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Loading page content...A digraph substitution cipher using two standard alphabets and two keyed 5x5 matrices to encrypt pairs of letters.
Imported traces are validated and replayed locally. They never run a cipher operation automatically.
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A fractionating cipher combining a keyed Polybius-square substitution with a positional transposition across the whole message.
A WWI-era cipher combining a keyed 6x6 Polybius-square substitution with a keyed columnar transposition.
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