Access Port Protection for Reconfigurable Scan Networks

Baranowski, Rafał; Kochte, Michael A.; Wunderlich, Hans-Joachim

doi:10.1007/s10836-014-5484-2

Cited by 23 publications

(9 citation statements)

References 29 publications

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“…R. Baranowski et al proposed in [45] a detection technique for filtering the access to the testing infrastructure. This solution is based on sequence filters that are placed on the TAP controller.…”

Section: ) Static Detectionmentioning

confidence: 99%

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A Survey on Security Threats and Countermeasures in IEEE Test Standards

et al. 2019

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The growth in complexity of Integrated Circuits (IC) is supported, amongst other factors, by the development of standardized test infrastructures. The feasibility of both end-ofmanufacturing and in-field tests heavily depends on the presence of these infrastructures that give detailed access to the IC. The standard test infrastructures are referred as IEEE Std. 1149.1 (JTAG), IEEE Std. 1500 and IEEE Std. 1687 (IJTAG). The security issues arising from the presence of these infrastructures have been fully exposed in the last two decades. This led to the publication of several practical attacks showing how a non-protected test infrastructure can end into the jeopardizing of the entire system. As a consequence, many countermeasures have been proposed. In this survey, we provide: (i) a taxonomy of the attacks that can be performed exploiting the standard test infrastructures; (ii) a taxonomy of countermeasures inspired by the kind of security primitives that are granted in each case.

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Section: ) Static Detectionmentioning

confidence: 99%

“…This implies that it is not possible to change the access policies without a complete redesign of the detectors. In the solution [45] the possibility of performing post-manufacturing test using different policies is contemplated. Nevertheless, once the filters are activated, it is not possible to obtain the higher privileges anymore.…”

Section: ) Static Detectionmentioning

confidence: 99%

A Survey on Security Threats and Countermeasures in IEEE Test Standards

et al. 2019

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“…Recently, we proposed a method for protecting individual instruments using sequence filters that are placed locally at the TAP and require no additional global wiring and no modification of the infrastructure [30], [31]. A sequence filter monitors all access operations and blocks them if they do not follow an allowed pattern.…”

Section: Problem Formulation and Related Workmentioning

confidence: 99%

“…• Experimental results show that the area overhead is only slightly sensitive to the number of protected instruments, and it is negligible if a hash core and a random number generator are already available on-chip. If slight modifications of the scan infrastructure are allowed, the authorization mechanism presented in this paper is preferable to our previous technique based on sequence filters [30], [31], especially when just a small fraction of instruments is protected. If required, the security of the proposed scheme can be further improved by replacing the underlying challengeresponse protocol with other authentication mechanisms, e.g.…”

Section: Problem Formulation and Related Workmentioning

confidence: 99%

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Fine-Grained Access Management in Reconfigurable Scan Networks

Baranowski

Kochte

Wunderlich

2015

IEEE Trans. Comput.-Aided Des. Integr. Circuits Syst.

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Modern VLSI designs incorporate a high amount of instrumentation that supports post-silicon validation and debug, volume test and diagnosis, as well as in-field system monitoring and maintenance. Reconfigurable scan architectures, as allowed by the novel IEEE Std 1149.1-2013 (JTAG) and IEEE Std 1687-2014 (IJTAG), emerge as a scalable mechanism for access to such on-chip instruments.While the on-chip instrumentation is crucial for meeting quality, dependability, and time-to-market goals, it is prone to abuse and threatens system safety and security. A secure access management method is mandatory to assure that critical instruments be accessible to authorized entities only.This work presents a novel protection method for fine-grained access management in complex reconfigurable scan networks based on a challenge-response authentication protocol. The target scan network is extended with an authorization instrument and Secure Segment Insertion Bits (S 2 IB) that together control the accessibility of individual instruments. To the best of the authors' knowledge, this is the first fine-grained access management scheme that scales well with the number of protected instruments and offers a high level of security. Compared with recent stateof-the-art techniques, this scheme is more favorable with respect to implementation cost, performance overhead, and provided security level.Index Terms-Debug and diagnosis, reconfigurable scan network, IJTAG, IEEE Std 1687, secure DFT, hardware security, instrument protection 0278-0070 (c)

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Securing IEEE 1687-2014 Standard Instrumentation Access by LFSR Key

Liu

Agrawal

2015

2015 IEEE 24th Asian Test Symposium (ATS)

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Access Port Protection for Reconfigurable Scan Networks

Cited by 23 publications

References 29 publications

A Survey on Security Threats and Countermeasures in IEEE Test Standards

A Survey on Security Threats and Countermeasures in IEEE Test Standards

Fine-Grained Access Management in Reconfigurable Scan Networks

Securing IEEE 1687-2014 Standard Instrumentation Access by LFSR Key

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