2020
DOI: 10.1109/tcsi.2020.2977920
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A New Class of Digital Circuits for the Design of Entropy Sources in Programmable Logic

Abstract: We propose a novel class of Digital Nonlinear Oscillators (DNOs) supporting complex dynamics, including chaos, suitable for the definition of high-performance and low-complexity entropy sources in Programmable Logic Devices (PLDs). We derive our proposal from the analysis of simplified models, investigated as non-autonomous nonlinear dynamical systems under different excitation conditions. The study lead the authors to the design of a fully digital entropy source consuming only two slices of a Xilinx FPGA, inc… Show more

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Cited by 18 publications
(13 citation statements)
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References 36 publications
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“…For TRNGs, various papers present different architectures that aim at balancing resource consumption and high performance, creating appropriate trade-offs and exploiting mechanisms such as edge sampling, entropy sources in programmable logic, etc. [41,66,67]. Other published research papers develop a unified architecture of PUFs and TRNGs with the purpose of enhancing the compactness, scalability, flexibility, and reconfigurability of the system while increasing the security and privacy [68,69].…”
Section: Solutions In Cryptographymentioning
confidence: 99%
“…For TRNGs, various papers present different architectures that aim at balancing resource consumption and high performance, creating appropriate trade-offs and exploiting mechanisms such as edge sampling, entropy sources in programmable logic, etc. [41,66,67]. Other published research papers develop a unified architecture of PUFs and TRNGs with the purpose of enhancing the compactness, scalability, flexibility, and reconfigurability of the system while increasing the security and privacy [68,69].…”
Section: Solutions In Cryptographymentioning
confidence: 99%
“…We have evaluated the capability of the proposed algorithm to select the best source among a set of sixteen based on 7-nodes Galois Ring Oscillators [30], [33], [36], [37], implemented in a Xilinx Artix 7 xc7a35 FPGA. The entropy of such Digital Nonlinear Oscillators (DNOs) is sensitive to the variability of the delays introduced by the FPGA routing circuitry in the feedback loops [30], [33], [37], and the 16 entropy sources were deliberately obtained varying the routing paths. The nonlinear dynamical systems were digitized (1bit digitization) according to a sampling frequency of 100MHz, as discussed in [30], [33], and [37].…”
Section: B Experiments: Application To Fpga Digital Nonlinear Oscilla...mentioning
confidence: 99%
“…The entropy of such Digital Nonlinear Oscillators (DNOs) is sensitive to the variability of the delays introduced by the FPGA routing circuitry in the feedback loops [30], [33], [37], and the 16 entropy sources were deliberately obtained varying the routing paths. The nonlinear dynamical systems were digitized (1bit digitization) according to a sampling frequency of 100MHz, as discussed in [30], [33], and [37].…”
Section: B Experiments: Application To Fpga Digital Nonlinear Oscilla...mentioning
confidence: 99%
“…In [23], the analog transfer function for an LUT6 instance used as a two-input xor gate is modeled as:…”
Section: A Numerical Analysismentioning
confidence: 99%