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Title: Data encryption using chaotic mechanical system vibration response signals
Authors: Sim, Ivan Wan Leong
Keywords: Engineering::Mathematics and analysis::Simulations
Issue Date: 2020
Publisher: Nanyang Technological University
Project: B135
Abstract: This project aims to create a chaotic mechanical system by using a mass-spring-damper system with an added cubic spring stiffness term and a fractional derivative term. The system will be iterated for the vibration response when an external sinusoidal force is applied to the system. Approximation to the fractional derivative will be carried out to reduce computational time and optimize the encryption process. Follow by the analysis of the vibration response for chaotic behavior using Poincare maps and frequency spectrums plot from Fast Fourier Transform. The chaotic response will be used to encrypt an image of an apple. Various methods of encryption and decryption will be explored such as XOR operation, bits inverting and swapping in order to scramble the image. Lastly, the encryption effectiveness will be assessed by visually comparison and using the statistical correlation value and the project concluded with the image encrypted successfully.
Schools: School of Mechanical and Aerospace Engineering 
Fulltext Permission: restricted
Fulltext Availability: With Fulltext
Appears in Collections:MAE Student Reports (FYP/IA/PA/PI)

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