A method for rendering software resistant to reverse engineering. Replace at least one first constant (mathematical expression, etc.) in a computational expression with a second mixed mathematical and bitwise-Boolean expression, the first constant being simpler than the second expression and the second...http://www.google.es/patents/US8161463?utm_source=gb-gplus-sharePatente US8161463 - System and method of interlocking to protect software—mediated program and device behaviors
System and method of interlocking to protect software—mediated program and ...