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SURVEY ON KEY AGGREGATE CRYPTOSYSTEM FOR SCALABLE DATA SHARING

Publication Date : 31/12/2014



Author(s) :

Nandhini.J , Ramasamy.S.


Volume/Issue :
Volume 1
,
Issue 6
(12 - 2014)



Abstract :

Public-key cryptosystems produce constant-size cipher texts with efficient delegation of decryption rights for any set of cipher texts. One can aggregate any set of secret keys and make them as compact as a single key. The secret key holder can release a constant-size aggregate key for flexible choices of cipher text set in cloud storage. In KAC, users encrypt a message not only under a public-key, but also under an identifier of cipher text called class. That means the cipher texts are further categorized into different classes. The key owner holds a master-secret called master-secret key, which can be used to extract secret keys for different classes. More importantly, the extracted key have can be an aggregate key which is as compact as a secret key for a single class, but aggregates the power of many such keys, i.e., the decryption power for any subset of cipher text classes. The key aggregate cryptosystem is enhanced with boundary less cipher text classes. The system is improved with device independent key distribution mechanism. The key distribution process is enhanced with security features to protect key leakage. The key parameter transmission process is integrated with the cipher text download process.


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SURVEY ON KEY AGGREGATE CRYPTOSYSTEM FOR SCALABLE DATA SHARING

December 10, 2014