Merge pull request #2 from fa18swiss/master

Ajout de ma version des codes DES et Diffie-Helleman
Merge pull request #3 from fa18swiss/master

Ajout code de viginère
Ajout de RC4_Caraccio en Python
Merge pull request #1 from MichaelCaraccio/master

Merge from MichaelCaraccio/Cryptographic-Algorithms/master