Physical Unclonable Functions by Dewetting of Polymer Solution
발표자
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초록
내용
Optical authentication systems based on physical unclonable functions (PUFs) offer promise, using inherent randomness to create virtually unbreakable cryptographic keys. However, converting analog signals to digitized codes through statistical image processing can compromise accuracy due to arbitrary thresholds. To overcome this, computer vision techniques have been explored, but their adoption introduces inconvenience in the authentication process. In this study, we present a geometric multi-bit patterning technique using dewetting phenomena in polymer solutions to create highly random yet deterministic PUF patterns, addressing the reliability issue. The generated patterns exhibit exceptional uniqueness, uniformity, and reliability. By stacking layers with different information or reconfigurable patterns, the system's security can be further enhanced. This innovative approach offers a simple, low-cost, and widely applicable solution for robust anti-counterfeiting applications.