International Technology Roadmap for Semiconductors 2003の要求清浄度について － シリコンウエハ表面と雰囲気環境に要求される清浄度, 分析方法の現状について －

Editor's note:Today's integrated circuits are vulnerable to hardware Trojans, which are malicious alterations to the circuit, either during design or fabrication. This article presents a classification of hardware Trojans and a survey of published techniques for Trojan detection.

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A Survey of Hardware Trojan Taxonomy and Detection

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Detection, Estimation, and Modulation Theory

Security of a computer system has been traditionally related to the security of the software or the information being processed. The underlying hardware used for information processing has been considered trusted. The emergence of hardware Trojan attacks violates this root of trust. These attacks, in the form of malicious modifications of electronic hardware at different stages of its life cycle, pose major security concerns in the electronics industry. An adversary can mount such an attack with an objective to cause operational failure or to leak secret information from inside a chip-e.g., the key in a cryptographic chip, during field operation. Global economic trend that encourages increased reliance on untrusted entities in the hardware design and fabrication process is rapidly enhancing the vulnerability to such attacks. In this paper, we analyze the threat of hardware Trojan attacks; present attack models, types, and scenarios; discuss different forms of protection approaches, both proactive and reactive; and describe emerging attack modes, defenses, and future research pathways.

Hardware Trojan Attacks: Threat Analysis and Countermeasures

Internet of Things (IoT), also referred to as the Internet of Objects, is envisioned as a transformative approach for providing numerous services. Compact smart devices constitute an essential part of IoT. They range widely in use, size, energy capacity, and computation power. However, the integration of these smart things into the standard Internet introduces several security challenges because the majority of Internet technologies and communication protocols were not designed to support IoT. Moreover, commercialization of IoT has led to public security concerns, including personal privacy issues, threat of cyber attacks, and organized crime. In order to provide a guideline for those who want to investigate IoT security and contribute to its improvement, this survey attempts to provide a comprehensive list of vulnerabilities and countermeasures against them on the edge-side layer of IoT, which consists of three levels: (i) edge nodes, (ii) communication, and (iii) edge computing. To achieve this goal, we first briefly describe three widely-known IoT reference models and define security in the context of IoT. Second, we discuss the possible applications of IoT and potential motivations of the attackers who target this new paradigm. Third, we discuss different attacks and threats. Fourth, we describe possible countermeasures against these attacks. Finally, we introduce two emerging security challenges not yet explained in detail in previous literature.

A Comprehensive Study of Security of Internet-of-Things

For reasons of economy, critical systems will inevitably depend on electronics made in untrusted factories. A proposed new hardware Trojan taxonomy provides a first step in better understanding existing and potential threats.

Trustworthy Hardware: Identifying and Classifying Hardware Trojans

As the electronic component supply chain grows more complex due to globalization, with parts coming from a diverse set of suppliers, counterfeit electronics have become a major challenge that calls for immediate solutions. Currently, there are a few standards and programs available that address the testing for such counterfeit parts. However, not enough research has yet addressed the detection and avoidance of all counterfeit partsVrecycled, remarked, overproduced, cloned, out-of-spec/defective, and forged documentationVcurrently infiltrating the electronic component supply chain. Even if they work initially, all these parts may have reduced lifetime and pose reliability risks. In this tutorial, we will provide a review of some of the existing counterfeit detection and avoidance methods. We will also discuss the challenges ahead for im- plementing these methods, as well as the development of new detection and avoidance mechanisms.

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Counterfeit Integrated Circuits: A Rising Threat in the Global Semiconductor Supply Chain

The areas of hardware security and trust have experienced major growth over the past several years. However, research in Trojan detection and prevention lacks standard benchmarks and measurements, resulting in inconsistent research outcomes, and ambiguity in analyzing strengths and weaknesses in the techniques developed by different research teams and their advancements to the state-of-the-art. We have developed innovative methodologies that, for the first time, more effectively address the problem. We have developed a vulnerability analysis flow. The flow determines hard-to-detect areas in a circuit that would most probably be used for Trojan implementation to ensure a Trojan goes undetected during production test and extensive functional test analysis. Furthermore, we introduce the Trojan detectability metric to quantify Trojan activation and effect. This metric offers a fair comparison for analyzing weaknesses and strengths of Trojan detection techniques. Using these methodologies, we have developed a large number of trust benchmarks that are available for use by the public, as well as researchers and practitioners in the field.

On design vulnerability analysis and trust benchmarks development

The counterfeiting of electronic components has become a major challenge in the 21st century. The electronic component supply chain has been greatly affected by widespread counterfeit incidents. A specialized service of testing, detection, and avoidance must be created to tackle the worldwide outbreak of counterfeit integrated circuits (ICs). So far, there are standards and programs in place for outlining the testing, documenting, and reporting procedures. However, there is not yet enough research addressing the detection and avoidance of such counterfeit parts. In this paper we will present, in detail, all types of counterfeits, the defects present in them, and their detection methods. We will then describe the challenges to implementing these test methods and to their effectiveness. We will present several anti-counterfeit measures to prevent this widespread counterfeiting, and we also consider the effectiveness and limitations of these anti-counterfeiting techniques.

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Mohammad Tehranipoor

Papers

A Survey of Hardware Trojan Taxonomy and Detection

Trustworthy Hardware: Identifying and Classifying Hardware Trojans

Counterfeit Integrated Circuits: A Rising Threat in the Global Semiconductor Supply Chain

On design vulnerability analysis and trust benchmarks development

Counterfeit Integrated Circuits: Detection, Avoidance, and the Challenges Ahead