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 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 ...

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 ...

However, Agent Madeleine numbered the duplicate A's and L's from right to left instead of from left to right, so it would be the equivalent of replacing the keys with MCHBTUNDILA and CUMLBTJNDIKA, ...

This project explains what the Hill Cipher and Columnar Transposition Cipher is, some advantages/disadvantages, some history if there is available. The user uses the makefile and make compiler to ...

1.Rail Fence Cipher (with N rails): To rearrange characters in a zigzag (rail-like) pattern to conceal the actual message. Procedure: 1.Input: oPlaintext message (string). oKey = number of rails ...

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 ...