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Title

Chaotic image encryption using hopfield and hindmarsh–rose neurons implemented on FPGA

AuthorsTlelo-Cuautle, E.; Díaz-Muñoz, Jonathan Daniel; González-Zapata, Astrid Maritza; Li, Rui; León-Salas, Walter Daniel; Guillén-Fernández, Omar; Cruz-Vega, Israel
Issue Date2020
PublisherMolecular Diversity Preservation International
CitationSensors 20 (2020)
AbstractChaotic systems implemented by artificial neural networks are good candidates for data encryption. In this manner, this paper introduces the cryptographic application of the Hopfield and the Hindmarsh–Rose neurons. The contribution is focused on finding suitable coefficient values of the neurons to generate robust random binary sequences that can be used in image encryption. This task is performed by evaluating the bifurcation diagrams from which one chooses appropriate coefficient values of the mathematical models that produce high positive Lyapunov exponent and Kaplan–Yorke dimension values, which are computed using TISEAN. The randomness of both the Hopfield and the Hindmarsh–Rose neurons is evaluated from chaotic time series data by performing National Institute of Standard and Technology (NIST) tests. The implementation of both neurons is done using field-programmable gate arrays whose architectures are used to develop an encryption system for RGB images. The success of the encryption system is confirmed by performing correlation, histogram, variance, entropy, and Number of Pixel Change Rate (NPCR) tests.
Publisher version (URL)http://dx.doi.org/10.3390/s20051326
URIhttp://hdl.handle.net/10261/216763
Identifiersdoi: 10.3390/s20051326
issn: 1424-8220
Appears in Collections:(IMSE-CNM) Artículos
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