Cryptography might be the most important thing that you use every day -- from e-commerce to messaging apps to retrieving your email to getting money out of an ATM to satellite TV -- without knowing.

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 ...

I dont know what other forum to put this on...sooo. ;P <P>I remember reading a while back about some code book that had a bunch of cryptography puzzles in it. Like a puzzle book, i guess. <P>I wanted ...

Introduction: A revolutionary cipher -- Cryptology before 1500: a bit of magic -- The black chambers: 1500-1776 -- Crypto goes to war: the American Revolution -- Crypto goes to war: the American Civil ...

Encryption is the process of converting readable data into a coded format that is only accessible by someone with the proper key or password. At its core, encryption ensures privacy and security by ...