Template:Classical cryptography
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| Classical cryptography edit |
| Ciphers: ADFGVX | Affine | Atbash | Autokey | Bifid | Book | Caesar | Four-square | Hill | Nihilist | Permutation | Pigpen | Playfair | Polyalphabetic | Reihenschieber | Reservehandverfahren | Running key | Substitution | Transposition | Trifid | Two-square | Vigenère
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| Cryptanalysis: Frequency analysis | Index of coincidence |
| Misc: Cryptogram | Polybius square | Scytale | Straddling checkerboard | Tabula recta |