"Secure way to File Uploading and Downloading in multicloud"

In this paper, we address the problem of provable data possession in distributed
cloud environments from the following aspects: high security transparent Verification,
and high performance. To achieve these goals, we first propose a Verification
framework for multi-cloud storage along with two fundamentaltechniques: hash index hierarchy (HIH) and Homomorphic verifiable response
(HVR). We then demonstrate that the possibility of constructing a cooperative
PDP (CPDP) scheme without compromising data privacy based on modern
cryptographic techniques, such as interactive proof system (IPS).www.fu-vision .com
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