Management procedure for integrated circuit used in mobile devices, especially for SIM as used in mobile telephones

摘要

The method involves using a program that calls several routines that in turn call subroutines, which may also call subroutines. Additionally other instructions can be made to the CPU at the same time. When executing a program, addresses for instructions are stored in a first safeguard memory, and in an additional second safeguard memory. The two memories are independent.