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Model Building And Security Analysis Of Puf-Based Authentication, Wenjie Che
Model Building And Security Analysis Of Puf-Based Authentication, Wenjie Che
Electrical and Computer Engineering ETDs
In the context of hardware systems, authentication refers to the process of confirming the identity and authenticity of chip, board and system components such as RFID tags, smart cards and remote sensors. The ability of physical unclonable functions (PUF) to provide bitstrings unique to each component can be leveraged as an authentication mechanism to detect tamper, impersonation and substitution of such components. However, authentication requires a strong PUF, i.e., one capable of producing a large, unique set of bits per device, and, unlike secret key generation for encryption, has additional challenges that relate to machine learning attacks, protocol attacks and …
Development Of Metal Matrix Composite Gridlines For Space Photovoltaics, Omar K. Abudayyeh
Development Of Metal Matrix Composite Gridlines For Space Photovoltaics, Omar K. Abudayyeh
Chemical and Biological Engineering ETDs
Space vehicles today are primarily powered by multi-junction photovoltaic cells due to their high efficiency and high radiation hardness in the space environment. While multi-junction solar cells provide high efficiency, microcracks develop in the crystalline semiconductor due to a variety of reasons, including: growth defects, film stress due to lattice constant mismatch, and external mechanical stresses introduced during shipping, installation, and operation. These microcracks have the tendency to propagate through the different layers of the semiconductor reaching the metal gridlines of the cell, resulting in electrically isolated areas from the busbar region, ultimately lowering the power output of the cell …