US 9,812,640 B2
Complementary resistance switch, contact-connected polycrystalline piezo- or ferroelectric thin-film layer, method for encrypting a bit sequence
Tiangui You, Chemnitz (DE); Heidemarie Schmidt, Dresden (DE); Nan Du, Chemnitz (DE); Danilo Buerger, Dresden (DE); Ilona Skorupa, Dresden (DE); and Niveditha Manjunath, Chemnitz (DE)
Assigned to Helmholtz-Zentrum Dresden-Rossendorf e.V, Dresden (DE)
Filed by Helmholtz-Zentrum Dresden-Rossendorf e. V., Dresden (DE)
Filed on Jul. 16, 2015, as Appl. No. 14/800,785.
Application 14/800,785 is a continuation of application No. 14/761,319, granted, now 9,583,704, previously published as PCT/EP2014/050829, filed on Jan. 16, 2014.
Prior Publication US 2015/0358151 A1, Dec. 10, 2015
Int. Cl. H04L 9/00 (2006.01); H01L 45/00 (2006.01); H01L 31/0749 (2012.01); H01L 27/24 (2006.01); G09C 1/00 (2006.01); H04L 9/06 (2006.01); H03K 19/08 (2006.01); G11C 13/00 (2006.01)
CPC H01L 45/147 (2013.01) [G09C 1/00 (2013.01); G11C 13/0007 (2013.01); H01L 27/2472 (2013.01); H01L 31/0749 (2013.01); H01L 45/065 (2013.01); H01L 45/08 (2013.01); H01L 45/1233 (2013.01); H01L 45/165 (2013.01); H01L 45/1641 (2013.01); H03K 19/08 (2013.01); H04L 9/00 (2013.01); H04L 9/065 (2013.01); H04L 2209/12 (2013.01); Y02E 10/541 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method for encrypting a bit sequence, the method comprising:
switching a resistance element in accordance with a bit sequence, wherein the resistance element is switched into a first resistance state with a first resistance value in the case of a first bit value of a bit of the bit sequence, and wherein the resistance element is switched into a second resistance state with a second resistance value in the case of a second bit value of a bit of the bit sequence, wherein the second resistance value is different than the first resistance value;
selecting a load resistance from a plurality of load resistances having different load resistance values;
generating an electrical signal which is fed to the selected load resistance and to the switched resistance element, such that at least one harmonic of the electrical signal is generated;
determining a quantity that describes the at least one harmonic as a quantity describing the first bit value or the second bit value.