This is a simple cryptographic tool based on caesar cipher algorithm.
pyperclip is a module created by the author of the book.
The pyperclip file need to be in the same folder of the main file.
This simple caesar cipher algorithm doesn’t encrypt non-letters.
If a try to encrypt this string ‘In age of Bitcoin, countries will never have to rely on others to store their assets! 03-09-2017’
with the key 4, it will encrypt to ‘MR EKI SJ FMXGSMR, GSYRXVMIW AMPP
RIZIV LEZI XS VIPC SR SXLIVW XS WXSVI XLIMV EWWIXW! 03-09-2017’