Circumventing a Ring Oscillator Approach to FPGA-Based Hardware Trojan Detection

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Provided by: Iowa State University
Topic: Hardware
Format: PDF
Ring oscillators are commonly used as a locking mechanism that binds a hardware design to a specific area of silicon within an Integrated Circuit (IC). This locking mechanism can be used to detect malicious modifications to the hardware design, also known as a hardware Trojan, in situations where such modifications result in a change to the physical placement of the design on the IC. However, careful consideration is needed when designing ring oscillators for such a scenario to guarantee the integrity of the locking mechanism.
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