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The Substitution Cipher Chaining Mode

In this paper, we present a new tweakable narrow-block mode of operation, the Substitution Cipher Chaining mode (SCC), that can be efficiently deployed in disk encryption applications. SCC is characterized by its high throughout compared to the current solutions and it can be parallelized. We used this mode to modify Windows Vista’s disk encryption algorithm, to offer some parallelism in its original implementation and to improve its diffusion properties.