Is anonymous credentials in Hyperledger Indy similar to zero knowledge proof (ZKP)?

Question

Is anonymous credentials in Hyperledger Indy similar to zero knowledge proof (ZKP)?

https://github.com/hyperledger/indy-anoncreds

Nathan Aw

Answer 1

Yes! /indy-anoncreds are a type of ZKP based upon the Idemix protocol.

In Anonymous credentials, by Dmitry Khovratovich, it is explained:

We say that credentials are unlinkable if it is impossible to correlate the presented credential across multiple presentations. Technically it is implemented by the Prover proving with a zero-knowledge proof that he has a credential rather than showing the credential.

See /awesome-indy#IDEMix-ZKP- for more information

Answer 2

The credentials generated in Hyperledger Indy are verifiable credentials. It is powered by Identity Mixers. Another interesting feature in revocable credentials which is a important addition to the older implementation of identity mixers.