Cryptanalysis of a Chaotic Neural Network Based Multimedia Encryption Scheme

Recently, Yen and Guo proposed a chaotic neural network (CNN) for signal encryption, which was suggested as a solution for protection of digital images and videos. The present paper evaluates the security of this CNN-based encryption scheme, and points out that it is not secure from the cryptographical point of view: 1) it can be easily broken by known/chosen-plaintext attacks; 2) its security against the brute-force attack was much over-estimated. Some experiments are shown to support the results given in this paper. It is also discussed how to improve the encryption scheme.

• Type: Conference
• Year: 2004
• Where: PCM
• Authors: Chengqing Li, Shujun Li, Dan Zhang, Guanrong Chen
• Keywords: Chaotic Neural Network, CNN-based Encryption Scheme, Encryption Scheme, Multimedia, PCM 2004