High quality random number generator from constrained devices using post processing methods applied to a high level network

• Guilherme Salgueiro Universidade de Aveiro
• Telmo Monteiro Universidade de Aveiro
• Diogo Costa Universidade de Aveiro
• Miguel Teixeira Universidade de Aveiro / Renault Cacia
• Armando N. Pinto Universidade de Aveiro
• José P. Santos Universidade de Aveiro

DOI: https://doi.org/10.5753/wquantum.2021.17222

Abstract

Secure transmission of data in communications based on constrained devices is an understudied issue with severe consequences, as it may jeopardize the entirety of a network's security. Most cryptographic methods are based on random numbers, however, obtaining these proves challenging on devices with such low computational power. In this paper, we evaluate the use of postprocessing techniques to increase the quality of randomly generated numbers in 32-bit RISC-V processors, within the context of a blockchain network. Through these methods an increase of entropy of 80% was achieved.

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