Source : VHDL

Abstract:

This paper presents a novel approach to design obfuscated circuits for digital signal processing (DSP) applications using high-level transformations, a key-based obfuscating finite-state machine (FSM), and a reconfigurator. The goal is to design DSP circuits that are harder to reverse engineer. High level transformations of iterative data-flow graphs have been exploited for area-speed-power tradeoffs. This is the first attempt to develop a design flow to apply high level transformations that not only meet these tradeoffs but also simultaneously obfuscate the architectures both structurally and functionally. Functional obfuscation is accomplished by requiring use of the correct initialization key, and configure data.  Structural obfuscation is also achieved by the proposed methodology via high-level transformations. The proposed architecture of this paper analysis the logic size, area and power consumption using Xilinx 14.2

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