Every encrypted connection you make online relies on a centuries-old mystery about prime numbers. This is the elegant ...

Hard problems are usually not a welcome sight. But cryptographers love them. That’s because certain hard math problems underpin the security of modern encryption. Any clever trick for solving them ...

Introduction to ciphers and substitution. Alice and Bob and Carl and Julius: terminology and Caesar Cipher ; The key to the matter: generalizing the Caesar Cipher ; Multiplicative ciphers ; Affine ...

Encryption is one of several cornerstones of a robust information security program. Articles on quantum computing often include the compelling narrative that encryption is at risk, but as with any ...