Cryptographic method for protecting an electronic chip against fraud.

摘要

"Cryptographic method for protecting an electronic chip against fraud." The present invention relates to a cryptographic method for protecting an electronic chip against fraud and a device including an electronic chip which is adapted to protect the electronic chip against fraud.The method includes: combining (1) some or all of the input parameters (and ~ m ~) to provide a data item output and 39 = and 39 (~ 1 ~ 39 , and ~ 2 ~,.... And 39 ~ n ~,.... And 39 ~ n ~); (2) change the state of a finite state automaton of a state old to a new state according to the data item and = 39 and 39 ( ~ 1 ~ 39 and ~ 2 ~,..., and 39 ~ n ~,.... And 39 ~ n ~).And calculate (3) a certificate (s) through an output function having at least one state as an input argument of. The device includes: - Equipment Association - a finite state automaton; and output devices to calculate a certificate.