From Caesar to WhatsApp: The History of Encryption 🔐

Every private message, password, bank transfer, and secure website depends on encryption. But the story began thousands of years before smartphones. This PROTO summary follows encryption from ancient ciphers and the Caesar cipher to wartime codebreaking, Enigma, public-key cryptography, the internet, end-to-end encrypted messaging, and the modern battle over privacy. Encryption is the hidden technology that protects the digital world.
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