I hope you enjoyed Ed’s guest posts on NP-complete problems on TV the last couple of Mondays. It’s always great to hear from others on math that they are thinking about. This week it’s me again, and ...

A small project to simulate different classic ciphers. The project was written during my sophomore so the optimization is not really at its best. Currently, this project has 7 ciphers: [0]: Caesar ...

This small Flask application demonstrates classical cryptography concepts from a cryptography & system security syllabus. It focuses on privacy, authentication, encryption (Product Cipher: Playfair + ...

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 ...

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 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 ...