2results about How to "Flexible sharing" patented technology

The utility model relates to a kind of cap type pier block tool for ship sub-assembly construction, including steel structure portable cap and concrete cement pier block, steel structure portable cap is detachably sleeved at the top of concrete cement pier block;Steel structure portable cap includes a roof, and the edge below of the four edges of roof is respectively welded with side edge reinforcing plate, and form the groove of bottom surface opening;Concrete cement pier block includes pier block body, and two dumper insertion holes are set in the lower part of its opposite sides, and pier block dumper insertion hole penetrates concrete cement pier block.The utility model effectively reduces the cost of all-steel pier block, solves the problem that pure concrete pier block is easily damaged and cannot be fixed linear section, has the advantages of low cost, good durability, strong adaptability, flexible transfer and the like, significantly improves the support safety and economy of ship sub-assembly construction.

This invention proposes a blockchain-based access control method for mobile edge-cloud collaboration. The steps are as follows: initializing protocol parameters within the mobile edge network domain; generating the master key and public key of the edge-cloud collaboration system; generating public / private key pairs for the cloud server, edge server, and terminal members; terminal members register their identities, obtain attribute permission parameters, and write them into the blockchain; after successful registration, resource providers share data and set attribute sets and access control policies for accessing the resource; resource visitors access resources within the domain; if the required resource is not found within the domain, the visitor requests a signature from the local edge server and obtains the signature to access the resource across domains. This invention employs hidden attribute authentication technology, ensuring that attributes are not leaked during transmission, thus more effectively and securely protecting personal privacy information. Simultaneously, the protocol, combined with blockchain technology, ensures resistance to collusion attacks, making access control more flexible, efficient, and practical.