Algorithm of Digital Image Encrypting Based on Multi-chaotic Sequence Generated by Rational Bézier Surface
Zhang Yong-hon · 2015
In this paper,an implementation of digital image encryption scheme based on the multi-chaotic system generated by rational Bezier surface was proposed.Firstly,many initial conditions of Logistic chaotic system are generated by using the external secret key of 8t-bit,and many Logistic chaotic sequences are generated.Then the multi-chaotic matrix is generated based on rational Bezier surface.Secondly,the XOR operation between plain-image and chaotic matrix is applied.Finally,the chaotic address set is generated by using the multi-chaotic matrix,and then the permutation is given by using this chaotic address set.The algorithm has the advantage that both diffusion and scrambling are operated by using the multi-chaotic sequence.The results of several experimental,statistical analysis and key sensitivity tests show that the proposed image encryption scheme provides an efficient and secure way for real-time image encryption and transmission.