Reversible Data Hiding in Encrypted Domain Based on the Error-Correction Redundancy of Encryption Process

Table 2

Huffman probability dictionary with condition m set to 4.

Probable sequence	Character	Huffman code
1	1	1
2	2	[0, 0, 0]
3	3	[0, 1, 1]
…	…	…
356	537	[0, 1, 0, 1, 1, 0, 1, 1, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0]
357	735	[0, 1, 0, 1, 1, 0, 1, 1, 1, 0, 0, 0, 1, 0, 1, 0, 1]