Skip to content

Home > Resources > blogs > Dyne-Longfellow-ZK-Review

The Longfellow ZK (Google-zk) (Dyne.org, 2025)

Last modified: 2026-10-23

Summary

Dyne.org's analysis of Google's longfellow-zk implementation for selective disclosure over ISO mdoc/mDL credentials signed with ECDSA. It reviews the architecture (Ligero + sumcheck), the code base, and practical integration questions. An independent third-party view complementing the Longfellow paper and IETF draft.