Phase 1: Local constant-difference constraint census at all 17 null positions

In plain English: Phase 1: Local constant-difference constraint census at all 17 null positions — using the hypothesis that some letters in the carved text are meaningless filler (nulls) inserted to disguise the real message. This approach is ruled out 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 (random guess would score: 0.0)
Keystream Consistency (Bean): FAIL
Checks whether the key values at different positions are mathematically consistent with each other.
Confidence: Not classified.
Date Tested: 2026-04-03
Script: scripts/analysis/e_null_arithmetic_census.py

Reproduce

PYTHONPATH=src python3 -u scripts/analysis/e_null_arithmetic_census.py

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

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