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I can see that login via private key is cool for some people, and being able to login via a private key some other party maintains for you would work for "norma

I can see that login via private key is cool for some people, and being able to login via a private key some other party maintains for you would work for "normal" users. But I could also implement that without bringing in a block chain, right? Wouldn't we expect that Google and the current authN providers just implement that if it ever became popular?

UncleMeat 5y ago
> But I could also implement that without bringing in a block chain, right? Not only that, but they have! Signature-based authentication existed 20 years ago. Register with a public key. Sign a message with your private key to authenticate. Modulo some small details to prevent things like replay, you are done. The only thing that the blockchain brings is that now lots of people have asymmetric key pairs where their public keys are published somewhere widely accessible.