L-Ary Based General Attacks on Permutation-Only Image/Video Ciphers
Xin Ge, Bin Lu, Xiaoyong Zhang, Jie Ren · Applied Mechanics and Materials · 2014
For the recovery of an plaintext with different levels of values encrypted by permutation-only multimedia ciphers, a L-ary based chosen text construction method is first proposed in this paper. And plaintexts are created to reach the lower bound of the plaintext number required for chosen plaintext attacks which is given by Li et al. Then based on the created plaintexts, two attacks are proposed on permutation-only image/video ciphers. Finally the validity of the two attacks is proved by Proposition 2 and Proposition 3 respectively.