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 ...

You can make a message secret in countless different ways. One common way is to use a substitution cipher, in which one letter is substituted for another. Another is to employ a transposition cipher, ...

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 ...

Serious Cryptography – A Practical Introduction to Modern Encryption written by Jean-Philippe Aumasson, is an incredibly detailed and practical guide to modern encryption, written by one of the ...

For more than 40 years, we have been building the modern internet on foundations that were never designed for the world we live in today. When the architects of the early internet created its ...

Cryptographic obfuscation and functional encryption have emerged as pivotal tools in contemporary cryptography, offering novel ways to secure software and data while preserving functionality. At its ...

When checking your email over a secure connection, or making a purchase from an online retailer, have you ever wondered how your private information or credit card data is kept secure? Our information ...

Modern cryptography is embedded in countless digital systems and components. It's an essential tool for keeping data secure and private. Yet one of the biggest limitations with cryptography, including ...