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 ...

A Python tool to break a columnar transposition cipher using brute-force key permutation and frequency analysis heuristics Classical Cipher Cryptanalysis Tool (English) This project is a Python-based ...

Abstract: This paper aims to secure visual information present in an image using cryptographic techniques. Transposition cipher and Bit reversal image encryption are the two techniques demonstrated in ...

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 ...