Architecture with two speed stages trustworthy

摘要

Method for the execution of a software routine in an application, the use of the more users - subsystem with individual address space in an operating environment with a trusted operating mode for the trusted routines and a mode of operation with reduced reliability of for not trusted routines is carried out, wherein the use of a control module to the embodiment as a trusted routine and a table dependable routines, the identifier dependable routines, wherein said method comprising: in response to a determination that the routine of a call for stack, and, in the routine a recent entry in a list of active dependable routines, is led through the control module of switching over to the reliable operating mode to the embodiment of the routine and removal of the routine of the list of active dependable routines; as a response to a determination that the routine is not of a call for stack, and, in that the routine in the table dependable routines by the control module of switching over to the reliable operating mode for carrying out of the routine; as a response to a determination that the routine not is trustworthy, by means of the control module of switching over to the operating mode with reduced reliability of for carrying out of the routine; and, furthermore, in response to a determination that the routine is not of a call for stack, and, in that a calling routine for the routine in a reliable mode of operation is performed by the control module adding of the calling routine for the list of active dependable routines, wherein the application in the reliable operating mode or trusted data changes in the operating mode with reduced reliability of are not variable.