US 12,353,426 B2
Assigning device
Geert Jan Schrijen, Roermond (NL); and Derk Jan Meuleman, Kessenich (BE)
Assigned to Synopsys, Inc., Sunnyvale, CA (US)
Filed by Synopsys, Inc., Sunnyvale, CA (US)
Filed on Jul. 19, 2022, as Appl. No. 17/867,890.
Application 17/867,890 is a continuation of application No. 15/777,305, granted, now 11,429,624, previously published as PCT/EP2016/076716, filed on Nov. 4, 2016.
Claims priority of application No. 15195585 (EP), filed on Nov. 20, 2015.
Prior Publication US 2022/0365927 A1, Nov. 17, 2022
Int. Cl. G06F 16/2458 (2019.01); G09C 1/00 (2006.01); H04L 9/06 (2006.01); H04L 9/32 (2006.01)
CPC G06F 16/2468 (2019.01) [G09C 1/00 (2013.01); H04L 9/3278 (2013.01); H04L 9/0643 (2013.01); H04L 2209/12 (2013.01); H04L 2209/26 (2013.01)] 22 Claims
OG exemplary drawing
 
1. An assigning device, comprising:
a database storing multiple respective database records for respective physically unclonable functions, the multiple database records storing respective fuzzy identifiers, the respective fuzzy identifiers being noisy responses of the respective physically unclonable functions;
a network interface that receives a fuzzy input identifier, the fuzzy input identifier being a noisy response of a first physically unclonable function; and
a processor system that searches for the received fuzzy input identifier among the multiple database records in the database, and assign a fixed identifier to the first physically unclonable function based on the searching, wherein searches for different fuzzy identifiers that are noisy responses of the first physically unclonable function result in assigning the same fixed identifier to the first physically unclonable function;
wherein the network interface further transmits the assigned fixed identifier, wherein the assigned fixed identifier uniquely identifies the first physically unclonable function.