Cryptanalysis of a computer cryptography scheme based on a filter bank

This paper analyzes the security of a recently-proposed signal encryption scheme based on a filter bank. A very critical weakness of this new signal encryption procedure is exploited in order to successfully recover the associated secret key.

💡 Research Summary

The paper conducts a thorough cryptanalysis of the chaotic filter‑bank encryption scheme proposed in Ling et al., Chaos Solitons and Fractals 34 (2007) 817–824. The authors first restate the encryption process: a plaintext signal x