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We have developed a methodology for unique identification of integrated circuits (ICs) that addresses untrusted fabrication and other security problems. The new method leverages nondestructive gate-level characterization of ICs post-manufacturing, revealing the hidden and unclonable uniqueness of each IC. The IC characterization uses the externally measured leakage currents for multiple input vectors...
With some difficulty in making more redundant capacity, only a symmetrically encrypted hash code is embedded in some reversible watermarking schemes, which makes it possible that a dishonest verifier fabricates legal contents. This paper shows that for reversible watermarking, by exploiting a subliminal channel, only a capacity of several more bytes than the length of a hash code is needed to embed...
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