Research on Data Security Protection and Access Control Algorithms in Cloud Computing Environments

With the rapid development of cloud computing technology, data security and access control have become critical issues in cloud computing environments. This paper aims to research and design an effective data security protection mechanism and access control algorithm to ensure the security and rationality of data access in cloud environments. Firstly, this paper provides an overview of data security issues in cloud computing environments and analyzes the shortcomings of existing access control models. Secondly, a role-based access control (RBAC) model is proposed, combined with the characteristics of attribute-based access control (ABAC), to design a new access control algorithm. This algorithm not only improves the flexibility and fine-grained access control but also enhances data security by introducing encryption technology and access control lists (ACLs). Finally, the effectiveness and security of the proposed algorithm are verified through experiments. The research results show that the algorithm can meet the high requirements of data security and access control in cloud computing environments.