Table 4 Ratios of successful extraction under different attacks for sheets
From: Semi-structured data protection scheme based on robust watermarking
Type of attack | Ratios of successful extraction | ||||
|---|---|---|---|---|---|
File1.csv (size: 500×23) | File2 .csv (size: 1000×6) | File3 .csv (size: 2000×2) | File4 .csv (size: 5000×38) | ||
No Attack | 10/10 | 10/10 | 10/10 | 10/10 | |
Sorting | 10/10 | 10/10 | 10/10 | 10/10 | |
Row deletion | Pdr = 20% | 10/10 | 10/10 | 10/10 | 10/10 |
Pdr = 40% | 10/10 | 10/10 | 10/10 | 10/10 | |
Pdr = 60% | 10/10 | 10/10 | 10/10 | 10/10 | |
Pdr = 80% | 10/10 | 10/10 | 10/10 | 10/10 | |
Value modification | Pm = 20% | 10/10 | 10/10 | 10/10 | 10/10 |
Pm = 40% | 10/10 | 10/10 | 10/10 | 10/10 | |
Pm = 60% | 10/10 | 10/10 | 10/10 | 10/10 | |
Pm = 80% | 10/10 | 10/10 | 10/10 | 10/10 | |
Row insertion | Pir = 10% | 10/10 | 10/10 | 10/10 | 10/10 |
Pir = 20% | 10/10 | 10/10 | 10/10 | 10/10 | |
Column insertion | li = 1 | 10/10 | 5/10 | 4/10 | 10/10 |
li = 5 | 9/10 | 1/10 | 0/10 | 8/10 | |