A Time Constraints Permission Based Delegation Model in RBAC (RBAC을 기반으로 하는 시간제한 권한 위임 모델)

김태식; 장태무

A Time Constraints Permission Based Delegation Model in RBAC

Journal of The Korea Society of Computer and Information
Abbr : JKSCI
2010, 15(11), pp.163~171
Publisher : The Korean Society Of Computer And Information
Research Area : Engineering > Computer Science

김태식 ¹, 장태무 ¹

¹동국대학교

Accredited

ABSTRACT

RBAC(Role-Based Access Control) has advantages in managing access controls, because it offers the role inheritance and separation of duty in role hierarchy structures. Delegation is a mechanism of assigning access rights to a user. RBDM0 and RDM2000 models deal with user-to-user delegation. The unit of delegation in them is a role. However, RBAC does not process delegation of Role or Permission effectively that occurs frequently in the real world. This paper proposes a Time Constraints Permission-Based Delegation Model(TCPBDM) that guarantees permanency of delegated permissions and does not violate security principle of least privilege and separation of duty. TCPBDM, based on the well-known RBAC96, supports both user-to-user and role-to-role delegation with time constraints. A delegator can give permission to a specific person, that is delegatee, and the permission can be withdrawn whenever the delegator wants. Our model is analyzed and shown to be effective in the present paper.

KEYWORDS

RBAC96, Delegation Model, Time Constraints, TCPBDM

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