Abstract

In this paper, a novel pseudo random bit generator is presented. It exhibits better inviolability properties, with respect to the traditional one, and it can be efficiently used in cryptography applications where high security is required. The proposed circuit is based on the classical linear feedback shift register (LFSR) with the feedback network dynamically modified. It has been evaluated with the most common randomness tests, giving excellent results. Moreover, the main statistical properties of the novel generator have been compared with those of a LFSR of equivalent length. The results have shown an equivalent performance of the circuits under comparison.

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