A New Chaotic Encryption Scheme Based on Enigma Machine

In this paper, we have proposed a novel encryption scheme with chaotic process based on Enigma. The encryption scheme takes the advantage of the approximate non-linear mechanism of original Enigma, with the chaos controlling the encryption process. It has strengthened the randomness of plaintext replacement and improved the security of the encryption scheme. The results of encrypting images and letters proved that the novel encryption scheme shows good performances in the analysis of key sensitivity related coefficient between adjacent pixels and differential cryptanalysis.