Abstract
Encryption methods such as AES (Advanced Encryption Standard), DES (Data Encryption Standard), etc. cannot be used for image encryption as images contain a huge amount of redundant data, a high correlation between neighboring pixels and size of the image is very large. Chaos- based techniques have suitable properties that are required for image encryption. The properties include sensitivity to initial conditions, pseudorandom number, ergodicity, and density of periodic orbits. In this paper, a survey of image encryption using chaos-maps such as a logistic map, piecewise linear chaotic map (PWLCM), tent map, etc. is done in order to choose best map for image encryption. Comparison of image encryption using different chaotic maps is done by considering parameters such as key-space and correlation analysis.
Highlights
To secure information present in the image from unauthorized user access during transmission and storage, image encryption is used
Chaotic systems exhibit certain properties required for image encryption and decryption, one such property is sensitivity to initial conditions [5], Fig. 1(a) shows the plot of logistic function for two different initial conditions plotted against time versus the value obtained from logistic function, the red line shows the plot of the logistic map when x0 = 0.2, the green line shows the plot of the logistic map when x0 = 0.200001
In [6] the image encryption is performed based on a chaotic system called piece-wise linear chaotic map (PWLCM) to generate two numbers
Summary
Abstract—Encryption methods such as AES (Advanced Encryption Standard), DES (Data Encryption Standard), etc. cannot be used for image encryption as images contain a huge amount of redundant data, a high correlation between neighboring pixels and size of the image is very large. Abstract—Encryption methods such as AES (Advanced Encryption Standard), DES (Data Encryption Standard), etc. Cannot be used for image encryption as images contain a huge amount of redundant data, a high correlation between neighboring pixels and size of the image is very large. Chaosbased techniques have suitable properties that are required for image encryption. The properties include sensitivity to initial conditions, pseudorandom number, ergodicity, and density of periodic orbits. A survey of image encryption using chaos-maps such as a logistic map, piecewise linear chaotic map (PWLCM), tent map, etc. Is done in order to choose best map for image encryption. Comparison of image encryption using different chaotic maps is done by considering parameters such as key-space and correlation analysis
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