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Ever wondered what the difference between public key vs. private key cryptography actually means? Furthermore, why is quantum cryptography even important? Prof. Smart answers all of your questions and also explains how cryptography has changed in the past five years.

In the ‘Ask the Professor’ video series, Professor Nigel Smart, a world-renowned expert in applied cryptography, Vice President of the International Association of Cryptologic Research, and Professor of Cryptography in the Department of Computer Science at University of Bristol, answers the internet’s most interesting questions about cryptography. Based on questions from popular blogs, forums, and social media—this series is relevant for both beginners and advanced crypto enthusiasts alike.