Encryption: What is It and Why is this Just Your First Step to Secure Communications?
Simply put, encryption is the translation of data into a secret code. But that’s a fairly modern definition and encryption goes way back. Historically (and today, as well) encryption is the act of scrambling communication so that only the intended recipient can read it. Early tools, like the Scytale—a tool used by the ancient Greeks — allowed users to wrap a strip of parchment around a rod, write the message, and then when unwound, the message would not make sense, unless the recipient had a rod of the same diameter to read the message.