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this simple program implements the Vigenere cipher in python
For details of this cipher see;
http://en.wikipedia.org/wiki/Vigenere_cipher
This cipher can be broken by frequency analysis, this is a toy project, and should not be used in situations where security is important.
The Algebraic Toy Cipher is a toy cipher for algebraic research. It is scalable in the number of bits and in the number of rounds. Works over two fields GF(2)/P, being one for the s-box invertion and the other for the mixing layer linear transformation.