Cipher Decryption Engine

The cipher engine handles substitution ciphers, transposition ciphers, Vigenère, Beale-style book ciphers (Declaration of Independence key), the surveyor-chain method, Masonic and pigpen ciphers, Caesar, PLSS encoding, clock-position and distance notation, and direct conversion of surveyor field notes to GPS coordinates.

When a cipher text is submitted, the AI auto-detects the most likely method based on character-frequency analysis, pattern recognition, and historical context, then runs multiple decryption strategies in parallel and returns the highest-confidence results.

The Beale Surveyor-Chain Method is an in-house decryption approach graded HYPOTHESIS. It treats Beale Cipher #1 numbers as Gunter's-chain measurements (66 ft each) rather than book-cipher indices. The vault-location conclusion previously drawn from this method was RETRACTED in May 2026 after the clustering failed a controlled Monte-Carlo baseline; no Beale vault coordinate is presented as a finding.

The chain method is a testable hypothesis, not a proof, and its first controlled test returned a null result. The null is published rather than buried: a grading scale that nothing ever fails is decoration. The surviving Beale conclusions are documentary: James Beverly Ward as the pamphlet's author, graded SECONDARY because linguist Jean Pival reached the same authorship conclusion independently in 1982 from shared stylistic patterns, and Paschal Buford as probable cipher architect, graded DERIVED.

PLSS-encoded clues — township, range, and section references — are resolved against the correct initial point and meridian for the state in question, returning a section-level constraint area rather than a pin. A cipher narrows a search area only when it encodes a measurable spatial instruction and a surveyed anchor survives in the record.

The engine also auto-detects and converts legacy measurement systems with era-appropriate magnetic declination: Gunter's Chain (66 ft / 20.1168 m), Rod or Perch (16.5 ft / 5.0292 m), Spanish Vara (33.33 in / 0.8467 m), Spanish League (2.6 mi / 4.18 km), English League (3 mi / 4.83 km), Fathom (6 ft / 1.8288 m), Link (7.92 in / 0.2012 m), and Arpent (192 ft / 58.5 m).

Surveyor field notes in classical form ("From the large oak, N 45° E, 12 chains to the creek, thence S 30° W, 8 chains to the marked stone") can be pasted directly and converted to GPS with declination correction for the document's era.

The engine is intended to move encoded clues from paper into testable geographic leads, then hand off to the LiDAR and terrain layers for anomaly verification.