GET NORDVPN: USE COUPON CODE: sabine USE THE CODE SO YOU CAN GET 68% off 2-year plan + 1 additional month FREE. You can learn more about NordVPN on their YouTube channel: Note: At 7 min 52 secs "vertical direction" should have been "horizontal direction", sorry about that :/ In this video I explain how public key cryptography works on the internet today, using RSA as example, what the risk is that quantum computers pose for internet security, what post-quantum cryptography is, how quantum key distribution works, and what quantum cryptography is. 0:00 Intro 0:31 Public Key Cryptography 2:43 Risk posed by Quantum Computers 4:03 Post Quantum Cryptography 5:31 Quantum Key Distribution 10:25 Quantum Cryptography and Summary 11:16 NordVPN Sponsor Message 12:28 Thanks Sound from #physics #science #quantum