Application of Chaotic Maps for B-Spline functions to Robust Image Cryptography

摘要

Image encryption is one of most useful way of securing image data. Traditional data security algorithms are also used over images but due to the bulkiness of image data they are not useful. Chaotic sequences play a very good role in image cryptographic system, due to their high sensitivity to initial condition and other properties. In this paper, B-spline functions of first three orders are studied, explored for their chaotic nature and used for image encryption. The experimental results show the proposed approach is useful for encrypting images using the B-Spline functions as chaotic maps. A subjective analysis shows B-spline Map of first order gives good unintelligible encrypted images.