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Yes, that is possible. One of the most prominent examples is the Direct Anonymous Attestation (DAA) protocol. It is used in the TPM.


First, authentication is not really “proving that someone is who they say they are”, but linking an action, message or situation with an identity. If I show my passport to prove who I am, what I am really doing is linking my physical presence with the identity conferred to me by the state of which I am a national. A person may well have multiple identities. ...

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