Home > Resources > wikis > IETF-RFC9901-SD-JWT

RFC 9901: Selective Disclosure for JSON Web Tokens (SD-JWT)

Last modified: 2026-10-23

URL: https://www.rfc-editor.org/rfc/rfc9901.html

Summary

IETF RFC (November 2025) specifying SD-JWT: the issuer signs a JWT containing salted hashes of claims, and the holder reveals chosen claims by sending the corresponding disclosures, optionally with a key-binding JWT. Selective disclosure is hash-based, so presentations remain linkable through the signature and hashes — the gap that ZKP-based approaches over SD-JWT aim to close. SD-JWT is the basis of the Swiss swiyu credentials and one EUDI format.