Status and Developments of Access Control Model

Access control is an important information security technology,which plays an important role in many fields.By controlling the user's access to information and resource,access control ensures the confidentiality and integrity of system.In this paper,a survey on recent researches of access control model is presented,the characters and realization method of these access control models are explained.analyzed and compared their characteristics are also analyzed and compared simply.Furthermore,some contents being researched currently are pointed out and the development trends are analyzed.