Tecnologias digitais no processo de ensino e aprendizagem

Anais do II Seminário Seminário Estadual PIBID do Paraná: tecendo saberes / organizado por Dulcyene Maria Ribeiro e Catarina Costa Fernandes — Foz do Iguaçu: Unioeste; Unila, 2014Diversas tecnologias que não foram, necessariamente, criadas para serem ferramentas de ensino e aprendizagem podem ser utilizadas em sala de aula. Para utilizá-las com eficiência, é necessário conhecê-las e analisá-las à luz das teorias pertinentes. Neste artigo são mostradas algumas destas ferramentas e como podem ser utilizadas no processo de ensino e aprendizagem. As tecnologias estão em análise no projeto PIBID – Sistemas de Informação – da Universidade Estadual do Norte do Paraná, sendo que os resultados preliminares mostram que podem ser utilizadas, mas que é necessário um conhecimento sobre elas para que o processo seja produtiv

Secure Cloud Storage with Client-Side Encryption Using a Trusted Execution Environment

With the evolution of computer systems, the amount of sensitive data to be stored as well as the number of threats on these data grow up, making the data confidentiality increasingly important to computer users. Currently, with devices always connected to the Internet, the use of cloud data storage services has become practical and common, allowing quick access to such data wherever the user is. Such practicality brings with it a concern, precisely the confidentiality of the data which is delivered to third parties for storage. In the home environment, disk encryption tools have gained special attention from users, being used on personal computers and also having native options in some smartphone operating systems. The present work uses the data sealing, feature provided by the Intel Software Guard Extensions (Intel SGX) technology, for file encryption. A virtual file system is created in which applications can store their data, keeping the security guarantees provided by the Intel SGX technology, before send the data to a storage provider. This way, even if the storage provider is compromised, the data are safe. To validate the proposal, the Cryptomator software, which is a free client-side encryption tool for cloud files, was integrated with an Intel SGX application (enclave) for data sealing. The results demonstrate that the solution is feasible, in terms of performance and security, and can be expanded and refined for practical use and integration with cloud synchronization services