Data Hiding Based on Mini Program Code

Table 3

Four cases of the module for “1” needs to be “0.”

Case	Cover code		Marked code
	Bits	Modules	Bits	Modules
1	(1, 1, 1)		(1, 0, 1)
2	(0, 1, 1)		(0, 0, 1)
3	(1, 1, 0)		(1, 0, 0)
4	(0, 1, 0)		(0, 0, 0)	—

Note: represents the modified module.