Performance analysis of transformation and bogdonov chaotic substitution based image cryptosystem
| Autor: | S N Prajwalasimha, L. Basavaraj |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
General Computer Science
Computer science 0211 other engineering and technologies Chaotic Encryption 02 engineering and technology Image (mathematics) Hadamard transform 0202 electrical engineering electronic engineering information engineering Cryptosystem Electrical and Electronic Engineering Computer Science::Cryptography and Security 021110 strategic defence & security studies Sequence business.industry 020208 electrical & electronic engineering Substitution (logic) Chaotic generator Correlation Transformation (function) Computer Science::Computer Vision and Pattern Recognition business Algorithm Substitution Confidentiality |
| Popis: | In this article, a combined Pseudo Hadamard transformation and modified Bogdonav chaotic generator based image encryption technique is proposed. Pixel position transformation is performed using Pseudo Hadamard transformation and pixel value variation is made using Bogdonav chaotic substitution. Bogdonav chaotic generator produces random sequences and it is observed that very less correlation between the adjacent elements in the sequence. The cipher image obtained from the transformation stage is subjected for substitution using Bogdonav chaotic sequence to break correlation between adjacent pixels. The cipher image is subjected for various security tests under noisy conditions and very high degree of similarity is observed after deciphering process between original and decrypted images. |
| Databáze: | OpenAIRE |
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