clientAttestationSigningAlgValuesSupportedStrings

The Authorization Server SHOULD communicate supported algorithms for client attestations by using clientAttestationSigningAlgValuesSupportedStrings and clientAttestationPopSigningAlgValuesSupportedStrings within its published metadata. This enables the client to validate that its client attestation is understood by the Authorization Server prior to authentication. The client MAY try to get a new client attestation with different algorithms. The Authorization Server MUST include clientAttestationSigningAlgValuesSupportedStrings and clientAttestationPopSigningAlgValuesSupportedStrings in its published metadata if the tokenEndPointAuthMethodsSupported includes attest_jwt_client_auth. See OAuth 2.0 Attestation-Based Client Authentication