An Image Encryption Algorithm based on Perturbing High-dimension Chaotic Maps
Qing Dai · Information Security and Communications Privacy · 2011
To solve the problem in existing image encryption algorithms based on chaotic system,a new image encryption algorithm based on perturbing high-dimension chaotic maps is designed.The new algorithm improves the random character of the Lorenz chaotic system by appending a new chaotic system to it.3-D cat map is employed to scramble the diffused image,and thus to enhance the security of the new algorithm by scrambling twice.Analysis and simulation results show that the key space of the algorithm is large enough to resist the strong attack,and the pixel-value distribution of the encrypted image has a random-like behavior,and the values of adjacent pixels satisfy zero correlation.And thus it could effectively resist the image-known attack.