Access control

Controlling Access to Sensitive Resources

Access Control

Controlling Access to Sensitive Resources

Access in Controlled Based on Different Factors

•Traditionally…….

Role Based Access Control

Mandatory Access Control

Discretionary Access Control

LIMITATIONS

Context insensitive

Static

Coarse grained

Pre-defined

Context Insensitive Context Sensitive

Context Matters

Usage Patterns

Current and Future Access Control Needs

Context Based Access Control

Model

Related Work

• Context Aware Access Control(extensions built on top of a

context insensitive model)

• Context Based Access Control(inherently context

sensitive)

Role Based Access Control

Extended RBAC Models

• Location Based• Time Based• Spatial-Temporal Based• Environmental Role Based• And many others…..

• Too specific • Increased

Complexity• Not widely

applicable

Step 1: Role Engineering

Step 2: Permission Assignment to Roles

Step 3: Role Assignment to Users

Role Engineering

RBAC’s Limitation

Role Activation and Deactivation

RBAC’s Limitation

Role Explosion

RBAC’s Limitation

Attribute Based Access Control

Subject

Attributes

Age NameIdentity

RoleDepartment

Designation

Location

MembershipExperience

Resource Attributes

Size

Creation Time

Last Modified

Path

Location

Usage

Access Time

Content Type

Resource Id

Owner

9 possible combinations, 7 different approachesAdding Attributes to Role-Based Access

Control

Attribute Centric Approach

Attributes

Roles

Identity

References[1] Hu, Vincent C., et al. "Guide to attribute based access control (ABAC) definition and considerations (draft)." NIST Special Publication 800 (2013): 162.[2] Hulsebosch, R. J., et al. "Context sensitive access control." Proceedings of the tenth ACM symposium on Access control models and technologies. ACM, 2005.[3] Zhang, Guangsen, and Manish Parashar. "Context-aware dynamic access control for pervasive applications." Proceedings of the Communication Networks and Distributed Systems Modeling and Simulation Conference. 2004.[4] Covington, Michael J., and Manoj R. Sastry. "A contextual attribute-based access control model." On the Move to Meaningful Internet Systems 2006: OTM 2006 Workshops. Springer Berlin Heidelberg, 2006.[5] Kulkarni, Devdatta, and Anand Tripathi. "Context-aware role-based access control in pervasive computing systems." Proceedings of the 13th ACM symposium on Access control models and technologies. ACM, 2008.[6] Martin, Hervé. "A generalized context-based access control model for pervasive environments." Proceedings of the 2nd SIGSPATIAL ACM GIS 2009 International Workshop on Security and Privacy in GIS and LBS. ACM, 2009.[7] Ferraiolo, David F., et al. "Proposed NIST standard for role-based access control." ACM Transactions on Information and System Security (TISSEC) 4.3 (2001): 224-274.

References[8] Hansen, Frode, and Vladimir Oleshchuk. "SRBAC: A spatial role-based access control model for mobile systems." Proceedings of the 7th Nordic Workshop on Secure IT Systems (NORDSEC’03). 2003.[9] Covington, Michael J., et al. "Securing context-aware applications using environment roles." Proceedings of the sixth ACM symposium on Access control models and technologies. ACM, 2001.[10] Ray, Indrakshi, Mahendra Kumar, and Lijun Yu. "LRBAC: a location-aware role-based access control model." Information Systems Security. Springer Berlin Heidelberg, 2006. 147-161.[11] Ray, Indrakshi, and Manachai Toahchoodee. "A spatio-temporal role-based access control model." Data and Applications Security XXI. Springer Berlin Heidelberg, 2007. 211-226.[12] Kuhn, D. Richard, Edward J. Coyne, and Timothy R. Weil. "Adding attributes to role-based access control." Computer 43.6 (2010): 79-81.[13] Kim, Young-Gab, et al. "Context-aware access control mechanism for ubiquitous applications." Advances in Web Intelligence. Springer Berlin Heidelberg, 2005. 236-242.[14] Shen, Hai-bo, and Fan Hong. "An attribute-based access control model for web services." Parallel and Distributed Computing, Applications and Technologies, 2006. PDCAT'06. Seventh International Conference on. IEEE, 2006.[15] Al-Muhtadi, Jalal, et al. "Cerberus: a context-aware security scheme for smart spaces." Pervasive Computing and Communications, 2003.(PerCom 2003). Proceedings of the First IEEE International Conference on. IEEE, 2003.