Greshko Proposes Naibbe Cipher Replicating Voynich Patterns
Independent researcher Michael A. Greshko publishes a paper in Cryptologia proposing the Naibbe cipher, a verbose homophonic substitution that transforms Latin and Italian plaintext into Voynich-like ciphertext. He demonstrates the system reproduces key statistical features—flattened character frequencies, low entropy, and line-dependent patterns—and argues the method is historically plausible and useful for simulating Voynich texts for computational analysis.
Key Points
- 1Demonstrates a verbose homophonic substitution (Naibbe) that converts Latin/Italian texts into Voynich-like ciphertext.
- 2Explains manuscript statistical anomalies—flattened frequency, low entropy, rigid word structures—using historically plausible hand encryption.
- 3Enables practitioners to simulate Voynich texts for ML testing and narrows the decryption search space.
Scoring Rationale
New reproducible cipher offers practical ML simulation and historical plausibility, but has limited scope beyond cryptography.
Sources
Public references used for this report.
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