bifid cipher

Fetched 2026-10-26 (cache).

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Noun

1. {{lb|en|cryptography}} A [[classical]] [[cipher]] that combines the [[Polybius square]] with [[transposition]], and uses [[fractionation]] to achieve [[diffusion]].

Source: Wiktionary · CC BY-SA 4.0 (Wiktionary dump) · cached copy, not a rewrite.