Protection of Sensitive Data in Industrial Internet Based on Three-Layer Local/Fog/Cloud Storage

Table 1

Degree of difficulty for cracking encoding matrix.

Word size of Galois field	Number of source data blocks k	Number of redundant data blocks m	Cracking time
8	6	1	2^48
8	6	2	2^96
16	6	1	2^96
16	6	2	2^192