confirmationClaim

OPTIONAL unless cryptographic Key Binding is to be supported, in which case it is REQUIRED. Contains the confirmation method identifying the proof of possession key as defined in RFC7800. It is RECOMMENDED that this contains a JWK as defined in Section 3.2 of RFC7800. For proof of cryptographic Key Binding, the KB-JWT in the presentation of the SD-JWT MUST be secured by the key identified in this claim.