Improve Neural Distinguishers of SIMON and SPECK

Table 11

SPECK parameters.

Block size	Key size	Word size	Rot	Rot	Rounds
32	64	16	7	2	22
48	72	24	8	3	22
	96	24	8	3	23
64	96	32	8	3	26
	128	32	8	3	27
96	96	48	8	3	28
	144	48	8	3	29
128	128	64	8	3	32
	192	64	8	3	33
	256	64	8	3	34