Achieving Protection of Data in Cloud Using Flexible Cipher Text Policy – Attribute Based Encryption

Abstract

Self-protection capacities of outsourced information turn out to be note worthily critical in distributed computing. Ciphertext-Policy Attribute Based Encryption (CP-ABE) can powerfully control the client gathering of the scrambled information by characterizing decoding attributes; henceforth has certain capacity of access control. In spite of the fact that there are distinctive plans of CP-ABE, to the extent we know, the greater part of these plans can just express straightforward arrangements with AND, OR and edge attribute tasks, which can't bolster conventional access control approaches. Keeping in mind the end goal to adequately incorporate access control with encryption to fabricate an independent information protection system, this paper proposed an Extended CP-ABE (ECP-ABE) conspire based on the current CP-ABE plot. The ECP-ABE plan can express any Attribute Based Access Control (ABAC) approaches spoke to by number juggling correlation and legitimate articulations that include NOT,<,≤,>,≥,[ ],( ),( ]NOT,<,≤,>,≥,[ ],( ),( ] and )[ ) administrators notwithstanding AND, OR and limit administrators. We demonstrate the Chosen-plaintext Attack (CPA) security of our plan under the Decisional Bilinear Diffie-Hellman (DBDH) supposition in the standard model, and furthermore talk about the test aftereffects of the proficiency of ECP-ABE.