My repo for Cracking Codes with Python

Ciphers

• reverse cipher (reverse_cipher.py)
• caesar cipher (caesar_cipher.py)
• transposition cipher (transposition_cipher.py)

Hacks

• caesar cipher brute force (caesar_brute_force.py)
• transposition cipher brute force (transposition_brute_force.py)

Utilities

• Clipboard module (pyperclip.py)
  • It was written by the author of Cracking Codes with Python and is not modified by me.
• Random numbers utilizing Python 3's secrets module (cipherrandom.py)
  • I wrote these helper functions.
  • Secrets uses the most secure sources of randomness your OS provides.
  • On some modern and up-to-date OSes this randomness is cryptographically secure.
  • That does not mean the cipher is cryptographically secure.

Tests

• transposition encrypt/decrypt test (transposition_test.py)

Notes and Important Warnings

• I have modified, sometimes heavily, the examples from the book.
• Original Cracking Codes examples are under a BSD License.
• pyperclip.py is a utility module for interfacing with an OS's clipboard.
  • It was written by the author of Cracking Codes with Python.
  • It is a security risk due to the fact that any program could use it to access your clipboard.
  • All of the scripts can be used without the pyperclip module by simply commenting it out in each script.
• Python 3 is used through-out.
• THE CIPHERS HERE ARE NOT CRYPTOGRAPHICALLY SECURE. DON'T USE THEM. THIS IS FOR LEARNING AND FUN, DUDE, SRSLY.