The Cryptogram reference article from the English Wikipedia on 24-Apr-2004 (provided by Fixed Reference: snapshots of Wikipedia from wikipedia.org)

Cryptogram

A cryptogram is a type of word puzzle popularly printed in some newspapers and magazines. A short piece of text is given, encrypted with a simple substitution cipher in which each letter is replaced by a different letter. To solve the puzzle, one must recover the plaintext; this is usually done by frequency analysis and by recognizing letter patterns in words. The Cryptogram is also the name of the periodic publication of the American Cryptogram Association (ACA), which contains a large number of cryptographic puzzles.

The word "Cryptogram" is sometimes used in cryptography in a more general sense, as a synonym for "ciphertext".

Bruce Schneier's monthly newsletter on computer security and cryptography is called the Crypto-Gram.

External links

• A web page about cryptogram puzzles
• The American Cryptogram Association
• Bruce Schneier's Crypto-gram newsletter

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Classical cryptography

Ciphers: ADFGVX | Affine | Atbash | Autokey | Bifid | Book | Caesar | Permutation | Playfair | Polyalphabetic | Running key | Substitution | Transposition | Vigenère

Cryptanalysis: Frequency analysis | Index of coincidence   Misc: Cryptogram | Polybius square | Scytale | Straddling checkerboard | Tabula recta

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