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Proof-of-Concept for ZKPs (eid-privacy, 2026)

URL: https://eid-privacy.github.io/2026/01/09/poc-report.html

Summary

Documents the Innosuisse Milestone 2 proof-of-concept comparing ZKP systems for privacy-preserving e-ID credentials. Benchmarks cover device/holder binding, issuer signatures, attribute predicates (equality, comparison, revelation), non-revocation, unlinkability, and data minimisation. Systems evaluated: BBS signatures, Bulletproofs (via Dock Network), VB accumulators, and UltraHONK (Noir/Aztec). Identifies Longfellow as the most promising overall approach.

Related resources

• Anonymous Credentials from ECDSA (Frigo & shelat 2024) (paper, 2024)
• Crescent: Stronger Privacy for Existing Credentials (Paquin, Policharla, Zaverucha 2024) (paper, 2024)
• Secure and Privacy-Preserving Credentials for E-ID Proof-of-Concept (Gasser, Humbert, Elghareeb 2025) (paper, 2025)