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Publications

2021

Provisioning, Authentication and Secure Communications for IoT Devices on FIWARE

Authors
Sousa, P; Magalhaes, L; Resende, J; Martins, R; Antunes, L;

Publication
SENSORS

Abstract
The increasing pervasiveness of the Internet of Things is resulting in a steady increase of cyberattacks in all of its facets. One of the most predominant attack vectors is related to its identity management, as it grants the ability to impersonate and circumvent current trust mechanisms. Given that identity is paramount to every security mechanism, such as authentication and access control, any vulnerable identity management mechanism undermines any attempt to build secure systems. While digital certificates are one of the most prevalent ways to establish identity and perform authentication, their provision at scale remains open. This provisioning process is usually an arduous task that encompasses device configuration, including identity and key provisioning. Human configuration errors are often the source of many security and privacy issues, so this task should be semi-autonomous to minimize erroneous configurations during this process. In this paper, we propose an identity management (IdM) and authentication method called YubiAuthIoT. The overall provisioning has an average runtime of 1137.8 ms +/- 65.11+delta. We integrate this method with the FIWARE platform, as a way to provision and authenticate IoT devices.

2021

Privacy-Preserving Generative Adversarial Network for Case-Based Explainability in Medical Image Analysis

Authors
Montenegro, H; Silva, W; Cardoso, JS;

Publication
IEEE ACCESS

Abstract
Although Deep Learning models have achieved incredible results in medical image classification tasks, their lack of interpretability hinders their deployment in the clinical context. Case-based interpretability provides intuitive explanations, as it is a much more human-like approach than saliency-map-based interpretability. Nonetheless, since one is dealing with sensitive visual data, there is a high risk of exposing personal identity, threatening the individuals' privacy. In this work, we propose a privacy-preserving generative adversarial network for the privatization of case-based explanations. We address the weaknesses of current privacy-preserving methods for visual data from three perspectives: realism, privacy, and explanatory value. We also introduce a counterfactual module in our Generative Adversarial Network that provides counterfactual case-based explanations in addition to standard factual explanations. Experiments were performed in a biometric and medical dataset, demonstrating the network's potential to preserve the privacy of all subjects and keep its explanatory evidence while also maintaining a decent level of intelligibility.

2021

Seeking Out Camille, and Being Open to Others

Authors
Hill, RK; Baquero, C;

Publication
COMMUNICATIONS OF THE ACM

Abstract
Robin K. Hill on overcoming biases against alternative views, and Carlos Baquero on his search for the elusive Camille Nous.

2021

Intelligent Systems Design and Applications - 20th International Conference on Intelligent Systems Design and Applications (ISDA 2020) held December 12-15, 2020

Authors
Abraham, A; Piuri, V; Gandhi, N; Siarry, P; Kaklauskas, A; Madureira, A;

Publication
ISDA

Abstract

2021

Application of non-pressure-based coupled procedures for the solution of heat and mass transfer for the incompressible fluid flow phenomenon

Authors
Zolfagharnasab, MH; Salimi, M; Aghanajafi, C;

Publication
International Journal of Heat and Mass Transfer

Abstract

2021

Advances in Intelligent Data Analysis XIX - 19th International Symposium on Intelligent Data Analysis, IDA 2021, Porto, Portugal, April 26-28, 2021, Proceedings

Authors
Abreu, PH; Rodrigues, PP; Fernández, A; Gama, J;

Publication
IDA

Abstract

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