introduce model flag to show if encryption routine was applied already
introduce model flag to show if encryption routine was applied already

atk4/atk4,samratcis/atk4,xepan/atk4,samratcis/atk4,samratcis/atk4,xepan/atk4,svisystem/atk4,atk4/atk4,svisystem/atk4,atk4/atk4,atk4/atk4,xepan/atk4,svisystem/atk4