Project Cipher is a Python-based application that allows you to encrypt and decrypt text using classic cipher algorithm of Caesar cipher with ROT13 and ROT47 algorithms.
A simple Python implementation of Caesar cipher with ROT13 and ROT47 variants.
This project was created as a learning exercise to understand basic cryptographic concepts and Python programming.
The Caesar cipher is one of the simplest and most widely known encryption techniques.
It is a type of substitution cipher where each letter in the plaintext is replaced by a letter some fixed number of positions down the alphabet.
- ROT13: Shifts each character by 13 positions in the alphabet.
- ROT47: Uses all printable characters of ASCII (from "!" to "~") and shifts each by 47 positions.
- Encrypt and decrypt text directly from the terminal
- Supports ROT13 and ROT47 cipher algorithms
- Exception handling for unsupported cipher types
- Unit tests written using
pytest
Project is created with:
- Python 3.12
- pytest
To run this project, install it locally:
git clone https://github.com/MagdalenaOkuniewska/Project_Cipher.git
cd Project_Cipher
No additional dependencies are required to run the basic functionality.
For running tests, install pytest:
pip install pytest
Tests are written using pytest. To run the tests:
pytest
The tests verify the correct functionality of both ROT13 and ROT47 implementations, ensuring that encryption and decryption work as expected with various inputs.
Click here to see the example usage of Project Cipher!
The project uses a facade pattern to provide a simple interface for different cipher implementations.
Currently, it supports ROT13 and ROT47 variants of the Caesar cipher.
You can run the application directly using the `main.py` file:
python main.py
By default, the script will prompt you to choose a cipher type and enter the text to encrypt or decrypt.
from cipher import CipherFacade
# Create a cipher facade
cipher_facade = CipherFacade()
# Encrypt a message using ROT13
encrypted_rot13 = cipher_facade.encrypt("Hello World!", "rot13")
print(f"ROT13 Encrypted: {encrypted_rot13}")
# Decrypt the ROT13 message
decrypted_rot13 = cipher_facade.decrypt(encrypted_rot13, "rot13")
print(f"ROT13 Decrypted: {decrypted_rot13}")
# Encrypt a message using ROT47
encrypted_rot47 = cipher_facade.encrypt("Hello World!", "rot47")
print(f"ROT47 Encrypted: {encrypted_rot47}")
# Decrypt the ROT47 message
decrypted_rot47 = cipher_facade.decrypt(encrypted_rot47, "rot47")
print(f"ROT47 Decrypted: {decrypted_rot47}")