are anonymous credentials a type of zero knowledge proof?

Question

Are anonymous credentials (such as IBM Idemix) a type of zero knowledge proofs (ZKP)? if so what type of ZKP are they?

The papers such “Security without identification: transaction systems to make big brother obsolete” don not reference ZKP.

My understanding is they both refer to similar topics.

Panagiotis Grontas · Accepted Answer · 2018-04-07 18:03:21Z

2

I would rather call them a type of blind signatures. Since signatures stem from non interactive ZKP you can say that they are related.

answered Apr 7, 2018 at 18:03

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$\begingroup$ Aren't blind signatures also a sub-category of ZKP since they provide the ability to sign data without viewing the data. $\endgroup$
– picolo
Apr 7, 2018 at 18:45
$\begingroup$ I don't think so since in ZKP the zero knowledge part concerns the key not the message. In Blind signatures the signer does not see the message and also provides a ZKP of the key $\endgroup$
– Panagiotis Grontas
Apr 7, 2018 at 19:37

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