Synchronization Protocols to Prevent Illegal Information Flow in Role-Based Access Control Systems

2014 ◽  
Author(s):  
Shigenari Nakamura ◽  
Dilewaer Doulikun ◽  
Ailixier Aikebaier ◽  
Tomoya Enokido ◽  
Makoto Takizaw
Keyword(s):  
Access Control ◽  
Control Systems ◽  
Information Flow ◽  
Role Based Access Control ◽  
Role Based

On Optimal Employee Assignment in Constrained Role-Based Access Control Systems

2017 ◽  
Vol 7 (4) ◽  
pp. 1-24 ◽  
Author(s):  
Arindam Roy ◽  
Shamik Sural ◽  
Arun Kumar Majumdar ◽  
Jaideep Vaidya ◽  
Vijayalakshmi Atluri
Keyword(s):  
Access Control ◽  
Control Systems ◽  
Role Based Access Control ◽  
Role Based

scholarly journals A Role-Based Access Control Model in Modbus SCADA Systems. A Centralized Model Approach

Sensors ◽  
2019 ◽  
Vol 19 (20) ◽  
pp. 4455 ◽  
Author(s):  
Figueroa-Lorenzo ◽  
Añorga ◽  
Arrizabalaga
Keyword(s):  
Performance Analysis ◽  
Access Control ◽  
Control Systems ◽  
Security Analysis ◽  
Control Model ◽  
Transport Layer ◽  
Role Based Access Control ◽  
Access Control Model ◽  
Modbus Protocol ◽  
Role Based

Industrial Control Systems (ICS) and Supervisory Control systems and Data Acquisition (SCADA) networks implement industrial communication protocols to enable their operations. Modbus is an application protocol that allows communication between millions of automation devices. Unfortunately, Modbus lacks basic security mechanisms, and this leads to multiple vulnerabilities, due to both design and implementation. This issue enables certain types of attacks, for example, man in the middle attacks, eavesdropping attacks, and replay attack. The exploitation of such flaws may greatly influence companies and the general population, especially for attacks targeting critical infrastructural assets, such as power plants, water distribution and railway transportation systems. In order to provide security mechanisms to the protocol, the Modbus organization released security specifications, which provide robust protection through the blending of Transport Layer Security (TLS) with the traditional Modbus protocol. TLS will encapsulate Modbus packets to provide both authentication and message-integrity protection. The security features leverage X.509v3 digital certificates for authentication of the server and client. From the security specifications, this study addresses the security problems of the Modbus protocol, proposing a new secure version of a role-based access control model (RBAC), in order to authorize both the client on the server, as well as the Modbus frame. This model is divided into an authorization process via roles, which is inserted as an arbitrary extension in the certificate X.509v3 and the message authorization via unit id, a unique identifier used to authorize the Modbus frame. Our proposal is evaluated through two approaches: A security analysis and a performance analysis. The security analysis involves verifying the protocol's resistance to different types of attacks, as well as that certain pillars of cybersecurity, such as integrity and confidentiality, are not compromised. Finally, our performance analysis involves deploying our design over a testnet built on GNS3. This testnet has been designed based on an industrial security standard, such as IEC-62443, which divides the industrial network into levels. Then both the client and the server are deployed over this network in order to verify the feasibility of the proposal. For this purpose, different latencies measurements in industrial environments are used as a benchmark, which are matched against the latencies in our proposal for different cipher suites.

LOCKING PROTOCOL FOR INFORMATION FLOW CONTROL

2004 ◽  
Vol 05 (03) ◽  
pp. 233-247 ◽  
Author(s):  
RYUNG CHON ◽  
KOUHEI TAKEDA ◽  
TOMOYA ENOKIDO ◽  
MAKOTO TAKIZAWA
Keyword(s):  
Access Control ◽  
Flow Control ◽  
Information Flow ◽  
Single Server ◽  
Role Based Access Control ◽  
Information Flow Control ◽  
Server Systems ◽  
Locking Protocol ◽  
Role Based ◽  
Multi Server

We discuss a novel role locking protocol (RLP) to prevent illegal information flow among objects in a role-based access control (RBAC) model. In this paper, we define a conflicting relation among roles "a role R1 conflicts with another role R2" to show that illegal information flow may occur if a transaction associated with role R1 is performed before another transaction with role R2. Here, we introduce a role lock on an object to abort a transaction with role R1 if another transaction with role R2 had been already performed on the object. Role locks are not released even if transactions issuing the role locks commit. After data in an object o1 flow to another object o2, if the object o1 is updated, the data in the object o2 is independent of the object o1, i.e. obsolete. A role lock on an object can be released if information brought into the object is obsolete. We discuss how to release obsolete role locks. We also discuss how to implement the role locking protocol in single-server and multi-server systems.

A feature-based approach for modeling role-based access control systems

2011 ◽  
Vol 84 (12) ◽  
pp. 2035-2052 ◽  
Author(s):  
Sangsig Kim ◽  
Dae-Kyoo Kim ◽  
Lunjin Lu ◽  
Suntae Kim ◽  
Sooyong Park
Keyword(s):  
Access Control ◽  
Control Systems ◽  
Role Based Access Control ◽  
Feature Based ◽  
Role Based

On Formalizing and Normalizing Role-Based Access Control Systems

2008 ◽  
Vol 52 (3) ◽  
pp. 305-325 ◽  
Author(s):  
D. Power ◽  
M. Slaymaker ◽  
A. Simpson
Keyword(s):  
Access Control ◽  
Control Systems ◽  
Role Based Access Control ◽  
Role Based
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