Highly Secure, Reconfigurable Physically Unclonable Functions(PUFs)Based on Organic Thin-Film Transistors for Cryptography Primitives
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초록
내용
encryption technology for IoT environments. PUFs utilize an unpredictable physical fingerprint originating from variations that are randomly generated during the manufacturing process. In this study, organic thin-film transistors based on solution-processable, polycrystalline organic semiconductor (OSC) thin-films are proposed as highly secure electronic PUF devices. The OSC thin films exhibited inherently unpredictable and unclonable fingerprints with random orientations of multiscale crystalline structures. Especially, a blend of an OSC and polymer materials improved the reliability of OTFT-based PUF. The correlation between the crystalline structure of OSC in the blend films and PUFs characteristics, including uniqueness and randomness, bit-error-rate, were investigated. It was confirmed that the OTFT-based PUF was highly secure and resilient to the machine-learning attack.