In a small quiet town during the 1960s, my grandfather lived simply. He sent letters, made phone calls, and shared stories over coffee. He never thought about hiding his words. Encryption was something only spies and soldiers used, not everyday people. By the time I grew up, the world had changed a lot. Our messages, bank transactions, and daily lives all flowed through digital channels. Each one was wrapped in layers of invisible code. Encryption had become the quiet protector of our daily life. It was in every email, online transaction, and secret shared online.
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