Identification of an integrated circuit from its physical manufacture parameters

摘要

The invention concerns an identification method and circuit ( 1 ) of the network type of parameters contained in an integrated circuit chip, comprising a single input terminal ( 2 ) for applying a signal (E) triggering an identification, the output terminals ( 3 ₁ , 3 ₂ , 3 _i-1 , 3 _i , 3 _n-1 , 3 _n) adapted to deliver a binary identifying code (B₁, B₂, B_i-1, B_i, B_n-1, B_n), first electrical paths P₁, P₂, P_i, P_n), individually connecting said input terminal to each output terminal, and means ( 4, 5 ₁ , 5 ₂ , 5 _i , 5 _n) for simultaneously integrating the binary states present in output of the electrical paths, each path inputting a delay sensitive to technological dispersions and/or of the integrated circuit fabrication method.