New Image Encryption Method Based on Fractional Order Chen System
Shao Yong-hu · Science Technology and Engineering · 2014
A new image encryption algorithm is proposed based on fractional order Chen system.The fractional order Chen system produces the scrambling sequence which is required firstly.Then the selection of the scrambling sequence of row and column is completed through the judgment of the plaintext message,which ensures that it is associated with the plaintext.After preprocessing the pixel values of the scrambling image by using the algorithm of grouping XOR,Two rounds of encryption are used in the pretreatment image,which increases the complexity and security of the algorithm.Finally the comparison with the integer order Chen system algorithm shows that the algorithm has a low correlation to the ciphertext,larger key space and higher security.