• KETHAVATH SAMBASIVA NAIK
• K.F BHARATI

Formally, Cipher text-policy attribute-based encryption (CP-ABE) technique has been implemented in multilevel hierarchy in well known areas like healthcare and military. The drawback is that representation of the relaxed records in multilevel hierarchy is not explored. To access the shared files in layered structure, encryption technique CP-ABE is implanted such that hierarchal files can be accessed in single access structure. However, single access structure improves the efficiency of time and storage cost of shared files. In generally, user doesn't provide their personal information in service based applications due to privacy issues. To access such applications flexibly and to reduce potential issues, CP-ABE scheme is adopted successfully.

Cloud computing, data sharing, file hierarchy, cipher text -policy, attribute-based encryption, ring signature.

"Attribute Based Encryption Scheme By Ring Signature In Cloud Computing", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 7, page no.160-163, July-2018, Available :http://www.jetir.org/papers/JETIR1807178.pdf

"Attribute Based Encryption Scheme By Ring Signature In Cloud Computing", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 7, page no. pp160-163, July-2018, Available at : http://www.jetir.org/papers/JETIR1807178.pdf