Bio-Metric Based Colour-Image-Encryption using Multi-Chaotic Dynamical Systems and SHA-256 Hash Algorithm

ABSTRACTABSTRACTThis paper proposes a user-biometric-based image encryption using chaotic dynamical systems, SHA-256 hash function, and zigzag transformation. Three chaotic systems, namely, the Henon map, logistic map, and Lorenz system, are used to apply the chaotic properties to the encryption system. The hash value of the user biometric image is used to generate the initial value of the Henon map. The initial values for the logistic map and Lorenz system are generated from the hash value of the plain image. SHA-256 hash algorithm generates the hash values of the biometric and plain images. The plain image is scrambled using the two-dimensional chaotic values generated by the Henon map first. Next, the first scrambled image's pixels are XORed with the one-dimensional chaotic values generated from the logistic map and produce the second scrambled image. Finally, take the second scrambled image's pixels, and XOR them with the three-dimensional chaotic values generated from the Lorenz system and create the final encrypted image. The robustness and flexibility of the encryption system are analyzed using various security and performance analyses. The experiment results are compared with the existing algorithms to prove the efficiency of the proposed algorithm.KEYWORDS: image encryptionChaotic systemsencryption analysishash valueszig-zag traversal AcknowledgmentsThis research work has been written with the support of Rashtriya Uchchatar Siksha Abhiyan (RUSA- Phase 2.0), Policy(TNMulti-Gen), Dept. Of Edn. Govt. Of IndiaDisclosure statementNo potential conflict of interest was reported by the author(s).Additional informationNotes on contributorsB. RahulB.Rahul, Ph. D Research Scholar, Department of Computer Science, Alagappa University, Karaikudi, Tamil Nadu, India. I have completed MPhil, MSc, BSc degrees in Computer Science. My area of research interest is information security, image encryption, cloud security and design of algorithms. I have published 3 papers in international journals. Moreover, I have presented in 2 International conferences Email: rahul.rahul.b9@gmail.comK. KuppusamyDr. K. Kuppusamy, Research supervisor, Formerly Professor & Head (i/c), Department of Computational Logistics, Alagappa University, Karaikudi, Tamil Nadu, India. He has completed an M.Sc, M.Phil, M.C.A, B.Ed, PGDOR, Ph. D degrees. He has 32 years of teaching and 17 years of research experience. His area of specialization and research interests are Information / Network Security, Algorithms, and Software Engineering. He has guided 9 Ph.D. students, 39 MPhil students, 7 MPhil (DDE) and 2 M.Tech students, and ongoing 5 Ph.D. students. He has research publications in 99 International journals and 10 national journals. Moreover, he has presented in 32 International conferences and 42 National conferences. He has a publication in 1 Book and 5 Book Chapters. Email: ksamyk@alagappauniversity.ac.inA. SenthilrajanDr. A. Senthilrajan, Director, Professor & Head(i/c), Department of Computational Logistics, Alagappa University, Karaikudi, Tamil Nadu, India. He has completed PhD, M.Sc, M.Phil, MBA, B.E, degrees. He has 19 years of teaching and 7 years of research experience. His area of specialization and research interests are Image Processing, Networks and Artificial Intelligence. He has guided 3 Ph.D students, 6 M.Phil Students and ongoing 8 PhD students. He has research publications in 23 International journals and 1 national journal. Moreover, he has presented in 25 international conferences and 11 national conferences. He has a publication in 4 Book Chapters. Email: senthilrajana@alagappauniversity.ac.in