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Integrated circuit (IC) piracy and overproduction are serious issues that threaten the security and integrity of a system. Logic locking is a type of hardware obfuscation technique where additional key gates are inserted into the circuit.…

Cryptography and Security · Computer Science 2021-01-27 Michael Yue , Fatemeh Tehranipoor

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

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

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

In contrast to software reverse engineering, there are hardly any tools available that support hardware reversing. Therefore, the reversing process is conducted by human analysts combining several complex semi-automated steps. However,…

Cryptography and Security · Computer Science 2019-10-02 Carina Wiesen , Nils Albartus , Max Hoffmann , Steffen Becker , Sebastian Wallat , Marc Fyrbiak , Nikol Rummel , Christof Paar

The outsourcing of the design and manufacturing of integrated circuits (ICs) in the current horizontal semiconductor integration flow has posed various security threats due to the presence of untrusted entities, such as overproduction of…

Cryptography and Security · Computer Science 2020-10-12 Yuqiao Zhang , Ayush Jain , Pinchen Cui , Ziqi Zhou , Ujjwal Guin

Logic locking refers to a set of techniques that can protect integrated circuits (ICs) from counterfeiting, piracy and malicious functionality changes by an untrusted foundry. It achieves these goals by introducing new inputs, called key…

Cryptography and Security · Computer Science 2020-01-20 Deepak Sirone , Pramod Subramanyan

Intellectual Property (IP) theft is a serious concern for the integrated circuit (IC) industry. To address this concern, logic locking countermeasure transforms a logic circuit to a different one to obfuscate its inner details. The…

Cryptography and Security · Computer Science 2021-02-18 Qinhan Tan , Seetal Potluri , Aydin Aysu

This article presents an asynchronous FPGA architecture for implementing cryptographic algorithms secured against physical cryptanalysis. We discuss the suitability of asynchronous reconfigurable architectures for such applications before…

While financially advantageous, outsourcing key steps, such as testing, to potentially untrusted Outsourced Assembly and Test (OSAT) companies may pose a risk of compromising on-chip assets. Obfuscation of scan chains is a technique that…

Cryptography and Security · Computer Science 2019-09-11 Lilas Alrahis , Muhammad Yasin , Nimisha Limaye , Hani Saleh , Baker Mohammad , Mahmoud Al-Qutayri , Ozgur Sinanoglu

Security is an important facet of integrated circuit design for many applications. IP privacy and Trojan insertion are growing threats as circuit fabrication in advanced nodes almost inevitably relies on untrusted foundries. A proposed…

Cryptography and Security · Computer Science 2020-05-21 Joseph Sweeney , Samuel Pagliarini , Lawrence Pileggi

The proliferation of face forgery techniques has raised significant concerns within society, thereby motivating the development of face forgery detection methods. These methods aim to distinguish forged faces from genuine ones and have…

Computer Vision and Pattern Recognition · Computer Science 2024-02-20 Jiawei Liang , Siyuan Liang , Aishan Liu , Xiaojun Jia , Junhao Kuang , Xiaochun Cao

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

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

Layout camouflaging can protect the intellectual property of modern circuits. Most prior art, however, incurs excessive layout overheads and necessitates customization of active-device manufacturing processes, i.e., the front-end-of-line…

Cryptography and Security · Computer Science 2020-03-25 Satwik Patnaik , Mohammed Ashraf , Ozgur Sinanoglu , Johann Knechtel

Fabrication-less design houses outsource their designs to 3rd party foundries to lower fabrication cost. However, this creates opportunities for a rogue in the foundry to introduce hardware Trojans, which stay inactive most of the time and…

Cryptography and Security · Computer Science 2017-05-03 Xiaotong Cui , Samah Saeed , Alwin Zulehner , Robert Wille , Rolf Drechsler , Kaijie Wu , Ramesh Karri

Software obfuscation plays a crucial role in protecting intellectual property in software from reverse engineering attempts. While some obfuscation techniques originate from the obfuscation-reverse engineering arms race, others stem from…

Cryptography and Security · Computer Science 2023-04-05 Giulio De Pasquale , Fukutomo Nakanishi , Daniele Ferla , Lorenzo Cavallaro

We propose a secure and lightweight key based challenge obfuscation for strong PUFs. Our architecture is designed to be resilient against learning attacks. Our obfuscation mechanism uses non-linear feedback shift registers (NLFSRs).…

Cryptography and Security · Computer Science 2022-07-25 Kleber Stangherlin , Zhuanhao Wu , Hiren Patel , Manoj Sachdev

The main goal of design obfuscation schemes is to protect sensitive design details from untrusted parties in the VLSI supply chain, including but not limited to off-shore foundries and untrusted end users. In this work, we provide a…

Cryptography and Security · Computer Science 2025-08-20 Yuntao Liu , Abir Akib , Zelin Lu , Qian Xu , Ankur Srivastava , Gang Qu , David Kehlet , Nij Dorairaj

This paper first describes an `obfuscating' compiler technology developed for encrypted computing, then examines if the trivial case without encryption produces much-sought indistinguishability obfuscation.

Cryptography and Security · Computer Science 2018-11-30 Peter T. Breuer , Jonathan P. Bowen