Abstract: The movement to cloud computing is the disruptive change in information technology. Cloud computing begin to have an effect on the modern enterprise the basic service provided by the Cloud is Data Storage Cloud computing affords a cost-effective and efficient solution for sharing group resource among cloud users with the character of low and cost effective maintenance. But the major drawback of cloud computing is sharing data in a multi-owner manner, preserving data and identity privacy from untrusted cloud storage. In this present investigation a secure multi-owner data sharing structure called as Mona, for dynamic groups in the cloud is proposed. Any cloud handler can secretly share data with others through leveraging group signature and active broadcast encryption methods. Also, the overhead storage and encryption computation cost of this scheme are self-determining with the number of revoked users. The security of the proposed scheme was analyzed and demonstrated in this study.
Keywords: Cloud computing, Privacy, Dynamic group, Data sharing.