Uma abordagem comparativa entre ICPs baseadas em Blockchain

Abstract

Digital certification systems play a key role in information security. In this context, Blockchain-based on Public Key Infrastructures (PKIs) applications are being studied to better meet new technological, society, and state demands. In this scenario, this research carried out tests of performance analysis in order to understand a Blockchain-based PKIs in more realistic way, verifying aspects such as scalability and response time of transactions. For this purpose, experiments were carried out in the Ethereum test environment, thus using the Rinkeby network, by comparing publicly recognized smart contracts, varying the load to assess scalability and response time. In addition, a testbed was developed to conduct such experiments and to characterize the experimental environment. For better accuracy, regarding the comparison between algorithms, linear regression models were used. Likewise, changes were made into smart contracts by exploring more intense cryptographic functions and a proposal was made to improve the execution time by distributing requests in different blocks of the Blockchain. The main results have shown important performance differences between tested algorithms and Blockchain-based PKIs applications limited by the maximum amount of transactions per Blockchain block in terms of scalability.