Abstract
An N-point Discrete Fourier Transform (DFT) has wide application such as speech signal amplitude/phase/frequency spectrum analysis and solving complex numerical problems etc. However a N-point DFT Application Specific Processor (ASP) can be prone to several hardware threats such as reverse engineering, counterfeiting, cloning and fraudulent ownership. This letter proposes a novel design flow of secured N-point DFT application specific processor using high-level transformation based structural obfuscation and crypto-steganography. The proposed design methodology integrates both obfuscation and steganography to yield a robust secured N-point DFT application specific processor design that is capable of achieving 75.28 percent obfuscation at gate-level structure and 99.5 percent enhanced in security w.r.t key-size than recent hardware steganography approach.
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