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Logic locking is used to protect integrated circuits (ICs) from piracy and counterfeiting. An encrypted IC implements the correct function only when the right key is input. Many existing logic-locking methods are subject to the powerful…

Cryptography and Security · Computer Science 2021-03-30 Jingbo Zhou , Xinmiao Zhang

Existing logic-locking attacks are known to successfully decrypt functionally correct key of a locked combinational circuit. It is possible to extend these attacks to real-world Silicon-based Intellectual Properties (IPs, which are…

Cryptography and Security · Computer Science 2021-02-18 Seetal Potluri , Aydin Aysu , Akash Kumar

The semiconductor industry's paradigm shift towards fabless integrated circuit (IC) manufacturing has introduced security threats, including piracy, counterfeiting, hardware Trojans, and overproduction. In response to these challenges,…

Cryptography and Security · Computer Science 2024-09-26 Felipe Almeida , Levent Aksoy , Samuel Pagliarini

Recently, Large Reasoning Models (LRMs) have demonstrated superior logical capabilities compared to traditional Large Language Models (LLMs), gaining significant attention. Despite their impressive performance, the potential for stronger…

Computation and Language · Computer Science 2025-05-27 Viet-Anh Nguyen , Shiqian Zhao , Gia Dao , Runyi Hu , Yi Xie , Luu Anh Tuan

Logic locking has received considerable interest as a prominent technique for protecting the design intellectual property from untrusted entities, especially the foundry. Recently, machine learning (ML)-based attacks have questioned the…

Cryptography and Security · Computer Science 2021-12-15 Lilas Alrahis , Satwik Patnaik , Muhammad Shafique , Ozgur Sinanoglu

Various logic-locking schemes have been proposed to protect hardware from intellectual property piracy and malicious design modifications. Since traditional locking techniques are applied on the gate-level netlist after logic synthesis,…

Cryptography and Security · Computer Science 2022-04-08 Dominik Sisejkovic , Luca Collini , Benjamin Tan , Christian Pilato , Ramesh Karri , Rainer Leupers

Logic locking remains one of the most promising defenses against hardware piracy, yet current approaches often face challenges in scalability and design overhead. In this paper, we present TLGLock, a new design paradigm that leverages the…

Cryptography and Security · Computer Science 2026-03-20 Abdullah Sahruri , Martin Margala

Logic locking has become a promising approach to provide hardware security in the face of a possibly insecure fabrication supply chain. While many techniques have focused on locking combinational logic (CL), an alternative latch-locking…

Cryptography and Security · Computer Science 2023-05-02 Dake Chen , Xuan Zhou , Yinghua Hu , Yuke Zhang , Kaixin Yang , Andrew Rittenbach , Pierluigi Nuzzo , Peter A. Beerel

Logic locking protects the integrity of hardware designs throughout the integrated circuit supply chain. However, recent machine learning (ML)-based attacks have challenged its fundamental security, initiating the requirement for the design…

Cryptography and Security · Computer Science 2023-05-04 Zeng Wang , Lilas Alrahis , Dominik Sisejkovic , Ozgur Sinanoglu

Due to the adoption of horizontal business models following the globalization of semiconductor manufacturing, the overproduction of integrated circuits (ICs) and the piracy of intellectual properties (IPs) can lead to significant damage to…

Cryptography and Security · Computer Science 2022-12-16 Yadi Zhong , Ujjwal Guin

In this work, we propose LUT-Lock, a novel Look-Up-Table-based netlist obfuscation algorithm, for protecting the intellectual property that is mapped to an FPGA bitstream or an ASIC netlist. We, first, illustrate the effectiveness of…

Cryptography and Security · Computer Science 2018-05-11 Hadi Mardani Kamali , Kimia Zamiri Azar , Kris Gaj , Houman Homayoun , Avesta Sasan

Chip designers outsource chip fabrication to external foundries, but at the risk of IP theft. Logic locking, a promising solution to mitigate this threat, adds extra logic gates (key gates) and inputs (key bits) to the chip so that it…

Cryptography and Security · Computer Science 2017-03-31 Mohamed El Massad , Jun Zhang , Siddharth Garg , Mahesh V. Tripunitara

Logic Obfuscation is a well renowned design-for-trust solution to protect an Integrated Circuit (IC) from unauthorized use and illegal overproduction by including key-gates to lock the design. This is particularly necessary for ICs…

Cryptography and Security · Computer Science 2024-04-12 Haimanti Chakraborty , Ranga Vemuri

Logic locking proposed to protect integrated circuits from serious hardware threats has been studied extensively over a decade. In these years, many efficient logic locking techniques have been proven to be broken. The state-of-the-art…

Cryptography and Security · Computer Science 2024-01-17 Levent Aksoy , Muhammad Yasin , Samuel Pagliarini

Logic locking has been proposed to safeguard intellectual property (IP) during chip fabrication. Logic locking techniques protect hardware IP by making a subset of combinational modules in a design dependent on a secret key that is withheld…

Cryptography and Security · Computer Science 2023-04-18 Hongye Xu , Dongfang Liu , Cory Merkel , Michael Zuzak

Logic Encryption is one of the most popular hardware security techniques which can prevent IP piracy and illegal IC overproduction. It introduces obfuscation by inserting some extra hardware into a design to hide its functionality from…

Cryptography and Security · Computer Science 2018-01-17 Rajit Karmakar , Santanu Chatopadhyay , Rohit Kapur

Globalization of IC manufacturing has led to increased security concerns, notably IP theft. Several logic locking techniques have been developed for protecting designs, but they typically display very large overhead, and are generally…

Cryptography and Security · Computer Science 2020-05-22 Joseph Sweeney , Mohammed Zackriya , Samuel Pagliarini , Lawrence Pileggi

Sequential logic locking has been studied over the last decade as a method to protect sequential circuits from reverse engineering. However, most of the existing sequential logic locking techniques are threatened by increasingly more…

Cryptography and Security · Computer Science 2022-01-19 Yuke Zhang , Yinghua Hu , Pierluigi Nuzzo , Peter A. Beerel

Large Language Model (LLM) inference requires substantial computational resources, yet CPU-based inference remains essential for democratizing AI due to the widespread availability of CPUs compared to specialized accelerators. However,…

Hardware Architecture · Computer Science 2025-10-01 Jingyao Zhang , Jaewoo Park , Jongeun Lee , Elaheh Sadredini

Oracle-less machine learning (ML) attacks have broken various logic locking schemes. Regular synthesis, which is tailored for area-power-delay optimization, yields netlists where key-gate localities are vulnerable to learning. Thus, we call…

Cryptography and Security · Computer Science 2023-03-07 Animesh Basak Chowdhury , Lilas Alrahis , Luca Collini , Johann Knechtel , Ramesh Karri , Siddharth Garg , Ozgur Sinanoglu , Benjamin Tan