Rail Fence Cipher Encryption in Python

Description

This project encrypts messages using the Rail Fence cipher in Python. It constructs a zigzag pattern across a 2D grid based on the number of rails, then reorders the rows using a custom relabeling scheme. The program accepts multiple test cases and dynamically adjusts the encryption based on user input. This was built as part of my hands-on cryptanalysis practice in CIS4004 and showcases algorithmic thinking and grid-based logic.

Skills Learned

• Python list manipulation and 2D grid construction
• Zigzag traversal and row relabeling algorithms
• Handling multiple test cases and dynamic input
• Debugging and validating encryption output
• Modular design and function encapsulation