Skip to content

Mysteries Department

Sign in Request access

Methods CryptanalysisHomophonic solver with planted-key controls and permutation null

Method · cryptanalysis

Homophonic solver with planted-key controls and permutation null

CryptanalysisVersion 1.0Licence MIT4 runsUsed on 1 mystery

Questions it answers

Is it a cipher of a known language?

Code Python

Download module (.py)homophonic.pyView source

Runs and results 4 runs

Run	Mystery	Measured	Result	Against	Date
RUN-054	Voynich	Held-out gap, six configurations re-run with the stronger frequency penalty	Latin slots 2.02, Italian slots 2.20, German slots 2.48, Latin glyph 2.34, vowel-less Latin slots 0.72, glyph 0.73	Control 0.02-0.08	22 Oct
RUN-020	Voynich	Held-out gap, 300 words as units	Italian 3.10, German 3.48, Latin 2.54	Control 0.02	22 Oct
RUN-019	Voynich	Held-out gap (own minus decoded), nats/char, best of 19 configurations	0.34 (Latin.novowel slots spaces=True)	Planted-key control 0.02 · plain languages 0.7-3.5	22 Oct
RUN-010	Voynich	Homophonic solver recovers planted 80-unit Latin key, no spaces	0.983	With spaces 1.0	22 Oct

Applied to

Voynich Manuscript

Voynich Manuscript

1 datasetZL3b transcription