Faculty Advisor or Committee Member

Robert J. Walls, Advisor

Faculty Advisor or Committee Member

Craig Shue, Reader

Faculty Advisor or Committee Member

Craig E. Wills, Reader

Identifier

etd-042419-142428

Abstract

Real-time embedded systems can be found in a large number of devices we use, including safety-critical systems. Useful for their small size and low power consumption, they are also harder to protect against state-of-the-art attacks than general purpose systems due to their lack of hardware features. Even current defenses may not be applicable since instrumentation added to defend real-time embedded systems may cause them to miss their deadlines, rending them inoperable. We show that the static properties obtained by the scheduling policies can be used as security guarantees for the tasks composing the program. By completely securing a subset of the tasks of the program only using the scheduler policy, we remove the need to add external instrumentation on these tasks, reducing the amount of extra instructions needed to entirely protect the system. With less instrumentation, the overhead added by the defenses is reduced and can therefore be applied to a larger number of systems.

Publisher

Worcester Polytechnic Institute

Degree Name

MS

Department

Computer Science

Project Type

Thesis

Date Accepted

2019-04-18

Accessibility

Unrestricted

Subjects

embedded systems, instrumentation-based defense, scheduling, security

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