Unveiling the Neutral Difference and Its Automated Search

Table 6

The subspace for 2-round differential of SPECK32, which is spanned by the first 29 linearly independent neutral differences with non-zero neutral probabilities.

No.	Neutral diff.						No.	Neutral diff.
				EST	EXP						EST	EXP
1				1.00	1.00	1.00	17			173	0.75	0.75	1.00
2			10	1.00	1.00	1.00	18			65	0.75	0.75	1.00
3			38	1.00	1.00	1.00	19			22	0.75	0.75	1.00
4			7	1.00	1.00	1.00	20			22	0.50	0.50	1.00
5			13	1.00	1.00	1.00	21			102	0.75	0.75	1.00
6			70	1.00	1.00	1.00	22			256	0.45	0.49	1.00
7			256	0.93	0.98	1.00	23			22	0.50	0.50	0.52
8			256	0.83	0.98	1.00	24			16	0.50	0.50	0.50
9			256	0.93	0.97	1.00	25			9	0.25	0.25	0.50
10			256	0.86	0.97	1.00	26			27	0.50	0.50	0.49
11			256	0.62	0.94	1.00	27			8	0.50	0.50	0.00
12			256	0.93	0.94	1.00	28			2	0.50	0.50	0.00
13			93	0.88	0.87	1.00	29			9	0.50	0.50	0.00
14			256	0.87	0.88	1.00	30				No	No	No
15			256	0.85	0.88	1.00	31				No	No	No
16			256	0.78	0.88	1.00	32				No	No	No

The notations are the same as Table 4.