Patent ID: 7924176
Filing Date: 2011-04-12
Classification: G06F

Abstract:
1. An apparatus for enciphering a plurality of n-state symbols with n>2, each n-state symbol assuming one of n states, comprising: a first device with an input to receive a signal representing a first n-state symbol in the plurality of n-state symbols, the plurality of n-state symbols being processed as a block cipher, and an output for generating a signal representing a transformed first n-state symbol; a second device with a first input, a second input and an output, the first input enabled to receive a signal representing a second n-state symbol in the plurality of n-state symbols, the second input enabled to receive the signal representing the transformed n-state symbol and the output generating a signal representing an n-state symbol that is generated in accordance with a first reversible n by n n-state truth table, and wherein: the first reversible n by n n-state truth table is characterized by combining an addition over an n-state Finite Field GF(n) and one or more multiplications over the n-state Finite Field GF(n) not only being a multiplication 1.