Hacking Secret Ciphers with Python 
Al Sweigart 
 - USA  Creative Commons Attribution  2013 
 - 442p 
<br/><br/> E Book 
<br/><br/><label>ISBN: </label>1482614374 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Hacking Secret Ciphers with Python