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Programming Lewis Carroll's Memoria Technica
*Memoria Technica* Charles Dodgson (pen name Lewis Carroll) had difficulty remembering numbers, such as dates. He developed a cipher to help him remember numbers by embedding them in couplets or phrases.
Encoding an integer involves choosing one of two consonants for each digit and inserting vowels, y, and punctuation to create valid words. As described in the ‘English Language Coverage/Branching Factor’ section below, most plaintexts will yield large numbers of potential ciphertexts (e.g. thousands for three digits). While Dodgson did not present this technique as a cipher nor as a tool for steganography, but only as an aid to memory, we believe it has potential utility.
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