Breaking row-column shuffle based image cipher
Weihai Li, Yupeng Yan, Nenghai Yu · 2012
In this paper, a redundancy based cipher-only attack is proposed to break row-column shuffle based image encryption algorithms, which are considered to be safe under cipher-only attack before although it is well known that they are fragile under known-plaintext attack. This attack is carried out on the shuffle operations itself by analyzing the redundancy remained in cipher image, and doesn't care how the shuffle tables are generated. So, no matter how the shuffling tables are generated, this attack is valid. Experimental results show high quality deciphered images from one single cipher image, and that demonstrate the validity of our attack method. This attack method is also a potential threat to shuffle-scramble combined encryptions.