The Study on Image Encryption Algorithm Based on 3D Chaotic Map Integration with Permutation,Mixing and Masking Rule
Ya Yin · Science Technology and Engineering · 2014
To these lacks of image encryption of current 3D chaotic map such as low security,low encryption speed,small key space and not having the ability for resisting multi-attacks,the three rules,including permutation rule,mixing rule and masking rule were designing,and the new image encryption algorithm based on 3D chaotic map integration with permutation,mixing and masking rule was proposed to solve above defects.Firstly,the advance permutation of bytes from the original image was started to get the bitmap;Then the bitmap was separated into several blocks,the array was obtained by iterating the 3D chaotic map under the shuffled rule,and the array was used to choose blocks to permute the pixel position;Secondly,a pseudo-random numbers was obtained by iterating the 3D chaotic map under the mixing rule to mixing the pixel value of the permutation image;Finally,the sequence of triples of numbers was got by iterating the 3D chaotic map under the masking rule to mask the encryption blocks.The MATLAB simulation software was used to validate the encryption algorithm proposed,the results showed that:this image encryption algorithm has a good encryption property such as highly secure,huge key space,and fast encryption speed.