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Zero

This is an application that supports the encoding and decoding of three popular ciphers:

This is a application and it is written in Python. All the cipher implementations are my own. For the UI it uses Tkinter with my custom theme minimal-tkinter. All the code is in one file, however it wouldn't be difficult to refactor it and have seperate files for each cipher.

Screenshots:

"Zero Application"

Usage:

Run cipher.py

Program Settings:

Ceasar Cipher and Vigenere Cipher Options:

  • Keep Character Case: Keeps the character case in the output. When the setting is on: Test -> Docd and when the setting is off: Test -> docd.
  • Keep Unknown Characters: Any Characters that don't work in the cipher (most puncutation, etc) gets put in the ciphertext at the same position. For example, when the setting is on: test! -> docd! and when setting is off: test! -> docd.

Vernam Cipher Options:

  • Keep Character Case: Same as Ceasar Cipher and Vigenere Cipher
  • Seperate Binary: Splits up output binary string into 8-bit blocks. When the setting is on: test -> 00000100000100110000010100000100 and when setting is off: test -> 00000100 00010011 00000101 00000100.

Encoding/Decoding:

To encode with a particular cipher do the following steps:

  • Select a Cipher via the Entry that says Select Cipher - Make sure you choose an option that says encode if you want to encode or decode if you want to decode.
  • Enter the text you wish to encode/decode into the input that says Enter Plaintext/Ciphertext.
  • Enter a key into the input that says Enter Key - Becareful here, some ciphers only allow certain types of keys. For example, a Ceasar Cipher will only work with an integer.
  • Click Compute and the output will be displayed in the output window.