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Finally, the analysis of the system is given. A not-for-profit organization, IEEE is the world's largest technical professional organization dedicated to advancing technology for the benefit of humanity. In addition, the security of the scheme is analyzed. The method takes advantage of the unique traceability, tamper-evident, and smart contract of blockchain, in order to achieve secure, convenient, autonomous and fine-grained access control in ATM environment by reforming attribute-based access control ABAC. However, the contradiction between ATM data sharing and privacy protection has hindered the development of ATM, resulting in data silos that are difficult to solve.