[ Thanks to Brendan Scott for this
link. ]
“Enter CryptoPyThy
“In retrospect, this is probably a bit too much to cover without
a breather. However, we’ve now got a good slice of the basic
concepts down and are able to write a program which will make use
of them. I’m calling it CryptoPyThy (‘crypt-oh-pih-thee’) and we
can use it to make secret messages that no one else can read. What
we will do is write some code which:* asks for a message to encrypt (or decrypt);
* takes that message and passes it to an encryption
function;* the encryption function breaks it down to each character in
the message;”