About
Python program that handles .txt, .py, .docx, and .pdf files and encrypts/decrypts them with an expanded Vigenère cipher in the specified directory with a specified key.
The classical Vigenère cipher operates within the Vigenère square, a 26x26 matrix of either uppercase or lowercase English characters. The modified Vigenère cipher presented expands the operation to a matrix of 95x95, working with characters within the ASCII bound 32-126 (' ' to '~'). The modified variant works well against common cipher identification, Vigenère cipher crackers, and frequency analysis tools.
Requirements
- Python >3.7
- docx:
pip install python-docx - PyMuPDF:
pip intall PyMuPDF
Launching
git clone https://github.com/yuliyavolkova18/modified-vigenere-ransomwarepython modified-vigenere-ransomware
Vigenère reading
- Vigenere cipher (2023) Javatpoint. https://www.javatpoint.com/vigenere-cipher
- Deshmukh, S. (2016) Vigenère Score for Malware Detection, SJSU ScholarWorks. https://scholarworks.sjsu.edu/etd_projects/487/
Future fixes
- Support exceptions for .docx files containing images.
- Add separate support for .py texts to account for nested tabbed spaces in encryption/decryption.