Caesar and Vigenere Ciphers

--Originally published at TC2027 – Will It Blog?

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This page was very useful and I found it very illustrative for both ciphers.

In class and because I was in a hurry I did a pretty bad Vigenere with matrices and confusing indexing. I had to exploit more the python language and use more of its features so I came up with the following functions for encrypting and encrypting. I also did an additional method called left shift in order to shift the alphabet array and continue with the indexing of each letter in reference to it.

This ended up being very handy for both ciphers. The function only does the splitting from shift point to the right and from shift point to the left, the concatenation of both lists into one list does the final encryption table reference.

Both ciphers can be encountered in this github repository