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What’s The Difference Between ECDSA and EdDSA?

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I once received a question in a Cisco certification exam, and it said:

What does WEP stand for?
A Wired Equivalent Privacy
B Wireless Equals Protocol
C Wireless Enabled Protocol
D Wired Embedded Privacy

I basically couldn’t find the answer, which I think should have been:

E Basically I don’t care, but I could explain how it works!

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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.