Security and Communication Networks

Research Article

Improve Neural Distinguishers of SIMON and SPECK

Table 7

Comparison of SPECK using different data format.


Cipher	Data format	Rounds	Input difference	Accuracy (%)	Source

SPECK32/64	SCP	7		61.6	[7]
	MCP	7		70.74¹	[12]
	MOD²	7		88.87	Section 4
	SCP	8		51.4	[7]
	MOD²	8		56.49	Section 4

SIMON48/96	MCP	5	—³	—	[15]
SIMON48/96	MOD⁴	7		63.43	Section 4

SIMON64/128	MOD⁵	8		63.20	Section 4

SCP: single ciphertext pair; MCP: multiple ciphertext pairs; MOD: multiple output differences. ¹The highest accuracy of 7-round SPECK32/64 in [12]. ² = 32. ³Chen et al. used 5-round neural distinguisher to attack SPECK48/x, but the accuracy was not presented in [15]. ⁴ = 48. ⁵ = 64.