期刊
JOURNAL OF APPLIED PHYSICS
卷 115, 期 12, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4869262
关键词
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资金
- BMWi-ZIM [VP2999601ZG2]
- Deutsche Forschungs gemeinschaft [SCHM 1663/4-1, BU 2956/1-1]
- Networking Fund of the Helmholtz Association [VH-VI-422]
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 [Shuai et al., J. Appl. Phys. 109, 124117 (2011)] by applying a voltage for the generation of second and higher harmonics and develop a new memristor-based encoding system 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 [Cohen et al., Appl. Phys. Lett. 100, 133109 (2012)]. The computed autocorrelation of encrypted data using higher harmonics generated by a BiFeO3 memristor shows that the encoded data distribute randomly. (C) 2014 AIP Publishing LLC.
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