Providing trust to multi-cloud storage platforms through the blockchain EVALUATED

The Crypto Cloud system was created with the assumption that the server does not act maliciously. In this dissertation, we propose a solution that, through the use of the blockchain, is able to provide integrity of metadata without relying on the server. This is achieved by extending Crypto Cloud with secure metadata management using the blockchain. We focused on the management of the users' identities and how to provide metadata integrity without relying on the central server. We built a prototype and tested it with real use cases such as the addition of a user, creation/reading of files. While more complex, the new client removes the trust from the central server and is, therefore, a step towards more decentralized and secure cloud storage systems.
Cloud Storage Services, Security, Integrity, Blockchain

Fevereiro 26, 2019, 18:40

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Miguel Ângelo Marques de Matos

Departamento de Engenharia Informática (DEI)

Professor Auxiliar


Ricardo Jorge Fernandes Chaves

Departamento de Engenharia Informática (DEI)

Professor Associado