Partitioned two-system encryption (variant 2)

In plain English: Tested multiple encryption steps applied one after another. This record is negative within the tested scope.

NOISE

How to read this record

Verdict – NOISE (no better than random guessing), INTERESTING (slightly above random, almost certainly coincidence), SIGNAL (statistically unusual, warrants investigation), or FULL MATCH (all 24 known letters correct).
Confidence Tier – Tier 1 = mathematical proof (permanent). Tier 2 = every possibility tested. Tier 3 = partially tested. Tier 4 = not yet tested.
Configs Tested – How many different key/parameter combinations were tried.
Best Score – How many of the 24 known plaintext letters the best attempt matched (out of 24).
Keystream Consistency (Bean) – Whether the key values at different positions are mathematically consistent with each other.
Scope Limitations – What this elimination does not rule out.

Configs Tested: N/A
Best Score: 0 / 24 known letters matched · no better than random guessing
Keystream Consistency (Bean): NOT APPLICABLE Corrected 2026-08-24. This experiment applies a transposition, which moves the known-plaintext positions. The stored Bean check compared the result against constants derived for the unmoved arrangement, so any “failure” it reported was an artifact of the mismatch rather than a fact about K4. The check is withdrawn for this page; the other figures stand on their own.
Confidence: Not classified.
Script: scripts/exploration/e_compose_02_extended.py

Reproduce

PYTHONPATH=src python3 -u scripts/exploration/e_compose_02_extended.py

Requires the kryptos repo, Python 3.11+, PYTHONPATH=src.

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