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 ...

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 ...

The message is called the plaintext because it is the unchanged source information. Example: The cat ran away. The secret message generated is called a cipher or ciphertext and it is the encrypted ...

This repository contains the implementation of a hybrid cipher that combines substitution (using a modified Hill Cipher) and transposition techniques to achieve robust encryption with at least 128-bit ...

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 ...

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 ...