Quantitative evaluation of chaotic CBC mode of operation

The cipher block chaining (CBC) block cipher mode of operation presents a very popular way of encrypting which is used in various applications. In our previous research work, we have mathematically proven that, under some conditions, this mode of operation can admit a chaotic behavior according to Devaney. In this paper, we have developed the quantitative study of this chaotic CBC mode of operation by evaluating both its level of sensibility and expansivity.