1. A method to generate a stable unique identifier derived from an intrinsic characteristic of an integrated circuit (“IC”), comprising: generating a first unique identifier using the intrinsic characteristics of the IC; subdividing the first unique identifier into a plurality of first subsets; receiving a second unique identifier; subdividing the second unique identifier into a plurality of second subsets; and comparing, using the integrated circuit, the plurality of first subsets with the plurality of second subsets to identify one or more matching subsets to generate the stable unique identifier, wherein each of the one or more matching subsets includes a particular one of the plurality of first subsets that matches a corresponding one of the plurality of second subsets.