A new color image cryptosystem via hyperchaos synchronization

作者：Wu Xiangjun^*; Bai Chenxi; Kan Haibin

来源：Communications in Nonlinear Science & Numerical Simulation, 2014, 19(6): 1884-1897.

DOI：10.1016/j.cnsns.2013.10.025

• Color image cryptosystem
• Six-dimensional hyperchaotic system
• Synchronization
• Substitution
• Permutation
• Security analysis
• Attack

This paper proposes a novel color image cryptosystem based on synchronization of two different six-dimensional hyperchaotic systems. In the transmitter end, we apply the drive system to generate the diffusion matrices and scrambling ones, which are used to change the image pixel value and position, respectively. Thus the ciphered image is obtained. In the receiver, synchronization of two nonidentical hyperchaotic systems can be achieved by designing the appropriate controllers. The response system is employed to yield the corresponding diffusion matrices and scrambling ones using the same generation method in the encryption algorithm. Then the cipher-image can be decrypted by the decryption algorithm, which is similar to that of the encryption process but in the reversed order. The experimental results show that the presented image cryptosystem has high security and can resist noise and crop attacks.

• 出版日期2014-6
• 单位复旦大学; 河南大学