Method for determining an encryption key associated with an integrated circuit

摘要

PCT No. PCT/FR96/01446 Sec. 371 Date Aug. 7, 1998 Sec. 102(e) Date Aug. 7, 1998 PCT Filed Sep. 18, 1996 PCT Pub. No. WO97/11442 PCT Pub. Date Mar. 27, 1997A method and an apparatus for determining an encryption key associated with an integrated circuit having a memory plane that includes a matrix of electric contacts on it's surface and a layer of inhomogeneous electric resistivity material disposed on the matrix. An encryption key is determined by the integrated circuit on the basis of the random distribution of the electrical resistances connecting the various electric contacts of the matrix.