Research of attributes management of UCON with role properties.

Attributes as the core element of UCON model, are short of a brief and flexible administrative pattern. To solve this problem, this paper analyzed the properties of attributes of core UCON model and proposed a managed attributes structure of UCON model with role properties (MASUR). MASUR was sorted into system administrative subjects, owner subjects and general subjects by the ability of creating attributes. Thus, it expanded the centric-administration mode of core UCON model and owned the ability to clarify the duties of subjects. Moreover, MASUR had three attribute types: system attributes, discretionary attributes and other-controlled attributes, and gave a new concept "owner" to clearly restrict the subjects to updating attribute's value. Considered the mature theory result of RBAC, the structure involved the attributes role and operator role, which was more convenient to the attributes classifies in modern large-scale systems. MASUR gave a wider and fine-grained flexible controlling attributes method in modern systems. [ABSTRACT FROM AUTHOR]