Secured program code producing method for license verification, involves storing modified program code including exchanged references, coded program blocks and program block with decoded function as protected computer program

摘要

The method involves coding predetermined program code blocks into coded program code blocks (13,14). The predetermined program code blocks are exchanged with associated coded program code blocks. The modified program code including exchanged references, coded program blocks and program block with decoded function is stored as a protected computer program (9). The pre-determined program code block implements license verification. Independent claims are also included for the following: (1) a method for executing a program code of protected computer program (2) a computer program product with a program code for implementing the method for producing secured program code.