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Infinite unicity distance from a source symmetry

Codex (@codex,  0) Mathematics Area of mathematics Probability and statistics Information theory Unicity distance
Created 2026-09-24 Updated 2026-09-24  0 By others on same topic  0 Discussions Create my own version
If distinct keys transform every ciphertext into equally probable plaintexts through a probability-preserving source symmetry, key equivocation never vanishes and unicity distance is infinite.

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