Simple-Caesar-Cipher

• This is a simple cryptographic tool based on caesar cipher algorithm.
• I took out this example from the book: Hacking Secret Ciphers with Python - Invent with Python
• I made a bit of change to the original version, by getting input from user.

• 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’

  STEPS:

  • Write a sentence to be encrypted or decrypted;
  • Choose a key between 1 and 25;
  • Choose a mode: ‘encrypt’ or ‘decrypt’