Research On Authentication And Energy Trading Scheme In The Internet Of Things

With the continuous deepening of the Internet of Things(Io T)technology,the global interconnection and intercommunication is also advancing,indicating that the era of intelligence has arrived.However,the number of the Io T devices is widely distributed,the deployment environment is complex,and the computing and storage capabilities are limited,which makes the authentication and access efficiency low.In addition,based on the data perception,collection and transmission of the Io T devices,the security loopholes in the devices themselves further exacerbate security risks,and are vulnerable to various malicious attacks,resulting in the leakage of private information or even tampering.Energy is one of the Io T scenarios with the most application potential and demand.The large-scale growth of distributed energy has put forward new requirements for real-time dispatching.Meanwhile,the current peer-to-peer energy trading still lacks a trading mode for information exchange.The blockchain provides strong technical support for the energy Internet of things with its characteristics of decentralization and immutability,and promotes the landing of the energy Internet of things.However,in the current energy trading scheme based on blockchain,there are still problems such as difficulty in benefit distribution,difficulty in guaranteeing trading fairness,low trading efficiency and various malicious attacks.Therefore,it is urgent to provide trusted identity authentication for the Io T to protect the security and reliability of communication data,and to provide effective solutions to the drawbacks in distributed energy trading.Based on the above problems,the main research contents of this paper are as follows:(1)Design a certificateless signature scheme suitable for the Io T scenarios.The analysis found that a large number of current certificateless signature schemes cannot completely resist the key replacement attacks and the malicious but passive Key Generation Center attacks.In addition,because the Io T devices are usually lightweight,and the information exchanges between devices are frequent and real-time requirements are high,traditional solutions have certain limitations in authentication.According to the above problems,this paper proposes a certificateless signature scheme to achieve Io T security authentication.Based on the elliptic curve cryptographic algorithm,this signature scheme,under the random oracle model,is existential unforgeability against adaptive chosen messages attacks for two types of super adversaries,and achieves a highly secure identity authentication.Since the proposed scheme does not use bilinear pairing and exponential operations,it is more efficient than other certificateless signature schemes.(2)Improve the fair equivalence and trading efficiency of participants in the distributed energy trading system.In view of the phenomena of unequal information,unfair interests and long block generation time in the current distributed energy trading market,resulting in low trading efficiency and poor user participation enthusiasm.To address these shortcomings,this paper proposes a secure energy trading scheme that combines blockchain and game theory to ensure the security,fairness and trading efficiency.Firstly,this paper constructs an energy trading scheme under the blockchain framework,then establishes a game model among trading entities,and finally proves that the equilibrium solution exists and is unique.At the same time,we analyze the blockchain consensus mechanism,and design the Delegated Proof of Credit consensus to improve the block time and resist target attacks.In addition,this scheme not only satisfies anonymity and unforgeability,but also resists malicious attacks such as double-spending attacks,cheating attacks and tampering attacks.Finally,the security and efficiency of the system are evaluated in detail,which shows that the system is secure,reliable,efficient and feasible.