The dynamics of the CBC Mode of Operation

10 May 2016  ·  Abidi Abdessalem FEMTO-ST, Guyeux Christophe FEMTO-ST, Bouna Bechara Al, Bouallègue Belgacem, Machhout Mohsen ·

In cryptography, the Cipher Block Chaining (CBC), one of the most commonly used mode in recent years, is a mode of operation that uses a block cipher to provide confidentiality or authenticity. In our previous research work, we have shown that this mode of operation exhibits, under some conditions, a chaotic behaviour... We have studied this behaviour by evaluating both its level of sensibility and expansivity. In this paper, we intend to deepen the topological study of the CBC mode of operation and evaluate its property of topological mixing. Additionally, other quantitative evaluations are performed, and the level of topological entropy has been evaluated too. read more

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Cryptography and Security


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