Add a Python program to encrypt and decrypt Cesar cipher #80
Description
Cesar cipher is a simple substitution cipher that can either be decrypted with a key (any natural number) or by brute-force (i. e. by trying all possible keys).
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Cesar cipher is a simple substitution cipher that can either be decrypted with a key (any natural number) or by brute-force (i. e. by trying all possible keys).