Delay locking: Security enhancement of logic locking against IC counterfeiting and overproduction

Logic locking is a technique that has been proposed to thwart IC counterfeiting and overproduction by untrusted foundry. Recently, the security of logic locking is threatened by a new attack called SAT attack, which can effectively decipher the correct key of most logic locking techniques. In this p...

Full description

Saved in:
Bibliographic Details
Published in2017 54th ACM/EDAC/IEEE Design Automation Conference (DAC) pp. 1 - 6
Main Authors Yang Xie, Srivastava, Ankur
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.06.2017
Subjects
Clocks
Delays
Foundries
Integrated circuits
Logic gates
Security
Online AccessGet full text

Cover

More Information
Summary:Logic locking is a technique that has been proposed to thwart IC counterfeiting and overproduction by untrusted foundry. Recently, the security of logic locking is threatened by a new attack called SAT attack, which can effectively decipher the correct key of most logic locking techniques. In this paper, we propose a new technique called delay locking to enhance the security of existing logic locking techniques. For delay locking, the key into a locked circuit not only determines its functionality, but also its timing profile. A functionality-correct but timing-incorrect key will result in timing violations and thus making the circuit malfunction.
DOI:10.1145/3061639.3062226