An encryption for messages.
Uses two dictionaries to convert letters into numbers, and numbers into letters. public and private keys are created in line 53.
The funtion keys will give you the public and private keys. when creating keys the numbers given to the keys funtion need to be prime.
example:public, public2, private, private2 = keys(23,13)
To encrypt any message use the funtion encrypt by giving it the two public keys and the message.
Example: encrypt(public, public2, "your message goes here").
To decrypt the encrypted message use the funtion decrypt by giving it the two private keys and the array of encrypted letters.
Example: print(decrypt(private, private2, encrypt(public, public2, "your message goes here"))).
As of right now it only supports messages with all lower case characters.