A method for carrying out of a secured program in a microprocessor - card with a protected program

摘要

It is provided to secure a programme in respect of a central unit (1) by storing in a first memory zone (3) a series of functions with a predetermined address that can be executed directly by the central unit (1), thereby protecting the first memory zone for writing, and by storing the program in a second memory zone (4) in the form of a series of instructions to the inside of the second memory zone (4) or activating functions contained in the first memory zone (3).