Theses and Dissertations from UMD

Permanent URI for this communityhttp://hdl.handle.net/1903/2

New submissions to the thesis/dissertation collections are added automatically as they are received from the Graduate School. Currently, the Graduate School deposits all theses and dissertations from a given semester after the official graduation date. This means that there may be up to a 4 month delay in the appearance of a give thesis/dissertation in DRUM

More information is available at Theses and Dissertations at University of Maryland Libraries.

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    Synergistic Configurable Ring Oscillator PUF: Design, Characterization, and Implementation
    (2014) Lai, Khai Vinh; Qu, Gang; Electrical Engineering; Digital Repository at the University of Maryland; University of Maryland (College Park, Md.)
    Silicon Physical Unclonable Function (PUF) is a novel hardware primitive that uses the intrinsic variation of integrated circuit manufacturing process for various security applications. Ring oscillator PUF (RO PUF) is one of the most popular silicon PUFs due to its ease of implementation on both ASIC and FPGA. However, RO PUF can have severe reliability issues when the operating environment deviates from the normal environment and security issues when it lacks an efficient anti-cloning mechanism. In this work, we propose a novel approach to build reliable RO PUF efficiently and enhance its resistance against physical cloning attack. The key idea of our approach is to construct ring oscillators with carefully selected inverters during the testing phase after the chip is fabricated. Our experimental results show that our configurable approach outperforms the traditional RO PUF and 1-out-of-8 PUF by generating more reliable bits that pass the NIST randomness tests. Our approach is also more hardware efficient than these RO PUFs. We also demonstrate that the configuration vectors can prevent physical cloning and have the potential usage in chip-dependent applications such as device authentication.
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    Studio Metamorphosis: A Performance Studio for Georgetown
    (2008) Chen, Anita Bui-Yu; Ambrose, Michael A; Architecture; Digital Repository at the University of Maryland; University of Maryland (College Park, Md.)
    Studio Metamorphosis explores the physical and psychological transformation of performance architecture. The performance theater is a threshold into the world of the narrative. It has a dual role of an actor and spectator. The actor takes on a physical transformantion of each narrative. The building and all its parts becomes a costume and physical embodiment of the charactor. The theater is also a spectator. As spectator, the theater suspends reality and allows for the world of the narrative to take over. This psychological canvas upon allows the world of the performance comes to life.