Security against hardware Trojan through a novel application of design obfuscation
Malicious hardware Trojan circuitry inserted in safety-critical applications is a major threat to national security. In this work, we propose a novel application of a key-based obfuscation technique to achieve security against hardware Trojans. The obfuscation scheme is based on modifying the state...
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| Vydáno v: | 2009 IEEE/ACM International Conference on Computer-Aided Design - Digest of Technical Papers s. 113 - 116 |
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| Jazyk: | angličtina |
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IEEE
02.11.2009
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| ISSN: | 1092-3152 |
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| Abstract | Malicious hardware Trojan circuitry inserted in safety-critical applications is a major threat to national security. In this work, we propose a novel application of a key-based obfuscation technique to achieve security against hardware Trojans. The obfuscation scheme is based on modifying the state transition function of a given circuit by expanding its reachable state space and enabling it to operate in two distinct modes - the normal mode and the obfuscated mode. Such a modification obfuscates the rareness of the internal circuit nodes, thus making it difficult for an adversary to insert hard-to-detect Trojans. It also makes some inserted Trojans benign by making them activate only in the obfuscated mode. The combined effect leads to higher Trojan detectability and higher level of protection against such attack. Simulation results for a set of benchmark circuits show that the scheme is capable of achieving high levels of security at modest design overhead. |
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| AbstractList | Malicious hardware Trojan circuitry inserted in safety-critical applications is a major threat to national security. In this work, we propose a novel application of a key-based obfuscation technique to achieve security against hardware Trojans. The obfuscation scheme is based on modifying the state transition function of a given circuit by expanding its reachable state space and enabling it to operate in two distinct modes - the normal mode and the obfuscated mode. Such a modification obfuscates the rareness of the internal circuit nodes, thus making it difficult for an adversary to insert hard-to-detect Trojans. It also makes some inserted Trojans benign by making them activate only in the obfuscated mode. The combined effect leads to higher Trojan detectability and higher level of protection against such attack. Simulation results for a set of benchmark circuits show that the scheme is capable of achieving high levels of security at modest design overhead. |
| Author | Bhunia, S. Chakraborty, R.S. |
| Author_xml | – sequence: 1 givenname: R.S. surname: Chakraborty fullname: Chakraborty, R.S. organization: Dept. of Electr. Eng. & Comp. Sci., Case Western Reserve Univ., Cleveland, OH, USA – sequence: 2 givenname: S. surname: Bhunia fullname: Bhunia, S. organization: Dept. of Electr. Eng. & Comp. Sci., Case Western Reserve Univ., Cleveland, OH, USA |
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| Snippet | Malicious hardware Trojan circuitry inserted in safety-critical applications is a major threat to national security. In this work, we propose a novel... |
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| SubjectTerms | Circuit simulation Circuit testing Computational modeling Design obfuscation Hardware hardware security hardware Trojan Information security Logic design National security Permission Protection State-space methods |
| Title | Security against hardware Trojan through a novel application of design obfuscation |
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