How Do I Prove That I Am Spartacus Without Showing My ID?

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True story … I phone my bank … and my bank asks me for my password to prove that I am who I say I am, and I say “No! … I’m not giving you that”, and I say “Can you prove to me that you are my bank?” … and they say … “Well, you phoned us!” … and I say “but how do I know you are my bank?” … “We just are! Okay … give me your password” and I say “No!”, and they say “Well we can’t help you if you…

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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.