• Miss.Sukhada Suryakant Jadhav
• Prof. Anup S. Kunte

Cloud system is used to provide large number of storage servers, which provide long-term storage service over the Internet. Cloud is having its feature scalability which provides the scalable cloud storage; varying data storage size that means an owner can increase the data size of the storage for the particular user. Constructing centralized storage system for the cloud system makes hackers stole the data easily for which general encryption schemes protects the data confidentiality. In our study a secure distributed storage system is formulated by integrating an efficient public-key encryption scheme. It supports flexible delegation in the sense that any subset of the cipher texts which is produced by the encryption scheme and is decryptable by a constant-size decryption key generated by the owner of the master-secret key.

Cloud computing, encrypted data sharing, Key aggregate cryptosystem, Scalable cloud storage.

"Encryption Schemes for Scalable Cloud Storage", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.2, Issue 10, page no.108-115, November-2015, Available :http://www.jetir.org/papers/JETIR1510021.pdf

"Encryption Schemes for Scalable Cloud Storage", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.2, Issue 10, page no. pp108-115, November-2015, Available at : http://www.jetir.org/papers/JETIR1510021.pdf