| 1. |
- Jiang, Wei, et al.
(författare)
-
Energy Aware Real-Time Scheduling Policy with Guaranteed Security Protection
- 2014
-
Ingår i: <em>2014 19TH ASIA AND SOUTH PACIFIC DESIGN AUTOMATION CONFERENCE (ASP-DAC)</em>. - : IEEE conference proceedings. - 9781479928163 ; , s. 317-322
-
Konferensbidrag (refereegranskat)abstract
- In this work, we address the emerging scheduling problem existed in the design of secure and energy-efficient real-time embedded systems. The objective is to minimize the energy consumption subject to security and schedulability constraints. Due to the complexity of the problem, we propose a dynamic programming based approximation approach to find the near-optimal solutions with respect to predefined security constraint. The proposed technique has polynomial time complexity which is about half of traditional approximation approaches. The efficiency of our algorithm is validated by extensive experiments.
|
|
| 2. |
|
|
| 3. |
- Wen, Liang, et al.
(författare)
-
Detecting Fault Injection Attacks on Embedded Real-Time Applications: A System-Level Perspective
- 2015
-
Ingår i: 2015 IEEE 17TH INTERNATIONAL CONFERENCE ON HIGH PERFORMANCE COMPUTING AND COMMUNICATIONS, 2015 IEEE 7TH INTERNATIONAL SYMPOSIUM ON CYBERSPACE SAFETY AND SECURITY, AND 2015 IEEE 12TH INTERNATIONAL CONFERENCE ON EMBEDDED SOFTWARE AND SYSTEMS (ICESS). - : IEEE. - 9781479989379 ; , s. 700-705
-
Konferensbidrag (refereegranskat)abstract
- This paper presents an approach to the synthesis of secure real-time applications mapped on distributed embedded systems, which focuses on preventing fault injection attacks. We utilize symmetric cryptographic service to protect confidentiality, and deploy fault detection within confidential algorithm to resist fault injection attacks. Several fault detection schemes are identified, and their fault coverage rates and time overheads are derived and measured, respectively. Our synthesis approach makes efforts to determine the best fault detection schemes for the encryption/decryption of messages, such that the overall security strength of resisting fault injection attack is minimized, and the deadline constraint of the real-time applications is guaranteed. Since addressing the problem is still a NP-hard problem, we propose an efficient algorithm based on Fruit fly Optimization Algorithm (FOA), which can achieve better results by lower time overheads, compared with simulated annealing algorithm. Extensive experiments demonstrate the superiority of our approach.
|
|
| 4. |
- Zhang, Xia, et al.
(författare)
-
Design Optimization of Energy- and Security-Critical Distributed Real-Time Embedded Systems
- 2013
-
Ingår i: <em>15th Workshop on Advances in Parallel and Distributed Computational Models (APDCM 2013), Boston, USA, May 20, 2013.</em>. - : IEEE Press. - 9780769549798 ; , s. 741-750
-
Konferensbidrag (refereegranskat)abstract
- In this paper, we approach the design of energy- and security-critical distributed real-time embedded systems from the early mapping and scheduling phases. Modern Distributed Embedded Systems (DESs) are common to be connected to external networks, which is beneficial for various purposes, but also opens up the gate for potential security attacks. However, security protections in DESs result in significant time and energy overhead. In this work, we focus on the problem of providing the best confidentiality protection of internal communication in DESs under time and energy constraints. The complexity of finding the optimal solution grows exponentially as problem size grows. Therefore, we propose an efficient genetic algorithm based heuristic for solving the problem. Extensive experiments demonstrate the efficiency of the proposed technique.
|
|
| 5. |
- Zhang, Xia, et al.
(författare)
-
Design Optimization of Security-Sensitive Mixed-Criticality Real-Time Embedded Systems
- 2013
-
Konferensbidrag (refereegranskat)abstract
- In this paper we are interested in securitysensitive mixed-criticality real-time systems. Existing researches on mixed-criticality systems usually are safety-oriented, which seriously ignore the security requirements. We firstly establish the system model to capture security-critical applications in mixed-criticality systems. Higher security-criticality protection always results in significant time and energy overhead in mixedcriticality systems. Thus, this paper proposes a system-level design framework for energy optimization of security-sensitive mixed-criticality system. Since the time complexity of finding optimal solutions grows exponentially as problem size grows, a GA based efficient heuristic algorithm is devised to address the system-level optimization problem. Extensive experiments demonstrate the efficiency of the proposed technique, which can obtain balanced minimal energy consumption while satisfying strict security and timing constraints.
|
|
| 6. |
|
|
| 7. |
- Xia, Q. L., et al.
(författare)
-
Infrared Laser Pulses Excite Action Potentials in Primary Cortex Neurons in Vitro∗
- 2019
-
Ingår i: Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS. ; , s. 5184-5187
-
Konferensbidrag (refereegranskat)abstract
- Infrared neural modulation (INM) has been well studied in the peripheral nervous system (PNS) for potential clinical applications. However, limited research has been conducted on the central nervous systems (CNS). In this study, we aimed at investigating the feasibility of using pulsed infrared (IR) laser with a wavelength of 1940 nm to excite network activity of cultivated rat cortex neurons.We cultured rat cortex neurons, forming neural networks with spontaneous neural activity, on glass multi-electrode arrays (MEAs). Laser at a power of 600 mW and a pulse rate of 10 Hz were used to stimulate the neural networks using the optics of an inverted microscope. Pulse durations were varied from 200 μs to 1 ms. The spike rate was calculated to evaluate the change of the neural network activity during the IR stimuli and the corresponding frequency components of neural response were calculated to examine whether recorded spikes were evoked by the IR pulse or not. A temperature model was adapted from a previous study to estimate the temperature rise during laser pulsing.We observed that the IR irradiation with a pulse duration of 800 μs and 1 ms could excite neuronal action potentials. The temperature rose 18.5 and 23.9 °C, for pulse durations of 800 μs and 1 ms, respectively. Thus, in addition to previously shown inhibition of IR irradiation with a wavelength of 1550 nm, we demonstrate an optical method that can modulate neural network activity in vitro. The preliminary results from this paper also suggested that MEA recording technology coupled with a laser and microscope systems can be exploited as a new approach for future studies to understand mechanisms and characterize laser parameters of INM for CNS neurons.
|
|
