Introducing a modular arithmetic substitution cipher:

The Affine Cipher

Regretably, not useful for K4.  I am impressed by the ingenuity of actually working mathematically on an encryption algorithm instead the more conceptual methods.  Ultimately however, it was destined to simply remain interesting as all simple substitution ciphers share the same weaknesses no matter how complicated the methods of getting the ciphertext are.

Kryptosfan

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