KiHoLee
3529ab1918
Resource-match the OMA reference in the key-length sweep (oma_ser_keylen), which gives it the L/16 combining gain the longer frame allows. The proposal now passes a resource-matched OMA by 1.27x at L=64 rather than the 4.3x reported against a fixed-d reference. Densify the JSR, sensitivity, and brute-force grids so the curves are smooth, give the index cipher its channel floor instead of error-free reception, and add the permutation-key known-plaintext attack (exp_permkpa) so Fig. 7 carries a conventional linear scheme. Add check_cov_attack.py and check_cov_ceiling.py: a referee raised a ciphertext-only second-order attack; the exact-population test shows the received covariance leaks only a sparse rank-deficient subset of the key Gram and leaves the eavesdropper at the random-guess level. Dump verify_math.csv, move the superseded V=256 pilot CSVs to data/pilot.
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| 1 | n_frames | perm_frac | eve_ser |
|---|---|---|---|
| 2 | 1 | 0.20234375 | 0.998977 |
| 3 | 2 | 0.7140625 | 0.7107255 |
| 4 | 3 | 0.91484375 | 0.4172725 |
| 5 | 4 | 0.94921875 | 0.324415 |
| 6 | 5 | 0.9515625 | 0.340107 |
| 7 | 6 | 0.94765625 | 0.3034795 |
| 8 | 8 | 0.95625 | 0.303056 |
| 9 | 10 | 0.95546875 | 0.3027505 |
| 10 | 12 | 0.94921875 | 0.3028 |
| 11 | 16 | 0.9546875 | 0.3036285 |
| 12 | 24 | 0.94921875 | 0.303151 |
| 13 | 32 | 0.95234375 | 0.302631 |
| 14 | 48 | 0.95 | 0.3030415 |
| 15 | 64 | 0.9515625 | 0.3025125 |