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    Embedded System Vulnerability Analysis Approach Based on Firmware Modification Attacks in Industrial Control Systems

    , M.Sc. Thesis Sharif University of Technology Pour Vali Moghadam, Hamed (Author) ; Jahangir, Amir Hossein (Supervisor)
    Abstract
    A wide range of field devices, including Intelligent Electronic Devices (IEDs) and Remote Terminal Units (RTUs), are used in Industrial Control Systems (ICSs). These devices are embedded systems that are responsible for protecting the power system devices against faults and damage by controlling circuit breakers. Disruptions in command and control can result in accidents and harm. Due to their physical accessibility and the possibility of backdoors, blackout attacks may be designed and implemented on these devices in a manner similar to what has occurred in many countries in recent year.Many vulnerabilities have been reported for Real-Time Operating System (RTOS), firmware, and software of... 

    Increasing BIOS Trust in Personal Computers Using Reconfigurable Devices

    , M.Sc. Thesis Sharif University of Technology Eslampanah, Marziye (Author) ; Bayat Sarmadi, Siavash (Supervisor)
    Abstract
    Due to the expansion of digital system threats, trusted computation with a new approach for countering such threats has emerged. This approach is based on using a hardware module for implementing a trusted platform (TPM). TPM includes a chipset and the trusted systems core. Nowadays many of mobile computers do include this technology. This hardware creates trust using a trust chain and expanding this trust to other parts of the system. The starting point in this chain is the computer BIOS. BIOS is the first code that the system usually executes. One of the most powerful recent attacks on computer systems is to infect the BIOS and other firmware. One of such complicated attacks is the rootkit... 

    Essential design considerations for wireless multi-channel photoplethysmography system

    , Article IFMBE Proceedings, 23 November 2008 through 27 November 2008, Antwerp ; Volume 22 , 2008 , Pages 1066-1069 ; 16800737 (ISSN); 9783540892076 (ISBN) Kadhim, A. Y ; Mohd Ali, M. A ; Zahedi, E ; Sharif University of Technology
    2008
    Abstract
    The developed wireless multi-channel PPG system comprises tiered communication subsystem with two sensor modules and a single base module. The sensor modules process the input signals simultaneously into 16-bit samples and wirelessly transfer them to base module using Bluetooth technology. In base module, the samples are combined using time division multiplexing into composite stream and serially forwarded to the host computer. The string buffer is implemented in the sensor module firmware to increase the transfer time, transfer samples in chunks and eliminate the wireless transmission latency. The wireless network is established between modules. The newly implemented firmware results in... 

    Design and implementation of an ultralow-power Ecg patch and smart cloud-based platform

    , Article IEEE Transactions on Instrumentation and Measurement ; Volume 71 , 2022 ; 00189456 (ISSN) Baraeinejad, B ; Shayan, M. F ; Vazifeh, A. R ; Rashidi, D ; Hamedani, M. S ; Tavolinejad, H ; Gorji, P ; Razmara, P ; Vaziri, K ; Vashaee, D ; Fakharzadeh, M ; Sharif University of Technology
    Institute of Electrical and Electronics Engineers Inc  2022
    Abstract
    This article reports the development of a new smart electrocardiogram (ECG) monitoring system, consisting of the related hardware, firmware, and Internet of Things (IoT)-based web service for artificial intelligence (AI)-assisted arrhythmia detection and a complementary Android application for data streaming. The hardware aspect of this article proposes an ultralow power patch sampling ECG data at 256 samples/s with 16-bit resolution. The battery life of the device is two weeks per charging, which alongside the flexible and slim (193.7 mm times62.4 mm times8.6 mm) and lightweight (43 g) allows the user to continue real-life activities while the real-time monitoring is being done without...