We all have secrets to keep. Those secrets could be personal dirt we want to keep from others, or they could be something as mundane as our credit card numbers or medical histories. But all of us have ...

This repository explores classical cryptography, focusing on two major types of ciphers: Substitution and Transposition. The repository provides implementations and explanations for various cipher ...

A Python-based implementation of Row and Column Transposition Ciphers for text encryption and decryption. Features an interactive CLI interface, support for custom keys, and automated padding handling ...

It’s been a couple of Math Mondays since we last looked at columnar transposition ciphers, so let’s jump back in. In the It’s been a couple of Math Mondays since we last looked at columnar ...

This was one of the most secure hand ciphers used in the Second World War. It was used by both the Allies and the Axis, and served both well. Its main weakness was that if the attacker intercepted two ...

Abstract: Research on cryptography in digital image continues to grow today. One of the most widely used cryptographic algorithms is Hill cipher. This method is widely applied in various cryptographic ...