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by q4h555qh5
3754 days ago
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Quantum crypto is a large field. One aspect is Quantum Key Distribution (QKD). It opened the door to the whole field of quantum computing (it was discovered before Shor's algorithm). QKD allows you to distribute a one-time pad while only sharing an authentification key. It is (on paper, if you don't count experimental flaws) theoretically-secure, meaning you can't break it or man-in-the-middle attack it even if you have infinite computational power (with 1-epsilon probability, epsilon being as close to 0 as we decide). In practice, most QKD systems can be hacked through hardware flaws. |
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