Generation of Encryption Keys from Plasmonics

Abstract : The study of plasmon resonances has shown the possibility to produce complex electromagnetic field patterns, with strong gradients and high confinement, superimposed with interference patterns. These physical effects have open the experimental and theoretical way of designing efficient systems in various new applications (sensors, imaging and burning biomedicine applications, security. . . ) [1-3]. In this contribution, we introduce a new method to generate encryption keys, from the computation of electromagnetic field produced through a plasmonic device. The proposed method is based on a classical computation of the interaction between light and metallic nanomaterials. The computed field is the basis of the production scheme of encryption keys. The cryptographic quality of such a key is related to the number of degrees of freedom of the model and to the description of a resonant phenomenon, involving high sensitivity to numerous parameters [4]. This system is also quantified in term of complexity within the information theory. Here, the key generator consists in an analytical model deduced from the Mie theory for spherical metallic particle including a mesh postprocessing of the whole domain of computation, in order to control spatial positions of the nodes where the field is computed, as well as the spatial distribution of intensity levels [5]. This meshing process is used not only to control the accuracy in the space of representation, but also to homogenize the occurrences of the electromagnetic intensities through a spatial redistribution of intensity levels in respect to criterium of maximum entropy distribution. This whole process assures the key to respect the maximum Shannon's entropy and the statistical characteristics of randomness.
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Submitted on : Tuesday, September 10, 2019 - 12:53:52 PM
Last modification on : Monday, September 16, 2019 - 4:36:04 PM

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  • HAL Id : hal-02282962, version 1

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Michael François, Thomas Grosges, Dominique Barchiesi, Robert Erra. Generation of Encryption Keys from Plasmonics. Progress in Electromagnetics Research Symposium, Proceedings. PIERS 2011, Mar 2011, Marrakesh, Morocco. ⟨hal-02282962⟩

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