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Results tagged with affine-cipher
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user 44237
A type of monoalphabetic substitution cipher, wherein each letter in an alphabet is mapped to its numeric equivalent, encrypted using a simple function `(ax + b) mod m`.
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How is the affine cipher a permutation?
It seems there would be some collisions in what the different symbols map to, resulting in loss of information.
For example, say we use the English alphabet, multiply by 2 and take the congruence mo …
