Impossible Differential Distinguishers of Two Generalized Feistel Structures

Table 4

The (2m-3) rounds differential characteristics of the m-dataline MARS-like structure from the encryption direction for and .

Round/output diff	O	O	…	O		O
1
…			…
		O	…	O	O	O
			…
			…		U
…			…
			…	U	U