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- W2078512400 abstract "Physically unclonable functions (PUF) are commonly used in applications such as hardware security and intellectual property protection. Various PUF implementation techniques have been proposed to translate chip-specific variations into a unique binary string. It is difficult to maintain repeatability of chip ID generation, especially over a wide range of operating conditions. To address this problem, we propose utilizing configurable ring oscillators and an orthogonal re-initialization scheme to improve repeatability. An implementation on a Xilinx Spartan-3e field-programmable gate array was tested on nine different chips. Experimental results show that the bit flip rate is reduced from 1.5% to approximately 0 at a fixed supply voltage and room temperature. Over a 20 <sup xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>°</sup> C-80 <sup xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>°</sup> C temperature range and 25% variation in supply voltage, the bit flip rate is reduced from 1.56% to 3.125×10 <sup xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>-7</sup> ." @default.
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- W2078512400 date "2012-12-01" @default.
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- W2078512400 title "An FPGA Chip Identification Generator Using Configurable Ring Oscillators" @default.
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- W2078512400 doi "https://doi.org/10.1109/tvlsi.2011.2173770" @default.
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