CPC H04L 9/3278 (2013.01) | 12 Claims |
1. A method of identifying primitives for implementing a physical unclonable function providing a response representative of a device,
wherein said device comprises a plurality of primitives coupled in pairs (P1, . . . , P6), wherein the primitives are electronic units,
and wherein said primitives are configured for being one-time programmable by changing their state from a not-programmed state to a programmed state through application of a burning energy to said primitives, the method comprising:
selecting (S1) a subset of the pairs,
assessing (S2) a difference between electrical characteristics values provided by primitives belonging to each pair of said subset,
qualifying (S3) all pairs of primitives for which the assessed difference is higher than a reference threshold, and
identifying (S4) said qualified pairs of primitives, said identifying step comprising a step of programming (S4) at least one primitive of each pair of primitives for which the assessed difference is lower than said reference threshold, by applying a burning energy to said at least one primitive so as to differentiate qualified pairs of primitives from those that are not qualified.
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