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Master's Dissertation
DOI
https://doi.org/10.11606/D.55.2004.tde-08112006-141232
Document
Author
Full name
Francisco Gomes Milagres
Institute/School/College
Knowledge Area
Date of Defense
Published
São Carlos, 2004
Supervisor
Committee
Moreira, Edson dos Santos (President)
Ishitani, Lucila
Pimentel, Maria da Graça Campos
Title in Portuguese
Uso de informações de contexto em segurança computacional
Keywords in Portuguese
Computação ubíqua
Contexto
Segurança
Abstract in Portuguese
Diariamente, novos sistemas ubíquos são desenvolvidos e integrados ao nosso cotidiano, cuja presença às vezes não é percebida pelos seus usuários. O objetivo deste trabalho é investigar as questões de segurança e privacidade existentes nos paradigmas de computação ubíqua e ciente de contexto. Utilizando um protótipo de TV interativa - TV-I (Goularte, 2003) - que possui características de mobilidade e ciência de contexto, este trabalho define um conjunto de requisitos mínimos para a garantia de segurança e privacidade em sistemas ubíquos. É também objetivo deste trabalho utilizar informações contextuais para gerenciamento dinâmico de requisitos de segurança e privacidade por meio de políticas expressas em linguagem EPAL. Para validar os resultados desta pesquisa, foi implementado o Gerente de Segurança como um serviço do protótipo TV-I. A principal característica desse gerente é controlar o acesso a informações pessoais por meio de informações de contexto fornecidas pelo Gerente de Contexto, de autoria de Santos (2004)
Title in English
Use of context information on computer security
Keywords in English
Context
Security
Ubiquitous computing
Abstract in English
Every day, new ubiquitous systems are being developed and integrated into our daily routines, whose presence is sometimes not even perceived by the casual user. The aim of this work is to investigate questions of security and privacy in ubiquitous and context aware computing. Using a prototype for interactive television - TV-I (Goularte, 2003) - that has characteristics of mobility and contextual-awareness, this work defines a set of basic requirements that are fundamental in order to guarantee security and privacy in ubiquitous systems. Furthermore, this work uses contextual information in order to dynamically manage security and privacy requirements according to security and privacy policies that are expressed in the EPAL language. In order to validate the experimental results, a Security Manager has been implemented as a service of the TV-I prototype. The principal characteristic of this manager is to enforce access control over the personal information using contextual information of the ubiquitous system, and which is supplied via the Context Manager, designed by Santos (2004).
 
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milagres_msc.pdf (1.59 Mbytes)
Publishing Date
2007-01-29
 
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