Berlin 2015 – scientific programme
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DS: Fachverband Dünne Schichten
DS 36: Poster Session I
DS 36.99: Poster
Thursday, March 19, 2015, 09:30–12:00, Poster A
A memristor-based hardware cryptography — •N. Du1, N. Manjunath1, Y. Shuai2, D. Buerger1, I. Skorupa1, R. Schueffny3, C. Mayr4, D. N. Basov5, M. Di Ventra5, O. G. Schmidt1,6, and H. Schmidt1 — 1TU Chemnitz — 2UESTC — 3TU Dresden — 4University of Zurich and ETH Zurich — 5University of California — 6IFW Dresden
With the rise of big data handling, new solutions are required to drive cryptographic algorithms for maintaining data security. Here we exploit the nonvolatile, nonlinear resistance change in BiFeO3 memristors [1] by applying a voltage for the generation of second and higher harmonics and develop a new memristor-based encoding system [2] from it to encrypt and obfuscate data. It is found that a BiFeO3 memristor in high and low resistance state can be used to generate two clearly distinguishable sets of second and higher harmonics as recently predicted theoretically [3]. The computed autocorrelation of encrypted data (0, 1) using higher harmonics generated by a BiFeO3 memristor (LRS, HRS) shows that the encoded data distribute randomly.
[1] Y. Shuai, X. Ou, W. B. Luo, N. Du, C. Wu, W. Zhang, D. Bürger, C. Mayr, R. Schüffny, S. Q. Zhou, M. Helm, H. Schmidt, IEEE Elec.Dev. Lett. 34, 54-56 (2013). [2] N. Du, N. Manjunath, Y. Shuai, D. Bürger, I. Skorupa, R. Schüffny, C. Mayr, D. N. Basov, M. Di Ventra, O. G. Schmidt, H. Schmidt, J. Appl. Phys. 115, 124501 (2014) [3] G.Z. Cohen, Y. V. Pershin, M. D. Ventra, Appl. Phys. Lett. 100, 133109 (2012).