Providing a system user with a unique and secure identity is a prerequisite for authentication and authorization aspects of a security system. It is generally understood that the existing digital identity systems store the identity details in centralized databases, and users store the identity details in centralized databases in which users do not have any control over them. These vulnerabilities in the traditional digital identities make them susceptible to various malicious assaults and modifications.

Dealing with relationships on farmland is one of the most important issues in China. Since its reform and opening up, the policies of the Central Committee of the Communist Party of China (CPC) on “agriculture, rural areas, and farmers” have been embodied in the Central No. 1 document. The documents, which represent the purpose of China, reveal the strategic direction and development ideas of the state. Based on Central No.

Rural depression is a global issue in the process of worldwide urbanization. Compared with rural economic institution reform, rural land institution reform is more thorough in realizing rural revitalization. In this paper, polycentric governance theory is used to introduce marketization reform of collective profit-oriented land (MRCPL). MRCPL aims to allow rural collective profit-oriented construction land to be sold and leased with the same rights and at the same price as state-owned construction land.