2results about How to "Achieve uniqueness" patented technology

This invention discloses a multi-tenant end-to-end data security isolation and control system and method, belonging to the field of vehicle network data security. It aims to solve the problems of easy data crosstalk, discontinuous isolation, unreliable trust benchmarks, and difficulty in compliance traceability in multi-tenant scenarios. The system generates a tenant root identifier (TID) for vehicle enterprise tenants, which, together with the device sub-identifier (DID), forms a tenant identifier chain. This chain is synchronized with a trusted authentication center to establish a vehicle-cloud hardware-level trust root. When the vehicle terminal accesses the system, it completes two-way identity authentication and allocates a dedicated message queue telemetry transmission MQTT topic partition and access permissions according to the TID. The terminal collects time-series vehicle control data and generates encrypted data frames with intrinsic identifiers and checksums for uploading. The access gateway performs dual isolation verification before transparent transmission. Data is forwarded to an independent logical storage partition for isolated storage according to the TID. This invention achieves strong hardware-level isolation, real-time verification, and full traceability throughout the entire end-to-cloud chain, effectively preventing cross-tenant data leakage.

The utility model relates to fan cover technical field discloses wedge fan cover, connect assembly, the bottom fixed mounting of connect assembly has the guide component, the outside fixed mounting of first sliding block has the cover body, the connection cylinder is located the inside of cover body, the sealing ring is combined with cover body. The beneficial effect of adopting the above technical scheme is: when needing to assemble the device, first, the cover body is installed through the sliding connection of first sliding block and first sliding slot, the cover body is quickly installed to the left side of guide component, and since the length value of first sliding block and the length value of first sliding slot are adapted, the effect of just installing in place is realized, at this time, the connection cylinder is passed from the inside of cover body, the connection cylinder is communicated with cover body and guide component, the effect of quick installation is achieved, and since the cover body and guide component have the effect of dismounting, the effect of convenient transportation is achieved.