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Approximate circuits often achieve exceptional trade-offs between computational accuracy and hardware efficiency, making them attractive for deployment as reusable Intellectual Property (IP) cores. However, safeguarding such circuits…

Hardware Architecture · Computer Science 2026-05-12 Lukas Sekanina , Vojtech Mrazek

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

Hardware reverse engineering is a universal tool for both legitimate and illegitimate purposes. On the one hand, it supports confirmation of IP infringement and detection of circuit malicious manipulations, on the other hand it provides…

Cryptography and Security · Computer Science 2019-10-04 Marc Fyrbiak , Sebastian Strauß , Christian Kison , Sebastian Wallat , Malte Elson , Nikol Rummel , Christof Paar

We introduce LLA, an effective intellectual property (IP) protection scheme for generative AI models. LLA leverages the synergy between hardware and software to defend against various supply chain threats, including model theft, model…

Cryptography and Security · Computer Science 2025-12-30 You Li , Guannan Zhao , Yuhao Ju , Yunqi He , Jie Gu , Hai Zhou

This paper presents a high-level circuit obfuscation technique to prevent the theft of intellectual property (IP) of integrated circuits. In particular, our technique protects a class of circuits that relies on constant multiplications,…

Cryptography and Security · Computer Science 2021-05-14 Levent Aksoy , Quang-Linh Nguyen , Felipe Almeida , Jaan Raik , Marie-Lise Flottes , Sophie Dupuis , Samuel Pagliarini

Semiconductor design companies are integrating proprietary intellectual property (IP) blocks to build custom integrated circuits (IC) and fabricate them in a third-party foundry. Unauthorized IC copies cost these companies billions of…

Cryptography and Security · Computer Science 2021-04-20 Christian Pilato , Animesh Basak Chowdhury , Donatella Sciuto , Siddharth Garg , Ramesh Karri

While various obfuscation methods exist in the digital domain, techniques for protecting Intellectual Property (IP) in the analog domain are mostly overlooked. Understandably, analog components have a small footprint as most of the surface…

Cryptography and Security · Computer Science 2022-09-07 Muayad J. Aljafar , Florence Azais , Marie-Lise Flottes , Samuel Pagliarini

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 is a promising technique for protecting integrated circuit designs while outsourcing their fabrication. Recently, graph neural network (GNN)-based link prediction attacks have been developed which can successfully break all…

Cryptography and Security · Computer Science 2023-05-11 Subhajit Dutta Chowdhury , Kaixin Yang , Pierluigi Nuzzo

Modern machine learning (ML) models are expensive IP and business competitiveness often depends on keeping this IP confidential. This in turn restricts how these models are deployed; for example, it is unclear how to deploy a model…

Cryptography and Security · Computer Science 2025-03-11 Eleanor Clifford , Adhithya Saravanan , Harry Langford , Cheng Zhang , Yiren Zhao , Robert Mullins , Ilia Shumailov , Jamie Hayes

Logic locking aims to protect the intellectual property (IP) of integrated circuit (IC) designs throughout the globalized supply chain. The SAIL attack, based on tailored machine learning (ML) models, circumvents combinational logic locking…

Cryptography and Security · Computer Science 2021-02-11 Lilas Alrahis , Satwik Patnaik , Johann Knechtel , Hani Saleh , Baker Mohammad , Mahmoud Al-Qutayri , Ozgur Sinanoglu

The era of widespread globalization has led to the emergence of hardware-centric security threats throughout the IC supply chain. Prior defenses like logic locking, layout camouflaging, and split manufacturing have been researched…

Cryptography and Security · Computer Science 2020-07-09 Nikhil Rangarajan , Satwik Patnaik , Johann Knechtel , Ramesh Karri , Ozgur Sinanoglu , Shaloo Rakheja

Numerous threats are associated with the globalized integrated circuit (IC) supply chain, such as piracy, reverse engineering, overproduction, and malicious logic insertion. Many obfuscation approaches have been proposed to mitigate these…

Cryptography and Security · Computer Science 2022-07-13 Zain UlAbideen , Tiago Diadami Perez , Mayler Martins , Samuel Pagliarini

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

We propose SANSCrypt, a novel sequential logic encryption scheme to protect integrated circuits against reverse engineering. Previous sequential encryption methods focus on modifying the circuit state machine such that the correct…

Cryptography and Security · Computer Science 2021-02-12 Yinghua Hu , Kaixin Yang , Shahin Nazarian , Pierluigi Nuzzo

The globalization of integrated circuit (IC) design and manufacturing has increased the exposure of hardware intellectual property (IP) to untrusted stages of the supply chain, raising concerns about reverse engineering, piracy, tampering,…

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

State-of-the-art attacks against cyclic logic obfuscation use satisfiability solvers that are equipped with a set of cycle avoidance clauses. These cycle avoidance clauses are generated in a pre-processing step and define various key…

Cryptography and Security · Computer Science 2020-01-27 Shervin Roshanisefat , Hadi Mardani Kamali , Houman Homayoun , Avesta Sasan

Semiconductor intellectual property (IP) theft incurs hundreds of billions in annual losses, driven by advanced reverse engineering (RE) techniques. Traditional ``cryptic'' IC camouflaging methods typically focus on hiding localized gate…

Cryptography and Security · Computer Science 2026-03-30 Junling Fan , David Koblah , Domenic Forte

Existing countermeasures for hardware IP protection, such as obfuscation, camouflaging, and redaction, aim to defend against confidentiality and integrity attacks. However, within the current threat model, these techniques overlook the…

Cryptography and Security · Computer Science 2025-01-22 Aritra Dasgupta , Sudipta Paria , Christopher Sozio , Andrew Lukefahr , Swarup Bhunia