Improve Neural Distinguishers of SIMON and SPECK

Table 8

Comparison with using ciphertext pairs and output differences.

Cipher	Data format	k	Rounds	Size of training data	Accuracy (%)
SIMON32/64	SCP	—	10		50.28
	MOD	32	10		61.09
SIMON48/96	SCP	—	11		50.43
	MOD	48	11		61.43
SIMON64/128	SCP	—	12		50.37
	MOD	64	12		69.57

SCP: single ciphertext pair; MOD: multiple output differences.