Abstract: Access control technology is one of the important issues concerned with information security, which has been provided in many application fields due to network’s rapid development. This paper presents a survey on recent researches of access control, and several main technologies on access control are investigated in detail, which include discretionary access control (DAC), mandatory access control (MAC), rolebased access control (RBAC), taskbased access control (TBAC) and usage control (UCON) is described emphatically. In addition, a new model called UCON is introduced.

Key words: discretionary access control, mandatory access control, rolebased access control, taskbased access control, usage control