Research On Heterogeneous Identical Peer-to-peer Resolution Technology Of Internet Of Things Based On Block Chain

The Internet of Things(IoT)is a network system formed by the connection and communication between a large number of objects,and realizes intelligent management and decision-making of the physical world.In the traditional solution for IoT applications,objects in various application scenarios are used in closed autonomy management technical and did not form an open and shareable situation.In all closed networks,it is necessary to use identity expressed each item,and by use of the identity resolution service,various independent items can be connected to the IoT.Therefore,the identity resolution service is the key technology to solve the information island of the IoT.However,because of the important strategic value of the identity,the identification system has become the strategic commanding point for all countries and industries,forming a variety of mainstream identification system in the world.The new information island has appeared in the choice identification system in different application scenarios.In response to the above-mentioned problems appeared in the development of the IoT,scholars have carried out research on the peer resolution service related to DNS architecture or DHT architecture such as MONS,FONS,CNRS,etc.,solved the problem of ONS management from single root service to multiple root services,and improved resolution services' availability.However,related research is conducted on the single identification system and does not address the gap between the heterogeneous identification systems.The Chinese Academy of Sciences Computer Network Information Center led the construction of the public service platform for a resolution service of the IoT,it has achieved a resolution service that is compatible with a variety of heterogeneous identification system.However,the compatible resolution services which are all accessed as sub-platforms,so this system has made up of a subordinate relationship.However,due to various heterogeneous identification systems fierce competition in the field of IoT domestic and overseas,it is difficult to use the master slave relation to achieve interconnection and interoperability.Therefore,to solve the problem of separation between heterogeneous identification systems,we studies the direction of building a fair equivalence identity resolution service and can be summarized in the following two research points: 1 if the existing resolution service are regulated to a unified one IoT identity system,which cannot form a subordinate relationship among multiple heterogeneous identity systems.Therefore,it is necessary to use peer-to-peer resolution to solve the problem of interconnection and interoperability of multi-identification systems.2 Under the multi-identification system,the types of identifiers must be correctly recognized.Then,according to the identification type,the corresponding resolution service is found to solve the problem of heterogeneous type under the multi-identification system.For the peer-to-peer network under multi-identification system,we take advantage of blockchain decentralization and de-trusting,proposes a peer-to-peer network architecture based on blockchain,and connect the root nodes of each identification resolution service.In a P2 P network,a blockchain-based mapping table data structure and a synchronization mechanism in a root-peer network are designed to ensure multi-identification system's equity.Aiming at the heterogeneous identification rules under the multi-identity system,a heterogeneous identification algorithm was designed to find the corresponding identification standard according to the IoT identity.Then according to the identification standard,the query based on a mapping table between the identifiers,finds the address of the corresponding resolution service,and implements corresponding resolution service.For the above design architecture,we designed a comparison experiment based on the BigchainDB environment to verify that the blockchain in the decentralized environment can ensure that the mapping table records between the root servers in the peer-to-peer network are accuracy and safety.And realize the resolution service under the heterogeneous system by heterogeneous identification algorithm and combine with blockchain P2 P network,experimental results show that the blockchain-based P2 P resolution service can effectively solve the ownership rights and security problems between the heterogeneous identity systems,and can achieve true peer-to-peer resolution service of IoT.