Sistema de votação remoto baseado em blockchain

Abstract

As computer systems used by individuals and organizations evolve, the amount of confidential data to be stored and the number of threats against them also increase. In this scenario, Intel launched in late 2015, along with its 6th generation processor line (Skylake), the Software Guard Extensions (Intel SGX) technology, which provides security mechanisms for executing code within a protected area in the software, called an enclave, allowing developers to integrate it with their systems. Among the provided mechanisms, the technology offers the feature of sealing data within the enclave, allowing them to be securely stored using a unique encryption key generated and maintained by the processor based on its information and that of the enclave. However, ensuring the security of data across all computer systems is a complex process. This paper utilizes the data sealing feature provided by Intel SGX technology for file encryption, thus creating a virtual file system where applications can store their data, with the security guarantees provided by Intel SGX technology, so that if the storage media is compromised, the data remains secure. To validate the proposal, the Cryptomator software is integrated with an enclave for data sealing. The results demonstrate that the solution is feasible, both in terms of performance and security, and can be expanded and refined for practical use.