Quantitative Evaluation of Chaotic CBC Mode of Operation
This work addresses security analysis for cryptography applications, but it is incremental as it builds on prior proof of chaotic behavior.
The paper tackles the problem of quantitatively evaluating the chaotic behavior of the cipher block chaining (CBC) mode of operation, developing measures for its level of sensibility and expansivity.
The cipher block chaining (CBC) block cipher mode of operation presents a very popular way of encrypting which is used in various applications. In previous research work, we have mathematically proven that, under some conditions, this mode of operation can admit a chaotic behavior according to Devaney. Proving that CBC mode is chaotic is only the beginning of the study of its security. The next step, which is the purpose of this paper, is to develop the quantitative study of the chaotic CBC mode of operation by evaluating the level of sensibility and expansivity for this mode.