Análise Comparativa da Utilização de Técnicas de Segurança no Offloading Computacional

Abstract

Mobile accounts for approximately half of the web traffic worldwide. In the fourth trimester of 2021, mobile devices (not counting the use of tablets) generated 54,4% of global traffic to websites, a number that constantly varies around 50% since the beginning of 2017. The area of mobile devices has been increasing over the years. However, these devices still have limitations in their computing resources (storage, processing) and energy. It is for these limitations that, depending on the type of application running on a mobile device, this application may require resources not available on the device so that the execution of a particular action occurs quickly and efficiently, and consequently, does not cause a good experience of usability for the user of these applications. There are already ways to mitigate this problem, one of them is Mobile Cloud Computing (MCC), which expands device resources to a remote environment, preserving local resources and enriching the user experience. However, with this operation of migrating specific processing to a remote environment, data is transported on the network without any protection, and many applications have sensitive data that cannot be exposed without security. Therefore, it is necessary to use security mechanisms to guarantee the privacy of this data. Considering the problems showed, the research development is based on the study of security techniques that ensure the privacy of user data during data migration. These techniques are homomorphic encryption and steganography. As a final result, it is possible to conclude that the use of the Steganography algorithm proved to be more efficient when compared with the Homomorphic encryption algorithm for most of the test cases carried out in the research, since for the multiplication operation of matrices with dimensions of 250x250, for example, using Homomorphic encryption has a total time spent of 6.7 minutes, while this same operation using steganography takes about 1000 milliseconds.