A THEORETICAL ANALYSIS OF SECURE DATA FORWARDING IN DISTRIBUTED CLOUD STORAGE USING RE-ENCRYPTION SCHEME

Author (s) : Mrs.S.ANURADHA and Dr.P.PERIYASAMY

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Abstract :
Cloud storage system is third party system which provides long term storage service over the internet. Storing and movement of data in cloud system make a serious problem about data confidentiality. Encryption scheme protect data confidentiality and also faces some limitations during functioning of the storage system as well as data forwarding. The threshold proxy re-encryption scheme provides the best solution for data confidentiality as well as forwarding the data. The proxy re-encryption consist integration of message encryption, message encoding and forwarding the message. The encryption of message uses cryptographic encryption algorithms. The encoding of the encrypted message uses erasure encoding. Erasure encoding supports the forwarding scheme and applicable in decentralized distributed system. A decentralized erasure code is used to ensure the data robustness in the distributed cloud storage system. In erasure codes, the copy of the message is stored in the each storage servers. If one of the storage servers is failed, the message can be retrieved by one of the surviving server. Thus, the decentralized erasure code is highly recommended for distributed storage systems. The proxy re-encryption scheme significantly reduces the communication and computation cost. It also reduces the storage size of the storage servers because the only encoded codeword symbols are stored in the storage servers.

Keywords : Proxy Re-Encryption, Decentralized erasure code, Threshold, encryption, Distributed cloud storage, storage servers, Data forwarding, servers, Cloud computing.

Conference Date : 17/09/2021

Pages : 43

Paper ID : IESMDT41