Research Article
A Novel Security Methodology for Smart Grids: A Case Study of Microcomputer-Based Encryption for PMU Devices
Table 2
RNG NIST-800-22 test results for
, and
outputs.
| Statistical tests | y (8) | z (16) | u (8) | (16) |
| Frequency (Monobit) test | 0.2142 | 0.9712 | 0.2974 | 0.0945 | Block frequency test | 0.7545 | 0.7000 | 0.0581 | 0.4610 | Cumulative sum test | 0.3829 | 0.4886 | 0.3897 | 0.1016 | Runs test | 0.6075 | 0.9904 | 0.8611 | 0.8342 | Longest run test | 0.4854 | 0.9275 | 0.9225 | 0.4248 | Binary matrix rank test | 0.7728 | 0.1876 | 0.5529 | 0.2004 | Discrete Fourier transform test | 0.1323 | 0.9414 | 0.4140 | 0.0289 | Nonoverlapping templates’ test | 0.3973 | 0.0168 | 0.0202 | 0.0533 | Overlapping templates’ test | 0.5982 | 0.8957 | 0.5830 | 0.7414 | Maurer’s universal statistical test | 0.2457 | 0.7903 | 0.3924 | 0.7780 | Approximate entropy test | 0.7247 | 0.9430 | 0.9008 | 0.6912 | Random excursion test | 0.2953 | 0.6938 | 0.8843 | 0.4569 | Random excursion variant test | 0.6888 | 0.6522 | 0.6050 | 0.3386 | Serial test-1 | 0.6993 | 0.9187 | 0.0464 | 0.8103 | Serial test-2 | 0.2423 | 0.4510 | 0.0129 | 0.9127 | Linear complexity test | 0.9728 | 0.2036 | 0.6666 | 0.6098 |
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