Cryptanalyzing a RGB image encryption algorithm based on DNA encoding and chaos map
This work exposes critical security vulnerabilities in a specific image encryption method, which is incremental as it builds on prior cryptanalysis.
The paper re-evaluated a RGB image encryption algorithm based on DNA encoding and chaos map, finding it can be broken efficiently with only one known plain-image, compared to the previously reported requirement of four pairs of chosen plain-images, as supported by theoretical analysis and experimental results.
Recently, a RGB image encryption algorithm based on DNA encoding and chaos map has been proposed. It was reported that the encryption algorithm can be broken with four pairs of chosen plain-images and the corresponding cipher-images. This paper re-evaluates the security of the encryption algorithm, and finds that the encryption algorithm can be broken efficiently with only one known plain-image. The effectiveness of the proposed known-plaintext attack is supported by both rigorous theoretical analysis and experimental results. In addition, two other security defects are also reported.