Abstract
In this research paper, we proposed a new method for image encryption through using chaotic function and graph theory. In this technique, we used a graph for making the coding algorithm more complicated with higher security and changing the gray value of the original image. Experimental results denote that the method benefit from high efficiency against prevalent attacks; for example, the obtained entropy value is 7.9911 that is very close to ideal value of 8.KeywordsImage encryptiongraphchaotic function
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