Method for authenticating software

A method for authenticating a software, said method comprises defining a set of parameters to use for trace mapping the software, said set of parameters representing the software functionality when executed, the method further comprises:

• a) creating a trusted fingerprint, said trusted fingerprint is created by trace mapping the software using said set of parameters when executed in a trusted environment;
• b) creating an operating fingerprint, said operating fingerprint is created by trace mapping the software using said set of parameters when executed in an operating environment;
• c) comparing said operating fingerprint with said trusted fingerprint, and identifying any difference between the trusted fingerprint and the operating fingerprint;
• and
• d) when said operating fingerprint is non-identical with said trusted fingerprint, initiating predefined action(s) in response to the identified difference between the trusted fingerprint and the operating fingerprint;
• wherein the method further comprises:
• dividing said set of parameters into multiple subsets of parameter;
• prior to performing step a) determining a subset sequence having a predetermined order of said multiple subsets of parameters;
• and
• replacing said set of parameters with said subset sequence to create said trusted fingerprint in step a) and said operating fingerprint in step b).