Research On Blockchain-based Resource Sharing Mechanism Of Computing Power Network

The development of cloud computing,edge computing and the popularization of intelligent terminals drive the distribution of computing resources to be more decentralized and ubiquitous.Ubiquitous computing resources will be connected to the network from everywhere,forming a three-level computing power architecture of cloud,edge,and end.And there is a development trend of deep integration of computing and network.In this context,the industry has put forward the concept of computing power network in recent years.At the same time,blockchain is becoming one of the indispensable technologies for building a new trust system in the future with its unique trust establishment mechanism and features such as decentralization,traceability,non-tampering,safety and reliability.It has become the consensus to build a computing power network trust and security system with blockchain technology.Although the existing research proposes the idea of realizing the secure and trusted resource sharing of computing power network based on blockchain technology,it has not designed the fusion architecture and specific mechanism in detail,and has not taken into account the high heterogeneity and wide distribution of resource equipment.The highly heterogeneous and widespread distribution of resource devices brings security and trustworthiness issues such as user identity authentication,computing power access authentication,secure data storage and sharing,and trust management,but the existing research has not taken these issues into consideration.Therefore,in view of the shortcomings of existing research,this thesis conducts research on the blockchain-based computing power network architecture and the trusted resource sharing mechanism.The main contributions can be summarized into the following three aspects:First of all,this thesis designs the blockchain-based computing power network architecture in detail.Considering the technical characteristics and resource sharing requirements of the two,the architecture named BCBCPN is proposed.Also the functional modules and technical solutions of each platform in the architecture are designed in detail.Secondly,this thesis focuses on the blockchain-based computing power network trusted resource sharing scheme.Focusing on the security threats existing in computing power network resource sharing,this thesis proposes four mechanisms from the three dimensions of identity,ability and behavior trustworthiness.Then simulation experiments are carried out in this thesis,and the results show that the mechanism has good flexibility in dealing with collusion attacks and ballot stuffing attacks.Finally,this thesis realizes a trusted operation system of computing power network.The system completes the configuration and construction of the consortium chain platform based on Hyperledger Fabric,and opens the distributed ledger by designing data storage and writing smart contracts.Combined with Fabric-SDK technology,ECDSA signature algorithm,attribute encryption algorithm,and hash calculation algorithm,the mechanism proposed in this thesis is implemented in engineering.Functional and performance tests show that the mechanism proposed in this thesis can provide stable and reliable security enhancement services,and provide a secure and credible guarantee for the resource sharing in the computing power network.