Screen of CIA cryptonym-style words (formation rule documented from Sanborn's own worksheet photographs) as...

Candidate plaintext or key fragments, across additive and Quagmire III convention cells including key phases and gap regions

In plain English: Candidate plaintext or key fragments, across additive and Quagmire III convention cells including key phases and gap regions — using a method that uses a scrambled alphabet with a repeating keyword (Quagmire cipher). 5 thousand key/parameter combinations were tested. 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: 5,040
Best Score: 0 / 24 known letters matched · no better than random guessing
Keystream Consistency (Bean): FAIL
Checks whether the key values at different positions are mathematically consistent with each other.
Confidence: Not classified.
Date Tested: 2026-06-11

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