Provable data possession (PDP) and proofs of retrievability (POR) of current big user data: Cryptographic schemes in cloud storage

Background: A growing trend over the last few years is storage outsourcing. Where the concept of third-party data warehousing has become more popular. This trend prompts serval interesting security issues. One of the biggest issues with third-party data providers is accountability. This thesis, reviews two schemas/ algorithms that allows users to check the integrity and availability of their outsourced data on untrusted data stores. The reviewed schemas are Provable Data Possession (PDP) and Proofs of Retrievability (POR). Both are cryptographic protocols designed to give clients the assurance needed that their data is secure on the untrusted file storage. Furthermore, a conceptual framework is proposed to mitigate the weaknesses of the current storage solutions.