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Proving chaotic behaviour of CBC mode of operation (1608.05838v1)
Published 20 Aug 2016 in cs.CR and math.DS
Abstract: The cipher block chaining (CBC) block cipher mode of operation was invented by IBM (International Business Machine) in 1976. It presents a very popular way of encrypting which is used in various applications. In this paper, we have mathematically proven that, under some conditions, the CBC mode of operation can admit a chaotic behaviour according to Devaney. Some cases will be properly studied in order to put in evidence this idea.