Application of MDA Secret-code Algorithm and Its Cryptanalysis and Amelioration

A new method based on disorder information secret-code is proposed in this paper. Combined with recursion operation, an encrypting and decrypting based on MDA disorder information are designed. A random unlikeness chaotic sequence is created with random function. Mirror image transforms with this chaotic sequence, then the information is transformed to secret-code files by this sequence. The decrypting operation is the reverse of encrypting. The results indicate that the proposed algorithm can get satisfying effect. The characteristics of algorithm are summarized and the aspects of the subsequent work are prospected.