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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 frequencyanalysis, this is a toy project, and should not be used in situations where security is important.
CryptoHawk can calculate hashes (md2,md4,md5,sha-1,sha-256 and hmac). It can also perform cryptanalysis like frequencyanalysis for substutition cipher and exhaustive key search for rotation cipher, as well as searching internet databases for md5 hashes.