What is selective disclosure (selektive Offenlegung)?

Selective disclosure is the targeted, controlled release of specific information from a larger set of signed data, so that only the data needed for a purpose is shared while integrity and authenticity remain verifiable.

* From a fully signed credential to a presentation that reveals only one derived claim. *

Technically achieved with SD-JWT (hashed claims plus disclosures) or multi-message signatures such as BBS.

Go deeper:

• RFC 9901 Selective Disclosure for JWTs (SD-JWT) — the standard: hashed claims, disclosures and the key-binding variant.