nuts_kex_spec.tick returns a value of nuts_tick
nuts_service_spec.tick returns a value of nuts_tick
Complete service handling
nuts_get_encryption_algorithm()
nuts_get_mac_algorithm()
nuts_kex_clear_encryption_algorithms(),
nuts_kex_activate_encryption_algorithm()
nuts_kex_clear_mac_algorithms(), nuts_kex_activate_mac_algorithm()