme of the U disk device based on the adaptive key generation sequence, in combination with the differentiated security protection mechanism and the access control matrix. The application can improve the security and reliability of U disk device interaction.