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TSTRATUS - Confiabilidade e Privacidade com Nuvens de Armazenamento de Dados
MSc Post-Graduation

In this thesis, the goal is to design, implement and evaluate a system that is responsi- ble for the management, access and search (in a reliable and secure way) of private data held by some subset of today’s available cloud storage providers. This system (which we call T-Stratus) will be able to guarantee several security properties over the stored data, such as authenticity, privacy, reliability, fault and intrusion tolerance and data availabil- ity, in a completely independent way, under full control from the users point of view and completely independent from the adopted cloud storage providers. This system acts like a thrust computer base in order to allow users to index, encrypt and distribute all data through multiple cloud storage providers, providing them with read, write and real time search over the encrypted data. This storage consists in a dis- tribution of the data by a fragmentation and replication process, with the encryption and replication of the fragments in multiple storage clouds. T-Stratus architecture, designed as a middleware system, can be used as an interme- diate/middleman between the user application and the public data storage clouds, in a cloud of clouds solution. This solution’s key idea is to take advantage of the data main- tenance and replication, provided by the available cloud-storage solutions, while main- taining the thrust base that allow users to keep control over it’s security properties and reliability. The system will be evaluated through benchmarking involving latency and throughput metrics in read and write operations, by comparing the efficiency of the pre- sented reliable and secure solution, with the unreliable and insecure use of the available cloud storage solutions. Keywords: Data-Storage Clouds; Security; Reliability; Dependability; Privacy; Data Management and Secure Data Searching.

Start Date: 2012-04-01

End Date: 2013-03-20

Post-Graduation Student / Researcher / Professor:
  • António Miguel Carneirinho Guiomar ( Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa )

Post-Graduation Supervisor(s):

Post-Graduation Jury:
  • Fernando Birra
  • Dulce Domingos ( Faculdade de Ciências da Universidade de Lisboa )
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