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PUF as secure sensor Disclosure Number: IPCOM000127001D
Publication Date: 2005-Aug-17
Document File: 1 page(s) / 4K

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The Prior Art Database



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Title: PUF as secure sensor

Physical Unclonable Functions (PUFs) are used for security purposes, such as authentication using challenge-response pairs. Traditionally the challenge-response pairs are assumed to be independent of quantities like temperature, pressure, humidity, light etc.. These dependencies of a PUF can be used to measure a particular quantity in a secure way. For example, an optical PUF will shrink or expand depending on the temperature, resulting in a modified speckled pattern. This sensitivity of the output can be used to operate the PUF as a secure sensor, where the measured value of the quantity does not exist in the clear at any moment. A secure sensor can thus be achieved.