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This brief proposes a class of nonlinear pseudorandom number generators (PRNGs) based on coupling linear generators (DX generators) with a nonlinear generator (digitized Logistic map). By breaking the linearity, the unpredictability of the proposed generators in the family of coupling PRNGs is enhanced while the nice properties of efficiency, long period, and excellent statistical properties are preserved...
We present a new reseeding-mixing method to extend the system period length and to enhance the statistical properties of a chaos-based logistic map pseudo random number generator (PRNG). The reseeding method removes the short periods of the digitized logistic map and the mixing method extends the system period length to by “xoring” with a DX generator. When implemented in the TSMC 0.18- ...
MixColumns/InvMixColumns dominates both the logic resource and the critical delay in advanced encryption standard (AES) hardware implementation with direct mapping S-boxes. The proposed decomposition method optimizes the area and the delay of integrated MixColumns/InvMixColumns circuit. Theoretically, the proposed short-path circuit reduces the area up to 42% with the same 5 XOR gates delay (Y.-K...
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