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Cryptography
If you're interested in classical cryptography, codes, and ciphers, here are some tools for Mac users. They don't solve your cipher, but, like paper and scissors, they help you to solve it. And here are some web-based Crypto scripts in php: Crypt information Transposition ciphers Substitution ciphers Acrostics Here's Google's N-gram page. Here's a page that shows you what information you reveal when you browse. Beale Cipher #3 test.
Acrostics have been used since the early Middle Ages. St. Augustine of Hippo wrote a psalm using an acrostic. Some poets were far more advanced, hiding messages in pictures. Here's one by Hraban Maur, a ninth-century monk of Fulda in Germany.
LINKS: The American Cryptogram Association homepage. They also post a nice javascript for Aristocrat Ciphers. Wikipedia on the Vigenère. Helen Fouché Gaines, Cryptanalysis at the library nearest to you. David Kahn, Codebreakers at the library nearest you. Terry Long's Enigma Simulator for the Mac. SCRIPT: Classic STRIPS for a square. No cutting anymore! In Terminal `$> perl stripsMove.pl` SCRIPT: Make Beaufort Square. In Terminal `$> perl mkbeau.pl` SCRIPT: Make Vigenère Square. In Terminal `$> perl mkvig.pl` SCRIPT: Make 5x5 Polybius Square. In Terminal `$> perl polyfive.pl` SCRIPT: Make 6x6 Polybius Square. In Terminal `$> perl polysix.pl` JHI's Ngram script [In Terminal `$> pico this.txt` Replace current contents of `this.txt` with your cipher. (Control-K deletes a line; copy-paste into Terminal from your text file.) In Term. `$> more this.txt \| perl mkbeau.pl`

Cryptography