PROVIDING SECURITY TO DATA STORED ON CLOUDS USING ROLE BASED APPROACH FOR DATA CENTRIC APPROACH

Computer Engineering

Most present security arrangements are based on perimeter security. However, Cloud computing breaks the organization borders. When data stored on the Cloud, So indirectly data reside outside the organizational boundaries. This may leads users to lost control over their data and raises security issues that slow down the use of Cloud computing. Data-centric access control approach with role-based expressiveness in which security is concern on protecting user data regardless the Cloud service provider who is responsible to hold data. Identity-based and proxy re-encryption techniques are used to Securing the authorization model. Data is encrypted and authorization rules are cryptographically protected to stored user data against the service provider access or misbehavior. The authorization model provides very high expressiveness with role hierarchies and resource hierarchical support. The solution takes advantage of the logic formalism provided by Semantic Web technologies, which make possible advanced rule management like semantic conflict detection. A proof of concept implementation has been developed and a working prototypical deployment of the proposal has been integrated within Google services.

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