Encryption device

Abstract

and a random shuffling circuit configured to receive N input bits and perform a random shuffling operation on the N input bits, where , and b is a non-negative integer, based on a plurality of layers each including the random data and an even number of multiplexers, to output final shuffling data having a uniform distribution, wherein a total number of multiplexers included in the random shuffling circuit is , each of the K random bits is input to two multiplexers included in one layer, and a number of layers is a smallest integer from among integers greater than or equal to K divided by a largest integer from among integers less than or equal to N / 2.

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