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Secure Data Deduplication on Cloud Storage
Abstract
Deduplication is the process of removing duplicate data by storing only one copy of the original data and replacing the others simply as a reference to the original. When data is stored on cloud storage, client-side deduplication helps in reducing storage and communications overheads both from the client as well as the server perspective. Secure deduplication is the practice by which the data stored on the cloud is secured from external influences such that the clients maintain the privacy of their data, and the server also gets to take advantage of deduplication. This is done by encrypting the data using different schemes into ciphertext, which makes sense only to the original client. The schemes created for secure deduplication on cloud storage provide a solution to the problem of duplication detection in encrypted ciphertext. This chapter provides a brief overview of secure deduplication used on cloud storage along with the issues encountered during its implementation. The chapter also includes a literature review and comparison of some deduplication techniques.
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