Attacks on Logic Locking, Obfuscation, Fine-grain Hardware Redaction, & Routing Table Configuration

Capture The Flag 2023


As part of these Red Team events, an open competition across the globe will take place for teams of students, faculty members or industry practitioners, on evaluating the security of the four individual countermeasures: (1) Logic Locking (LL); (2) State Space Obfuscation (SSO); (3) Fine-grain Hardware Redaction (FHR); and (4) Network on Chip (NoC) routing table configuration (RTC). The state-of-the art LL, SSO, FHR, and RTC techniques will be applied to a suite of open-source benchmark designs of varying size and complexities to create a suite of protected designs. The participating teams, considered as “Red Teams”, will then take these protected (transformed and locked) designs and try to break their defenses as well as quantify the level of security, whenever possible. They will report their findings and the results will help us enhance the four individual techniques (LL, SSO, FHR, and RTCand integrated layered countermeasures. The organizing committee will finally generate detailed reports, to be shared with the broader community, highlighting the process and outcomes of the events and comparative security evaluation of various countermeasures. Researchers at University of Florida, Texas A&M University, and the University of Maryland together will organize these two Red Team events and Universities across the globe and appropriate industry practitioners will participate in these events. The competition will have a final presentation session where the participating teams will present their key findings and a group of independent judges comprising of representatives from industry, academia, and government will participate as judges.


  • May 24: Registration Begins.
  • August 2: Registration Closes.
  • August 14: Provide Warm-up Designs.
  • October 12: Launch Challenge Round.
  • February 12: Preliminary Report Due.
  • March 8: Finalist Notification.
  • April 8: Final Report Due.
  • April 23: Announce Winners.

*Tentative timeline. Organizers have the rights to modify at any time, if needed.

How to Participate

Check the Registration and Rules pages.


  • 1st Prize: $10,000

  • 2nd Prize: $5,000


Please find winners of HeLLO CTF 2023 here: winners