NashMiao

## anon_cred.md

      
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                NashMiao
                / anon_cred.md
            
            
              Created
              August 6, 2018 07:17
                — forked from Doresimon/anon_cred.md
            
          
    Anonymous Credential

In an anonymous credential scheme there are three participants: issuer, user(prover), verifier. Issuer creates a certificate to user which contains a list of user's attributes and issuer's signature(use BBS+ signature). The user who is in possession of that credential can selectively disclose some parts to some verifier.
Background

BBS signature


Setup: generate a pairing-friendly curve G, and target group Gt, pairing func e: G x G -> Gt.
KeyGen: sk = (x), pk = (g^x).