I have gotten tired of making telescopes, at least for awhile, and looking about for something to exercise my mind I stumbled across cryptography. The old stuff, pencil and paper, not secure internet correspondance. Though it could be I suppose.

Anyway, question! The hitch in the substitution ciphers and the Vigenere ciphers seems to be associated with language structure, spelling etc. If I used a computer to limit the letter frequencies and used 'yoda speak' to compose the message, could I do a pencil code that could not be cracked?

What would be the minimum length of enciphered data that could be cracked?

David Davis
Toledo, OR 97391