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This paper proposes a blockcipher mode of operation, HCTR, which is a length-preserving encryption mode. HCTR turns an n-bit blockcipher into a tweakable blockcipher that supports ...
Whereas a block cipher enciphers messages of some one particular length the blocklength, a variable-input-length cipher takes messages of varying and preferably arbitrary leng...
Tweakable enciphering schemes are length preserving block cipher modes of operation that provide a strong pseudo-random permutation. It has been suggested that these schemes can b...