Research On Key Technology Of Financial Leasing System Based On Smart Contract

Business authenticity is the key to control the risks of financial leasing business.Block chain technology,as a trust-building machine,can help resolve trust issues among different institutions,systems and geographical areas.However,the anonymity of block chain identity brings risks to real business transactions.This paper studies the trustworthiness of the subject of block chain transaction and the security and business truthfulness of multi-party transaction.The main work is as follows:1.SCTIM: a trusted identity model based on smart contract,is proposed for trustworthiness of identity in block chain transactions.The model introduces digital certificate into the block chain identity system and solves the complex problem of traditional PKI certificate chain construction by using smart contract technology.In the SCTIM model,block chain digital certificate is designed and a new cross-domain authentication method is proposed.Without changing the original PKI trust domain level,the model improves the cross-domain authentication efficiency by replacing the traditional signature with the hash value of the authentication certificate.2.SCMECM: a multi-party electronic contract model,based on smart contract,is proposed to solve the problem of the authenticity of block chain business and its compliance with law.The signing of the electronic contract by the intelligent contract ensures that the parties can not repudiate the introduction of CA authenticated digital certificate,and the business transaction can meet the legal compliance by using the trusted signature.The security of SVO is demonstrated by logical formalized analysis.3.Based on SCTIM and SCMECM,this paper constructs and implements a prototype system of financial leasing business based on smart contract.The system architecture and smart contract are designed,and the prototype system is built in etheric private chain environment.The security analysis,functional test and performance test are carried out to verify the feasibility of the system.