Cookies Policy
We use cookies to improve our site and your experience. By continuing to browse our site you accept our cookie policy. Find out More
Close
  • Menu
Interest
Topics
Details

Details

  • Name

    Manuel Eduardo Correia
  • Cluster

    Computer Science
  • Role

    Senior Researcher
  • Since

    01st January 2009
003
Publications

2016

Digital Signatures Workflows in Alfresco

Authors
Sousa, PR; Faria, P; Correia, ME; Resende, JS; Antunes, L;

Publication
Electronic Government and the Information Systems Perspective - 5th International Conference, EGOVIS 2016, Porto, Portugal, September 5-8, 2016, Proceedings

Abstract
There are some obstacles, towards a paperless office. One of them is the collection of signatures, since nearly half of all documents are printed for the sole purpose of collecting them. Digital signatures can have the same legal evidential validity as handwritten signatures, provided they are based on certificates issued by accredited certification authorities and the associated private keys are stored on tamper proof token security devices like smart cards. In this article, we propose a platform for secure digital signature workflow management that integrates secure token based digital signatures with the Enterprise Content Management Alfresco, where each user can associate a set of smart cards to his account. The documents can then be signed with the citizen card or other smart card that has digital signatures capabilities. We have implemented an Alfresco module that allows us to explore several workflow techniques to implement real task secure digital signatures workflows, as people for example do when they pass a paper document between various departments to be signed. Since all users can see the current state of the documents being signed during the entire signage process, important security properties like system trust are preserved. We also describe an external validation web service, that provides a way for users to validate signed documents. The validation service then shows to the user important document security properties like timestamps, certificates attributes and highlights the document integrity in face of the digital signatures that have been collected in the workflows defined by our module in Alfresco. © Springer International Publishing Switzerland 2016.

2015

Data Quality in HL7 Messages - A Real Case Analysis

Authors
Ferreira, R; Correia, ME; Rocha Goncalves, F; Cruz Correia, R;

Publication
2015 IEEE 28TH INTERNATIONAL SYMPOSIUM ON COMPUTER-BASED MEDICAL SYSTEMS (CBMS)

Abstract
The development of eHealth technologies over the last few years has been pushing healthcare institutions to evolve their own infrastructures. Along with this evolution, critical systems now need to use communication standards such as HL7 or DICOM in order to exchange information in a more meaningful and efficient way. However, healthcare institutions often experience complications when different systems communicate directly even when using communication standards. We aim to assess the quality of the data present in HL7 messages exchanged between different critical systems in a large healthcare facility and therefore propose an integration infrastructure that allows a real time and centralized way to manage, route and monitor the integration flows between various systems.

2015

Time/Space based Biometric Handwritten Signature Verification

Authors
Goncalves, RP; Augusto, AB; Correia, ME;

Publication
2015 10TH IBERIAN CONFERENCE ON INFORMATION SYSTEMS AND TECHNOLOGIES (CISTI)

Abstract
Handwritten signature recognition is still the most widely accepted method to validate paper based documents. However, in the digital world, there is no readymade way to distinguish a real handwritten signature on a scanned document from a forged copy of another signature made by the same person on another document that is simply "pasted" into the forged document. In this paper we describe how we are using the touch screen of smartphones or tablets to collect handwritten signature images and associated biometric markers derived from the motion direction of handwritten signatures that are made directly into the device touchscreen. These time base biometric markers can then be converted into signaling time waves, by using the dragging or lifting movements the user makes with a touch screen omnidirectional tip stylus, when he handwrites is signature at the device touchscreen. These time/space signaling time waves can then be converted into a biometric bit stream that can be matched with previously enrolled biometric markers of the user's handwritten signature. In this paper we contend that the collection of these simple biometric features is sufficient to achieve a level of user recognition and authentication that is sufficient for the majority of online user authentication and digital documents authenticity.

2015

Visualization of passively extracted HL7 production metrics

Authors
Ferreira, R; Correia, ME; Rocha Goncalves, F; Cruz Correia, R;

Publication
HEALTHINF 2015 - 8th International Conference on Health Informatics, Proceedings; Part of 8th International Joint Conference on Biomedical Engineering Systems and Technologies, BIOSTEC 2015

Abstract
Introduction: The improvements made to healthcare IT systems made over the past years led to the creation of a multitude of different applications essential to the institutions daily operations. Aim: We aim to create and install a system capable of displaying production metrics for healthcare management with little requirements, efforts and software providers involved. Methods: We propose a system capable of displaying production metrics for healthcare facilities, by extracting HL7 messages and other eHealth relevant protocols directly from the institution's network infrastructure. Our system is then able to populate a knowledge database with meaningful information derived from the gathered data. Results: Our system is currently being tested on a large healthcare facility where it extracts and analyses a daily average of 44,000 HL7 messages. The system is currently capable of inferring and displaying the daily distribution of healthcare related activities such as laboratory orders or even relevant billing information. Conclusion: HL7 messages moving over the network contain valuable information that can then be used to assess many relevant production metrics for the entire facility and from otherwise non-interoperable production systems that, in most cases, can only be seen as black boxes by other system integrators.

2014

Envisioning secure and usable access control for patients

Authors
Ferreira, AM; Lenzini, G; Pereira, CS; Augusto, AB; Correia, ME;

Publication
3nd IEEE International Conference on Serious Games and Applications for Health, SeGAH 2014, Rio de Janeiro, Brazil, May 14-16, 2014

Abstract
Several pilot tests show that patients who are able to access their Electronic Health Records (EHR), become more responsible and involved in the maintenance of their health. However, despite technologically feasible and legally possible, there is no validated or standardized toolset available yet, for patients to review and manage their EHR. Many privacy, security and usability issues must be solved first before this practice can be made mainstream. This paper proposes and discusses the design of an access control visual application that addresses most of these issues, and offers patients a secure, controlled and easy access to their EHR.

Supervised
thesis

2016

Biometrics on Mobile Devices Using the Heartbeat

Author
Marcelo Edgar Ferreira dos Santos

Institution
UP-FCUP

2016

Levantamento de problemas de segurança nas redes sem fios

Author
Ricardo Daniel Carvalho Godinho

Institution
UP-FCUP

2016

Emergence of Trust on P2P Networks

Author
Artur Jorge Rosendo Ferreira

Institution
UP-FCUP

2016

Secure VoIP communications

Author
João Miguel Maia Soares de Resende

Institution
UP-FCUP

2015

Handwritten signature authentication using motion detection and QR Codes

Author
Ricardo Manuel Pereira Gonçalves

Institution
UP-FCUP