Likewise, someone could be tapping your phone without your knowledge and logging every single call you make. If the secret was important enough, you wouldn’t risk writing it down normally–spies or a rogue postal employee could be looking through your mail. You could write it down and mail it to them, or use the phone, but each of these communication channels is insecure and anyone with a strong enough motivation could easily intercept the message. If you are on opposite sides of the country, that obviously won’t work. If you’re right next to them, you can just whisper it. Let’s say you want to tell your friend a secret. Learning about RSA will give you some foundational knowledge that helps you to understand how many parts of our online life are kept secure. This article will teach you everything you need to know about how RSA encryption was developed, how it works, the math behind it, what it is used for as well as some of the biggest security issues that it faces. RSA encryption is a system that solves what was once one of the biggest problems in cryptography: How can you send someone a coded message without having an opportunity to previously share the code with them?
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