Survey on Data Sharing and Re-Encryption in Cloud
Journal Title: International Journal of Advanced Research in Computer Engineering & Technology(IJARCET) - Year 2013, Vol 2, Issue 2
Abstract
Cloud storage helps enterprises and government agencies significantly reduce their financial overhead of data management, since they can now archive their data backups remotely to third-party cloud storage providers rather than maintain data centers of their own. Security concerns become relevant as we outsource the storage of possibly sensitive data to third party cloud storage. Data stored in cloud may be unexpectedly disclosed in the future due to malicious attacks on the cloud or careless management of cloud operators. Secure data transfer is needed to maintain the data security between authorized users. The challenge of achieving secure data sharing is that we have to encrypt the data and at the same time it should be available to those authorized clients. This is made possible through re-encryption. The re-encryption process converts the ciphertext encrypted under the public key to a different cipher text encrypted under the intended receiver’s public key. The re-encryption is secure only if it does not produce plain text in any of its intermediate stages. The re-encrypting authority should never get any information about the secret keys or the plain text during the process.
Authors and Affiliations
Renjith P , Sabitha S
Keywords
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