Feistel Network Image Encryption Algorithm Based on Chaotic Map and S-box
Di Xiao · 2009
With the developing of the computer network and the diversifying of the digital information,it has put forward new challenge to the technology of the information secrecy because the traditional encryption method can not meet the requirement.The research was made to find new encryption algorithm for special data.A novel feistel network image encryption algorithm was proposed based on chaotic map and dynamical S-box.In each round of encryption,firstly chaos maps were employed to permute and diffuse pixels,then the dynamical S-box was used for pixels substitution.Sub-keys generated via simple extension of secret key was applied for different sub-encryption process respectively.Theoretical analysis and simulated experiment show that the proposed algorithm is very sensitive to initial condition and the diffusion and confusion properties of the algorithm are very idea1.The scheme can effectively resist differential analysis,statistic analysis and chosen plain image attack.