Hecate: Threshold Anonymous Credentials With Private Verifiers and Issuer-Hiding

Hecate is a framework for anonymous credentials (a system allowing users to prove they have certain attributes without revealing their identity) that adds protection for verifiers, the entities checking credentials, while maintaining threshold issuance (requiring multiple parties to approve a credential) and issuer-hiding (hiding which organization issued the credential). The system uses a dual-credential design to let both verifiers and users set policies about who can access information, and testing shows it can verify credentials quickly, in about 37-60 milliseconds.