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Provas de Dissertação de Mestrado (MERC)

9 Novembro 2011, 09:18 - Maria João Silva Carvalho

Filipe Alexandre Ricardo Marques

Smartcards: Remote Authentication Using Biometrics


Presidente: Professor Paulo Jorge Pires Ferreira

Orientador: Professor Ricardo Jorge Fernandes Chaves

Co-Orientador: Engenheiro Carlos Lima

Vogais: Professor Carlos Nuno da Cruz Ribeiro

Data: 09/11/2011 -09:00h / Sala 2.10 do IST-TagusPark.


Abstract: This thesis proposes an architecture for a secure and reliable remote authentication system, based on local biometric signature validation. Biometric systems are a more secure and reliable authentication mechanism than those that use PIN and passwords. This authentication is based on something that is unique to each person and cannot be borrowed, ensuring the presence of the specific person during the authentication process. Additionally, biometric systems are a more elegant approach to authentication, eliminating the need for the user to memorize any secret information, protecting him against the theft of his secret.

Despite the advantages of biometric systems, they are not used in remote authentication applications, given that it is not viable to send the biometric template via remote connections.

The solution herein proposed is based on the utilization of Smart Cards in a PKI structure, in order to perform a remote authentication. The private key of the user is thus used by the Smart Card to sign a challenge sent by the remote server, proving his identity. This key is protected by a local biometric authentication, ensured by the Smart Card.

The proposed system uses available technology and aims to be compatible with existent solutions.


Key Words: Smart Cards, Java Cards, Biometrics, Fingerprints, Match-On-Card, Remote Authentication 



Helder Manuel Marques de Pina

Desenvolvimento de micro-serviços de preservação digital para utilização em plataforma "Data Grid"


Presidente: Professor Rui Jorge Morais Tomaz Valadas

Orientador: Professor José Luís Brinquete Borbinha

Vogais: Engenheiro Gonçalo Antunes

Professor Paulo Jorge Pires Ferreira

Data: 09/11/2011 -10:30h / Sala 2.10 do IST-TagusPark.


Abstract: Digital preservation is the set of activities or processes responsible for ensuring that content in digital format remains accessible over time, while ensuring that the properties of authenticity and integrity of digital objects are preserved.

Several scientific communities like biology, medicine, engineering or physics, manage large amounts of data that need to be preserved for future research. To address this challenge, different strategies can be applied, ensuring that data is always accessible despite all the threats and vulnerabilities that endanger it.

In the context of digital preservation, data grid technology is used because it has several features that meet the proposed requirements. Besides being safe for the objects (supporting replication), is scalable with respect to storage and enables the creation of federations between independent grids in order to share resources.

This thesis proposes the use of data grid technology, particularly the platform iRODS, in scenarios with digital preservation requirements. To achieve this goal we must extend the platform in order to be able to take advantage of its replication and federation features. The result includes a set of new services to be integrated in the platform.


Key Words: Digital preservation, Data Grids, Micro-services, Federation, Replication