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In 2010, Gentry and Halevi presented the first FHE implementation. FHE allows the evaluation of arbitrary functions directly on encrypted data on untrusted servers. However, even for the small setting with 2048 dimensions, the authors reported a performance of 1.8 s for a single bit encryption and 32 s for recryption on a high-end server. Much of the latency is due to computationally intensive multi-million-bit...
This paper introduces cloud computing concepts and main features, and analyzes the security of cloud computing and the security strategies are proposed for security issues related to cloud computing.
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