Research Article
A Novel Security Methodology for Smart Grids: A Case Study of Microcomputer-Based Encryption for PMU Devices
Table 3
ENT test results for
, and
outputs.
| Statistical tests | y (8)-the last 8 bits | z (16)-the last 16 bits | u (8) | (16) | Ideal results | Results |
| Arithmetic mean | 127.3353 | 127.1994 | 127.322 | 127.3249 | 127.5 | Successful | Entropy | 7.9985 | 7.9985 | 7.9985 | 7.9985 | 8 | Successful | Correlation | −0.0051725 | 0.0031184 | 0.0030067 | −0.00061494 | 0.0 | Successful | Chi-square | 253.6648 | 265.2769 | 262.594 | 252.6899 | 190–300 | Successful | Monte Carlo | 3.1396 | 3.149 | 3.1383 | 3.1352 | 3.14159 | Successful | Error = −0.00062338 | Error = 0.0023713 | Error = −0.0010512 | Error = −0.0020291 | (Pi) |
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