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A Tweakable Enciphering Mode
[chapter]
2003
Lecture Notes in Computer Science
We describe a block-cipher mode of operation, CMC, that turns an n-bit block cipher into a tweakable enciphering scheme that acts on strings of mn bits, where m ≥ 2. When the underlying block cipher is secure in the sense of a strong pseudorandom permutation (PRP), our scheme is secure in the sense of tweakable, strong PRP. Such an object can be used to encipher the sectors of a disk, in-place, offering security as good as can be obtained in this setting. CMC makes a pass of CBC encryption,
doi:10.1007/978-3-540-45146-4_28
fatcat:knioeyfvbrerxglg4niottx3ma