Revisiting Impossible Differential Distinguishers of Two Generalized Feistel Structures

Table 1

Known results on impossible differentials of -dataline CAST256-like and MARS-like structures.

			Source
			[13]
—	—		[19]
	—	—	[17]
			[18]
			Ours

where R denotes the primitive index of P and ∧0 = min{R − 2, m − 3}, ∧1 = min{R − 3, m − 3}.