Rafael O. Costa

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This paper proposes a framework for embedding a software watermark using obfuscation and tamper-proofing techniques, called SensorWatermark in order to inhibit piracy of embedded software in sensor nodes in a WSN. The watermark scheme proposed is characterized as an ordered sequence of obfuscations and guards implemented in the software, where such sequence(More)
Once the challenge of developing and trading national cars has been overcome, the new challenge becomes the accessibility/costs ratio. The answer to it was 1.000 cc engine cars which are called popular cars in Brazil. Nowadays, this segment represents over 50.0% of the Brazilian fleet. Economical issues are the major concern in the Brazilian market, rather(More)
Recent years we have witnessed the emergence of Shared Sensor Networks (SSNs) as a core component of cyber-physical systems for diverse applications. As Wireless Sensor and Actuator Networks (WSANs) design starts shifting from application-specific platforms to shared system infrastructures, a new but pressing research challenge is security. In scenarios(More)
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