| 摘要 |
The invention relates to a token (100), to an integrated circuit (200) comprising the token, to a method of randomizing the token and a system (500, 502) for randomizing the token. The token comprises a physical unclonable function (10, 12, 14, 16, 18) and comprising probing means (110) for probing the physical unclonable function. The physical unclonable function comprises a capacitor (20, 22) comprising a dielectric medium (30, 32) being arranged at least partially between the electrodes (20A, 20C; 22A, 22C) of the capacitor. The dielectric medium is configured for contributing to a capacitance value of the capacitor and comprises conducting particles (40, 42; 40A, 40B, 40C) substantially randomly dispersed in the dielectric medium. The conducting particles comprise a phase changeable material being changeable between a first structural state (40A, 40C) having a first conductivity and a second structural state (40B) having a second conductivity different from the first conductivity. |
