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Advances in reverse engineering make it challenging to deploy any on-chip information in a way that is hidden from a determined attacker. A variety of techniques have been proposed for design obfuscation including look-alike cells in which…

Cryptography and Security · Computer Science 2017-10-26 Shahrzad Keshavarz , Daniel Holcomb

The threat of hardware reverse engineering is a growing concern for a large number of applications. A main defense strategy against reverse engineering is hardware obfuscation. In this paper, we investigate physical obfuscation techniques,…

Cryptography and Security · Computer Science 2019-10-03 Arunkumar Vijayakumar , Vinay C. Patil , Daniel E. Holcomb , Christof Paar , Sandip Kundu

The outsourcing of the design and manufacturing of integrated circuits has raised severe concerns about the piracy of Intellectual Properties and illegal overproduction. Logic locking has emerged as an obfuscation technique to protect…

Cryptography and Security · Computer Science 2022-10-14 Yadi Zhong , Ayush Jain , M. Tanjidur Rahman , Navid Asadizanjani , Jiafeng Xie , Ujjwal Guin

In this paper, we assess the security and testability of the state-of-the-art design-for-security (DFS) architectures in the presence of scan-chain locking/obfuscation, a group of solution that has previously proposed to restrict…

Cryptography and Security · Computer Science 2020-05-12 Hadi Mardani Kamali , Kimia Zamiri Azar , Houman Homayoun , Avesta Sasan

Logic Locking is a well-accepted protection technique to enable trust in the outsourced design and fabrication processes of integrated circuits (ICs) where the original design is modified by incorporating additional key gates in the…

Cryptography and Security · Computer Science 2020-07-22 Ayush Jain , Tanjidur Rahman , Ujjwal Guin

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

Obfuscation is a technique for protecting hardware intellectual property (IP) blocks against reverse engineering, piracy, and malicious modifications. Current obfuscation efforts mainly focus on functional locking of a design to prevent…

Cryptography and Security · Computer Science 2018-10-01 Prabuddha Chakraborty , Jonathan Cruz , Swarup Bhunia

In a zero-trust fabless paradigm, designers are increasingly concerned about hardware-based attacks on the semiconductor supply chain. Logic locking is a design-for-trust method that adds extra key-controlled gates in the circuits to…

Cryptography and Security · Computer Science 2024-02-07 Yeganeh Aghamohammadi , Amin Rezaei

Due to cost benefits, supply chains of integrated circuits (ICs) are largely outsourced nowadays. However, passing ICs through various third-party providers gives rise to many security threats, like piracy of IC intellectual property or…

Logic locking (LL) has gained attention as a promising intellectual property protection measure for integrated circuits. However, recent attacks, facilitated by machine learning (ML), have shown the potential to predict the correct key in…

Cryptography and Security · Computer Science 2024-03-05 Yinghua Hu , Kaixin Yang , Subhajit Dutta Chowdhury , Pierluigi Nuzzo

Universal Circuits (UCs) offer a promising approach to hardware Intellectual Property (IP) obfuscation, leveraging cryptographic principles to hide both structure and function in a programmable logic fabric. Their adaptability makes them…

Cryptography and Security · Computer Science 2026-04-07 Zain Ul Abideen , Deepali Garg , Lawrence Pileggi , Samuel Pagliarini

Logic locking is a method to prevent intellectual property (IP) piracy. However, under a reasonable attack model, SAT-based methods have proven to be powerful in obtaining the secret key. In response, many locking techniques have been…

Cryptography and Security · Computer Science 2020-09-23 Joseph Sweeney , Marijn J. H. Heule , Lawrence Pileggi

Split manufacturing (SM) and layout camouflaging (LC) are two promising techniques to obscure integrated circuits (ICs) from malicious entities during and after manufacturing. While both techniques enable protecting the intellectual…

Cryptography and Security · Computer Science 2019-08-13 Satwik Patnaik , Mohammed Ashraf , Ozgur Sinanoglu , Johann Knechtel

Logic locking has been a promising solution to many hardware security threats, such as intellectual property infringement and overproduction. Due to the increased attention that threats have received, many efficient specialized attacks…

Cryptography and Security · Computer Science 2023-01-12 F. Almeida , L. Aksoy , Q-L. Nguyen , S. Dupuis , M-L. Flottes , S. Pagliarini

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

Deep neural networks (DNNs) are utilized in numerous image processing, object detection, and video analysis tasks and need to be implemented using hardware accelerators to achieve practical speed. Logic locking is one of the most popular…

Cryptography and Security · Computer Science 2022-10-10 Jingbo Zhou , Xinmiao Zhang

The globalization of the electronics supply chain requires effective methods to thwart reverse engineering and IP theft. Logic locking is a promising solution, but there are many open concerns. First, even when applied at a higher level of…

Hardware Architecture · Computer Science 2022-06-08 Christian Pilato , Luca Collini , Luca Cassano , Donatella Sciuto , Siddharth Garg , Ramesh Karri

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

Over the years, many techniques have been introduced to protect integrated circuits (ICs) from hardware security threats that emerged in the globalized IC manufacturing supply chain, such as overproduction and piracy. However, most of these…

Cryptography and Security · Computer Science 2026-04-14 Levent Aksoy , Muhammad Sohaib Munir , Sedat Akleylek