Secure Data Deduplication Scheme Using Linkage of Data Blocks in Cloud Storage Environment
Data de-duplication technology is a technology that helps save storage space by preventing the same data from being repeatedly stored in data storage. There are various methods of data de-duplication, but in general, the file source is divided into data blocks of a predetermined size, and the data de-duplication efficiency is improved by comparing each block. Therefore, each data block has a separate ownership, and each ownership is made smaller than the original of the data block. In this case, an attacker who intends to acquire a block of data can guess the data that can be input into each data block, and thus can make a dictionary attack to acquire data ownership. This happens because each data has a separate ownership, and each ownership does not affect the acquisition of other blocks. Therefore, this study proposes a method to solve this problem.
KeywordsCloud storage Data deduplication Convergent encryption
This work was supported by Barun ICT Research Center at Yonsei University and Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (NRF-2016R1D1A1B03935917)
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