Abstract. Given (deterministic) ciphers E and E that can encipher messages of l and n bits, respectively, we construct a cipher E∗ = XLS[E, E] that can encipher messages of l + s...
The elastic block cipher design employs the round function of a given, b-bit block cipher in a black box fashion, embedding it in a network structure to construct a family of ciphe...
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...