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Showing posts from November 21, 2011

my college academic main project- Access Control in Cloud

my college academic main project ACADEMIC PROJECT   PROJECT NAME: Access Control in Cloud TECHNOLOGIES USED: DOT NET , SQL PROJECT DESCRIPTION: Cloud computing is an emerging computing paradigm in which resources of the computing infrastructure are provided as services over the Internet. This paper proposed some services for data security and access control when users outsource sensitive data for sharing on cloud servers. This paper addresses this challenging open issue by, on one hand, defining and enforcing access policies based on data attributes, and, on the other hand, allowing the data owner to delegate most of the computation tasks involved in fine grained data access control to un-trusted cloud servers without disclosing the underlying data contents. Our proposed scheme enables the data owner to delegate tasks of data file re-encryption and user secret key update to cloud servers without disclosing data contents or user access privilege information. We achieve this goal b