In several distributed systems a user should only be able to access data if a user posses a certain set of credentials or attributes. Data access control is the well-organized method to provide data security in cloud. Cipher text-Policy Attribute-based Encryption (CP-ABE) is mostly considered for data access control in cloud storage. The existing CP-ABE is difficult to apply in multi-authority cloud storage due to the attribute revocation problem. The proposed revocable multi-authority CP-ABE scheme provides solution to the attribute revocation problem. The proposed scheme updates the components of the revoked attribute only and generates latest secret keys for the revoked attribute and forwards it to the non-revoked users who have the attributes as revoked attributes. The backward security and Forward security is assured. If the revoked user enters into the system again by doing the registration process means, the particular user is identified via the identity card detail in the revocation list and will not be added to the system, so that they are stopped at the registration phase itself.
Keywords
Access control
multi-authority
CP-ABE
attributes
revocation
cloud storage I. INTRODUCTION In many situations
when a user encrypts sensitive data
it is imperative that she establish a specific access control policy on who can decrypt this data. Clou
Authors
Dr.R.Vasanthi
How to Cite this Article
Dr.R.Vasanthi (2016).
"REVOCABLE DATA ACCESS CONTROL IN MULTI-AUTHORITY CLOUD".
International Journal of Contemporary Research in Computer Science and Technology,
2(1), pp. 385-387.
