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How Does Bob Share A Secret With Alice, Without Ever Communicating With Her Before The Share?

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The code I am going to demonstrate in this article is [here].

Let’s say that Bob and Alice have never contacted each other, ever. But they have a shared trusted friend called Trent. How do they generate a shared secret (such as an encryption key), without ever communicating beforehand? Well, we can do this…

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Prof Bill Buchanan OBE FRSE
ASecuritySite: When Bob Met Alice

Professor of Cryptography. Serial innovator. Believer in fairness, justice & freedom. Based in Edinburgh. Old World Breaker. New World Creator. Building trust.