Flags for g_tls_database_lookup_certificate_for_handle(), g_tls_database_lookup_certificate_issuer(), and g_tls_database_lookup_certificates_issued_by().
Restrict lookup to certificates that have a private key.
No lookup flags
Flags for g_tls_database_lookup_certificate_for_handle(), g_tls_database_lookup_certificate_issuer(), and g_tls_database_lookup_certificates_issued_by().