Design And Implementation Of A Smart Contract System For Assert Management

With the development of the Internet,the scope of assets has expanded from the physical assets,such as houses and other tangible assets,to the intangible assets,such as data and digital assets.In terms of managing complex types of assets,the traditional asset management system has some problems to be solved,such as poor security of asset data storage,complicated process of asset right confirmation and low efficiency of asset circulation.Blockchain,with its features of decentralization,privacy protection,tamper-proof and traceability,can provide a digital asset management scheme with secure data storage,convenient asset right confirmation and high asset circulation efficiency.Based on the blockchain technology,this thesis proposes an asset management scheme with features of privacy protection,asset digitalization,support for cross-asset type transactions,and hierarchical secret key management.Then it designs and implements a smart contract system for asset management.The main work of this thesis includes three aspects.At first,it designs an asset management scheme,including the designs of a data storage scheme supporting privacy protection,so that the asset datas can all belong to the user,a secure token contract deploy scheme for digitalizing assets and facilitating asset confirmation,an asset trading scheme that can be traded across token types to improve asset circulation efficiency,a friendly secret key management scheme and a data access authority management scheme to improve the security of asset management.Then the prototype of the smart contract system for asset management is implemented based on this scheme.Finally,evaluation and security analysis of this system are carried out,and the improvement direction is proposed.